---

import type { Anchor, Bounds, ContainerSize, Point, SeriesApi } from './types';

import type { Coordinate, IChartApi, Time } from 'lightweight-charts';

export function getPriceFromYCoordinate(series: SeriesApi, yCoordinate: number): number | null {
  return series.coordinateToPrice(yCoordinate as Coordinate);
}

export function getYCoordinateFromPrice(series: SeriesApi, price: number): Coordinate | null {
  return series.priceToCoordinate(price);
}

export function getTimeFromXCoordinate(chart: IChartApi, xCoordinate: number): Time | null {
  return chart.timeScale().coordinateToTime(xCoordinate as Coordinate) ?? null;
}

export function getXCoordinateFromTime(chart: IChartApi, time: Time): Coordinate | null {
  return chart.timeScale().timeToCoordinate(time);
}

export function clamp(value: number, min: number, max: number): number {
  return Math.max(min, Math.min(value, max));
}

export function getContainerSize(container: HTMLElement): ContainerSize {
  const rect = container.getBoundingClientRect();

  return {
    width: rect.width,
    height: rect.height,
  };
}

export function clampPointToContainer(point: Point, container: HTMLElement): Point {
  const { width, height } = getContainerSize(container);

  return {
    x: clamp(point.x, 0, width),
    y: clamp(point.y, 0, height),
  };
}

export function getPointerPoint(container: HTMLElement, event: PointerEvent): Point {
  const rect = container.getBoundingClientRect();

  return clampPointToContainer(
    {
      x: event.clientX - rect.left,
      y: event.clientY - rect.top,
    },
    container,
  );
}

export function isNearPoint(point: Point, x: number, y: number, tolerance: number): boolean {
  return Math.abs(point.x - x) <= tolerance && Math.abs(point.y - y) <= tolerance;
}

export function isPointInBounds(point: Point, bounds: Bounds, tolerance = 0): boolean {
  return (
    point.x >= bounds.left - tolerance &&
    point.x <= bounds.right + tolerance &&
    point.y >= bounds.top - tolerance &&
    point.y <= bounds.bottom + tolerance
  );
}

export function normalizeBounds(
  left: number,
  right: number,
  top: number,
  bottom: number,
  container: HTMLElement,
): Bounds {
  const { width, height } = getContainerSize(container);

  return {
    left: clamp(Math.min(left, right), 0, width),
    right: clamp(Math.max(left, right), 0, width),
    top: clamp(Math.min(top, bottom), 0, height),
    bottom: clamp(Math.max(top, bottom), 0, height),
  };
}

export function shiftTimeByPixels(chart: IChartApi, time: Time, offsetX: number): Time | null {
  const coordinate = getXCoordinateFromTime(chart, time);

  if (coordinate === null) {
    return null;
  }

  return getTimeFromXCoordinate(chart, Number(coordinate) + offsetX);
}

export function getPriceDelta(series: SeriesApi, fromY: number, toY: number): number {
  const fromPrice = getPriceFromYCoordinate(series, fromY);
  const toPrice = getPriceFromYCoordinate(series, toY);

  if (fromPrice === null || toPrice === null) {
    return 0;
  }

  return toPrice - fromPrice;
}

export function getPriceRangeInContainer(
  series: SeriesApi,
  container: HTMLElement,
): { min: number; max: number } | null {
  const { height } = getContainerSize(container);

  if (!height) {
    return null;
  }

  const topPrice = getPriceFromYCoordinate(series, 0);
  const bottomPrice = getPriceFromYCoordinate(series, height);

  if (topPrice === null || bottomPrice === null) {
    return null;
  }

  return {
    min: Math.min(topPrice, bottomPrice),
    max: Math.max(topPrice, bottomPrice),
  };
}

export function getAnchorFromPoint(chart: IChartApi, series: SeriesApi, point: Point): Anchor | null {
  const time = getTimeFromXCoordinate(chart, point.x);
  const price = getPriceFromYCoordinate(series, point.y);

  if (time === null || price === null) {
    return null;
  }

  return {
    time,
    price,
  };
}


import { Observable, Subscription } from 'rxjs';

import {
  CustomPriceAxisPaneView,
  CustomPriceAxisView,
  CustomTimeAxisPaneView,
  CustomTimeAxisView,
} from '@core/Drawings/axis';
import {
  clamp,
  clampPointToContainer as clampPointToContainerInElement,
  getAnchorFromPoint,
  getContainerSize as getElementContainerSize,
  getPointerPoint as getPointerPointFromEvent,
  getPriceDelta as getPriceDeltaFromCoordinates,
  getPriceFromYCoordinate,
  getTimeFromXCoordinate,
  getXCoordinateFromTime,
  getYCoordinateFromPrice,
  isNearPoint,
  isPointInBounds,
  normalizeBounds,
  shiftTimeByPixels,
} from '@core/Drawings/helpers';
import { updateViews } from '@core/Drawings/utils';

import { getThemeStore } from '@src/theme';
import { Defaults } from '@src/types/defaults';
import { formatPrice } from '@src/utils';
import { formatDate } from '@src/utils/formatter';

import { RectanglePaneView } from './paneView';
import {
  createDefaultSettings,
  getRectangleSettingsTabs,
  RectangleSettings,
  RectangleStyle,
  RectangleTextStyle,
} from './settings';

import type { ISeriesDrawing } from '@core/Drawings/common';
import type { AxisLabel, AxisSegment, Point, SeriesApi } from '@core/Drawings/types';
import type { ChartOptionsModel, SettingsTab, SettingsValues } from '@src/types';
import type {
  AutoscaleInfo,
  IChartApi,
  IPrimitivePaneView,
  Logical,
  PrimitiveHoveredItem,
  SeriesAttachedParameter,
  SeriesOptionsMap,
  Time,
  UTCTimestamp,
} from 'lightweight-charts';

type RectangleMode = 'idle' | 'drawing' | 'ready' | 'dragging';
type RectangleHandle = 'body' | 'nw' | 'n' | 'ne' | 'e' | 'se' | 's' | 'sw' | 'w' | null;
type RectangleHandleKey = Exclude<RectangleHandle, 'body' | null>;
type TimeLabelKind = 'left' | 'right';
type PriceLabelKind = 'top' | 'bottom';

interface RectangleParams {
  container: HTMLElement;
  formatObservable?: Observable<ChartOptionsModel>;
  removeSelf?: () => void;
  openSettings?: () => void;
}

interface RectangleState {
  hidden: boolean;
  isActive: boolean;
  mode: RectangleMode;
  startTime: Time | null;
  endTime: Time | null;
  startPrice: number | null;
  endPrice: number | null;
  settings: RectangleSettings;
}

interface RectangleGeometry {
  left: number;
  right: number;
  top: number;
  bottom: number;
  width: number;
  height: number;
  handles: Record<RectangleHandleKey, Point>;
}

export interface RectangleRenderData extends RectangleGeometry, RectangleStyle, RectangleTextStyle {
  showFill: boolean;
  showHandles: boolean;
}

const HANDLE_HIT_TOLERANCE = 8;
const BODY_HIT_TOLERANCE = 6;
const MIN_RECTANGLE_SIZE = 6;

export class Rectangle implements ISeriesDrawing {
  private chart: IChartApi;
  private series: SeriesApi;
  private container: HTMLElement;
  private removeSelf?: () => void;
  private openSettings?: () => void;

  private settings: RectangleSettings = createDefaultSettings();

  private requestUpdate: (() => void) | null = null;
  private isBound = false;
  private subscriptions = new Subscription();

  private hidden = false;
  private isActive = false;
  private mode: RectangleMode = 'idle';

  private startTime: Time | null = null;
  private endTime: Time | null = null;
  private startPrice: number | null = null;
  private endPrice: number | null = null;

  private activeDragTarget: RectangleHandle = null;
  private dragPointerId: number | null = null;
  private dragStartPoint: Point | null = null;
  private dragStateSnapshot: RectangleState | null = null;
  private dragGeometrySnapshot: RectangleGeometry | null = null;

  private displayFormat: ChartOptionsModel = {
    dateFormat: Defaults.dateFormat,
    timeFormat: Defaults.timeFormat,
    showTime: Defaults.showTime,
  };

  private readonly paneView: RectanglePaneView;
  private readonly timeAxisPaneView: CustomTimeAxisPaneView;
  private readonly priceAxisPaneView: CustomPriceAxisPaneView;
  private readonly leftTimeAxisView: CustomTimeAxisView;
  private readonly rightTimeAxisView: CustomTimeAxisView;
  private readonly topPriceAxisView: CustomPriceAxisView;
  private readonly bottomPriceAxisView: CustomPriceAxisView;

  constructor(
    chart: IChartApi,
    series: SeriesApi,
    { container, formatObservable, removeSelf, openSettings }: RectangleParams,
  ) {
    this.chart = chart;
    this.series = series;
    this.container = container;
    this.removeSelf = removeSelf;
    this.openSettings = openSettings;

    this.paneView = new RectanglePaneView(this);

    this.timeAxisPaneView = new CustomTimeAxisPaneView({
      getAxisSegments: () => this.getTimeAxisSegments(),
    });

    this.priceAxisPaneView = new CustomPriceAxisPaneView({
      getAxisSegments: () => this.getPriceAxisSegments(),
    });

    this.leftTimeAxisView = new CustomTimeAxisView({
      getAxisLabel: (kind) => this.getTimeAxisLabel(kind),
      labelKind: 'left',
    });

    this.rightTimeAxisView = new CustomTimeAxisView({
      getAxisLabel: (kind) => this.getTimeAxisLabel(kind),
      labelKind: 'right',
    });

    this.topPriceAxisView = new CustomPriceAxisView({
      getAxisLabel: (kind) => this.getPriceAxisLabel(kind),
      labelKind: 'top',
    });

    this.bottomPriceAxisView = new CustomPriceAxisView({
      getAxisLabel: (kind) => this.getPriceAxisLabel(kind),
      labelKind: 'bottom',
    });

    if (formatObservable) {
      this.subscriptions.add(
        formatObservable.subscribe((format) => {
          this.displayFormat = format;
          this.render();
        }),
      );
    }

    this.series.attachPrimitive(this);
  }

  public show(): void {
    this.hidden = false;
    this.render();
  }

  public hide(): void {
    this.hidden = true;
    this.render();
  }

  public destroy(): void {
    this.unbindEvents();
    this.subscriptions.unsubscribe();
    this.series.detachPrimitive(this);
    this.requestUpdate = null;
  }

  public rebind(series: SeriesApi): void {
    if (this.series === series) {
      return;
    }

    this.unbindEvents();
    this.series.detachPrimitive(this);

    this.series = series;
    this.requestUpdate = null;

    this.series.attachPrimitive(this);
    this.render();
  }

  public isCreationPending(): boolean {
    return this.mode === 'idle' || this.mode === 'drawing';
  }

  public shouldShowInObjectTree(): boolean {
    return this.mode !== 'idle';
  }

  public getState(): RectangleState {
    return {
      hidden: this.hidden,
      isActive: this.isActive,
      mode: this.mode,
      startTime: this.startTime,
      endTime: this.endTime,
      startPrice: this.startPrice,
      endPrice: this.endPrice,
      settings: { ...this.settings },
    };
  }

  public setState(state: unknown): void {
    const nextState = state as Partial<RectangleState>;

