---

import { getThemeStore } from '@src/theme';
import { t } from '@src/translations';

import type { SettingField, SettingsTab, SettingsValues } from '@src/types';

export interface SliderPositionStyle {
  lineColor: string;
  lineWidth: number;
  positiveFillColor: string;
  negativeFillColor: string;
  textColor: string;
  fontSize: number;
}

export interface SliderPositionCalculationSettings {
  accountSize: number;
  risk: number;
  lotSize: number;
  leverage: number;
  quantityPrecision: number;
}

export interface SliderPositionArguments {
  entryPrice: number;
  targetPrice: number;
  stopPrice: number;
}

export type SliderPositionSettings = SettingsValues &
  SliderPositionStyle &
  SliderPositionCalculationSettings;

export function createDefaultSettings(): SliderPositionSettings {
  const { colors } = getThemeStore();

  return {
    accountSize: 1000,
    risk: 25,
    lotSize: 1,
    leverage: 10000,
    quantityPrecision: 3,
    lineColor: colors.chartCrosshairLine,
    lineWidth: 1,
    positiveFillColor: colors.sliderPositiveFill,
    negativeFillColor: colors.sliderNegativeFill,
    textColor: colors.chartPriceLineText,
    fontSize: 10,
  };
}

export function getSliderPositionSettingsTabs(
  settings: SliderPositionSettings,
  position: SliderPositionArguments,
): SettingsTab[] {
  const inputFields: SettingField[] = [
    {
      key: 'accountSize',
      label: t('Account size'),
      type: 'number',
      defaultValue: settings.accountSize,
      min: 0,
    },
    {
      key: 'lotSize',
      label: t('Lot size'),
      type: 'number',
      defaultValue: settings.lotSize,
      min: 0.00000001,
    },
    {
      key: 'risk',
      label: t('Risk, %'),
      type: 'number',
      defaultValue: settings.risk,
      min: 0,
    },
    {
      key: 'entryPrice',
      label: t('Entry price'),
      type: 'number',
      defaultValue: position.entryPrice,
    },
    {
      key: 'leverage',
      label: t('Leverage'),
      type: 'number',
      defaultValue: settings.leverage,
      min: 1,
    },
    {
      key: 'targetPrice',
      label: t('Profit price'),
      type: 'number',
      defaultValue: position.targetPrice,
    },
    {
      key: 'stopPrice',
      label: t('Stop price'),
      type: 'number',
      defaultValue: position.stopPrice,
    },
    {
      key: 'quantityPrecision',
      label: t('QTY precision'),
      type: 'number',
      defaultValue: settings.quantityPrecision,
      min: 0,
      max: 16,
    },
  ];

  const styleFields: SettingField[] = [
    {
      key: 'lineColor',
      label: t('Line'),
      type: 'color',
      defaultValue: settings.lineColor,
    },
    {
      key: 'lineWidth',
      label: t('Line width'),
      type: 'number',
      defaultValue: settings.lineWidth,
      min: 1,
      max: 4,
    },
    {
      key: 'negativeFillColor',
      label: t('Stop color'),
      type: 'color',
      defaultValue: settings.negativeFillColor,
      toolbar: {
        control: 'color',
        role: 'fill',
      },
    },
    {
      key: 'positiveFillColor',
      label: t('Target color'),
      type: 'color',
      defaultValue: settings.positiveFillColor,
      toolbar: {
        control: 'color',
        role: 'fill',
      },
    },
    {
      key: 'textColor',
      label: t('Text'),
      type: 'color',
      defaultValue: settings.textColor,
      toolbar: {
        control: 'color',
        role: 'text',
      },
    },
    {
      key: 'fontSize',
      label: t('Font size'),
      type: 'number',
      defaultValue: settings.fontSize,
      min: 8,
      max: 24,
    },
  ];

  return [
    {
      key: 'inputs',
      label: t('Arguments'),
      fields: inputFields,
    },
    {
      key: 'style',
      label: t('Style'),
      fields: styleFields,
    },
  ];
}





import { round } from 'lodash-es';
import { skip } from 'rxjs';

import {
  CustomPriceAxisPaneView,
  CustomPriceAxisView,
  CustomTimeAxisPaneView,
  CustomTimeAxisView,
} from '@core/Drawings/axis';
import {
  getPriceDelta as getPriceDeltaFromCoordinates,
  getPriceFromYCoordinate,
  getPriceRangeInContainer,
  getTimeFromXCoordinate,
  getXCoordinateFromTime,
  getYCoordinateFromPrice,
  isPointInBounds,
  shiftTimeByPixels,
} from '@core/Drawings/helpers';
import { updateViews } from '@core/Drawings/utils';
import { SeriesDrawingBase } from '@src/core/Drawings/SeriesDrawingBase';
import { getThemeStore } from '@src/theme';
import { t } from '@src/translations';
import { Defaults } from '@src/types/defaults';
import {
  formatPercent,
  formatPrice,
  formatSignedNumber,
  getPercentPrecision,
  getPricePrecisionStep,
} from '@src/utils';
import { formatDate } from '@src/utils/formatter';

import { SliderPaneView } from './paneView';
import { createDefaultSettings, getSliderPositionSettingsTabs } from './settings';

import type { DrawingHandle } from '@core/Drawings/handles';
import type { AxisLabel, AxisSegment, Bounds, Point } from '@core/Drawings/types';
import type {
  BaseDrawingParams,
  ISeriesDrawing,
} from '@src/core/Drawings/SeriesDrawingBase';
import type { ChartOptionsModel, SettingsTab, SettingsValues } from '@src/types';
import type {
  IPrimitivePaneView,
  MouseEventHandler,
  MouseEventParams,
  PrimitiveHoveredItem,
  Time,
  UTCTimestamp,
} from 'lightweight-charts';
import type { Observable } from 'rxjs';
import type {
  SliderPositionArguments,
  SliderPositionSettings,
  SliderPositionStyle,
} from './settings';

type SliderSide = 'long' | 'short';
type SliderMode = 'idle' | 'ready' | 'dragging';
type DragTarget = 'body' | 'entry' | 'target' | 'stop' | 'end' | null;
type SliderHandleId = Exclude<DragTarget, 'body' | null>;
type TimeLabelKind = 'start' | 'end';
type PriceLabelKind = 'target' | 'entry' | 'stop';

interface SliderPositionParams extends BaseDrawingParams {
  side: SliderSide;
  resetTriggers?: Observable<unknown>[];
}

interface SliderPositionState {
  hidden: boolean;
  mode: SliderMode;
  startTime: Time | null;
  endTime: Time | null;
  entryPrice: number | null;
  stopPrice: number | null;
  targetPrice: number | null;
  riskRewardRatio: number;
  amount: number;
  settings: SliderPositionSettings;
}

interface PositionMetrics {
  qty: number;
  targetAmount: number;
  stopAmount: number;
  riskRewardRatio: number;
  openPnl: number;
}

interface SliderGeometry {
  startX: number;
  endX: number;
  leftX: number;
  rightX: number;
  entryY: number;
  stopY: number;
  targetY: number;
  entryPrice: number;
  stopPrice: number;
  targetPrice: number;
  profitTop: number;
  profitBottom: number;
  lossTop: number;
  lossBottom: number;
}

export interface SliderRenderData extends SliderGeometry, SliderPositionStyle {
  targetText: string;
  centerText: string;
  stopText: string;
  centerBoxColor: string;
  targetLabelDirection: 'up' | 'down';
  stopLabelDirection: 'up' | 'down';
  showLabels: boolean;
}

const HIT_TOLERANCE = 8;
const INITIAL_WIDTH_PX = 160;
const INITIAL_ZONE_OFFSET_PX = 60;
const DEFAULT_RISK_REWARD_RATIO = 1;

export class SliderPosition
  extends SeriesDrawingBase<SliderPositionSettings, SliderHandleId>
  implements ISeriesDrawing
{
  protected settings: SliderPositionSettings = createDefaultSettings();
  protected mode: SliderMode = 'idle';

  private readonly side: SliderSide;
  private readonly removeSelf?: () => void;
  private readonly openSettings?: () => void;
  private readonly clickHandler: MouseEventHandler<Time>;
  private readonly paneView: SliderPaneView;
  private readonly timeAxisPaneView: CustomTimeAxisPaneView;
  private readonly priceAxisPaneView: CustomPriceAxisPaneView;
  private readonly startTimeAxisView: CustomTimeAxisView;
  private readonly endTimeAxisView: CustomTimeAxisView;
  private readonly targetPriceAxisView: CustomPriceAxisView;
  private readonly entryPriceAxisView: CustomPriceAxisView;
  private readonly stopPriceAxisView: CustomPriceAxisView;

