hk-bus-eta/dist/sunferry.js

Query the ETA (Estimated Time of Arrival) of HK Bus/Minibus/MTR/Lightrail

"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
Object.defineProperty(exports, "__esModule", { value: true });
const tz_1 = require("@date-fns/tz");
const date_fns_1 = require("date-fns");
const utils_1 = require("./utils");
function fetchEtas({ route, seq, freq, holidays, serviceDayMap, }) {
    return __awaiter(this, void 0, void 0, function* () {
        if (seq > 1) {
            return Promise.resolve([]);
        }
        const apiEtas = yield fetch(`https://www.sunferry.com.hk/eta/?route=${route}`, {
            cache: utils_1.isSafari ? "default" : "no-store",
        })
            .then((response) => response.json())
            .then(({ data, generated_timestamp, }) => {
            if (!data)
                return [];
            return data.map(({ depart_time, eta, rmk_en, rmk_tc, route_tc, route_en }) => {
                var _a, _b;
                /**
                 * @param timeString HH:mm
                 */
                const guessDateTimeByTimeString = (timeString) => {
                    const generated = new tz_1.TZDate(generated_timestamp, "Asia/Hong_Kong");
                    const time = (0, date_fns_1.startOfMinute)((0, date_fns_1.set)(generated, {
                        hours: parseInt(timeString.split(":")[0], 10),
                        minutes: parseInt(timeString.split(":")[1], 10),
                    }));
                    return (0, date_fns_1.closestTo)(generated, [
                        (0, date_fns_1.sub)(time, { days: 1 }),
                        time,
                        (0, date_fns_1.add)(time, { days: 1 }),
                    ]);
                };
                // 橫水渡 - (坪洲-梅窩)
                // 中環 - 長洲
                const [originZh, destZh] = (((_a = /^橫水渡 - \((.*)\)$/.exec(route_tc)) === null || _a === void 0 ? void 0 : _a[1]) || route_tc)
                    .split("-")
                    .map((s) => s.trim());
                // Inter Islands (Peng Chau - Mui Wo)
                // Central - Cheung Chau
                const [originEn, destEn] = (((_b = /^Inter Islands \((.*)\)$/.exec(route_en)) === null || _b === void 0 ? void 0 : _b[1]) || route_en)
                    .split("-")
                    .map((s) => s.trim());
                return {
                    departTime: (0, date_fns_1.formatISO)(guessDateTimeByTimeString(depart_time)),
                    eta: eta ? (0, date_fns_1.formatISO)(guessDateTimeByTimeString(eta)) : null,
                    remark: {
                        zh: rmk_tc !== null && rmk_tc !== void 0 ? rmk_tc : "",
                        en: rmk_en !== null && rmk_en !== void 0 ? rmk_en : "",
                    },
                    dest: {
                        zh: destZh,
                        en: destEn,
                    },
                    co: "sunferry",
                };
            });
        })
            .catch((err) => {
            console.error("Error fetching Sun Ferry ETAs:", err);
            return [];
        });
        if (seq === 0) {
            const greatestApiEtaTime = apiEtas.length > 0
                ? (0, date_fns_1.max)(apiEtas.map((e) => new Date(e.departTime)))
                : undefined;
            const now = new Date();
            return [
                ...apiEtas
                    .filter((eta) => (0, date_fns_1.endOfMinute)(new Date(eta.departTime)) >= now && !eta.eta)
                    .map((eta) => ({
                    eta: eta.departTime,
                    remark: {
                        zh: [eta.remark.zh, "預定班次"].filter(Boolean).join("；"),
                        en: [eta.remark.en, "Scheduled"].filter(Boolean).join("; "),
                    },
                    dest: eta.dest,
                    co: eta.co,
                })),
                ...(0, utils_1.getUpcomingFerry)({
                    holidays,
                    serviceDayMap,
                    freq,
                    date: (0, date_fns_1.max)([
                        ...(greatestApiEtaTime
                            ? [(0, date_fns_1.add)(greatestApiEtaTime, { minutes: 1 })]
                            : []),
                        now,
                    ]),
                })
                    .filter((v) => new Date(v).getTime() - now.getTime() < 180 * 60 * 1000)
                    .map((eta) => ({
                    eta: eta,
                    remark: {
                        zh: "預定班次",
                        en: "Scheduled",
                    },
                    dest: {
                        zh: "",
                        en: "",
                    },
                    co: "sunferry",
                })),
            ];
        }
        else if (seq === 1) {
            return apiEtas
                .filter((eta) => eta.eta !== null)
                .map((eta) => ({
                eta: eta.eta,
                remark: {
                    zh: eta.remark.zh,
                    en: eta.remark.en,
                },
                dest: eta.dest,
                co: eta.co,
            }));
        }
        else {
            return [];
        }
    });
}
exports.default = fetchEtas;
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