    if ('hidden' in nextState && typeof nextState.hidden === 'boolean') {
      this.hidden = nextState.hidden;
    }

    if ('isActive' in nextState && typeof nextState.isActive === 'boolean') {
      this.isActive = nextState.isActive;
    }

    if ('mode' in nextState && nextState.mode) {
      this.mode = nextState.mode;
    }

    if ('startTime' in nextState) {
      this.startTime = nextState.startTime ?? null;
    }

    if ('endTime' in nextState) {
      this.endTime = nextState.endTime ?? null;
    }

    if ('startPrice' in nextState) {
      this.startPrice = nextState.startPrice ?? null;
    }

    if ('endPrice' in nextState) {
      this.endPrice = nextState.endPrice ?? null;
    }

    if ('settings' in nextState && nextState.settings) {
      this.settings = {
        ...createDefaultSettings(),
        ...nextState.settings,
      };
    }

    this.render();
  }

  public getSettings(): SettingsValues {
    return { ...this.settings };
  }

  public getSettingsTabs(): SettingsTab[] {
    return getRectangleSettingsTabs(this.settings);
  }

  public updateSettings(settings: SettingsValues): void {
    this.settings = {
      ...this.settings,
      ...settings,
    };

    this.render();
  }

  public attached(param: SeriesAttachedParameter<Time, keyof SeriesOptionsMap>): void {
    this.requestUpdate = param.requestUpdate;
    this.bindEvents();
  }

  public detached(): void {
    this.unbindEvents();
    this.requestUpdate = null;
  }

  public updateAllViews(): void {
    updateViews([
      this.paneView,
      this.timeAxisPaneView,
      this.priceAxisPaneView,
      this.leftTimeAxisView,
      this.rightTimeAxisView,
      this.topPriceAxisView,
      this.bottomPriceAxisView,
    ]);
  }

  public paneViews(): readonly IPrimitivePaneView[] {
    return [this.paneView];
  }

  public timeAxisPaneViews(): readonly IPrimitivePaneView[] {
    return [this.timeAxisPaneView];
  }

  public priceAxisPaneViews(): readonly IPrimitivePaneView[] {
    return [this.priceAxisPaneView];
  }

  public timeAxisViews() {
    return [this.leftTimeAxisView, this.rightTimeAxisView];
  }

  public priceAxisViews() {
    return [this.topPriceAxisView, this.bottomPriceAxisView];
  }

  public autoscaleInfo(_start: Logical, _end: Logical): AutoscaleInfo | null {
    return null;
  }

  public getRenderData(): RectangleRenderData | null {
    if (this.hidden) {
      return null;
    }

    const geometry = this.getGeometry();

    if (!geometry) {
      return null;
    }

    return {
      ...geometry,
      showFill: true,
      showHandles: this.isActive,
      ...this.settings,
    };
  }

  public getTimeAxisSegments(): AxisSegment[] {
    if (!this.isActive) {
      return [];
    }

    const bounds = this.getTimeBounds();

    if (!bounds) {
      return [];
    }

    const { colors } = getThemeStore();

    return [
      {
        from: bounds.left,
        to: bounds.right,
        color: colors.axisMarkerAreaFill,
      },
    ];
  }

  public getPriceAxisSegments(): AxisSegment[] {
    if (!this.isActive) {
      return [];
    }

    const bounds = this.getPriceBounds();

    if (!bounds) {
      return [];
    }

    const { colors } = getThemeStore();

    return [
      {
        from: bounds.top,
        to: bounds.bottom,
        color: colors.axisMarkerAreaFill,
      },
    ];
  }

  public getTimeAxisLabel(kind: string): AxisLabel | null {
    if (!this.isActive || (kind !== 'left' && kind !== 'right')) {
      return null;
    }

    const labelKind = kind as TimeLabelKind;
    const coordinate = this.getTimeCoordinate(labelKind);
    const text = this.getTimeText(labelKind);

    if (coordinate === null || !text) {
      return null;
    }

    const { colors } = getThemeStore();

    return {
      coordinate,
      text,
      textColor: colors.chartPriceLineText,
      backgroundColor: colors.axisMarkerLabelFill,
    };
  }

  public getPriceAxisLabel(kind: string): AxisLabel | null {
    if (!this.isActive || (kind !== 'top' && kind !== 'bottom')) {
      return null;
    }

    const labelKind = kind as PriceLabelKind;
    const coordinate = this.getPriceCoordinate(labelKind);
    const text = this.getPriceText(labelKind);

    if (coordinate === null || !text) {
      return null;
    }

    const { colors } = getThemeStore();

    return {
      coordinate,
      text,
      textColor: colors.chartPriceLineText,
      backgroundColor: colors.axisMarkerLabelFill,
    };
  }

  public hitTest(x: number, y: number): PrimitiveHoveredItem | null {
    if (this.hidden || this.mode === 'idle' || this.mode === 'drawing') {
      return null;
    }

    const point = { x, y };

    if (!this.isActive) {
      if (!this.containsPoint(point)) {
        return null;
      }

      return {
        cursorStyle: 'pointer',
        externalId: 'rectangle-position',
        zOrder: 'top',
      };
    }

    const handleTarget = this.getHandleTarget(point);

    if (handleTarget) {
      return {
        cursorStyle: this.getCursorStyle(handleTarget),
        externalId: 'rectangle-position',
        zOrder: 'top',
      };
    }

    if (!this.containsPoint(point)) {
      return null;
    }

    return {
      cursorStyle: 'grab',
      externalId: 'rectangle-position',
      zOrder: 'top',
    };
  }

  private bindEvents(): void {
    if (this.isBound) {
      return;
    }

    this.isBound = true;

    this.container.addEventListener('dblclick', this.handleDoubleClick);
    this.container.addEventListener('pointerdown', this.handlePointerDown);
    window.addEventListener('pointermove', this.handlePointerMove);
    window.addEventListener('pointerup', this.handlePointerUp);
    window.addEventListener('pointercancel', this.handlePointerUp);
  }

  private unbindEvents(): void {
    if (!this.isBound) {
      return;
    }

    this.isBound = false;

    this.container.removeEventListener('dblclick', this.handleDoubleClick);
    this.container.removeEventListener('pointerdown', this.handlePointerDown);
    window.removeEventListener('pointermove', this.handlePointerMove);
    window.removeEventListener('pointerup', this.handlePointerUp);
    window.removeEventListener('pointercancel', this.handlePointerUp);
  }

  private handleDoubleClick = (event: MouseEvent): void => {
    if (this.hidden || this.mode !== 'ready') {
      return;
    }

    const rect = this.container.getBoundingClientRect();
    const point = {
      x: event.clientX - rect.left,
      y: event.clientY - rect.top,
    };

    if (!this.containsPoint(point) && !this.getHandleTarget(point)) {
      return;
    }

    event.preventDefault();
    event.stopPropagation();

    this.openSettings?.();
  };

  private handlePointerDown = (event: PointerEvent): void => {
    if (this.hidden || event.button !== 0) {
      return;
    }

    const point = this.getEventPoint(event);

    if (this.mode === 'idle') {
      event.preventDefault();
      event.stopPropagation();

      this.startDrawing(point);
      return;
    }

    if (this.mode === 'drawing') {
      event.preventDefault();
      event.stopPropagation();

      this.updateDrawing(point);
      this.finishDrawing();
      return;
    }

    if (this.mode !== 'ready') {
      return;
    }

    if (!this.isActive) {
      if (!this.containsPoint(point)) {
        return;
      }

      event.preventDefault();
      event.stopPropagation();

      this.isActive = true;
      this.render();
      return;
    }

    const dragTarget = this.getDragTarget(point);

    if (!dragTarget) {
      this.isActive = false;
      this.render();
      return;
    }

    event.preventDefault();
    event.stopPropagation();

    this.startDragging(point, event.pointerId, dragTarget);
  };

  private handlePointerMove = (event: PointerEvent): void => {
    const point = this.getEventPoint(event);

    if (this.mode === 'drawing') {
      this.updateDrawing(point);
      return;
    }

    if (this.mode !== 'dragging' || this.dragPointerId !== event.pointerId) {
      return;
    }

    event.preventDefault();

    if (this.activeDragTarget === 'body') {
      this.moveWhole(point);
      this.render();
      return;
    }

    this.resizeRectangle(point);
    this.render();
  };

  private handlePointerUp = (event: PointerEvent): void => {
    if (this.mode !== 'dragging' || this.dragPointerId !== event.pointerId) {
      return;
    }

    this.finishDragging();
  };

  private startDrawing(point: Point): void {
    const anchor = this.createAnchor(point);

    if (!anchor) {
      return;
    }

    this.startTime = anchor.time;
    this.endTime = anchor.time;
    this.startPrice = anchor.price;
    this.endPrice = anchor.price;

    this.isActive = true;
    this.mode = 'drawing';

    this.render();
  }

  private updateDrawing(point: Point): void {
    const clampedPoint = this.clampPointToContainer(point);
    const anchor = this.createAnchor(clampedPoint);

    if (!anchor) {
      return;
    }

    this.endTime = anchor.time;
    this.endPrice = anchor.price;

    this.render();
  }

  private finishDrawing(): void {
    const geometry = this.getGeometry();

    if (!geometry || geometry.width < MIN_RECTANGLE_SIZE || geometry.height < MIN_RECTANGLE_SIZE) {
      if (this.removeSelf) {
        this.removeSelf();
        return;
      }

      this.resetToIdle();
      return;
    }

    this.mode = 'ready';

    this.render();
  }

  private startDragging(point: Point, pointerId: number, dragTarget: Exclude<RectangleHandle, null>): void {
    this.mode = 'dragging';

    this.activeDragTarget = dragTarget;
    this.dragPointerId = pointerId;
    this.dragStartPoint = point;
    this.dragStateSnapshot = this.getState();
    this.dragGeometrySnapshot = this.getGeometry();

    this.render();
  }

  private finishDragging(): void {
    this.mode = 'ready';

    this.clearInteractionState();
    this.render();
  }

  private clearInteractionState(): void {
    this.activeDragTarget = null;
    this.dragPointerId = null;
    this.dragStartPoint = null;
    this.dragStateSnapshot = null;
    this.dragGeometrySnapshot = null;
  }

  private resetToIdle(): void {
    this.hidden = false;
    this.isActive = false;
    this.mode = 'idle';

    this.startTime = null;
    this.endTime = null;
    this.startPrice = null;
    this.endPrice = null;
    this.clearInteractionState();
    this.render();
  }

  private getDragTarget(point: Point): Exclude<RectangleHandle, null> | null {
    const handleTarget = this.getHandleTarget(point);

    if (handleTarget) {
      return handleTarget;
    }

    if (this.containsPoint(point)) {
      return 'body';
    }

    return null;
  }

  private moveWhole(point: Point): void {
    const snapshot = this.dragStateSnapshot;
    const geometry = this.dragGeometrySnapshot;

    if (!snapshot || !geometry || !this.dragStartPoint) {
      return;
    }

    if (
      snapshot.startTime === null ||
      snapshot.endTime === null ||
      snapshot.startPrice === null ||
      snapshot.endPrice === null
    ) {
      return;
    }

    const containerSize = this.getContainerSize();

    const rawOffsetX = point.x - this.dragStartPoint.x;
    const rawOffsetY = point.y - this.dragStartPoint.y;

    const minOffsetX = -geometry.left;
    const maxOffsetX = containerSize.width - geometry.right;
    const clampedOffsetX = clamp(rawOffsetX, minOffsetX, maxOffsetX);

