Class ChartStudy

src/chart/study.js:148–435

 * @param {import('./session').ChartSessionBridge} chartSession
 */
module.exports = (chartSession) => class ChartStudy {
  #studID = genSessionID('st');

  #studyListeners = chartSession.studyListeners;

  /**
   * Table of periods values indexed by timestamp
   * @type {Object<number, {}[]>}
   */
  #periods = {};

  /** @return {{}[]} List of periods values */
  get periods() {
    return Object.values(this.#periods).sort((a, b) => b.$time - a.$time);
  }

  /**
   * List of graphic xPos indexes
   * @type {number[]}
   */
  #indexes = [];

  /**
   * Table of graphic drawings indexed by type and ID
   * @type {Object<string, Object<number, {}>>}
   */
  #graphic = {};

  /**
   * Table of graphic drawings indexed by type
   * @return {import('./graphicParser').GraphicData}
   */
  get graphic() {
    const translator = {};

    Object.keys(chartSession.indexes)
      .sort((a, b) => chartSession.indexes[b] - chartSession.indexes[a])
      .forEach((r, n) => { translator[r] = n; });

    const indexes = this.#indexes.map((i) => translator[i]);
    return graphicParser(this.#graphic, indexes);
  }

  /** @type {StrategyReport} */
  #strategyReport = {
    trades: [],
    history: {},
    performance: {},
  };

  /** @return {StrategyReport} Get the strategy report if available */
  get strategyReport() {
    return this.#strategyReport;
  }

  #callbacks = {
    studyCompleted: [],
    update: [],