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

  private startTime: Time | null = null;
  private endTime: Time | null = null;
  private entryPrice: number | null = null;
  private stopPrice: number | null = null;
  private targetPrice: number | null = null;
  private activeDragTarget: DragTarget = null;
  private dragPointerId: number | null = null;
  private dragStartPoint: Point | null = null;
  private dragStateSnapshot: SliderPositionState | null = null;

  constructor({
    chart,
    series,
    side,
    container,
    interaction,
    formatObservable,
    resetTriggers = [],
    removeSelf,
    openSettings,
    initialEvent,
  }: SliderPositionParams) {
    super({ chart, series, container, interaction });

    this.side = side;
    this.removeSelf = removeSelf;
    this.openSettings = openSettings;
    this.clickHandler = (params) => this.handleChartClick(params);
    this.paneView = new SliderPaneView(this);

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

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

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

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

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

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

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

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

    resetTriggers.forEach((trigger) => {
      this.subscriptions.add(
        trigger.pipe(skip(1)).subscribe(() => {
          this.removeSelf?.();
        }),
      );
    });

    this.series.attachPrimitive(this);

    if (initialEvent) {
      this.handleChartClick(initialEvent);
    }
  }

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

  public getState(): SliderPositionState {
    return {
      hidden: this.hidden,
      mode: this.mode,
      startTime: this.startTime,
      endTime: this.endTime,
      entryPrice: this.entryPrice,
      stopPrice: this.stopPrice,
      targetPrice: this.targetPrice,
      riskRewardRatio: this.getCurrentRiskRewardRatio(),
      amount: this.settings.accountSize,
      settings: { ...this.settings },
    };
  }

  public setState(state: unknown): void {
    if (!state || typeof state !== 'object') {
      return;
    }

    const next = state as Partial<SliderPositionState>;

    this.hidden = next.hidden ?? this.hidden;
    this.mode = next.mode ?? this.mode;

    if (next.startTime !== undefined) {
      this.startTime = next.startTime;
    }

    if (next.endTime !== undefined) {
      this.endTime = next.endTime;
    }

    if (next.entryPrice !== undefined) {
      this.entryPrice = next.entryPrice;
    }

    if (next.stopPrice !== undefined) {
      this.stopPrice =
        next.stopPrice === null || this.entryPrice === null
          ? next.stopPrice
          : this.normalizeStop(this.entryPrice, next.stopPrice);
    }

    if (next.targetPrice !== undefined) {
      this.targetPrice =
        next.targetPrice === null || this.entryPrice === null
          ? next.targetPrice
          : this.normalizeTarget(this.entryPrice, next.targetPrice);
    } else if (
      this.entryPrice !== null &&
      this.stopPrice !== null &&
      typeof next.riskRewardRatio === 'number' &&
      next.riskRewardRatio >= 0
    ) {
      const risk = Math.abs(this.entryPrice - this.stopPrice);
      const direction = this.side === 'long' ? 1 : -1;

      this.targetPrice = this.normalizeTarget(
        this.entryPrice,
        this.entryPrice + risk * next.riskRewardRatio * direction,
      );
    }

    if (next.settings) {
      this.settings = {
        ...createDefaultSettings(),
        ...next.settings,
      };
    }

    if (typeof next.amount === 'number' && next.amount >= 0) {
      this.settings.accountSize = next.amount;
    }

    this.render();
  }

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

  public updateSettings(values: SettingsValues): void {
    const { entryPrice, targetPrice, stopPrice, ...settings } = values as Partial<
      SliderPositionSettings & SliderPositionArguments
    >;

    this.applyPositionArguments({ entryPrice, targetPrice, stopPrice });
    super.updateSettings(settings as SettingsValues);
  }

  public getSettingsTabs(): SettingsTab[] {
    return getSliderPositionSettingsTabs(this.settings, this.getPositionArguments());
  }

  public updateAllViews(): void {
    updateViews([
      this.paneView,
      this.timeAxisPaneView,
      this.priceAxisPaneView,
      this.startTimeAxisView,
      this.endTimeAxisView,
      this.targetPriceAxisView,
      this.entryPriceAxisView,
      this.stopPriceAxisView,
    ]);
  }

  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.startTimeAxisView, this.endTimeAxisView];
  }

  public priceAxisViews() {
    return [this.targetPriceAxisView, this.entryPriceAxisView, this.stopPriceAxisView];
  }

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

    const geometry = this.getGeometry();

    if (!geometry) {
      return null;
    }

    const metrics = this.getPositionMetrics(geometry, this.getPriceAtTime(this.endTime));
    const { colors } = getThemeStore();

    return {
      ...geometry,
      targetText: this.getTargetText(geometry, metrics.targetAmount),
      centerText: this.getCenterText(metrics),
      stopText: this.getStopText(geometry, metrics.stopAmount),
      centerBoxColor: metrics.openPnl >= 0 ? colors.chartCandleUp : colors.chartCandleDown,
      targetLabelDirection: this.side === 'long' ? 'up' : 'down',
      stopLabelDirection: this.side === 'long' ? 'down' : 'up',
      showLabels: this.isSelected(),
      ...this.settings,
    };
  }

  public getTimeBounds(): { left: number; right: number } | null {
    const start = this.getTimeCoordinate('start');
    const end = this.getTimeCoordinate('end');

    if (start === null || end === null) {
      return null;
    }

    return {
      left: Math.min(start, end),
      right: Math.max(start, end),
    };
  }

  public getTimeCoordinate(kind: TimeLabelKind): number | null {
    const time = kind === 'start' ? this.startTime : this.endTime;

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

    const coordinate = getXCoordinateFromTime(this.chart, time, this.series);

    return coordinate === null ? null : Number(coordinate);
  }

  public getTimeText(kind: TimeLabelKind): string {
    const time = kind === 'start' ? this.startTime : this.endTime;

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

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

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

    if (!geometry) {
      return null;
    }

    switch (kind) {
      case 'target':
        return geometry.targetY;
      case 'entry':
        return geometry.entryY;
      case 'stop':
        return geometry.stopY;
      default:
        return null;
    }
  }

  public getPriceText(kind: PriceLabelKind): string {
    const geometry = this.getGeometry();

    if (!geometry) {
      return '';
    }

    switch (kind) {
      case 'target':
        return formatPrice(geometry.targetPrice) ?? '';
      case 'entry':
        return formatPrice(geometry.entryPrice) ?? '';
      case 'stop':
        return formatPrice(geometry.stopPrice) ?? '';
      default:
        return '';
    }
  }

  protected getHoveredItem(x: number, y: number): PrimitiveHoveredItem | null {
    const point = { x, y };

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

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

    const dragTarget = this.getHandleTarget(point);

    if (!dragTarget) {
      return null;
    }

    let cursorStyle: PrimitiveHoveredItem['cursorStyle'] = 'grab';

    if (dragTarget === 'target' || dragTarget === 'stop') {
      cursorStyle = 'ns-resize';
    } else if (dragTarget === 'end') {
      cursorStyle = 'ew-resize';
    }

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

  protected getTimeAxisSegments(): AxisSegment[] {
    if (!this.isSelected()) {
      return [];
    }

    const bounds = this.getTimeBounds();

    if (!bounds) {
      return [];
    }

    const { colors } = getThemeStore();