    const minOffsetY = -geometry.top;
    const maxOffsetY = containerSize.height - geometry.bottom;
    const clampedOffsetY = clamp(rawOffsetY, minOffsetY, maxOffsetY);

    const nextStartTime = this.shiftTime(snapshot.startTime, clampedOffsetX);
    const nextEndTime = this.shiftTime(snapshot.endTime, clampedOffsetX);

    if (nextStartTime === null || nextEndTime === null) {
      return;
    }

    const priceOffset = this.getPriceDelta(this.dragStartPoint.y, this.dragStartPoint.y + clampedOffsetY);

    this.startTime = nextStartTime;
    this.endTime = nextEndTime;
    this.startPrice = snapshot.startPrice + priceOffset;
    this.endPrice = snapshot.endPrice + priceOffset;
  }

  private resizeRectangle(point: Point): void {
    const geometry = this.dragGeometrySnapshot;

    if (!geometry || !this.activeDragTarget || this.activeDragTarget === 'body') {
      return;
    }

    const clampedPoint = this.clampPointToContainer(point);

    let { left } = geometry;
    let { right } = geometry;
    let { top } = geometry;
    let { bottom } = geometry;

    switch (this.activeDragTarget) {
      case 'nw':
        left = clampedPoint.x;
        top = clampedPoint.y;
        break;
      case 'n':
        top = clampedPoint.y;
        break;
      case 'ne':
        right = clampedPoint.x;
        top = clampedPoint.y;
        break;
      case 'e':
        right = clampedPoint.x;
        break;
      case 'se':
        right = clampedPoint.x;
        bottom = clampedPoint.y;
        break;
      case 's':
        bottom = clampedPoint.y;
        break;
      case 'sw':
        left = clampedPoint.x;
        bottom = clampedPoint.y;
        break;
      case 'w':
        left = clampedPoint.x;
        break;
      default:
        return;
    }

    this.setRectangleBounds(left, right, top, bottom);
  }

  private setRectangleBounds(left: number, right: number, top: number, bottom: number): boolean {
    const bounds = normalizeBounds(left, right, top, bottom, this.container);

    const startTime = getTimeFromXCoordinate(this.chart, bounds.left);
    const endTime = getTimeFromXCoordinate(this.chart, bounds.right);
    const startPrice = getPriceFromYCoordinate(this.series, bounds.top);
    const endPrice = getPriceFromYCoordinate(this.series, bounds.bottom);

    if (startTime === null || endTime === null || startPrice === null || endPrice === null) {
      return false;
    }

    this.startTime = startTime;
    this.endTime = endTime;
    this.startPrice = startPrice;
    this.endPrice = endPrice;

    return true;
  }

  private createAnchor(point: Point): { time: Time; price: number } | null {
    return getAnchorFromPoint(this.chart, this.series, point);
  }

  private getGeometry(): RectangleGeometry | null {
    if (this.startTime === null || this.endTime === null || this.startPrice === null || this.endPrice === null) {
      return null;
    }

    const startX = getXCoordinateFromTime(this.chart, this.startTime);
    const endX = getXCoordinateFromTime(this.chart, this.endTime);
    const startY = getYCoordinateFromPrice(this.series, this.startPrice);
    const endY = getYCoordinateFromPrice(this.series, this.endPrice);

    if (startX === null || endX === null || startY === null || endY === null) {
      return null;
    }

    const left = Math.round(Math.min(Number(startX), Number(endX)));
    const right = Math.round(Math.max(Number(startX), Number(endX)));
    const top = Math.round(Math.min(Number(startY), Number(endY)));
    const bottom = Math.round(Math.max(Number(startY), Number(endY)));

    const centerX = (left + right) / 2;
    const centerY = (top + bottom) / 2;

    return {
      left,
      right,
      top,
      bottom,
      width: right - left,
      height: bottom - top,
      handles: {
        nw: { x: left, y: top },
        n: { x: centerX, y: top },
        ne: { x: right, y: top },
        e: { x: right, y: centerY },
        se: { x: right, y: bottom },
        s: { x: centerX, y: bottom },
        sw: { x: left, y: bottom },
        w: { x: left, y: centerY },
      },
    };
  }

  private getTimeBounds(): { left: number; right: number } | null {
    const geometry = this.getGeometry();

    if (!geometry) {
      return null;
    }

    return {
      left: geometry.left,
      right: geometry.right,
    };
  }

  private getPriceBounds(): { top: number; bottom: number } | null {
    const geometry = this.getGeometry();

    if (!geometry) {
      return null;
    }

    return {
      top: geometry.top,
      bottom: geometry.bottom,
    };
  }

  private getTimeCoordinate(kind: TimeLabelKind): number | null {
    const geometry = this.getGeometry();

    if (!geometry) {
      return null;
    }

    return kind === 'left' ? geometry.left : geometry.right;
  }

  private getPriceCoordinate(kind: PriceLabelKind): number | null {
    const geometry = this.getGeometry();

    if (!geometry) {
      return null;
    }

    return kind === 'top' ? geometry.top : geometry.bottom;
  }

  private getTimeText(kind: TimeLabelKind): string {
    const time = this.getTimeValueForLabel(kind);

    if (typeof time !== 'number') {
      return '';
    }

    return formatDate(
      time as UTCTimestamp,
      this.displayFormat.dateFormat,
      this.displayFormat.timeFormat,
      this.displayFormat.showTime,
    );
  }

  private getPriceText(kind: PriceLabelKind): string {
    const price = this.getPriceValueForLabel(kind);

    if (price === null) {
      return '';
    }

    return formatPrice(price) ?? '';
  }

  private getTimeValueForLabel(kind: TimeLabelKind): Time | null {
    if (this.startTime === null || this.endTime === null) {
      return null;
    }

    const startX = getXCoordinateFromTime(this.chart, this.startTime);
    const endX = getXCoordinateFromTime(this.chart, this.endTime);

    if (startX === null || endX === null) {
      return kind === 'left' ? this.startTime : this.endTime;
    }

    const startIsLeft = Number(startX) <= Number(endX);

    if (kind === 'left') {
      return startIsLeft ? this.startTime : this.endTime;
    }

    return startIsLeft ? this.endTime : this.startTime;
  }

  private getPriceValueForLabel(kind: PriceLabelKind): number | null {
    if (this.startPrice === null || this.endPrice === null) {
      return null;
    }

    const startY = getYCoordinateFromPrice(this.series, this.startPrice);
    const endY = getYCoordinateFromPrice(this.series, this.endPrice);

    if (startY === null || endY === null) {
      return kind === 'top' ? Math.max(this.startPrice, this.endPrice) : Math.min(this.startPrice, this.endPrice);
    }

    const startIsTop = Number(startY) <= Number(endY);

    if (kind === 'top') {
      return startIsTop ? this.startPrice : this.endPrice;
    }

    return startIsTop ? this.endPrice : this.startPrice;
  }

  private getHandleTarget(point: Point): RectangleHandleKey | null {
    const geometry = this.getGeometry();

    if (!geometry) {
      return null;
    }

    const handleOrder: RectangleHandleKey[] = ['nw', 'n', 'ne', 'e', 'se', 's', 'sw', 'w'];

    for (const handleName of handleOrder) {
      const handle = geometry.handles[handleName];

      if (isNearPoint(point, handle.x, handle.y, HANDLE_HIT_TOLERANCE)) {
        return handleName;
      }
    }

    return null;
  }

  private containsPoint(point: Point): boolean {
    const geometry = this.getGeometry();

    if (!geometry) {
      return false;
    }

    return isPointInBounds(point, geometry, BODY_HIT_TOLERANCE);
  }

  private getCursorStyle(handle: Exclude<RectangleHandle, null>): PrimitiveHoveredItem['cursorStyle'] {
    switch (handle) {
      case 'nw':
      case 'se':
        return 'nwse-resize';
      case 'ne':
      case 'sw':
        return 'nesw-resize';
      case 'n':
      case 's':
        return 'ns-resize';
      case 'e':
      case 'w':
        return 'ew-resize';
      case 'body':
        return 'grab';
      default:
        return 'default';
    }
  }

  private shiftTime(time: Time, offsetX: number): Time | null {
    return shiftTimeByPixels(this.chart, time, offsetX);
  }

  private getPriceDelta(fromY: number, toY: number): number {
    return getPriceDeltaFromCoordinates(this.series, fromY, toY);
  }

  private getContainerSize(): { width: number; height: number } {
    return getElementContainerSize(this.container);
  }

  private clampPointToContainer(point: Point): Point {
    return clampPointToContainerInElement(point, this.container);
  }

  private getEventPoint(event: PointerEvent): Point {
    return getPointerPointFromEvent(this.container, event);
  }

  private render(): void {
    this.updateAllViews();
    this.requestUpdate?.();
  }
}

import { CanvasRenderingTarget2D } from 'fancy-canvas';
import { IPrimitivePaneRenderer } from 'lightweight-charts';

import { getThemeStore } from '@src/theme';

import { Rectangle } from './rectangle';

const UI = {
  borderWidth: 1,
  handleSize: 10,
  handleBorderWidth: 1,
  textOffset: 4,
  textLineHeightMultiplier: 1.2,
};

export class RectanglePaneRenderer implements IPrimitivePaneRenderer {
  private readonly rectangle: Rectangle;

  constructor(rectangle: Rectangle) {
    this.rectangle = rectangle;
  }

  public draw(target: CanvasRenderingTarget2D): void {
    const data = this.rectangle.getRenderData();

    if (!data) {
      return;
    }

    const { colors } = getThemeStore();

    target.useBitmapCoordinateSpace(({ context, horizontalPixelRatio, verticalPixelRatio }) => {
      const pixelRatio = Math.max(horizontalPixelRatio, verticalPixelRatio);

      const left = data.left * horizontalPixelRatio;
      const right = data.right * horizontalPixelRatio;
      const top = data.top * verticalPixelRatio;
      const bottom = data.bottom * verticalPixelRatio;

      context.save();

      if (data.showFill) {
        context.fillStyle = data.fillColor;
        context.fillRect(left, top, right - left, bottom - top);
      }

      context.lineWidth = UI.borderWidth * pixelRatio;
      context.strokeStyle = data.borderColor;
      context.strokeRect(left, top, right - left, bottom - top);

      drawRectangleText(context, {
        left,
        right,
        top,
        text: data.text,
        fontSize: data.fontSize,
        isBold: data.isBold,
        isItalic: data.isItalic,
        textColor: data.textColor,
        pixelRatio,
      });

      if (data.showHandles) {
        for (const handle of Object.values(data.handles)) {
          drawHandle(
            context,
            handle.x * horizontalPixelRatio,
            handle.y * verticalPixelRatio,
            horizontalPixelRatio,
            verticalPixelRatio,
            colors.chartLineColor,
            colors.chartBackground,
          );
        }
      }

      context.restore();
    });
  }
}

function drawRectangleText(
  context: CanvasRenderingContext2D,
  params: {
    left: number;
    right: number;
    top: number;
    text: string;
    fontSize: number;
    isBold: boolean;
    isItalic: boolean;
    textColor: string;
    pixelRatio: number;
  },
): void {
  const { left, top, text, fontSize, isBold, isItalic, textColor, pixelRatio } = params;

