---

import type { PriceScaleMode } from 'lightweight-charts';

export enum SeasonalityViewType {
  Chart = 'chart',
  Table = 'table',
}

export type SeasonalityScale = PriceScaleMode.Normal | PriceScaleMode.Percentage;

export interface SeasonalityRange {
  fromYear: number;
  toYear: number;
}

export interface SeasonalityState extends SeasonalityRange {
  displayMode: SeasonalityViewType;
  status: 'idle' | 'loading' | 'ready' | 'empty' | 'error';
  scale: SeasonalityScale;
  showAverage: boolean;
  symbolId: string;
  minYear: number;
  maxYear: number;
  error: string | null;
  tableRows: SeasonalityTableRow[];
}

export interface SeasonalityPoint {
  date: string;
  chartDate: string;
  price: number;
  percentage: number | null;
}

export interface SeasonalityYear {
  year: number;
  baselineDate: string;
  baselinePrice: number;
  points: SeasonalityPoint[];
}

export interface DailyClose {
  date: string;
  close: number;
}

export interface SeasonalityChange {
  absolute: number;
  percentage: number | null;
}

export interface SeasonalityTableRow {
  year: number;
  months: (SeasonalityChange | null)[];
  total: SeasonalityChange | null;
}


















import { PriceScaleMode } from 'lightweight-charts';

import { SeasonalityViewType } from '@src/types';

import type { SeasonalityState } from '@src/types';

export const DEFAULT_SEASONALITY_YEARS = 5;

export function createInitialSeasonalityState(): SeasonalityState {
  const year = new Date().getUTCFullYear();
  const fromYear = year - DEFAULT_SEASONALITY_YEARS + 1;

  return {
    displayMode: SeasonalityViewType.Chart,
    status: 'idle',
    scale: PriceScaleMode.Normal,
    showAverage: false,
    symbolId: '',
    error: null,
    minYear: fromYear,
    maxYear: year,
    fromYear,
    toYear: year,
    tableRows: [],
  };
}