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

  protected getPriceAxisSegments(): AxisSegment[] {
    if (!this.isSelected()) {
      return [];
    }

    const geometry = this.getGeometry();

    if (!geometry) {
      return [];
    }

    const { colors } = getThemeStore();

    return [
      {
        from: geometry.profitTop,
        to: geometry.profitBottom,
        color: colors.axisMarkerAreaFill,
      },
      {
        from: geometry.lossTop,
        to: geometry.lossBottom,
        color: colors.axisMarkerAreaFill,
      },
    ];
  }

  protected getTimeAxisLabel(kind: string): AxisLabel | null {
    if (!this.isSelected() || (kind !== 'start' && kind !== 'end')) {
      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,
    };
  }

  protected getPriceAxisLabel(kind: string): AxisLabel | null {
    if (kind !== 'target' && kind !== 'entry' && kind !== 'stop') {
      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();
    let backgroundColor = colors.axisMarkerLabelDefaultFill;

    if (labelKind === 'target') {
      backgroundColor = colors.axisMarkerLabelPositiveFill;
    } else if (labelKind === 'stop') {
      backgroundColor = colors.axisMarkerLabelNegativeFill;
    }

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

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

    super.bindEvents();
    this.chart.subscribeClick(this.clickHandler);
  }

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

    this.chart.unsubscribeClick(this.clickHandler);
    super.unbindEvents();
  }

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

    const point = this.getEventPoint(event as PointerEvent);

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

    event.preventDefault();
    event.stopPropagation();
    this.openSettings?.();
  };

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

    const point = this.getEventPoint(event);

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

      event.preventDefault();
      event.stopPropagation();
      this.select();
      return;
    }

    const dragTarget = this.getHandleTarget(point);

    if (!dragTarget) {
      this.deselect();
      return;
    }

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

    this.activeDragTarget = dragTarget;
    this.dragPointerId = event.pointerId;
    this.dragStartPoint = point;
    this.dragStateSnapshot = this.getState();
    this.mode = 'dragging';
  };

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

    event.preventDefault();
    this.applyDrag(this.getEventPoint(event));
    this.render();
  };

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

    this.activeDragTarget = null;
    this.dragPointerId = null;
    this.dragStartPoint = null;
    this.dragStateSnapshot = null;
    this.mode = 'ready';

    this.resolveReady?.();
    this.render();
  };

  protected getDrawingHandles(): readonly DrawingHandle<SliderHandleId>[] {
    const geometry = this.getGeometry();

    if (!geometry) {
      return [];
    }

    return [
      {
        id: 'target',
        x: geometry.startX,
        y: geometry.targetY,
      },
      {
        id: 'stop',
        x: geometry.startX,
        y: geometry.stopY,
      },
      {
        id: 'end',
        x: geometry.endX,
        y: geometry.entryY,
      },
      {
        id: 'entry',
        x: geometry.startX,
        y: geometry.entryY,
        shape: 'circle',
      },
    ];
  }

  private handleChartClick(params: MouseEventParams<Time>): void {
    // todo: привести к общему виду дровингов как handleChartClick => startDrawing
    if (this.hidden || !params.point || this.mode !== 'idle') {
      return;
    }

    const anchor = this.createAnchor(params);

    if (!anchor) {
      return;
    }

    const distance = this.getInitialZoneDistance(anchor.price, params.point.y);

    if (distance === null) {
      this.mode = 'ready';
      this.resolveReady?.();
      this.removeSelf?.();
      return;
    }

    const stopDirection = this.side === 'long' ? -1 : 1;
    const targetDirection = -stopDirection;

    this.startTime = anchor.time;
    this.endTime = this.shiftTime(anchor.time, INITIAL_WIDTH_PX) ?? anchor.time;
    this.entryPrice = anchor.price;
    this.stopPrice = this.normalizeStop(
      anchor.price,
      anchor.price + distance * stopDirection,
    );
    this.targetPrice = this.normalizeTarget(
      anchor.price,
      anchor.price + distance * targetDirection * DEFAULT_RISK_REWARD_RATIO,
    );

    this.mode = 'ready';
    this.resolveReady?.();
    this.render();
  }

  private applyDrag(point: Point): void {
    const snapshot = this.dragStateSnapshot;

    if (!snapshot) {
      return;
    }

    switch (this.activeDragTarget) {
      case 'body':
        this.moveWhole(snapshot, point);
        break;
      case 'entry':
        this.moveEntry(snapshot, point);
        break;
      case 'target':
        this.moveTarget(snapshot, point);
        break;
      case 'stop':
        this.moveStop(snapshot, point);
        break;
      case 'end':
        this.resizeEnd(snapshot, point);
        break;
      default:
        break;
    }
  }

  private moveEntry(snapshot: SliderPositionState, point: Point): void {
    if (snapshot.stopPrice === null || snapshot.targetPrice === null) {
      return;
    }

    const nextPrice = getPriceFromYCoordinate(this.series, point.y);

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

    const minDistance = getPricePrecisionStep();

    const minPrice =
      this.side === 'long'
        ? snapshot.stopPrice + minDistance
        : snapshot.targetPrice;

    const maxPrice =
      this.side === 'long'
        ? snapshot.targetPrice
        : snapshot.stopPrice - minDistance;

    if (minPrice > maxPrice) {
      return;
    }

    this.entryPrice = Math.max(minPrice, Math.min(nextPrice, maxPrice));
  }

  private moveWhole(snapshot: SliderPositionState, point: Point): void {
    if (snapshot.startTime === null || snapshot.endTime === null) {
      return;
    }

    if (
      snapshot.entryPrice === null ||
      snapshot.stopPrice === null ||
      snapshot.targetPrice === null ||
      !this.dragStartPoint
    ) {
      return;
    }

    const timeOffset = point.x - this.dragStartPoint.x;
    const priceOffset = getPriceDeltaFromCoordinates(
      this.series,
      this.dragStartPoint.y,
      point.y,
    );

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

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

    let nextEntryPrice = snapshot.entryPrice + priceOffset;
    let nextStopPrice = snapshot.stopPrice + priceOffset;
    let nextTargetPrice = snapshot.targetPrice + priceOffset;

    const range = getPriceRangeInContainer(this.series, this.container);

    if (range) {
      const minValue = Math.min(nextEntryPrice, nextStopPrice, nextTargetPrice);
      const maxValue = Math.max(nextEntryPrice, nextStopPrice, nextTargetPrice);

      if (minValue < range.min) {
        const shift = range.min - minValue;

        nextEntryPrice += shift;
        nextStopPrice += shift;
        nextTargetPrice += shift;
      }

      if (maxValue > range.max) {
        const shift = maxValue - range.max;

        nextEntryPrice -= shift;
        nextStopPrice -= shift;
        nextTargetPrice -= shift;
      }
    }

    this.startTime = nextStartTime;
    this.endTime = nextEndTime;
    this.entryPrice = nextEntryPrice;
    this.stopPrice = nextStopPrice;
    this.targetPrice = nextTargetPrice;
  }

  private moveStop(snapshot: SliderPositionState, point: Point): void {
    if (snapshot.entryPrice === null) {
      return;
    }

    const nextPrice = getPriceFromYCoordinate(this.series, point.y);

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

    this.stopPrice = this.normalizeStop(
      snapshot.entryPrice,
      this.clampPriceToRange(nextPrice),
    );
  }

  private moveTarget(snapshot: SliderPositionState, point: Point): void {
    if (snapshot.entryPrice === null) {
      return;
    }

    const nextPrice = getPriceFromYCoordinate(this.series, point.y);

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

    this.targetPrice = this.normalizeTarget(
      snapshot.entryPrice,
      this.clampPriceToRange(nextPrice),
    );
  }

  private resizeEnd(snapshot: SliderPositionState, point: Point): void {
    const nextEndTime = getTimeFromXCoordinate(this.chart, point.x);

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

    this.startTime = snapshot.startTime;
    this.endTime = nextEndTime;
  }

  private createAnchor(
    params: MouseEventParams<Time>,
  ): { time: Time; price: number } | null {
    if (!params.point || params.time === undefined) {
      return null;
    }

    const price = getPriceFromYCoordinate(this.series, params.point.y);