  if (!text.trim()) {
    return;
  }

  const lines = text.split('\n');
  const safeFontSize = Math.max(1, fontSize);
  const fontSizePx = safeFontSize * pixelRatio;
  const lineHeight = safeFontSize * UI.textLineHeightMultiplier * pixelRatio;
  const fontWeight = isBold ? '700 ' : '';
  const fontStyle = isItalic ? 'italic ' : '';
  const textOffset = UI.textOffset * pixelRatio;

  const textX = left;
  const blockHeight = lines.length * lineHeight;
  const firstLineY = top - textOffset - blockHeight + lineHeight / 2;

  context.save();

  context.font = `${fontStyle}${fontWeight}${fontSizePx}px Inter, sans-serif`;
  context.fillStyle = textColor;
  context.textAlign = 'left';
  context.textBaseline = 'middle';

  lines.forEach((line, index) => {
    context.fillText(line, textX, firstLineY + index * lineHeight);
  });

  context.restore();
}

function drawHandle(
  context: CanvasRenderingContext2D,
  x: number,
  y: number,
  horizontalPixelRatio: number,
  verticalPixelRatio: number,
  strokeColor: string,
  fillColor: string,
): void {
  const width = UI.handleSize * horizontalPixelRatio;
  const height = UI.handleSize * verticalPixelRatio;
  const left = x - width / 2;
  const top = y - height / 2;

  context.save();
  context.fillStyle = fillColor;
  context.strokeStyle = strokeColor;
  context.lineWidth = UI.handleBorderWidth * Math.max(horizontalPixelRatio, verticalPixelRatio);

  context.beginPath();
  context.rect(left, top, width, height);
  context.fill();
  context.stroke();

  context.restore();
}

import { IPrimitivePaneRenderer, IPrimitivePaneView, PrimitivePaneViewZOrder } from 'lightweight-charts';

import { RectanglePaneRenderer } from './paneRenderer';
import { Rectangle } from './rectangle';

export class RectanglePaneView implements IPrimitivePaneView {
  private readonly rectangle: Rectangle;

  constructor(rectangle: Rectangle) {
    this.rectangle = rectangle;
  }

  public update(): void {}

  public renderer(): IPrimitivePaneRenderer {
    return new RectanglePaneRenderer(this.rectangle);
  }

  public zOrder(): PrimitivePaneViewZOrder {
    return 'top';
  }
}


import { IChartApi, ISeriesApi, SeriesType } from 'lightweight-charts';
import { BehaviorSubject, Observable, Subscription } from 'rxjs';

import { EventManager } from '@core';
import { DOMModel } from '@core/DOMModel';
import { Drawing } from '@core/Drawings';

import { EntitySettingsModal } from '@src/components/EntitySettingsModal';
import { drawingLabelById, drawingsMap, DrawingsNames } from '@src/constants';
import { ModalRenderer } from '@src/core/ModalRenderer';
import { SeriesStrategies } from '@src/modules/series-strategies/SeriesFactory';
import { ActiveDrawingTool } from '@src/types';

interface DrawingsManagerParams {
  eventManager: EventManager;
  mainSeries$: Observable<SeriesStrategies | null>;
  lwcChart: IChartApi;
  DOM: DOMModel;
  container: HTMLElement;
  modalRenderer: ModalRenderer;
  paneId: number,
}

export interface DrawingSnapshotItem {
  id: string;
  drawingName: DrawingsNames;
  state: unknown;
}

interface CreateDrawingOptions {
  id?: string;
  state?: unknown;
  shouldUpdateDrawingsList?: boolean;
}

export type DrawingsManagerSnapshot = DrawingSnapshotItem[];

export class DrawingsManager {
  private eventManager: EventManager;
  private lwcChart: IChartApi;
  private DOM: DOMModel;
  private container: HTMLElement;
  private modalRenderer: ModalRenderer;

  private mainSeries: SeriesStrategies | null = null;
  private subscriptions = new Subscription();
  private drawings$ = new BehaviorSubject<Drawing[]>([]);
  private activeTool$ = new BehaviorSubject<ActiveDrawingTool>('crosshair');
  private endlessMode$ = new BehaviorSubject(false);
  private recreateScheduled = false;
  private pendingSnapshot: DrawingsManagerSnapshot | null = null;
  private paneId: number;

  constructor({ eventManager, mainSeries$, lwcChart, DOM, container, modalRenderer, paneId }: DrawingsManagerParams) {
    this.DOM = DOM;
    this.eventManager = eventManager;
    this.paneId = paneId;
    this.lwcChart = lwcChart;
    this.container = container;
    this.modalRenderer = modalRenderer;

    this.subscriptions.add(
      mainSeries$.subscribe((series) => {
        if (!series) {
          return;
        }

        this.mainSeries = series;
        this.drawings$.value.forEach((drawing) => drawing.rebind(series));

        if (this.pendingSnapshot) {
          const snapshot = this.pendingSnapshot;
          this.pendingSnapshot = null;
          this.setSnapshot(snapshot);
        }
      }),
    );

    window.addEventListener('pointerup', this.handlePointerUp);
    this.container.addEventListener('click', this.handleClick);
    this.container.addEventListener('pointerdown', this.handlePointerDown);
  }

  private handlePointerDown = (): void => {
    this.DOM.refreshEntities();
  };

  private handlePointerUp = (): void => {
    this.DOM.refreshEntities();
    this.updateActiveTool();
  };

  private handleClick = (): void => {
    this.DOM.refreshEntities();
    this.updateActiveTool();
  };

  private updateActiveTool = (): void => {
    const hasPendingDrawing = this.drawings$.value.some((drawing) => drawing.isCreationPending());

    if (hasPendingDrawing) {
      return;
    }

    const activeTool = this.activeTool$.value;
    const isSingleInstanceTool = activeTool !== 'crosshair' && drawingsMap[activeTool]?.singleInstance;

    if (activeTool !== 'crosshair' && this.endlessMode$.value && !isSingleInstanceTool) {
      if (this.recreateScheduled) {
        return;
      }

      this.recreateScheduled = true;

      queueMicrotask(() => {
        this.recreateScheduled = false;

        const currentTool = this.activeTool$.value;
        const hasPendingAfterTick = this.drawings$.value.some((drawing) => drawing.isCreationPending());

        if (currentTool === 'crosshair') {
          return;
        }

        if (!this.endlessMode$.value) {
          return;
        }

        if (drawingsMap[currentTool]?.singleInstance) {
          return;
        }

        if (hasPendingAfterTick) {
          return;
        }

        this.createDrawing(currentTool);
      });

      return;
    }

    this.activeTool$.next('crosshair');
  };

  private removeDrawing = (id: string): void => {
    const drawing = this.drawings$.value.find((item) => item.id === id);

    if (!drawing) {
      return;
    }

    this.removeDrawings([drawing]);
  };

  private removeDrawingsByName(name: DrawingsNames, shouldUpdateTool = true): void {
    const drawingsToRemove = this.drawings$.value.filter((drawing) => drawing.getDrawingName() === name);

    this.removeDrawings(drawingsToRemove, shouldUpdateTool);
  }

  private removePendingDrawings(shouldUpdateTool = true): void {
    const drawingsToRemove = this.drawings$.value.filter((drawing) => drawing.isCreationPending());

    this.removeDrawings(drawingsToRemove, shouldUpdateTool);
  }

  private removeDrawings(drawingsToRemove: Drawing[], shouldUpdateTool = true): void {
    if (!drawingsToRemove.length) {
      return;
    }

    drawingsToRemove.forEach((drawing) => {
      drawing.destroy();
      this.DOM.removeEntity(drawing);
    });

    this.drawings$.next(this.drawings$.value.filter((drawing) => !drawingsToRemove.includes(drawing)));

    if (shouldUpdateTool) {
      this.updateActiveTool();
    }

    this.DOM.refreshEntities();
  }

  public addDrawingForce = (name: DrawingsNames): void => {
    this.removePendingDrawings(false);

    if (drawingsMap[name].singleInstance) {
      this.removeDrawingsByName(name, false);
    }

    this.activeTool$.next(name);
    this.createDrawing(name);
    this.DOM.refreshEntities();
  };

  private createDrawing(name: DrawingsNames, options: CreateDrawingOptions = {}): Drawing {
    if (!this.mainSeries) {
      throw new Error('[Drawings] main series is not defined');
    }

    const { id, state, shouldUpdateDrawingsList = true } = options;

    const config = drawingsMap[name];
    const drawingId = id ?? crypto.randomUUID();

    let createdDrawing: Drawing | null = null;

    const construct = (chart: IChartApi, series: ISeriesApi<SeriesType>) =>
      config.construct({
        chart,
        series,
        eventManager: this.eventManager,
        container: this.container,
        removeSelf: () => this.removeDrawing(drawingId),
        openSettings: () => {
          if (createdDrawing) {
            this.openSettings(createdDrawing);
          }
        },
      });

    const drawingFactory = (zIndex: number, moveUp: (id: string) => void, moveDown: (id: string) => void) =>
      new Drawing({
        lwcChart: this.lwcChart,
        mainSeries: this.mainSeries as SeriesStrategies,
        id: drawingId,
        drawingName: name,
        name: drawingLabelById[name],
        onDelete: this.removeDrawing,
        zIndex,
        moveDown,
        moveUp,
        construct,
        paneId: this.paneId
      });

    const entity = this.DOM.setEntity<Drawing>(drawingFactory);
    createdDrawing = entity;

    if (state !== undefined) {
      entity.setState(state);
    }

    if (shouldUpdateDrawingsList) {
      this.drawings$.next([...this.drawings$.value, entity]);
    }

    return entity;
  }

  public getSnapshot(): DrawingsManagerSnapshot {
    return this.drawings$.value
      .filter((drawing) => !drawing.isCreationPending())
      .map((drawing) => ({
        id: drawing.id,
        drawingName: drawing.getDrawingName(),
        state: drawing.getState(),
      }));
  }

  public setSnapshot(snapshot: DrawingsManagerSnapshot): void {
    if (!Array.isArray(snapshot)) {
      return;
    }

    if (!this.mainSeries) {
      this.pendingSnapshot = snapshot;
      return;
    }

    this.removeDrawings(this.drawings$.value, false);

    const restoredDrawings = snapshot.reduce<Drawing[]>((drawings, item) => {
      if (!drawingsMap[item.drawingName]) {
        return drawings;
      }

      drawings.push(
        this.createDrawing(item.drawingName, { id: item.id, state: item.state, shouldUpdateDrawingsList: false }),
      );

      return drawings;
    }, []);

    this.drawings$.next(restoredDrawings);
    this.activeTool$.next('crosshair');
    this.DOM.refreshEntities();
  }

  public setEndlessDrawingMode = (value: boolean): void => {
    this.endlessMode$.next(value);
  };

  public isEndlessDrawingsMode(): Observable<boolean> {
    return this.endlessMode$.asObservable();
  }

  public getActiveTool(): Observable<ActiveDrawingTool> {
    return this.activeTool$.asObservable();
  }

  public activateCrosshair(): void {
    this.removePendingDrawings(false);
    this.activeTool$.next('crosshair');
    this.DOM.refreshEntities();
  }

  public entities(): Observable<Drawing[]> {
    return this.drawings$.asObservable();
  }

  private openSettings = (drawing: Drawing) => {
    const tabs = drawing.getSettingsTabs();

    if (!tabs.length || tabs.every((tab) => tab.fields.length === 0)) {
      return;
    }

