import { Injectable } from '@nestjs/common';
import { MoexHttpClient } from './moex-http.client';
import {
  MoexShareMarketData,
  MoexBondData,
  MoexBondMarketData,
  MoexBondPositionData,
} from './moex-client.types';

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

  async getShareMarketData(secid: string, boardId = 'TQBR'): Promise<MoexShareMarketData | null> {
    const data = await this.http.request<Record<string, unknown>>(
      `/engines/stock/markets/shares/securities/${secid}`,
      { boards: boardId },
    );
    const rows = this.http.extractTable(data, 'securities');
    const share = rows.find((r) => r.BOARDID === boardId);
    if (!share) return null;

    const mktRows = this.http.extractTable(data, 'marketdata');
    const mkt = mktRows.find((r) => r.BOARDID === boardId);

    return {
      secid,
      boardid: boardId,
      shortName: (share?.SHORTNAME as string) || '',
      bid: mkt ? parseFloat((mkt.BID as string) || '') : null,
      offer: mkt ? parseFloat((mkt.OFFER as string) || '') : null,
      open: mkt ? parseFloat((mkt.OPEN as string) || '') : null,
      low: mkt ? parseFloat((mkt.LOW as string) || '') : null,
      high: mkt ? parseFloat((mkt.HIGH as string) || '') : null,
      last: mkt
        ? parseFloat((mkt.LAST as string) || '')
        : parseFloat((share.PREVPRICE as string) || ''),
      lastChange: mkt ? parseFloat((mkt.LASTCHANGE as string) || '') : null,
      lastChangePrcnt: mkt ? parseFloat((mkt.LASTCHANGEPRCNT as string) || '') : null,
      volume: mkt ? parseInt((mkt.VOLTODAY as string) || '0', 10) : 0,
      value: mkt ? parseFloat((mkt.VALTODAY as string) || '0') : 0,
      waprice: mkt ? parseFloat((mkt.WAPRICE as string) || '') : null,
      numtrades: mkt ? parseInt((mkt.NUMTRADES as string) || '0', 10) : 0,
      issueCapitalization: mkt ? parseFloat((mkt.ISSUECAPITALIZATION as string) || '') : null,
      tradingStatus: (mkt?.TRADINGSTATUS as string) || '',
      updateTime: (mkt?.UPDATETIME as string) || '',
    };
  }

  async getShareMarketDataBatch(
    secids: string[],
    boardId = 'TQBR',
  ): Promise<MoexShareMarketData[]> {
    const params: Record<string, string> = { boards: boardId };
    if (secids.length > 0) {
      params.securities = secids.join(',');
    }
    const data = await this.http.request<Record<string, unknown>>(
      `/engines/stock/markets/shares/securities`,
      params,
    );
    const securities = this.http.extractTable(data, 'securities');
    const marketdata = this.http.extractTable(data, 'marketdata');

    const secidSet = secids.length > 0 ? new Set(secids) : null;
    const filteredSecurities = secidSet
      ? securities.filter((r) => secidSet.has(r.SECID as string))
      : securities;

    return filteredSecurities.map((sec) => {
      const secid = sec.SECID as string;
      const mkt =
        marketdata.find((r) => r.SECID === secid && r.BOARDID === boardId) ||
        marketdata.find((r) => r.SECID === secid);

      return {
        secid,
        boardid: boardId,
        shortName: (sec?.SHORTNAME as string) || '',
        bid: mkt ? parseFloat((mkt.BID as string) || '') : null,
        offer: mkt ? parseFloat((mkt.OFFER as string) || '') : null,
        open: mkt ? parseFloat((mkt.OPEN as string) || '') : null,
        low: mkt ? parseFloat((mkt.LOW as string) || '') : null,
        high: mkt ? parseFloat((mkt.HIGH as string) || '') : null,
        last: mkt
          ? parseFloat((mkt.LAST as string) || '')
          : parseFloat((sec?.PREVPRICE as string) || ''),
        lastChange: mkt ? parseFloat((mkt.LASTCHANGE as string) || '') : null,
        lastChangePrcnt: mkt ? parseFloat((mkt.LASTCHANGEPRCNT as string) || '') : null,
        volume: mkt ? parseInt((mkt.VOLTODAY as string) || '0', 10) : 0,
        value: mkt ? parseFloat((mkt.VALTODAY as string) || '0') : 0,
        waprice: mkt ? parseFloat((mkt.WAPRICE as string) || '') : null,
        numtrades: mkt ? parseInt((mkt.NUMTRADES as string) || '0', 10) : 0,
        issueCapitalization: mkt ? parseFloat((mkt.ISSUECAPITALIZATION as string) || '') : null,
        tradingStatus: (mkt?.TRADINGSTATUS as string) || '',
        updateTime: (mkt?.UPDATETIME as string) || '',
      };
    });
  }

  async getBondData(secid: string, boardId = 'TQCB'): Promise<MoexBondData | null> {
    const data = await this.http.request<Record<string, unknown>>(
      `/engines/stock/markets/bonds/securities/${secid}`,
      { boards: boardId },
    );
    const rows = this.http.extractTable(data, 'securities');
    const bond =
      rows.find((r) => r.BOARDID === boardId && r.PREVWAPRICE != null) ||
      rows.find((r) => r.PREVWAPRICE != null) ||
      rows[0];
    if (!bond) return null;