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

    return {
      time: params.time,
      price,
    };
  }

  private normalizeStop(entryPrice: number, price: number): number {
    const minDistance = getPricePrecisionStep();

    return this.side === 'long'
      ? Math.min(price, entryPrice - minDistance)
      : Math.max(price, entryPrice + minDistance);
  }

  private normalizeTarget(entryPrice: number, price: number): number {
    return this.side === 'long'
      ? Math.max(price, entryPrice)
      : Math.min(price, entryPrice);
  }

  private clampPriceToRange(price: number): number {
    const range = getPriceRangeInContainer(this.series, this.container);

    if (!range) {
      return price;
    }

    return Math.max(range.min, Math.min(price, range.max));
  }

  private getInitialZoneDistance(entryPrice: number, entryY: number): number | null {
    const { height } = this.container.getBoundingClientRect();
    const availableOffset = Math.min(entryY, height - entryY) - HIT_TOLERANCE;
    const offset = Math.min(INITIAL_ZONE_OFFSET_PX, availableOffset);

    if (offset <= 0) {
      return null;
    }

    const upperPrice = getPriceFromYCoordinate(this.series, entryY - offset);
    const lowerPrice = getPriceFromYCoordinate(this.series, entryY + offset);

    if (upperPrice === null || lowerPrice === null) {
      return null;
    }

    const minPrice = Math.min(upperPrice, lowerPrice);
    const maxPrice = Math.max(upperPrice, lowerPrice);

    const stopDistance =
      this.side === 'long' ? entryPrice - minPrice : maxPrice - entryPrice;

    const targetDistance =
      this.side === 'long' ? maxPrice - entryPrice : entryPrice - minPrice;

    if (stopDistance <= 0 || targetDistance <= 0) {
      return null;
    }

    const distance = Math.min(
      stopDistance,
      targetDistance / DEFAULT_RISK_REWARD_RATIO,
    );

    return distance >= getPricePrecisionStep() ? distance : null;
  }

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

  private getCurrentRiskRewardRatio(): number {
    if (
      this.entryPrice === null ||
      this.stopPrice === null ||
      this.targetPrice === null
    ) {
      return DEFAULT_RISK_REWARD_RATIO;
    }

    const risk = Math.abs(this.entryPrice - this.stopPrice);

    if (risk === 0) {
      return 0;
    }

    return Math.abs(this.targetPrice - this.entryPrice) / risk;
  }

  private getPriceAtTime(time: Time | null): number | null {
    if (typeof time !== 'number') {
      return null;
    }

    const data = this.series.data() ?? [];
    let lastPrice: number | null = null;

    for (const item of data) {
      if (typeof item.time !== 'number') {
        continue;
      }

      if (item.time > time) {
        break;
      }

      if ('close' in item && typeof item.close === 'number') {
        lastPrice = item.close;
      } else if ('value' in item && typeof item.value === 'number') {
        lastPrice = item.value;
      }
    }

    return lastPrice;
  }

  private getGeometry(): SliderGeometry | null {
    if (
      this.startTime === null ||
      this.endTime === null ||
      this.entryPrice === null ||
      this.stopPrice === null ||
      this.targetPrice === null
    ) {
      return null;
    }

    const startX = getXCoordinateFromTime(this.chart, this.startTime, this.series);
    const endX = getXCoordinateFromTime(this.chart, this.endTime, this.series);
    const entryY = getYCoordinateFromPrice(this.series, this.entryPrice);
    const stopY = getYCoordinateFromPrice(this.series, this.stopPrice);
    const targetY = getYCoordinateFromPrice(this.series, this.targetPrice);

    if (
      startX === null ||
      endX === null ||
      entryY === null ||
      stopY === null ||
      targetY === null
    ) {
      return null;
    }

    const start = Number(startX);
    const end = Number(endX);
    const entry = Number(entryY);
    const stop = Number(stopY);
    const target = Number(targetY);

    return {
      startX: start,
      endX: end,
      leftX: Math.min(start, end),
      rightX: Math.max(start, end),
      entryY: entry,
      stopY: stop,
      targetY: target,
      entryPrice: this.entryPrice,
      stopPrice: this.stopPrice,
      targetPrice: this.targetPrice,
      profitTop: Math.min(target, entry),
      profitBottom: Math.max(target, entry),
      lossTop: Math.min(stop, entry),
      lossBottom: Math.max(stop, entry),
    };
  }

  private getPositionArguments(): SliderPositionArguments {
    const entryPrice = this.entryPrice ?? 0;

    return {
      entryPrice,
      targetPrice: this.targetPrice ?? entryPrice,
      stopPrice: this.stopPrice ?? entryPrice,
    };
  }

  private applyPositionArguments(values: Partial<SliderPositionArguments>): void {
    if (typeof values.entryPrice === 'number') {
      this.entryPrice = values.entryPrice;
    }

    if (this.entryPrice === null) {
      return;
    }

    if (typeof values.targetPrice === 'number') {
      this.targetPrice = this.normalizeTarget(this.entryPrice, values.targetPrice);
    } else if (this.targetPrice !== null) {
      this.targetPrice = this.normalizeTarget(this.entryPrice, this.targetPrice);
    }

    if (typeof values.stopPrice === 'number') {
      this.stopPrice = this.normalizeStop(this.entryPrice, values.stopPrice);
    } else if (this.stopPrice !== null) {
      this.stopPrice = this.normalizeStop(this.entryPrice, this.stopPrice);
    }
  }

  private getPositionMetrics(
    geometry: SliderGeometry,
    selectedPrice: number | null,
  ): PositionMetrics {
    const riskDistance = Math.abs(geometry.entryPrice - geometry.stopPrice);
    const rewardDistance = Math.abs(geometry.targetPrice - geometry.entryPrice);
    const { accountSize, risk, lotSize, leverage, quantityPrecision } = this.settings;

    if (riskDistance === 0 || geometry.entryPrice <= 0) {
      return {
        qty: 0,
        targetAmount: accountSize,
        stopAmount: accountSize,
        riskRewardRatio: 0,
        openPnl: this.getOpenPnl(geometry.entryPrice, selectedPrice),
      };
    }

    const riskSize = (risk / 100) * accountSize;
    const qtyRisk = riskSize / riskDistance / lotSize;
    const qtyLeverage = (accountSize * leverage) / geometry.entryPrice / lotSize;
    const qty = round(Math.min(qtyRisk, qtyLeverage), quantityPrecision);
    const multiplier = lotSize;

    return {
      qty,
      targetAmount: accountSize + rewardDistance * qty * multiplier,
      stopAmount: accountSize - riskDistance * qty * multiplier,
      riskRewardRatio: rewardDistance / riskDistance,
      openPnl: this.getOpenPnl(geometry.entryPrice, selectedPrice),
    };
  }

  private getOpenPnl(entryPrice: number, selectedPrice: number | null): number {
    if (selectedPrice === null) {
      return 0;
    }

    return this.side === 'long'
      ? selectedPrice - entryPrice
      : entryPrice - selectedPrice;
  }

  private getTargetText(geometry: SliderGeometry, amount: number): string {
    const diff = Math.abs(geometry.targetPrice - geometry.entryPrice);
    const percent =
      geometry.entryPrice !== 0
        ? (diff / Math.abs(geometry.entryPrice)) * 100
        : 0;

    const formattedDiff = formatPrice(diff) ?? '0';
    const formattedAmount = formatPrice(amount, 2) ?? '0';

    return `${t('Target')}: ${formattedDiff} (${formatPercent(percent)}), ${t(
      'Amount',
    )}: ${formattedAmount}`;
  }

  private getCenterText(metrics: PositionMetrics): string {
    const formattedQty =
      formatPrice(metrics.qty, this.settings.quantityPrecision) ?? '0';
    const formattedRatio =
      formatPrice(metrics.riskRewardRatio, getPercentPrecision()) ?? '0';

    return [
      `${t('Open P&L')}: ${formatSignedNumber(metrics.openPnl)}, ${t(
        'Qty',
      )}: ${formattedQty}`,
      `${t('Risk/Reward Ratio')}: ${formattedRatio}`,
    ].join('\n');
  }

  private getStopText(geometry: SliderGeometry, amount: number): string {
    const diff = Math.abs(geometry.stopPrice - geometry.entryPrice);
    const percent =
      geometry.entryPrice !== 0
        ? (diff / Math.abs(geometry.entryPrice)) * 100
        : 0;

    const formattedDiff = formatPrice(diff) ?? '0';
    const formattedAmount = formatPrice(amount, 2) ?? '0';