    let settings = drawing.getSettings();

    this.modalRenderer.renderComponent(
      <EntitySettingsModal
        tabs={tabs}
        values={settings}
        onChange={(nextSettings) => {
          settings = nextSettings;
        }}
        initialTabKey={tabs[0]?.key}
      />,
      {
        size: 'sm',
        title: drawing.name,
        onSave: () => drawing.updateSettings(settings),
      },
    );
  };

  public getDrawings(): Drawing[] {
    return this.drawings$.value;
  }

  public hideAll(): void {
    this.drawings$.value.forEach((drawing) => drawing.hide());
    this.DOM.refreshEntities();
  }

  public destroy(): void {
    window.removeEventListener('pointerup', this.handlePointerUp);
    this.container.removeEventListener('click', this.handleClick);
    this.container.removeEventListener('pointerdown', this.handlePointerDown);

    this.drawings$.value.forEach((drawing) => drawing.destroy());

    this.subscriptions.unsubscribe();
    this.drawings$.complete();
    this.activeTool$.complete();
    this.endlessMode$.complete();
  }
}

import { IChartApi, ISeriesApi, SeriesType } from 'lightweight-charts';

import { DOMObject, DOMObjectParams } from '@core/DOMObject';
import { ISeriesDrawing } from '@core/Drawings/common';
import { DrawingsNames } from '@src/constants';
import { SeriesStrategies } from '@src/modules/series-strategies/SeriesFactory';
import { SettingsTab, SettingsValues } from '@src/types/settings';

type IDrawing = DOMObject;

interface DrawingParams extends DOMObjectParams {
  drawingName: DrawingsNames;
  lwcChart: IChartApi;
  mainSeries: SeriesStrategies;
  onDelete: (id: string) => void;
  construct: (chart: IChartApi, series: ISeriesApi<SeriesType>) => ISeriesDrawing;
}

export class Drawing extends DOMObject implements IDrawing {
  private lwcDrawing: ISeriesDrawing;
  private mainSeries: SeriesStrategies;
  private drawingName: DrawingsNames;

  constructor({
    lwcChart,
    name,
    mainSeries,
    drawingName,
    id,
    onDelete,
    zIndex,
    moveUp,
    moveDown,
    construct,
    paneId
  }: DrawingParams) {
    super({ id, name, zIndex, onDelete, moveUp, moveDown, paneId });

    this.lwcDrawing = construct(lwcChart, mainSeries);
    this.onDelete = onDelete;
    this.mainSeries = mainSeries;
    this.drawingName = drawingName;
  }

  public delete() {
    this.destroy();
    super.delete();
  }

  public getDrawingName(): DrawingsNames {
    return this.drawingName;
  }

  public getLwcDrawing() {
    return this.lwcDrawing;
  }

  public show() {
    this.lwcDrawing.show();
    super.show();
  }

  public hide() {
    this.lwcDrawing.hide();
    super.hide();
  }

  public rebind = (nextMainSeries: SeriesStrategies) => {
    this.lwcDrawing.rebind(nextMainSeries);
    this.mainSeries = nextMainSeries;
  };

  public isCreationPending(): boolean {
    return this.lwcDrawing.isCreationPending();
  }

  public shouldShowInObjectTree(): boolean {
    return this.lwcDrawing.shouldShowInObjectTree();
  }

  public getState(): unknown {
    return this.lwcDrawing.getState();
  }

  public setState(state: unknown): void {
    this.lwcDrawing.setState(state);
  }

  public getSettings(): SettingsValues {
    return this.lwcDrawing.getSettings();
  }

  public updateSettings(settings: SettingsValues): void {
    this.lwcDrawing.updateSettings(settings);
  }

  public getSettingsTabs(): SettingsTab[] {
    return this.lwcDrawing.getSettingsTabs();
  }

  public hasSettings(): boolean {
    return this.getSettingsTabs().some((tab) => tab.fields.length > 0);
  }

  public destroy() {
    this.mainSeries.detachPrimitive(this.lwcDrawing);
    this.lwcDrawing.destroy();
  }
}

import { IChartApi, IPaneApi, Time } from 'lightweight-charts';

import { BehaviorSubject, Subscription } from 'rxjs';

import { ChartTooltip } from '@components/ChartTooltip';
import { LegendComponent } from '@components/Legend';
import { ChartMouseEvents } from '@core/ChartMouseEvents';
import { ContainerManager } from '@core/ContainerManager';
import { DataSource } from '@core/DataSource';
import { DOMModel } from '@core/DOMModel';
import { DrawingsManager, DrawingsManagerSnapshot } from '@core/DrawingsManager';
import { EventManager } from '@core/EventManager';
import { Indicator } from '@core/Indicator';
import { Legend } from '@core/Legend';
import { ReactRenderer } from '@core/ReactRenderer';
import { TooltipService } from '@core/Tooltip';
import { UIRenderer } from '@core/UIRenderer';
import { EntitySettingsModal } from '@src/components/EntitySettingsModal';
import { DrawingsNames, indicatorLabelById } from '@src/constants';
import { ModalRenderer } from '@src/core/ModalRenderer';
import { SeriesFactory, SeriesStrategies } from '@src/modules/series-strategies/SeriesFactory';
import { OHLCConfig, TooltipConfig } from '@src/types';
import { DOMObjectSnapshot, IndicatorSnapshot, ISerializable, PaneSnapshot } from '@src/types/snapshot';
import { ensureDefined } from '@src/utils';

export interface PaneParams {
  id: number;
  lwcChart: IChartApi;
  eventManager: EventManager;
  DOM: DOMModel;
  isMainPane: boolean;
  ohlcConfig: OHLCConfig;
  dataSource: DataSource | null; // todo: deal with dataSource. На каких то пейнах он нужен, на каких то нет
  basedOn?: Pane; // Pane на котором находится главная серия, или серия, по которой строятся серии на текущем пейне
  subscribeChartEvent: ChartMouseEvents['subscribe'];
  tooltipConfig: TooltipConfig;
  onDelete: () => void;
  chartContainer: HTMLElement;
  modalRenderer: ModalRenderer;
}

// todo: Pane, ему должна принадлежать mainSerie, а также IndicatorManager и drawingsManager, mouseEvents. Также перекинуть соответствующие/необходимые свойства из чарта, и из чарта удалить
// todo: Учитывать, что есть линейка, которая рисуется одна для всех пейнов
// todo: в CompareManage, при создании нового пейна для сравнения - инициализируем новый dataSource, принадлежащий только конкретному пейну. Убираем возможность добавлять индикаторы на такие пейны
// todo: на каждый символ свой DataSource (учитывать что есть MainPane и "главный" DataSource, который инициализиурется во время старта moexChart)
// todo: сделать два разных представления для compare, в зависимости от отображения на главном пейне или на второстепенном

export class Pane implements ISerializable<PaneSnapshot> {
  private readonly id: number;
  private isMain: boolean;
  private mainSeries: BehaviorSubject<SeriesStrategies | null> = new BehaviorSubject<SeriesStrategies | null>(null); // Main Series. Exists in a single copy
  private legend!: Legend;
  private tooltip: TooltipService | undefined;

  private indicatorsMap: BehaviorSubject<Map<string, Indicator>> = new BehaviorSubject<Map<string, Indicator>>(
    new Map(),
  );

  private lwcPane: IPaneApi<Time>;
  private lwcChart: IChartApi;

  private eventManager: EventManager;
  private drawingsManager: DrawingsManager;

  private legendContainer!: HTMLElement;
  private paneOverlayContainer!: HTMLElement;
  private legendRenderer!: UIRenderer;
  private tooltipRenderer: UIRenderer | undefined;
  private modalRenderer: ModalRenderer;

  private mainSerieSub!: Subscription;
  private subscribeChartEvent: ChartMouseEvents['subscribe'];
  private onDelete: () => void;
  private subscriptions = new Subscription();

  private last = false; // временное решение чтобы блочить удаление не последнего пейна

  constructor({
    lwcChart,
    eventManager,
    dataSource,
    DOM,
    isMainPane,
    ohlcConfig,
    id,
    basedOn,
    subscribeChartEvent,
    tooltipConfig,
    onDelete,
    chartContainer,
    modalRenderer,
  }: PaneParams) {
    this.onDelete = onDelete;
    this.eventManager = eventManager;
    this.lwcChart = lwcChart;
    this.modalRenderer = modalRenderer;
    this.subscribeChartEvent = subscribeChartEvent;
    this.isMain = isMainPane ?? false;
    this.id = id;

    this.initializeLegend({ ohlcConfig });

    if (isMainPane) {
      this.lwcPane = this.lwcChart.panes()[this.id];
    } else {
      this.lwcPane = this.lwcChart.addPane(true);
    }

    this.tooltip = new TooltipService({
      config: tooltipConfig,
      legend: this.legend,
      paneOverlayContainer: this.paneOverlayContainer,
    });

    this.tooltipRenderer = new ReactRenderer(this.paneOverlayContainer);

    this.tooltipRenderer.renderComponent(
      <ChartTooltip
        formatObs={this.eventManager.getChartOptionsModel()}
        timeframeObs={this.eventManager.getTimeframeObs()}
        viewModel={this.tooltip.getTooltipViewModel()}
        // ohlcConfig={this.legend.getConfig()}
        ohlcConfig={ohlcConfig}
        tooltipConfig={this.tooltip.getConfig()}
      />,
    );

    if (dataSource) {
      this.initializeMainSerie({ lwcChart, dataSource });
    } else if (basedOn) {
      this.mainSeries = basedOn?.getMainSerie();
    } else {
      console.error('[Pane]: There is no any mainSerie for new pane');
    }

    this.drawingsManager = new DrawingsManager({
      // todo: менеджер дровингов должен быть один на чарт, не на пейн
      eventManager,
      DOM,
      mainSeries$: this.mainSeries.asObservable(),
      lwcChart,
      container: chartContainer,
      modalRenderer: this.modalRenderer,
      paneId: this.id,
    });

    this.subscriptions.add(
      this.drawingsManager.entities().subscribe((drawings) => {
        const hasRuler = drawings.some((drawing) => drawing.getDrawingName() === DrawingsNames.ruler);
        this.legendContainer.style.display = hasRuler ? 'none' : '';
      }),
    );
  }

  public setIsLast(isLast: boolean): void {
    this.last = isLast;
  }

  public isMainPane = () => {
    return this.isMain;
  };

  public isLast = () => {
    return this.last;
  };

  public getDrawingsSnapshot(): DrawingsManagerSnapshot {
    return this.drawingsManager.getSnapshot();
  }

  public setDrawingsSnapshot(snapshot: DrawingsManagerSnapshot): void {
    this.drawingsManager.setSnapshot(snapshot);
  }

  public getMainSerie = () => {
    return this.mainSeries;
  };

  public getId = () => {
    return this.id;
  };

  public setIndicator(indicatorId: string, indicator: Indicator): void {
    const map = this.indicatorsMap.value;

    map.set(indicatorId, indicator);

    this.indicatorsMap.next(map);
  }

  public removeIndicator(indicatorId: string): void {
    const map = this.indicatorsMap.value;

    map.delete(indicatorId);

    this.indicatorsMap.next(map);

    if (map.size === 0 && !this.isMain) {
      this.destroy();
    }
  }

  public getDrawingManager(): DrawingsManager {
    return this.drawingsManager;
  }

  private initializeLegend({ ohlcConfig }: { ohlcConfig: OHLCConfig }) {
    const { legendContainer, paneOverlayContainer } = ContainerManager.createPaneContainers();
    this.legendContainer = legendContainer;
    this.paneOverlayContainer = paneOverlayContainer;
    this.legendRenderer = new ReactRenderer(legendContainer);

    requestAnimationFrame(() => {
      setTimeout(() => {
        const lwcPaneElement = this.lwcPane.getHTMLElement();
        if (!lwcPaneElement) return;
        lwcPaneElement.style.position = 'relative';
        lwcPaneElement.appendChild(legendContainer);
        lwcPaneElement.appendChild(paneOverlayContainer);
      }, 0);
    });

