node-twstock/lib/scrapers/mis-twse-scraper.js

A client library for scraping Taiwan stock market data

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.MisTwseScraper = void 0;
const numeral = require("numeral");
const luxon_1 = require("luxon");
const scraper_1 = require("./scraper");
const utils_1 = require("../utils");
class MisTwseScraper extends scraper_1.Scraper {
    async fetchListedIndices(options) {
        const { exchange } = options;
        const ex = { 'TWSE': 'tse', 'TPEx': 'otc' };
        const i = { 'TWSE': 'TIDX', 'TPEx': 'OIDX' };
        const query = new URLSearchParams({
            ex: ex[exchange],
            i: i[exchange],
        });
        const url = `https://mis.twse.com.tw/stock/api/getCategory.jsp?${query}`;
        const response = await this.httpService.get(url);
        const json = (response.data.rtmessage === 'OK') && response.data;
        if (!json)
            return null;
        const data = json.msgArray.map((row) => {
            var _a;
            return ({
                symbol: (_a = (0, utils_1.asIndex)(row.n)) !== null && _a !== void 0 ? _a : (row.ch).replace('.tw', ''),
                name: row.n,
                exchange,
                ex_ch: `${row.ex}_${row.ch}`,
            });
        });
        return data;
    }
    async fetchStocksQuote(options) {
        const { ticker, odd } = options;
        const query = new URLSearchParams({
            ex_ch: this.extractExChFromTicker(ticker),
        });
        const url = odd
            ? `https://mis.twse.com.tw/stock/api/getOddInfo.jsp?${query}`
            : `https://mis.twse.com.tw/stock/api/getStockInfo.jsp?${query}`;
        const response = await this.httpService.get(url);
        const json = (response.data.rtmessage === 'OK') && response.data;
        if (!json)
            return null;
        const data = json.msgArray.map((row) => ({
            date: luxon_1.DateTime.fromFormat(row.d, 'yyyyMMdd').toISODate(),
            symbol: row.c,
            name: row.n,
            referencePrice: row.y && numeral(row.y).value(),
            limitUpPrice: row.u && numeral(row.u).value(),
            limitDownPrice: row.w && numeral(row.w).value(),
            openPrice: row.o && numeral(row.o).value(),
            highPrice: row.h && numeral(row.h).value(),
            lowPrice: row.l && numeral(row.l).value(),
            lastPrice: row.z && numeral(row.z).value(),
            lastSize: row.s && numeral(row.s).value(),
            totalVoluem: row.v && numeral(row.v).value(),
            bidPrice: row.b && row.b.split('_').slice(0, -1).map((price) => numeral(price).value()),
            askPrice: row.a && row.a.split('_').slice(0, -1).map((price) => numeral(price).value()),
            bidSize: row.g && row.g.split('_').slice(0, -1).map((size) => numeral(size).value()),
            askSize: row.f && row.f.split('_').slice(0, -1).map((size) => numeral(size).value()),
            lastUpdated: row.tlong && numeral(row.tlong).value(),
        }));
        return data.find(row => row.symbol === ticker.symbol);
    }
    async fetchIndicesQuote(options) {
        const { ticker } = options;
        const query = new URLSearchParams({
            ex_ch: this.extractExChFromTicker(ticker),
        });
        const url = `https://mis.twse.com.tw/stock/api/getStockInfo.jsp?${query}`;
        const response = await this.httpService.get(url);
        const json = (response.data.rtmessage === 'OK') && response.data;
        if (!json)
            return null;
        const data = json.msgArray.map((row) => ({
            date: luxon_1.DateTime.fromFormat(row.d, 'yyyyMMdd').toISODate(),
            symbol: ticker.symbol,
            name: row.n,
            previousClose: row.y && numeral(row.y).value(),
            open: row.o && numeral(row.o).value(),
            high: row.h && numeral(row.h).value(),
            low: row.l && numeral(row.l).value(),
            close: row.z && numeral(row.z).value(),
            volume: row.v && numeral(row.v).value(),
            lastUpdated: row.tlong && numeral(row.tlong).value(),
        }));
        return data.find(row => row.symbol === ticker.symbol);
    }
    extractExChFromTicker(ticker) {
        const { symbol, exchange, ex_ch } = ticker;
        const ex = { 'TWSE': 'tse', 'TPEx': 'otc' };
        const ch = `${symbol}.tw`;
        return ex_ch ? ex_ch : `${ex[exchange]}_${ch}`;
    }
}
exports.MisTwseScraper = MisTwseScraper;