    return `${t('Stop')}: ${formattedDiff} (${formatPercent(percent)}), ${t(
      'Amount',
    )}: ${formattedAmount}`;
  }

  private getHandleTarget(point: Point): DragTarget {
    const geometry = this.getGeometry();

    if (!geometry) {
      return null;
    }

    if (Math.abs(point.x - geometry.startX) <= HIT_TOLERANCE) {
      const entryDistance = Math.abs(point.y - geometry.entryY);

      if (entryDistance < 1) {
        return 'entry';
      }

      const pointerSide = Math.sign(point.y - geometry.entryY);
      const targetSide =
        Math.sign(geometry.targetY - geometry.entryY) ||
        -Math.sign(geometry.stopY - geometry.entryY);
      const stopSide =
        Math.sign(geometry.stopY - geometry.entryY) ||
        -Math.sign(geometry.targetY - geometry.entryY);

      if (
        pointerSide === targetSide &&
        Math.abs(point.y - geometry.targetY) <= HIT_TOLERANCE
      ) {
        return 'target';
      }

      if (
        pointerSide === stopSide &&
        Math.abs(point.y - geometry.stopY) <= HIT_TOLERANCE
      ) {
        return 'stop';
      }

      if (entryDistance <= HIT_TOLERANCE) {
        return 'entry';
      }
    }

    const handle = this.getDrawingHandleAtPoint(point);

    if (handle) {
      return handle.id;
    }

    const bounds: Bounds = {
      left: geometry.leftX,
      right: geometry.rightX,
      top: Math.min(geometry.targetY, geometry.stopY),
      bottom: Math.max(geometry.targetY, geometry.stopY),
    };

    return isPointInBounds(point, bounds) ? 'body' : null;
  }

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

    if (!geometry) {
      return false;
    }

    const bounds: Bounds = {
      left: geometry.leftX,
      right: geometry.rightX,
      top: Math.min(geometry.targetY, geometry.stopY),
      bottom: Math.max(geometry.targetY, geometry.stopY),
    };

    return isPointInBounds(point, bounds, HIT_TOLERANCE);
  }
}







import { CanvasRenderingTarget2D } from 'fancy-canvas';

import { drawRoundedRect } from '@core/Drawings/utils';
import { removeAlphaFromHex } from '@src/utils/removeAlphaFromHex';

import type { IPrimitivePaneRenderer } from 'lightweight-charts';
import type { SliderPositionStyle } from './settings';
import type { SliderPosition } from './sliderPosition';

const UI = {
  lineHeightMultiplier: 1.2,
  mainBoxHeight: 28,
  sideBoxHeight: 16,
  padding: 4,
  boxRadius: 4,
  labelOffset: 10,
};

export class SliderPaneRenderer implements IPrimitivePaneRenderer {
  private readonly slider: SliderPosition;

  constructor(slider: SliderPosition) {
    this.slider = slider;
  }

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

    if (!data) {
      return;
    }

    target.useBitmapCoordinateSpace(
      ({ context, horizontalPixelRatio, verticalPixelRatio, bitmapSize }) => {
        const left = data.leftX * horizontalPixelRatio;
        const right = data.rightX * horizontalPixelRatio;
        const entryY = data.entryY * verticalPixelRatio;
        const stopY = data.stopY * verticalPixelRatio;
        const targetY = data.targetY * verticalPixelRatio;
        const profitTop = data.profitTop * verticalPixelRatio;
        const profitBottom = data.profitBottom * verticalPixelRatio;
        const lossTop = data.lossTop * verticalPixelRatio;
        const lossBottom = data.lossBottom * verticalPixelRatio;
        const centerX = (left + right) / 2;
        const labelOffset = UI.labelOffset * verticalPixelRatio;

        const targetBoxHeight = getTextBoxHeight(
          data.targetText,
          data,
          UI.sideBoxHeight,
          verticalPixelRatio,
        );
        const centerBoxHeight = getTextBoxHeight(
          data.centerText,
          data,
          UI.mainBoxHeight,
          verticalPixelRatio,
        );
        const stopBoxHeight = getTextBoxHeight(
          data.stopText,
          data,
          UI.sideBoxHeight,
          verticalPixelRatio,
        );

        const targetLabelY = getOuterLabelCenterY(
          targetY,
          data.targetLabelDirection,
          targetBoxHeight,
          labelOffset,
        );
        const stopLabelY = getOuterLabelCenterY(
          stopY,
          data.stopLabelDirection,
          stopBoxHeight,
          labelOffset,
        );
        const centerLabelY = getCenterLabelCenterY(
          entryY,
          targetY,
          stopY,
          centerBoxHeight,
          labelOffset,
          bitmapSize.height,
        );

        context.save();

        context.fillStyle = data.positiveFillColor;
        context.fillRect(left, profitTop, right - left, profitBottom - profitTop);

        context.fillStyle = data.negativeFillColor;
        context.fillRect(left, lossTop, right - left, lossBottom - lossTop);

        context.lineWidth =
          data.lineWidth * Math.max(horizontalPixelRatio, verticalPixelRatio);

        drawHorizontalLine(
          context,
          left,
          right,
          targetY,
          removeAlphaFromHex(data.positiveFillColor),
        );
        drawHorizontalLine(context, left, right, entryY, data.lineColor);
        drawHorizontalLine(
          context,
          left,
          right,
          stopY,
          removeAlphaFromHex(data.negativeFillColor),
        );

        if (data.showLabels) {
          drawTextBox(
            context,
            centerX,
            targetLabelY,
            data.targetText,
            data.positiveFillColor,
            data,
            horizontalPixelRatio,
            verticalPixelRatio,
            UI.sideBoxHeight,
          );
          drawTextBox(
            context,
            centerX,
            centerLabelY,
            data.centerText,
            data.centerBoxColor,
            data,
            horizontalPixelRatio,
            verticalPixelRatio,
            UI.mainBoxHeight,
          );
          drawTextBox(
            context,
            centerX,
            stopLabelY,
            data.stopText,
            data.negativeFillColor,
            data,
            horizontalPixelRatio,
            verticalPixelRatio,
            UI.sideBoxHeight,
          );
        }

        context.restore();
      },
    );
  }
}

function getOuterLabelCenterY(
  coordinate: number,
  direction: 'up' | 'down',
  boxHeight: number,
  labelOffset: number,
): number {
  const offset = labelOffset + boxHeight / 2;

  return direction === 'up' ? coordinate - offset : coordinate + offset;
}

function getCenterLabelCenterY(
  entryY: number,
  targetY: number,
  stopY: number,
  boxHeight: number,
  labelOffset: number,
  viewportHeight: number,
): number {
  const targetSpace = Math.abs(targetY - entryY);
  const stopSpace = Math.abs(stopY - entryY);

  const direction =
    targetSpace < stopSpace
      ? stopY < entryY
        ? -1
        : 1
      : targetY < entryY
        ? -1
        : 1;

  return clampTextBoxCenter(
    entryY + direction * (labelOffset + boxHeight / 2),
    boxHeight,
    viewportHeight,
  );
}

function clampTextBoxCenter(
  coordinate: number,
  boxHeight: number,
  viewportHeight: number,
): number {
  if (viewportHeight <= boxHeight) {
    return viewportHeight / 2;
  }

  const halfHeight = boxHeight / 2;

  return Math.max(halfHeight, Math.min(coordinate, viewportHeight - halfHeight));
}

function drawHorizontalLine(
  context: CanvasRenderingContext2D,
  left: number,
  right: number,
  y: number,
  color: string,
): void {
  context.strokeStyle = color;
  context.beginPath();
  context.moveTo(left, y);
  context.lineTo(right, y);
  context.stroke();
}

function drawTextBox(
  context: CanvasRenderingContext2D,
  centerX: number,
  centerY: number,
  text: string,
  fillColor: string,
  style: SliderPositionStyle,
  horizontalPixelRatio: number,
  verticalPixelRatio: number,
  fixedHeight: number,
): void {
  context.save();

  const lines = text.split('\n');
  const fontSize = style.fontSize * verticalPixelRatio;
  const lineHeight =
    Math.round(style.fontSize * UI.lineHeightMultiplier) * verticalPixelRatio;
  const paddingX = UI.padding * horizontalPixelRatio;
  const boxHeight = getTextBoxHeight(text, style, fixedHeight, verticalPixelRatio);
  const radius = UI.boxRadius * Math.max(horizontalPixelRatio, verticalPixelRatio);

  context.font = `${fontSize}px Inter, sans-serif`;
  context.textAlign = 'center';
  context.textBaseline = 'middle';

  let maxTextWidth = 0;

  for (const line of lines) {
    maxTextWidth = Math.max(maxTextWidth, context.measureText(line).width);
  }

  const width = maxTextWidth + paddingX * 2;
  const x = centerX - width / 2;
  const y = centerY - boxHeight / 2;

  context.fillStyle = fillColor;
  context.beginPath();
  drawRoundedRect(context, x, y, width, boxHeight, radius);
  context.fill();

  context.fillStyle = style.textColor;

  if (lines.length === 1) {
    context.fillText(lines[0], centerX, centerY);
    context.restore();
    return;
  }

  const textBlockHeight = lines.length * lineHeight;
  const firstLineY = centerY - textBlockHeight / 2 + lineHeight / 2;