    // todo: переписать код ниже под логику пейнов
    // /*
    //   Внутри lightweight-chart DOM построен как таблица из 3 td
    //   [0] left priceScale, [1] center chart, [2] right priceScale
    //   Кладём легенду в td[1] и тогда легенда сама будет адаптироваться при изменении ширины шкал
    // */
    // requestAnimationFrame(() => {
    //   const root = chartAreaContainer.querySelector('.tv-lightweight-charts');
    //   console.log(root)
    //   const table = root?.querySelector('table');
    //   console.log(table)
    //
    //   const htmlCollectionOfPanes = table?.getElementsByTagName('td')
    //   console.log(htmlCollectionOfPanes)
    //
    //   const centerId = htmlCollectionOfPanes?.[1];
    //   console.log(centerId)
    //
    //   if (centerId && legendContainer && legendContainer.parentElement !== centerId) {
    //     centerId.appendChild(legendContainer);
    //   }
    // });
    // /*
    //   Внутри lightweight-chart DOM построен как таблица из 3 td
    //   [0] left priceScale, [1] center chart, [2] right priceScale
    //   Кладём легенду в td[1] и тогда легенда сама будет адаптироваться при изменении ширины шкал
    // */
    // requestAnimationFrame(() => {
    //   const root = chartAreaContainer.querySelector('.tv-lightweight-charts');
    //   const table = root?.querySelector('table');
    //   const centerId = table?.getElementsByTagName('td')?.[1];
    //
    //   if (centerId && legendContainer && legendContainer.parentElement !== centerId) {
    //     centerId.appendChild(legendContainer);
    //   }
    // });

    this.legend = new Legend({
      config: ohlcConfig,
      indicators: this.indicatorsMap,
      eventManager: this.eventManager,
      subscribeChartEvent: this.subscribeChartEvent,
      mainSeries: this.isMain ? this.mainSeries : null,
      paneId: this.id,
      openIndicatorSettings: (indicatorId, indicator) => {
        let settings = indicator.getSettings();

        this.modalRenderer.renderComponent(
          <EntitySettingsModal
            tabs={[{ key: 'arguments', label: 'Аргументы', fields: indicator.getSettingsConfig() }]}
            values={settings}
            onChange={(nextSettings) => {
              settings = nextSettings;
            }}
            initialTabKey="arguments"
          />,
          {
            size: 'sm',
            title: indicatorLabelById[indicatorId],
            onSave: () => indicator.updateSettings(settings),
          },
        );
      },
      // todo: throw isMainPane
    });

    this.legendRenderer.renderComponent(
      <LegendComponent
        ohlcConfig={this.legend.getConfig()}
        viewModel={this.legend.getLegendViewModel()}
      />,
    );
  }

  private initializeMainSerie({ lwcChart, dataSource }: { lwcChart: IChartApi; dataSource: DataSource }) {
    this.mainSerieSub = this.eventManager.subscribeSeriesSelected((nextSeries) => {
      this.mainSeries.value?.destroy();

      const next = ensureDefined(SeriesFactory.create(nextSeries))({
        lwcChart,
        dataSource,
        mainSymbol$: this.eventManager.getSymbol(),
        mainSerie$: this.mainSeries,
      });

      this.mainSeries.next(next);
    });
  }

  public getSnapshot(): PaneSnapshot {
    const indicators: (DOMObjectSnapshot & IndicatorSnapshot)[] = [];

    this.indicatorsMap.value.forEach((ind) => {
      indicators.push(ind.getSnapshot());
    });

    const snap = {
      isMain: this.isMain,
      id: this.id,
      indicators,
      drawings: this.getDrawingsSnapshot(),
    };

    return snap;
  }

  public destroy() {
    this.subscriptions.unsubscribe();
    this.tooltip?.destroy();
    this.legend?.destroy();
    this.legendRenderer.destroy();

    this.tooltipRenderer?.destroy();
    this.indicatorsMap.complete();

    this.mainSerieSub?.unsubscribe();

    if (this.isMain) {
      this.mainSeries.value?.destroy();
      this.mainSeries?.complete();
    }

    try {
      this.lwcChart.removePane(this.id);
    } catch (e) {
      console.log(e);
    }

    this.onDelete();
  }
}


import { DataSource } from '@core/DataSource';
import { DrawingsManager, DrawingsManagerSnapshot } from '@core/DrawingsManager';
import { Pane, PaneParams } from '@core/Pane';
import { ISerializable, PaneSnapshot } from '@src/types/snapshot';

interface PaneManagerParams extends Omit<PaneParams, 'isMainPane' | 'id' | 'basedOn' | 'onDelete'> {
  panesSnapshot: PaneSnapshot[];
}

// todo: PaneManager, регулирует порядок пейнов. Знает про MainPane.
// todo: Также перекинуть соответствующие/необходимые свойства из чарта, и из чарта удалить
// todo: в CompareManage, при создании нового пейна для сравнения - инициализируем новый dataSource, принадлежащий только конкретному пейну. Убираем возможность добавлять индикаторы на такие пейны
// todo: на каждый символ свой DataSource (учитывать что есть MainPane и "главный" DataSource, который инициализиурется во время старта moexChart)
// todo: сделать два разных представления для compare, в зависимости от отображения на главном пейне или на второстепенном

export class PaneManager implements ISerializable<PaneSnapshot[]> {
  private mainPane: Pane;
  private paneChartInheritedParams: PaneManagerParams & { isMainPane: boolean };
  private panesMap: Map<number, Pane> = new Map<number, Pane>();
  private panesIdIterator = 0;

  constructor(params: PaneManagerParams) {
    this.paneChartInheritedParams = { ...params, isMainPane: false };

    this.mainPane = new Pane({ ...params, isMainPane: true, id: 0, onDelete: () => {} });

    this.panesMap.set(this.panesIdIterator++, this.mainPane);
    this.setup(params.panesSnapshot);
  }

  private setup(panesSnapshot: PaneSnapshot[]) {
    panesSnapshot.forEach((paneSnap: PaneSnapshot) => {
      const { isMain, id, indicators, drawings } = paneSnap;

      this.panesMap.get(id)?.destroy();

      if (isMain) {
        this.mainPane = new Pane({ ...this.paneChartInheritedParams, isMainPane: true, id: 0, onDelete: () => {} });

        this.panesMap.set(id, this.mainPane);

        this.mainPane.setDrawingsSnapshot(drawings);
      } else {
        const pane = this.addPane();
        pane.setDrawingsSnapshot(drawings);
      }
      const lastPane = Array.from(this.panesMap.values()).at(-1);

      lastPane?.setIsLast(true);
    });
  }

  public getPaneById(id: number): Pane | undefined {
    return this.panesMap.get(id);
  }

  public getDrawingsSnapshot(): DrawingsManagerSnapshot {
    return this.mainPane.getDrawingsSnapshot();
  }

  public setDrawingsSnapshot(snapshot: DrawingsManagerSnapshot): void {
    this.mainPane.setDrawingsSnapshot(snapshot);
  }

  public getPanes() {
    return this.panesMap;
  }

  public getMainPane: () => Pane = () => {
    return this.mainPane;
  };

  public addPane(dataSource?: DataSource): Pane {
    const id = this.panesIdIterator++;

    const newPane = new Pane({
      ...this.paneChartInheritedParams,
      id,
      dataSource: dataSource ?? null,
      basedOn: dataSource ? undefined : this.mainPane,
      onDelete: () => {
        this.panesIdIterator--;
        this.panesMap.delete(id);

        const prevPane = Array.from(this.panesMap.values()).at(-1);
        prevPane?.setIsLast(true);
      },
    });

    const prevPane = Array.from(this.panesMap.values()).at(-1);

    prevPane?.setIsLast(false);
    newPane.setIsLast(true);

    this.panesMap.set(id, newPane);

    return newPane;
  }

  public getDrawingsManager(): DrawingsManager {
    // todo: temp
    return this.mainPane.getDrawingManager();
  }

  public getSnapshot(): PaneSnapshot[] {
    const res: PaneSnapshot[] = [];
    this.panesMap.forEach((pane) => {
      res.push(pane.getSnapshot());
    });

    return res;
  }
}

import { ChartSnapshot, ISerializable, PaneSnapshot } from '@src/types/snapshot';
import dayjs from 'dayjs';

import {
  ChartOptions,
  createChart,
  CrosshairMode,
  DeepPartial,
  IChartApi,
  IRange,
  LocalizationOptionsBase,
  LogicalRange,
  Time,
  UTCTimestamp,
} from 'lightweight-charts';

import { BehaviorSubject, combineLatest, Observable, Subscription } from 'rxjs';
import { map, withLatestFrom } from 'rxjs/operators';

import { ChartMouseEvents } from '@core/ChartMouseEvents';
import { DataSource } from '@core/DataSource';
import { DOMModel } from '@core/DOMModel';
import { DrawingsManager } from '@core/DrawingsManager';
import { EventManager } from '@core/EventManager';
import { IndicatorManager } from '@core/IndicatorManager';
import { ModalRenderer } from '@core/ModalRenderer';
import { PaneManager } from '@core/PaneManager';
import { CompareManager } from '@src/core/CompareManager';
import { SeriesStrategies } from '@src/modules/series-strategies/SeriesFactory';
import { getThemeStore } from '@src/theme/store';
import { ThemeKey, ThemeMode } from '@src/theme/types';
import {
  Candle,
  ChartOptionsModel,
  ChartSeriesType,
  ChartTypeOptions,
  Direction,
  OHLCConfig,
  TooltipConfig,
} from '@src/types';
import { Defaults } from '@src/types/defaults';
import { DayjsOffset, Intervals, intervalsToDayjs } from '@src/types/intervals';

import { createTickMarkFormatter, formatDate } from '@src/utils/formatter';
import flatten from 'lodash-es/flatten';

export interface ChartConfig extends Partial<ChartOptionsModel> {
  container: HTMLElement;
  seriesTypes: ChartSeriesType[];
  theme: ThemeKey;
  mode?: ThemeMode;
  chartOptions?: ChartTypeOptions;
  localization?: LocalizationOptionsBase;
}

export enum Resize {
  Shrink,
  Expand,
}

const HISTORY_LOAD_THRESHOLD = 50;

interface ChartParams {
  params: {
    dataSource: DataSource;
    eventManager: EventManager;
    modalRenderer: ModalRenderer;
    ohlcConfig: OHLCConfig;
    tooltipConfig: TooltipConfig;
    panes: PaneSnapshot[];
  },
  lwcChartConfig: ChartConfig
}

