import { Injectable } from '@nestjs/common';
import { MoexHttpClient } from './moex-http.client';
import { MoexHistoryEntry, MoexBondHistoryEntry } from './moex-client.types';

@Injectable()
export class MoexHistoryClient {
  constructor(private readonly http: MoexHttpClient) {}

  async getHistory(secid: string, from: string, till: string): Promise<MoexHistoryEntry[]> {
    const data = await this.http.request<Record<string, unknown>>(
      `/engines/stock/markets/shares/securities/${secid}`,
      { from, till },
    );
    const tableName = Object.keys(data).find(
      (k) => k.startsWith('history') && !k.includes('cursor'),
    );
    if (!tableName) return [];
    return this.http.extractTable(data, tableName).map((h) => ({
      tradeDate: h.TRADEDATE as string,
      open: h.OPEN != null ? parseFloat(h.OPEN as string) : null,
      low: h.LOW != null ? parseFloat(h.LOW as string) : null,
      high: h.HIGH != null ? parseFloat(h.HIGH as string) : null,
      close: h.CLOSE != null ? parseFloat(h.CLOSE as string) : null,
      waprice: h.WAPRICE != null ? parseFloat(h.WAPRICE as string) : null,
      volume: parseInt((h.VOLUME as string) || '0', 10),
      value: parseFloat((h.VALUE as string) || '0'),
      numtrades: parseInt((h.NUMTRADES as string) || '0', 10),
    }));
  }

  async getBondHistory(secid: string, from: string, till: string): Promise<MoexBondHistoryEntry[]> {
    const data = await this.http.request<Record<string, unknown>>(
      `/engines/stock/markets/bonds/securities/${secid}`,
      { from, till },
    );
    const tableName = Object.keys(data).find(
      (k) => k.startsWith('history') && !k.includes('cursor'),
    );
    if (!tableName) return [];
    return this.http.extractTable(data, tableName).map((h) => ({
      tradeDate: h.TRADEDATE as string,
      close: h.CLOSE != null ? parseFloat(h.CLOSE as string) : null,
      legalClosePrice: h.LEGALCLOSEPRICE != null ? parseFloat(h.LEGALCLOSEPRICE as string) : null,
      waprice: h.WAPRICE != null ? parseFloat(h.WAPRICE as string) : null,
      yieldClose: h.YIELDCLOSE != null ? parseFloat(h.YIELDCLOSE as string) : null,
      duration: h.DURATION != null ? parseFloat(h.DURATION as string) : null,
      accruedInt: h.ACCINT != null ? parseFloat(h.ACCINT as string) : null,
    }));
  }
}