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

  context.restore();
}

function getTextBoxHeight(
  text: string,
  style: SliderPositionStyle,
  fixedHeight: number,
  verticalPixelRatio: number,
): number {
  const linesCount = text.split('\n').length;
  const lineHeight =
    Math.round(style.fontSize * UI.lineHeightMultiplier) * verticalPixelRatio;
  const paddingY = UI.padding * verticalPixelRatio;
  const minHeight = fixedHeight * verticalPixelRatio;

  return Math.max(minHeight, linesCount * lineHeight + paddingY * 2);
}





import { SliderPaneRenderer } from '@core/Drawings/sliderPosition/paneRenderer';
import { SliderPaneView } from '@core/Drawings/sliderPosition/paneView';
import {
  createDefaultSettings,
  getSliderPositionSettingsTabs,
} from '@core/Drawings/sliderPosition/settings';
import {
  SliderPosition,
  type SliderRenderData,
} from '@core/Drawings/sliderPosition/sliderPosition';
import {
  createCanvasTarget,
  createDrawingTestEnvironment,
  createPointerEvent,
} from '../drawingTestUtils';

import type { DrawingHandle } from '@core/Drawings/handles';
import type { AxisLabel, AxisSegment } from '@core/Drawings/types';
import type {
  Coordinate,
  MouseEventParams,
  PrimitiveHoveredItem,
  Time,
} from 'lightweight-charts';

jest.mock('@src/theme', () => ({
  getThemeStore: () => ({
    colors: {
      chartCrosshairLine: '#999999',
      sliderPositiveFill: '#00aa0044',
      sliderNegativeFill: '#aa000044',
      chartPriceLineText: '#ffffff',
      chartCandleUp: '#00aa00',
      chartCandleDown: '#aa0000',
      axisMarkerAreaFill: '#2962ff44',
      axisMarkerLabelFill: '#2962ff',
      axisMarkerLabelDefaultFill: '#777777',
      axisMarkerLabelPositiveFill: '#00aa00',
      axisMarkerLabelNegativeFill: '#aa0000',
    },
  }),
}));

jest.mock('@src/translations', () => ({
  t: (value: string) => value,
}));

jest.mock('@src/types/defaults', () => ({
  Defaults: {
    dateFormat: 'date',
    timeFormat: '24h',
    showTime: true,
  },
}));

jest.mock('@src/utils', () => ({
  formatPrice: (value: number, precision = 4) => {
    const factor = 10 ** precision;

    return String(Math.round(value * factor) / factor);
  },
  formatPercent: (value: number) => {
    const factor = 100;

    return `${Math.round(value * factor) / factor}%`;
  },
  formatSignedNumber: (value: number) => String(value),
  getPercentPrecision: () => 2,
  getPricePrecisionStep: () => 0.01,
}));

jest.mock('@src/utils/formatter', () => ({
  formatDate: (value: number) => `date:${value}`,
}));

class TestSliderPosition extends SliderPosition {
  public handles(): readonly DrawingHandle[] {
    return this.getDrawingHandles();
  }

  public timeSegments(): AxisSegment[] {
    return this.getTimeAxisSegments();
  }

  public priceSegments(): AxisSegment[] {
    return this.getPriceAxisSegments();
  }

  public timeLabel(kind: string): AxisLabel | null {
    return this.getTimeAxisLabel(kind);
  }

  public priceLabel(kind: string): AxisLabel | null {
    return this.getPriceAxisLabel(kind);
  }

  public hovered(x: number, y: number): PrimitiveHoveredItem | null {
    return this.getHoveredItem(x, y);
  }

  public pointerDown(event: PointerEvent): void {
    this.handlePointerDown(event);
  }

  public pointerMove(event: PointerEvent): void {
    this.handlePointerMove(event);
  }

  public pointerUp(event: PointerEvent): void {
    this.handlePointerUp(event);
  }
}

function createSlider(side: 'long' | 'short' = 'long', selected = false) {
  const seriesData = [
    { time: 10 as Time, close: 100 },
    { time: 100 as Time, close: 110 },
  ];

  const env = createDrawingTestEnvironment({
    selected,
    seriesData,
  });

  const removeSelf = jest.fn();
  const openSettings = jest.fn();

  const slider = new TestSliderPosition({
    ...env,
    side,
    removeSelf,
    openSettings,
  });

  return {
    ...env,
    slider,
    removeSelf,
    openSettings,
  };
}

function setReady(slider: TestSliderPosition): void {
  slider.setState({
    mode: 'ready',
    startTime: 10 as Time,
    endTime: 100 as Time,
    entryPrice: 100,
    stopPrice: 90,
    targetPrice: 120,
    amount: 1000,
    settings: {
      ...createDefaultSettings(),
      accountSize: 1000,
      risk: 25,
      lotSize: 1,
      leverage: 5,
      quantityPrecision: 3,
    },
  });
}

function createInitialEvent(
  x: number,
  y: number,
  time: Time,
): MouseEventParams<Time> {
  return {
    point: { x, y },
    time,
  } as unknown as MouseEventParams<Time>;
}

describe('SliderPosition', () => {
  it('считает Risk/Reward Ratio', () => {
    const { slider } = createSlider();

    setReady(slider);

    expect(slider.getState().riskRewardRatio).toBe(2);
  });

  it('при риске 25% и RR 1 считает 1000 -> 1250/750', () => {
    const { slider } = createSlider();

    slider.setState({
      mode: 'ready',
      startTime: 10 as Time,
      endTime: 100 as Time,
      entryPrice: 100,
      stopPrice: 90,
      targetPrice: 110,
      settings: {
        ...createDefaultSettings(),
        accountSize: 1000,
        risk: 25,
        lotSize: 1,
        leverage: 5,
        quantityPrecision: 3,
      },
    });

    expect(slider.getRenderData()).toMatchObject({
      targetText: 'Target: 10 (10%), Amount: 1250',
      centerText: 'Open P&L: 10, Qty: 25\nRisk/Reward Ratio: 1',
      stopText: 'Stop: 10 (10%), Amount: 750',
    });
  });

  it('ограничивает Qty через leverage', () => {
    const { slider } = createSlider();

    slider.setState({
      mode: 'ready',
      startTime: 10 as Time,
      endTime: 100 as Time,
      entryPrice: 100,
      stopPrice: 90,
      targetPrice: 110,
      settings: {
        ...createDefaultSettings(),
        accountSize: 1000,
        risk: 25,
        lotSize: 1,
        leverage: 1,
        quantityPrecision: 3,
      },
    });

    expect(slider.getRenderData()).toMatchObject({
      targetText: 'Target: 10 (10%), Amount: 1100',
      centerText: 'Open P&L: 10, Qty: 10\nRisk/Reward Ratio: 1',
      stopText: 'Stop: 10 (10%), Amount: 900',
    });
  });

  it('всегда трактует Risk как процент от размера счёта', () => {
    const { slider } = createSlider();