/**
 * Абстракция над библиотекой для построения графиков
 */
export class Chart implements ISerializable<ChartSnapshot>{
  private lwcChart!: IChartApi;
  private container: HTMLElement;
  private eventManager: EventManager;
  private paneManager!: PaneManager;
  private compareManager: CompareManager;
  private mouseEvents: ChartMouseEvents;
  private indicatorManager: IndicatorManager;
  private optionsSubscription: Subscription;
  private dataSource: DataSource;
  private chartConfig: Omit<ChartConfig, 'theme' | 'mode'>;
  private mainSeries: BehaviorSubject<SeriesStrategies | null> = new BehaviorSubject<SeriesStrategies | null>(null); // Main Series. Exists in a single copy
  private DOM: DOMModel;

  private isPointerDown = false;
  private didResetOnDrag = false;

  private subscriptions = new Subscription();

  private currentInterval: Intervals | null = null;

  private activeSymbols: string[] = [];

  private historyBatchRunning = false;

  constructor({
    params,
    lwcChartConfig
  }: ChartParams) {

    const {
      eventManager,
      dataSource,
      modalRenderer,
      ohlcConfig,
      tooltipConfig,
      panes: panesSnapshot,
    } = params

    this.eventManager = eventManager;
    this.dataSource = dataSource;
    this.container = lwcChartConfig.container;
    this.chartConfig = lwcChartConfig;

    this.lwcChart = createChart(this.container, getOptions(lwcChartConfig));

    this.optionsSubscription = this.eventManager
      .getChartOptionsModel()
      .subscribe(({ dateFormat, timeFormat, showTime }) => {
        const configToApply = { ...lwcChartConfig, dateFormat, timeFormat, showTime };

        this.lwcChart.applyOptions({
          ...getOptions(configToApply),
          localization: {
            timeFormatter: (time: UTCTimestamp) => formatDate(time, dateFormat, timeFormat, showTime),
          },
        });
      });

    this.subscriptions.add(this.optionsSubscription);

    this.mouseEvents = new ChartMouseEvents({ lwcChart: this.lwcChart, container: this.container });

    this.mouseEvents.subscribe('wheel', this.onWheel);
    this.mouseEvents.subscribe('pointerDown', this.onPointerDown);
    this.mouseEvents.subscribe('pointerMove', this.onPointerMove);
    this.mouseEvents.subscribe('pointerUp', this.onPointerUp);
    this.mouseEvents.subscribe('pointerCancel', this.onPointerUp);

    this.DOM = new DOMModel({ modalRenderer });

    this.paneManager = new PaneManager({
      eventManager: this.eventManager,
      panesSnapshot,
      lwcChart: this.lwcChart,
      dataSource,
      DOM: this.DOM,
      ohlcConfig,
      subscribeChartEvent: this.subscribeChartEvent,
      chartContainer: this.container,
      tooltipConfig,
      modalRenderer,
    });

    this.indicatorManager = new IndicatorManager({
      eventManager,
      initialIndicators: flatten(panesSnapshot.map((pane) => pane.indicators.map((ind) => ({...ind, paneId: pane.id})) )),
      DOM: this.DOM,
      dataSource: this.dataSource,
      lwcChart: this.lwcChart,
      paneManager: this.paneManager,
      chartOptions: lwcChartConfig.chartOptions,
    });

    this.compareManager = new CompareManager({
      chart: this.lwcChart,
      initialIndicators: flatten(panesSnapshot.map((pane) => pane.indicators.map((ind) => ({...ind, paneId: pane.id})) )),
      eventManager: this.eventManager,
      dataSource: this.dataSource,
      indicatorManager: this.indicatorManager,
      paneManager: this.paneManager,
    });

    this.setupDataSourceSubs();
    this.setupHistoricalDataLoading();
  }

  public getPriceScaleWidth(direction: Direction): number {
    try {
      const priceScale = this.lwcChart.priceScale(direction);

      return priceScale ? priceScale.width() : 0;
    } catch {
      return 0;
    }
  }

  public getDrawingsManager = (): DrawingsManager => {
    return this.paneManager.getDrawingsManager();
  };

  public getIndicatorManager = (): IndicatorManager => {
    return this.indicatorManager;
  };

  private onWheel = () => {
    this.eventManager.resetInterval({ history: false });
  };

  private onPointerDown = () => {
    this.isPointerDown = true;
    this.didResetOnDrag = false;
  };

  private onPointerMove = () => {
    if (!this.isPointerDown) return;
    if (this.didResetOnDrag) return;

    this.didResetOnDrag = true;
    this.eventManager.resetInterval({ history: false });
  };

  private onPointerUp = () => {
    this.isPointerDown = false;
  };

  public getDom(): DOMModel {
    return this.DOM;
  }

  public getMainSeries(): Observable<SeriesStrategies | null> {
    return this.mainSeries.asObservable();
  }

  public getCompareManager(): CompareManager {
    return this.compareManager;
  }

  public updateTheme(theme: ThemeKey, mode: ThemeMode) {
    this.lwcChart.applyOptions(getOptions({ ...this.chartConfig, theme, mode }));
  }

  public destroy(): void {
    this.mouseEvents.destroy();
    this.compareManager.clear();
    this.subscriptions.unsubscribe();
    this.lwcChart.remove();
  }

  public subscribeChartEvent: ChartMouseEvents['subscribe'] = (event, callback) =>
    this.mouseEvents.subscribe(event, callback);

  public unsubscribeChartEvent: ChartMouseEvents['unsubscribe'] = (event, callback) => {
    this.mouseEvents.unsubscribe(event, callback);
  };

  // todo: add/move to undo/redo model(eventManager)
  public scrollTimeScale = (direction: Direction) => {
    this.eventManager.resetInterval({ history: false });
    const diff = direction === Direction.Left ? -2 : 2;
    const currentPosition = this.lwcChart.timeScale().scrollPosition();
    this.lwcChart.timeScale().scrollToPosition(currentPosition + diff, false);
  };

  // todo: add/move to undo/redo model(eventManager)
  public zoomTimeScale = (resize: Resize) => {
    this.eventManager.resetInterval({ history: false });
    const diff = resize === Resize.Shrink ? -1 : 1;

    const currentRange = this.lwcChart.timeScale().getVisibleRange();
    if (!currentRange) return;

    const { from, to } = currentRange as IRange<number>;
    if (!from || !to) return;

    const next: IRange<Time> = {
      from: (from + (to - from) * 0.1 * diff) as Time,
      to: to as Time,
    };
    this.lwcChart.timeScale().setVisibleRange(next);
  };

  // todo: add to undo/redo model(eventManager)
  public resetZoom = () => {
    this.eventManager.resetInterval({ history: false });
    this.lwcChart.timeScale().resetTimeScale();
    this.lwcChart.priceScale(Direction.Right).setAutoScale(true);
    this.lwcChart.priceScale(Direction.Left).setAutoScale(true);
  };

  public getRealtimeApi() {
    return {
      getTimeframe: () => this.eventManager.getTimeframe(),
      getSymbols: () => this.activeSymbols,
      update: (symbol: string, candle: Candle) => {
        this.dataSource.updateRealtime(symbol, candle);
      },
    };
  }

  public getSnapshot(): ChartSnapshot {
    return {
      panes: this.paneManager.getSnapshot(),
      chartSeriesType: this.eventManager.exportChartSettings().seriesSelected,
      timeframe: this.eventManager.exportChartSettings().timeframe,
      symbol: this.activeSymbols[0]
    }
  }

  private scheduleHistoryBatch = () => {
    if (this.historyBatchRunning) return;

    this.historyBatchRunning = true;

    requestAnimationFrame(() => {
      const symbols = this.activeSymbols.slice();

      Promise.all(symbols.map((s) => this.dataSource.loadMoreHistory(s))).finally(() => {
        this.historyBatchRunning = false;

        const range = this.lwcChart.timeScale().getVisibleLogicalRange();
        if (range && range.from < HISTORY_LOAD_THRESHOLD) {
          this.scheduleHistoryBatch();
        }
      });
    });
  };

  private setupDataSourceSubs() {
    const getWarmupFrom = (): number => {
      if (this.currentInterval && this.currentInterval !== Intervals.All) {
        return getIntervalRange(this.currentInterval).from;
      }

      const range = this.lwcChart.timeScale().getVisibleRange();
      if (!range) return 0;

      const { from } = range as IRange<number>;
      return from as number;
    };

    const warmupSymbols = (symbols: string[]) => {
      if (!symbols.length) return;

      const from = getWarmupFrom();
      if (!from) return;

      Promise.all(symbols.map((symbol) => this.dataSource.loadTill(symbol, from))).catch((error) => {
        console.error('[Chart] Ошибка при прогреве символов:', error);
      });
    };
    const symbols$ = combineLatest([this.eventManager.symbol(), this.compareManager.itemsObs()]).pipe(
      map(([main, items]) => Array.from(new Set([main, ...items.map((i) => i.symbol)]))),
    );

    this.subscriptions.add(
      this.eventManager
        .getInterval()
        .pipe(withLatestFrom(symbols$))
        .subscribe(([interval, symbols]) => {
          this.currentInterval = interval;

          if (!interval) return;

          if (interval === Intervals.All) {
            Promise.all(symbols.map((s) => this.dataSource.loadAllHistory(s)))
              .then(() => {
                requestAnimationFrame(() => this.lwcChart.timeScale().fitContent());
              })
              .catch((error) => console.error('[Chart] Ошибка при загрузке всей истории:', error));

            return;
          }

          const { from, to } = getIntervalRange(interval);

          Promise.all(symbols.map((s) => this.dataSource.loadTill(s, from)))
            .then(() => {
              this.lwcChart.timeScale().setVisibleRange({ from: from as Time, to: to as Time });
            })
            .catch((error) => {
              console.error('[Chart] Ошибка при применении интервала:', error);
            });
        }),
    );

    this.subscriptions.add(
      symbols$.subscribe((symbols) => {
        const prevSymbols = this.activeSymbols;
        this.activeSymbols = symbols;

        this.dataSource.setSymbols(symbols);

        const prevSet = new Set(prevSymbols);
        const added: string[] = [];

        for (let i = 0; i < symbols.length; i += 1) {
          const s = symbols[i];
          if (!s) continue;
          if (prevSet.has(s)) continue;
          added.push(s);
        }

        if (added.length) {
          warmupSymbols(added);
        }
      }),
    );

    this.subscriptions.add(
      combineLatest([
        this.eventManager.symbol(),
        this.compareManager.itemsObs(),
        this.mainSeries.asObservable(),
      ]).subscribe(([main, items, serie]) => {
        if (!serie) return;

        const title = items.length ? main : '';
        serie.getLwcSeries().applyOptions({ title });
      }),
    );
  }

  private setupHistoricalDataLoading(): void {
    // todo (не)вызвать loadMoreHistory после проверки на необходимость дозагрузки после смены таймфрейма
    this.mouseEvents.subscribe('visibleLogicalRangeChange', (logicalRange: LogicalRange | null) => {
      if (!logicalRange) return;
      if (this.currentInterval === Intervals.All) return;

      const needsMoreData = logicalRange.from < HISTORY_LOAD_THRESHOLD;
      if (!needsMoreData) return;

      this.scheduleHistoryBatch();
    });
  }
}

function getIntervalRange(interval: Intervals): { from: number; to: number } {
  const { value, unit } = intervalsToDayjs[interval] as DayjsOffset;

  const from = Math.floor(dayjs().subtract(value, unit).valueOf() / 1000);
  const to = Math.floor(dayjs().valueOf() / 1000);