    return {
      secid,
      boardid: boardId,
      shortName: (bond.SHORTNAME as string) || '',
      prevWaprice: parseFloat((bond.PREVWAPRICE as string) || '') || null,
      yieldAtPrevWaprice: parseFloat((bond.YIELDATPREVWAPRICE as string) || '') || null,
      couponValue: bond.COUPONVALUE != null ? parseFloat(bond.COUPONVALUE as string) : null,
      nextCoupon: (bond.NEXTCOUPON as string) || null,
      accruedInt: bond.ACCRUEDINT != null ? parseFloat(bond.ACCRUEDINT as string) : null,
      prevPrice: parseFloat((bond.PREVPRICE as string) || '') || null,
      lotSize: parseInt((bond.LOTSIZE as string) || '1', 10),
      faceValue: parseFloat((bond.FACEVALUE as string) || '1000'),
      matDate: (bond.MATDATE as string) || '',
      couponPeriod: parseInt((bond.COUPONPERIOD as string) || '0', 10),
      issueSize: parseInt((bond.ISSUESIZE as string) || '0', 10),
      isin: (bond.ISIN as string) || '',
      couponPercent: bond.COUPONPERCENT != null ? parseFloat(bond.COUPONPERCENT as string) : null,
      offerDate: (bond.OFFERDATE as string) || null,
      buybackDate: (bond.BUYBACKDATE as string) || null,
      bondType: (bond.BONDTYPE as string) || '',
      bondSubType: (bond.BONDSUBTYPE as string) || '',
      listLevel: parseInt((bond.LISTLEVEL as string) || '0', 10),
    };
  }

  async getBondMarketData(secid: string, boardId = 'TQCB'): Promise<MoexBondMarketData | null> {
    const data = await this.http.request<Record<string, unknown>>(
      `/engines/stock/markets/bonds/securities/${secid}`,
      { boards: boardId },
    );
    const mktRows = this.http.extractTable(data, 'marketdata');
    const mkt =
      mktRows.find((r) => r.BOARDID === boardId && r.LAST != null) ||
      mktRows.find((r) => r.LAST != null) ||
      mktRows.find((r) => r.SECID === secid);
    if (!mkt) return null;

    return {
      secid,
      bid: mkt.BID != null ? parseFloat(mkt.BID as string) : null,
      offer: mkt.OFFER != null ? parseFloat(mkt.OFFER as string) : null,
      open: mkt.OPEN != null ? parseFloat(mkt.OPEN as string) : null,
      low: mkt.LOW != null ? parseFloat(mkt.LOW as string) : null,
      high: mkt.HIGH != null ? parseFloat(mkt.HIGH as string) : null,
      last: mkt.LAST != null ? parseFloat(mkt.LAST as string) : null,
      yield: mkt.YIELD != null ? parseFloat(mkt.YIELD as string) : null,
      waprice: mkt.WAPRICE != null ? parseFloat(mkt.WAPRICE as string) : null,
      yieldAtWaprice: mkt.YIELDATWAPRICE != null ? parseFloat(mkt.YIELDATWAPRICE as string) : null,
      duration: mkt.DURATION != null ? parseFloat(mkt.DURATION as string) : null,
      volume: parseInt((mkt.VOLTODAY as string) || '0', 10),
      value: parseFloat((mkt.VALTODAY as string) || '0'),
      numtrades: parseInt((mkt.NUMTRADES as string) || '0', 10),
      tradingStatus: (mkt.TRADINGSTATUS as string) || '',
      updateTime: (mkt.UPDATETIME as string) || '',
    };
  }

  async getBondPositionDataBatch(
    secids: string[],
    boardId = 'TQCB',
  ): Promise<MoexBondPositionData[]> {
    const params: Record<string, string> = { boards: boardId };
    if (secids.length > 0) {
      params.securities = secids.join(',');
    }
    const data = await this.http.request<Record<string, unknown>>(
      `/engines/stock/markets/bonds/securities`,
      params,
    );
    const securities = this.http.extractTable(data, 'securities');
    const marketdata = this.http.extractTable(data, 'marketdata');

    const secidSet = secids.length > 0 ? new Set(secids) : null;
    const filteredSecurities = secidSet
      ? securities.filter((r) => secidSet.has(r.SECID as string))
      : securities;

    return filteredSecurities.map((bond) => {
      const secid = bond.SECID as string;
      const mkt =
        marketdata.find((r) => r.SECID === secid && r.BOARDID === boardId && r.LAST != null) ||
        marketdata.find((r) => r.SECID === secid && r.LAST != null) ||
        marketdata.find((r) => r.SECID === secid);

      return {
        secid,
        boardid: (bond.BOARDID as string) || boardId,
        shortName: (bond?.SHORTNAME as string) || '',
        price: mkt?.LAST != null ? parseFloat(mkt.LAST as string) : null,
        yieldToMaturity: mkt?.YIELD != null ? parseFloat(mkt.YIELD as string) : null,
        duration: mkt?.DURATION != null ? parseFloat(mkt.DURATION as string) : null,
        couponValue: bond?.COUPONVALUE != null ? parseFloat(bond.COUPONVALUE as string) : null,
        couponPercent:
          bond?.COUPONPERCENT != null ? parseFloat(bond.COUPONPERCENT as string) : null,
        nextCouponDate: (bond?.NEXTCOUPON as string) || null,
        matDate: (bond?.MATDATE as string) || null,
        accruedInt: bond?.ACCRUEDINT != null ? parseFloat(bond.ACCRUEDINT as string) : null,
        faceValue: parseFloat((bond?.FACEVALUE as string) || '1000'),
        bid: mkt?.BID != null ? parseFloat(mkt.BID as string) : null,
        offer: mkt?.OFFER != null ? parseFloat(mkt.OFFER as string) : null,
        couponPeriod: parseInt((bond?.COUPONPERIOD as string) || '0', 10),
        bondType: (bond?.BONDTYPE as string) || null,
        offerDate: (bond?.OFFERDATE as string) || null,
      };
    });
  }
}