    slider.setState({
      mode: 'ready',
      startTime: 10 as Time,
      endTime: 100 as Time,
      entryPrice: 100,
      stopPrice: 90,
      targetPrice: 120,
      settings: {
        ...createDefaultSettings(),
        accountSize: 1000,
        risk: 2,
        lotSize: 1,
        leverage: 10,
        quantityPrecision: 3,
      },
    });

    expect(slider.getRenderData()).toMatchObject({
      targetText: 'Target: 20 (20%), Amount: 1040',
      centerText: 'Open P&L: 10, Qty: 2\nRisk/Reward Ratio: 2',
      stopText: 'Stop: 10 (10%), Amount: 980',
    });
  });

  it('учитывает Lot size', () => {
    const { slider } = createSlider();

    slider.setState({
      mode: 'ready',
      startTime: 10 as Time,
      endTime: 100 as Time,
      entryPrice: 100,
      stopPrice: 90,
      targetPrice: 110,
      settings: {
        ...createDefaultSettings(),
        accountSize: 1000,
        risk: 25,
        lotSize: 5,
        leverage: 5,
        quantityPrecision: 3,
      },
    });

    expect(slider.getRenderData()).toMatchObject({
      targetText: 'Target: 10 (10%), Amount: 1250',
      centerText: 'Open P&L: 10, Qty: 5\nRisk/Reward Ratio: 1',
      stopText: 'Stop: 10 (10%), Amount: 750',
    });
  });

  it('QTY precision округляет Qty до расчёта Amount', () => {
    const { slider } = createSlider();

    slider.setState({
      mode: 'ready',
      startTime: 10 as Time,
      endTime: 100 as Time,
      entryPrice: 100,
      stopPrice: 93,
      targetPrice: 114,
      settings: {
        ...createDefaultSettings(),
        accountSize: 1000,
        risk: 10,
        lotSize: 1,
        leverage: 10,
        quantityPrecision: 2,
      },
    });

    expect(slider.getRenderData()).toMatchObject({
      targetText: 'Target: 14 (14%), Amount: 1200.06',
      centerText: 'Open P&L: 10, Qty: 14.29\nRisk/Reward Ratio: 2',
      stopText: 'Stop: 7 (7%), Amount: 899.97',
    });
  });

  it('изменение Target не меняет Qty', () => {
    const { slider } = createSlider();

    setReady(slider);
    expect(slider.getRenderData()?.centerText).toContain('Qty: 25');

    slider.setState({
      targetPrice: 140,
    });

    expect(slider.getRenderData()).toMatchObject({
      targetText: 'Target: 40 (40%), Amount: 2000',
      centerText: 'Open P&L: 10, Qty: 25\nRisk/Reward Ratio: 4',
      stopText: 'Stop: 10 (10%), Amount: 750',
    });
  });

  it('изменение Stop пересчитывает Qty', () => {
    const { slider } = createSlider();

    setReady(slider);

    slider.setState({
      stopPrice: 95,
    });

    expect(slider.getRenderData()).toMatchObject({
      targetText: 'Target: 20 (20%), Amount: 2000',
      centerText: 'Open P&L: 10, Qty: 50\nRisk/Reward Ratio: 4',
      stopText: 'Stop: 5 (5%), Amount: 750',
    });
  });

  it('симметрично считает short позицию', () => {
    const { slider } = createSlider('short');

    slider.setState({
      mode: 'ready',
      startTime: 10 as Time,
      endTime: 100 as Time,
      entryPrice: 100,
      stopPrice: 110,
      targetPrice: 80,
      settings: {
        ...createDefaultSettings(),
        accountSize: 1000,
        risk: 25,
        lotSize: 1,
        leverage: 5,
        quantityPrecision: 3,
      },
    });

    expect(slider.getRenderData()).toMatchObject({
      targetText: 'Target: 20 (20%), Amount: 1500',
      centerText: 'Open P&L: -10, Qty: 25\nRisk/Reward Ratio: 2',
      stopText: 'Stop: 10 (10%), Amount: 750',
      targetLabelDirection: 'down',
      stopLabelDirection: 'up',
    });
  });

  it('разрешает Risk/Reward Ratio = 0', () => {
    const { slider } = createSlider();

    slider.setState({
      mode: 'ready',
      startTime: 10 as Time,
      endTime: 100 as Time,
      entryPrice: 100,
      stopPrice: 90,
      riskRewardRatio: 0,
    });

    expect(slider.getState()).toMatchObject({
      targetPrice: 100,
      riskRewardRatio: 0,
    });

    expect(slider.getRenderData()?.centerText).toContain(
      'Risk/Reward Ratio: 0',
    );
  });

  it('использует минимальный шаг цены для Stop', () => {
    const { slider } = createSlider();

    slider.setState({
      mode: 'ready',
      startTime: 10 as Time,
      endTime: 100 as Time,
      entryPrice: 100,
      stopPrice: 100,
      targetPrice: 100,
    });

    expect(slider.getState()).toMatchObject({
      entryPrice: 100,
      stopPrice: 99.99,
      targetPrice: 100,
      riskRewardRatio: 0,
    });
  });

  it('возвращает четыре handles в правильном порядке', () => {
    const { slider } = createSlider();

    setReady(slider);

    expect(slider.handles()).toEqual([
      {
        id: 'target',
        x: 10,
        y: 120,
      },
      {
        id: 'stop',
        x: 10,
        y: 90,
      },
      {
        id: 'end',
        x: 100,
        y: 100,
      },
      {
        id: 'entry',
        x: 10,
        y: 100,
        shape: 'circle',
      },
    ]);
  });

  it('Entry имеет приоритет при точном совпадении с Target', () => {
    const { slider, container, priceToCoordinate } = createSlider(
      'long',
      true,
    );

    priceToCoordinate.mockImplementation((price: number) => {
      return (price === 101 ? 100 : price) as Coordinate;
    });

    slider.setState({
      mode: 'ready',
      startTime: 10 as Time,
      endTime: 100 as Time,
      entryPrice: 100,
      stopPrice: 90,
      targetPrice: 101,
    });

    slider.pointerDown(createPointerEvent(container, 10, 100));
    slider.pointerMove(createPointerEvent(container, 10, 95));

    expect(slider.getState()).toMatchObject({
      entryPrice: 95,
      targetPrice: 101,
    });
  });

  it('Entry имеет приоритет при точном совпадении со Stop', () => {
    const { slider, container, priceToCoordinate } = createSlider(
      'long',
      true,
    );

    priceToCoordinate.mockImplementation((price: number) => {
      return (price === 99 ? 100 : price) as Coordinate;
    });

    slider.setState({
      mode: 'ready',
      startTime: 10 as Time,
      endTime: 100 as Time,
      entryPrice: 100,
      stopPrice: 99,
      targetPrice: 120,
    });

    slider.pointerDown(createPointerEvent(container, 10, 100));
    slider.pointerMove(createPointerEvent(container, 10, 110));

    expect(slider.getState()).toMatchObject({
      entryPrice: 110,
      stopPrice: 99,
    });
  });

  it('позволяет вытянуть Target из overlap', () => {
    const { slider, container, priceToCoordinate } = createSlider(
      'long',
      true,
    );

    priceToCoordinate.mockImplementation((price: number) => {
      return (price === 101 ? 100 : price) as Coordinate;
    });

    slider.setState({
      mode: 'ready',
      startTime: 10 as Time,
      endTime: 100 as Time,
      entryPrice: 100,
      stopPrice: 90,
      targetPrice: 101,
    });

    slider.pointerDown(createPointerEvent(container, 10, 101));
    slider.pointerMove(createPointerEvent(container, 10, 110));

    expect(slider.getState().targetPrice).toBe(110);
  });

  it('позволяет вытянуть Stop из overlap', () => {
    const { slider, container, priceToCoordinate } = createSlider(
      'long',
      true,
    );

    priceToCoordinate.mockImplementation((price: number) => {
      return (price === 99 ? 100 : price) as Coordinate;
    });

    slider.setState({
      mode: 'ready',
      startTime: 10 as Time,
      endTime: 100 as Time,
      entryPrice: 100,
      stopPrice: 99,
      targetPrice: 120,
    });

    slider.pointerDown(createPointerEvent(container, 10, 99));
    slider.pointerMove(createPointerEvent(container, 10, 90));