  return { from, to };
}

function getOptions(config: ChartConfig): DeepPartial<ChartOptions> {
  const timeFormat = config.timeFormat ?? Defaults.timeFormat;
  const showTime = config.showTime ?? Defaults.showTime;

  const use12HourFormat = timeFormat === '12h';
  const timeFormatString = use12HourFormat ? 'h:mm A' : 'HH:mm';

  const { colors } = getThemeStore();

  return {
    width: config.container.clientWidth,
    height: config.container.clientHeight,
    autoSize: true,
    layout: {
      background: { color: colors.chartBackground },
      textColor: colors.chartTextPrimary,
    },
    grid: {
      vertLines: { color: colors.chartGridLine },
      horzLines: { color: colors.chartGridLine },
    },
    crosshair: {
      mode: CrosshairMode.Normal,
      vertLine: { color: colors.chartCrosshairLine, labelBackgroundColor: colors.chartCrosshairLabel, style: 0 },
      horzLine: { color: colors.chartCrosshairLine, labelBackgroundColor: colors.chartCrosshairLabel, style: 2 },
    },
    timeScale: {
      timeVisible: showTime,
      secondsVisible: false,
      tickMarkFormatter: createTickMarkFormatter(timeFormatString),
      borderVisible: false,
      allowBoldLabels: false,
    },
    rightPriceScale: {
      textColor: colors.chartTextPrimary,
      borderVisible: false,
    },
  };
}

export interface ISeriesApi<TSeriesType extends SeriesType, HorzScaleItem = Time, TData = SeriesDataItemTypeMap<HorzScaleItem>[TSeriesType], TOptions = SeriesOptionsMap[TSeriesType], TPartialOptions = SeriesPartialOptionsMap[TSeriesType]> {
	/**
	 * Returns current price formatter
	 *
	 * @returns Interface to the price formatter object that can be used to format prices in the same way as the chart does
	 */
	priceFormatter(): IPriceFormatter;
	/**
	 * Converts specified series price to pixel coordinate according to the series price scale
	 *
	 * @param price - Input price to be converted
	 * @returns Pixel coordinate of the price level on the chart
	 */
	priceToCoordinate(price: number): Coordinate | null;
	/**
	 * Converts specified coordinate to price value according to the series price scale
	 *
	 * @param coordinate - Input coordinate to be converted
	 * @returns Price value of the coordinate on the chart
	 */
	coordinateToPrice(coordinate: number): BarPrice | null;
	/**
	 * Returns bars information for the series in the provided [logical range](/time-scale.md#logical-range) or `null`, if no series data has been found in the requested range.
	 * This method can be used, for instance, to implement downloading historical data while scrolling to prevent a user from seeing empty space.
	 *
	 * @param range - The [logical range](/time-scale.md#logical-range) to retrieve info for.
	 * @returns The bars info for the given logical range.
	 * @example Getting bars info for current visible range
	 * ```js
	 * const barsInfo = series.barsInLogicalRange(chart.timeScale().getVisibleLogicalRange());
	 * console.log(barsInfo);
	 * ```
	 * @example Implementing downloading historical data while scrolling
	 * ```js
	 * function onVisibleLogicalRangeChanged(newVisibleLogicalRange) {
	 *     const barsInfo = series.barsInLogicalRange(newVisibleLogicalRange);
	 *     // if there less than 50 bars to the left of the visible area
	 *     if (barsInfo !== null && barsInfo.barsBefore < 50) {
	 *         // try to load additional historical data and prepend it to the series data
	 *     }
	 * }
	 *
	 * chart.timeScale().subscribeVisibleLogicalRangeChange(onVisibleLogicalRangeChanged);
	 * ```
	 */
	barsInLogicalRange(range: IRange<number>): BarsInfo<HorzScaleItem> | null;
	/**
	 * Applies new options to the existing series
	 * You can set options initially when you create series or use the `applyOptions` method of the series to change the existing options.
	 * Note that you can only pass options you want to change.
	 *
	 * @param options - Any subset of options.
	 */
	applyOptions(options: TPartialOptions): void;
	/**
	 * Returns currently applied options
	 *
	 * @returns Full set of currently applied options, including defaults
	 */
	options(): Readonly<TOptions>;
	/**
	 * Returns the API interface for controlling the price scale that this series is currently attached to.
	 *
	 * @returns IPriceScaleApi An interface for controlling the price scale (axis component) currently used by this series
	 *
	 * @remarks
	 * Important: The returned PriceScaleApi is bound to the specific price scale (by ID and pane) that the series
	 * is using at the time this method is called. If you later move the series to a different pane or attach it
	 * to a different price scale (e.g., from 'right' to 'left'), the previously returned PriceScaleApi will NOT
	 * follow the series. It will continue to control the original price scale it was created for.
	 *
	 * To control the new price scale after moving a series, you must call this method again to get a fresh
	 * PriceScaleApi instance for the current price scale.
	 */
	priceScale(): IPriceScaleApi;
	/**
	 * Sets or replaces series data.
	 *
	 * @param data - Ordered (earlier time point goes first) array of data items. Old data is fully replaced with the new one.
	 * @example Setting data to a line series
	 * ```js
	 * lineSeries.setData([
	 *     { time: '2018-12-12', value: 24.11 },
	 *     { time: '2018-12-13', value: 31.74 },
	 * ]);
	 * ```
	 * @example Setting data to a bars (or candlestick) series
	 * ```js
	 * barSeries.setData([
	 *     { time: '2018-12-19', open: 141.77, high: 170.39, low: 120.25, close: 145.72 },
	 *     { time: '2018-12-20', open: 145.72, high: 147.99, low: 100.11, close: 108.19 },
	 * ]);
	 * ```
	 */
	setData(data: TData[]): void;
	/**
	 * Adds new data item to the existing set (or updates the latest item if times of the passed/latest items are equal).
	 *
	 * @param bar - A single data item to be added. Time of the new item must be greater or equal to the latest existing time point.
	 * If the new item's time is equal to the last existing item's time, then the existing item is replaced with the new one.
	 * @param historicalUpdate - If true, allows updating an existing data point that is not the latest bar. Default is false.
	 * Updating older data using `historicalUpdate` will be slower than updating the most recent data point.
	 * @example Updating line series data
	 * ```js
	 * lineSeries.update({
	 *     time: '2018-12-12',
	 *     value: 24.11,
	 * });
	 * ```
	 * @example Updating bar (or candlestick) series data
	 * ```js
	 * barSeries.update({
	 *     time: '2018-12-19',
	 *     open: 141.77,
	 *     high: 170.39,
	 *     low: 120.25,
	 *     close: 145.72,
	 * });
	 * ```
	 */
	update(bar: TData, historicalUpdate?: boolean): void;
	/**
	 * Returns a bar data by provided logical index.
	 *
	 * @param logicalIndex - Logical index
	 * @param mismatchDirection - Search direction if no data found at provided logical index.
	 * @returns Original data item provided via setData or update methods.
	 * @example
	 * ```js
	 * const originalData = series.dataByIndex(10, LightweightCharts.MismatchDirection.NearestLeft);
	 * ```
	 */
	dataByIndex(logicalIndex: number, mismatchDirection?: MismatchDirection): TData | null;
	/**
	 * Returns all the bar data for the series.
	 *
	 * @returns Original data items provided via setData or update methods.
	 * @example
	 * ```js
	 * const originalData = series.data();
	 * ```
	 */
	data(): readonly TData[];
	/**
	 * Subscribe to the data changed event. This event is fired whenever the `update` or `setData` method is evoked
	 * on the series.
	 *
	 * @param handler - Handler to be called on a data changed event.
	 * @example
	 * ```js
	 * function myHandler() {
	 *     const data = series.data();
	 *     console.log(`The data has changed. New Data length: ${data.length}`);
	 * }
	 *
	 * series.subscribeDataChanged(myHandler);
	 * ```
	 */
	subscribeDataChanged(handler: DataChangedHandler): void;
	/**
	 * Unsubscribe a handler that was previously subscribed using {@link subscribeDataChanged}.
	 *
	 * @param handler - Previously subscribed handler
	 * @example
	 * ```js
	 * chart.unsubscribeDataChanged(myHandler);
	 * ```
	 */
	unsubscribeDataChanged(handler: DataChangedHandler): void;
	/**
	 * Creates a new price line
	 *
	 * @param options - Any subset of options, however `price` is required.
	 * @example
	 * ```js
	 * const priceLine = series.createPriceLine({
	 *     price: 80.0,
	 *     color: 'green',
	 *     lineWidth: 2,
	 *     lineStyle: LightweightCharts.LineStyle.Dotted,
	 *     axisLabelVisible: true,
	 *     title: 'P/L 500',
	 * });
	 * ```
	 */
	createPriceLine(options: CreatePriceLineOptions): IPriceLine;
	/**
	 * Removes the price line that was created before.
	 *
	 * @param line - A line to remove.
	 * @example
	 * ```js
	 * const priceLine = series.createPriceLine({ price: 80.0 });
	 * series.removePriceLine(priceLine);
	 * ```
	 */
	removePriceLine(line: IPriceLine): void;
	/**
	 * Returns an array of price lines.
	 */
	priceLines(): IPriceLine[];
	/**
	 * Return current series type.
	 *
	 * @returns Type of the series.
	 * @example
	 * ```js
	 * const lineSeries = chart.addSeries(LineSeries);
	 * console.log(lineSeries.seriesType()); // "Line"
	 *
	 * const candlestickSeries = chart.addCandlestickSeries();
	 * console.log(candlestickSeries.seriesType()); // "Candlestick"
	 * ```
	 */
	seriesType(): TSeriesType;
	/**
	 * Attaches additional drawing primitive to the series
	 *
	 * @param primitive - any implementation of ISeriesPrimitive interface
	 */
	attachPrimitive(primitive: ISeriesPrimitive<HorzScaleItem>): void;
	/**
	 * Detaches additional drawing primitive from the series
	 *
	 * @param primitive - implementation of ISeriesPrimitive interface attached before
	 * Does nothing if specified primitive was not attached
	 */
	detachPrimitive(primitive: ISeriesPrimitive<HorzScaleItem>): void;
	/**
	 * Move the series to another pane.
	 *
	 * If the pane with the specified index does not exist, the pane will be created.
	 *
	 * @param paneIndex - The index of the pane. Should be a number between 0 and the total number of panes.
	 */
	moveToPane(paneIndex: number): void;
	/**
	 * Gets the zero-based index of this series within the list of all series on the current pane.
	 *
	 * @returns The current index of the series in the pane's series collection.
	 */
	seriesOrder(): number;
	/**
	 * Sets the zero-based index of this series within the pane's series collection, thereby adjusting its rendering order.
	 *
	 * Note:
	 * - The chart may automatically recalculate this index after operations such as removing other series or moving this series to a different pane.
	 * - If the provided index is less than 0, equal to, or greater than the number of series, it will be clamped to a valid range.
	 * - Price scales derive their formatters from the series with the lowest index; changing the order may affect the price scale's formatting
	 *
	 * @param order - The desired zero-based index to set for this series within the pane.
	 */
	setSeriesOrder(order: number): void;
	/**
	 * Returns the pane to which the series is currently attached.
	 *
	 * @returns Pane API object to control the pane
	 */
	getPane(): IPaneApi<HorzScaleItem>;
}