    expect(slider.getState().stopPrice).toBe(90);
  });

  it('Entry не пересекает Stop и Target', () => {
    const { slider, container } = createSlider('long', true);

    setReady(slider);

    slider.pointerDown(createPointerEvent(container, 10, 100));
    slider.pointerMove(createPointerEvent(container, 10, 200));

    expect(slider.getState().entryPrice).toBe(120);
  });

  it('оставляет минимальный шаг между Stop и Entry', () => {
    const { slider, container } = createSlider('long', true);

    setReady(slider);

    slider.pointerDown(createPointerEvent(container, 10, 90));
    slider.pointerMove(createPointerEvent(container, 10, 100));

    expect(slider.getState().stopPrice).toBe(99.99);
  });

  it('Target может совпасть с Entry', () => {
    const { slider, container } = createSlider('long', true);

    setReady(slider);

    slider.pointerDown(createPointerEvent(container, 10, 120));
    slider.pointerMove(createPointerEvent(container, 10, 100));

    expect(slider.getState().targetPrice).toBe(100);
  });

  it('для short оставляет минимальный шаг между Stop и Entry', () => {
    const { slider, container } = createSlider('short', true);

    slider.setState({
      mode: 'ready',
      startTime: 10 as Time,
      endTime: 100 as Time,
      entryPrice: 100,
      stopPrice: 110,
      targetPrice: 80,
    });

    slider.pointerDown(createPointerEvent(container, 10, 110));
    slider.pointerMove(createPointerEvent(container, 10, 100));

    expect(slider.getState().stopPrice).toBe(100.01);
  });

  it.each(['long', 'short'] as const)(
    'создаёт %s позицию с ограниченной начальной высотой',
    (side) => {
      const seriesData = [
        {
          time: 150 as Time,
          close: 150,
        },
      ];

      const env = createDrawingTestEnvironment({
        seriesData,
        height: 300,
      });

      const slider = new TestSliderPosition({
        ...env,
        side,
        initialEvent: createInitialEvent(100, 150, 150 as Time),
      });

      const priceHandles = slider.handles().filter(({ id }) => {
        return id === 'target' || id === 'stop';
      });

      expect(slider.getState().mode).toBe('ready');
      expect(priceHandles).toHaveLength(2);
      expect(
        priceHandles.every(({ y }) => Math.abs(y - 150) <= 60),
      ).toBe(true);
    },
  );

  it.each([
    ['long', 20],
    ['long', 280],
    ['short', 20],
    ['short', 280],
  ] as const)(
    'не выводит handles %s позиции за pane при y=%s',
    (side, entryY) => {
      const seriesData = [
        {
          time: entryY as Time,
          close: entryY,
        },
      ];

      const env = createDrawingTestEnvironment({
        seriesData,
        height: 300,
      });

      const slider = new TestSliderPosition({
        ...env,
        side,
        initialEvent: createInitialEvent(100, entryY, entryY as Time),
      });

      const priceHandles = slider.handles().filter(({ id }) => {
        return id === 'target' || id === 'stop';
      });

      expect(slider.getState().mode).toBe('ready');
      expect(priceHandles.every(({ y }) => y >= 8 && y <= 292)).toBe(true);
    },
  );

  it('возвращает selected axis areas', () => {
    const { slider } = createSlider('long', true);

    setReady(slider);

    expect(slider.timeSegments()).toEqual([
      {
        from: 10,
        to: 100,
        color: '#2962ff44',
      },
    ]);

    expect(slider.priceSegments()).toEqual([
      {
        from: 100,
        to: 120,
        color: '#2962ff44',
      },
      {
        from: 90,
        to: 100,
        color: '#2962ff44',
      },
    ]);
  });

  it('price labels доступны независимо от selection', () => {
    const { slider } = createSlider();

    setReady(slider);

    expect(slider.priceLabel('target')).toMatchObject({
      coordinate: 120,
      text: '120',
      backgroundColor: '#00aa00',
    });

    expect(slider.priceLabel('entry')).toMatchObject({
      coordinate: 100,
      backgroundColor: '#777777',
    });

    expect(slider.priceLabel('stop')).toMatchObject({
      coordinate: 90,
      backgroundColor: '#aa0000',
    });
  });

  it('возвращает правильные cursors', () => {
    const { slider } = createSlider('long', true);

    setReady(slider);

    expect(slider.hovered(10, 120)?.cursorStyle).toBe('ns-resize');
    expect(slider.hovered(10, 90)?.cursorStyle).toBe('ns-resize');
    expect(slider.hovered(100, 100)?.cursorStyle).toBe('ew-resize');
    expect(slider.hovered(10, 100)?.cursorStyle).toBe('grab');
  });

  it('выбирает unselected slider по body', () => {
    const { slider, interaction, container } = createSlider();

    setReady(slider);

    slider.pointerDown(createPointerEvent(container, 50, 100));

    expect(interaction.select).toHaveBeenCalledTimes(1);
  });

  it('изменяет end time', () => {
    const { slider, container } = createSlider('long', true);

    setReady(slider);

    slider.pointerDown(createPointerEvent(container, 100, 100));
    slider.pointerMove(createPointerEvent(container, 150, 100));

    expect(slider.getState().endTime).toBe(150);
  });
});

describe('SliderPaneRenderer', () => {
  it('не рисует без data', () => {
    const { target, useBitmapCoordinateSpace } = createCanvasTarget();

    new SliderPaneRenderer({
      getRenderData: () => null,
    } as unknown as SliderPosition).draw(target);

    expect(useBitmapCoordinateSpace).not.toHaveBeenCalled();
  });

  it('рисует profit/loss и labels', () => {
    const data: SliderRenderData = {
      startX: 10,
      endX: 100,
      leftX: 10,
      rightX: 100,
      entryY: 100,
      stopY: 120,
      targetY: 80,
      entryPrice: 100,
      stopPrice: 90,
      targetPrice: 120,
      profitTop: 80,
      profitBottom: 100,
      lossTop: 100,
      lossBottom: 120,
      targetText: 'target',
      centerText: 'center',
      stopText: 'stop',
      centerBoxColor: '#0a0',
      targetLabelDirection: 'up',
      stopLabelDirection: 'down',
      showLabels: true,
      lineColor: '#fff',
      lineWidth: 1,
      positiveFillColor: '#0f03',
      negativeFillColor: '#f003',
      textColor: '#fff',
      fontSize: 10,
    };

    const { target, context } = createCanvasTarget();

    new SliderPaneRenderer({
      getRenderData: () => data,
    } as unknown as SliderPosition).draw(target);

    expect(context.fillRect).toHaveBeenCalledTimes(2);
    expect(context.fillText).toHaveBeenCalled();
    expect(context.stroke).toHaveBeenCalledTimes(3);
  });
});

describe('SliderPaneView', () => {
  it('возвращает renderer и top', () => {
    const view = new SliderPaneView({} as SliderPosition);

    expect(view.renderer()).toBeInstanceOf(SliderPaneRenderer);
    expect(view.zOrder()).toBe('top');
  });
});

describe('SliderPosition settings', () => {
  it('создаёт defaults', () => {
    expect(createDefaultSettings()).toEqual({
      accountSize: 1000,
      risk: 25,
      lotSize: 1,
      leverage: 10000,
      quantityPrecision: 3,
      lineColor: '#999999',
      lineWidth: 1,
      positiveFillColor: '#00aa0044',
      negativeFillColor: '#aa000044',
      textColor: '#ffffff',
      fontSize: 10,
    });
  });

  it('создаёт только Arguments и Style tabs', () => {
    const tabs = getSliderPositionSettingsTabs(createDefaultSettings(), {
      entryPrice: 100,
      targetPrice: 120,
      stopPrice: 90,
    });

    expect(tabs.map(({ key }) => key)).toEqual(['inputs', 'style']);
  });

  it('обновляет Entry, Target и Stop через настройки', () => {
    const { slider } = createSlider();

    setReady(slider);

    slider.updateSettings({
      entryPrice: 105,
      targetPrice: 110,
      stopPrice: 102,
    });

    expect(slider.getState()).toMatchObject({
      entryPrice: 105,
      targetPrice: 110,
      stopPrice: 102,
    });
  });
});