"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 });
exports.sendTimeline = exports.sendTweet = exports.ScreenNameNormalizer = exports.linkBuilder = exports.parseLink = void 0;
const fs = require("fs");
const path = require("path");
const Twitter = require("twitter-api-v2");
const loggers_1 = require("./loggers");
const redis_1 = require("./redis");
const utils_1 = require("./utils");
const webshot_1 = require("./webshot");
const parseLink = (link) => {
    let match = /twitter.com\/([^\/?#]+)\/lists\/([^\/?#]+)/.exec(link) ||
        /^([^\/?#]+)\/([^\/?#]+)$/.exec(link);
    if (match)
        return [match[1], `/lists/${match[2]}`];
    match =
        /twitter.com\/([^\/?#]+)\/status\/(\d+)/.exec(link);
    if (match)
        return [match[1], `/status/${match[2]}`];
    match =
        /twitter.com\/([^\/?#]+)/.exec(link) ||
            /^([^\/?#]+)$/.exec(link);
    if (match)
        return [match[1]];
    return;
};
exports.parseLink = parseLink;
const linkBuilder = (userName, more = '') => {
    if (!userName)
        return;
    return `https://twitter.com/${userName}${more}`;
};
exports.linkBuilder = linkBuilder;
class ScreenNameNormalizer {
    static normalizeLive(username) {
        return __awaiter(this, void 0, void 0, function* () {
            if (this._queryUser) {
                return yield this._queryUser(username)
                    .then(userNameId => userNameId.split(':')[0])
                    .catch((err) => {
                    if (err.title === 'Not Found Error') {
                        logger.warn(`error looking up user: ${showApiError(err)}`);
                        return username;
                    }
                    return null;
                });
            }
            return this.normalize(username);
        });
    }
}
exports.ScreenNameNormalizer = ScreenNameNormalizer;
ScreenNameNormalizer.normalize = (username) => username.toLowerCase().replace(/^@/, '');
let sendTweet = (id, receiver, forceRefresh) => {
    throw Error();
};
exports.sendTweet = sendTweet;
let sendTimeline = (conf, receiver) => {
    throw Error();
};
exports.sendTimeline = sendTimeline;
const TWITTER_EPOCH = 1288834974657;
const snowflake = (epoch) => Number.isNaN(epoch) ? undefined :
    utils_1.BigNumOps.lShift(String(epoch - 1 - TWITTER_EPOCH), 22);
const logger = (0, loggers_1.getLogger)('twitter');
const maxTrials = 3;
const retryInterval = 1500;
const ordinal = (n) => {
    switch ((Math.trunc(n / 10) % 10 === 1) ? 0 : n % 10) {
        case 1:
            return `${n}st`;
        case 2:
            return `${n}nd`;
        case 3:
            return `${n}rd`;
        default:
            return `${n}th`;
    }
};
const retryOnError = (doWork, onRetry) => new Promise(resolve => {
    const retry = (reason, count) => {
        setTimeout(() => {
            let terminate = false;
            onRetry(reason, count, defaultValue => { terminate = true; resolve(defaultValue); });
            if (!terminate)
                doWork().then(resolve).catch(error => retry(error, count + 1));
        }, retryInterval);
    };
    doWork().then(resolve).catch(error => retry(error, 1));
});
const showApiError = (err) => err.errors && err.errors[0].message || err.detail || err.stack || JSON.stringify(err);
const toMutableConst = (o) => {
    return o;
};
const v2SingleParams = toMutableConst({
    expansions: ['attachments.media_keys', 'author_id', 'referenced_tweets.id'],
    'tweet.fields': ['created_at', 'entities'],
    'media.fields': ['url', 'variants', 'alt_text'],
    'user.fields': ['id', 'name', 'username']
});
;
class default_1 {
    constructor(opt) {
        this.launch = () => {
            this.client.appLogin().then(client => {
                this.client = client.readOnly;
                this.webshot = new webshot_1.default(this.wsUrl, this.mode, () => setTimeout(this.work, this.workInterval * 1000));
            });
        };
        this.queryUser = (username) => {
            const thread = this.lock.threads[(0, exports.linkBuilder)(username)];
            if (thread && thread.id)
                return Promise.resolve(`${username}:${thread.id}`);
            return this.client.v2.userByUsername(username).then(({ data: { username, id }, errors }) => {
                if (errors && errors.length > 0)
                    throw errors[0];
                if (thread)
                    thread.id = id;
                return `${username}:${id}`;
            });
        };
        this.queryTimelineReverse = (conf) => {
            if (!conf.since)
                return this.queryTimeline(conf);
            const count = conf.count;
            const maxID = conf.until;
            conf.count = undefined;
            const until = () => utils_1.BigNumOps.min(maxID, utils_1.BigNumOps.plus(conf.since, String(7 * 24 * 3600 * 1000 * Math.pow(2, 22))));
            conf.until = until();
            const promise = (tweets) => this.queryTimeline(conf).then(newTweets => {
                tweets = newTweets.concat(tweets);
                conf.since = conf.until;
                conf.until = until();
                if (tweets.length >= count ||
                    utils_1.BigNumOps.compare(conf.since, conf.until) >= 0) {
                    return tweets.slice(-count);
                }
                return promise(tweets);
            });
            return promise([]);
        };
        this.queryTimeline = ({ username, count, since, until, noreps, norts }) => {
            username = username.replace(/^@?(.*)$/, '@$1');
            logger.info(`querying timeline of ${username} with config: ${JSON.stringify(Object.assign(Object.assign(Object.assign(Object.assign(Object.assign({}, (count && { count })), (since && { since })), (until && { until })), (noreps && { noreps })), (norts && { norts })))}`);
            return this.queryUser(username.slice(1)).then(userNameId => this.get('userTimeline', userNameId.split(':')[1], Object.assign(Object.assign(Object.assign({ expansions: ['attachments.media_keys', 'author_id'], 'tweet.fields': ['created_at'], exclude: [
                    ...(noreps !== null && noreps !== void 0 ? noreps : true) ? ['replies'] : [],
                    ...(norts !== null && norts !== void 0 ? norts : false) ? ['retweets'] : [],
                ] }, (count && { max_results: Math.min(Math.max(count, 5), 100) })), (since && { since_id: since })), (until && { until_id: until }))).then(tweets => tweets.slice(0, count)));
        };
        this.workOnTweets = (tweets, sendTweets, refresh = false) => Promise.all(tweets.map(({ data, includes }) => ((this.redis && !refresh) ?
            this.redis.waitForProcess(`webshot/${data.id}`, this.webshotDelay * 4)
                .then(() => this.redis.getContent(`webshot/${data.id}`)) :
            Promise.reject())
            .then(content => {
            if (content === null)
                throw Error();
            logger.info(`retrieved cached webshot of tweet ${data.id} from redis database`);
            const { msg, text, author } = JSON.parse(content);
            let cacheId = data.id;
            const retweetRef = (data.referenced_tweets || []).find(ref => ref.type === 'retweeted');
            if (retweetRef)
                cacheId += `,rt:${retweetRef.id}`;
            sendTweets(cacheId, msg, text, author);
            return null;
        })
            .catch(() => {
            this.redis.startProcess(`webshot/${data.id}`);
            return { data, includes };
        }))).then(tweets => this.webshot(tweets.filter(t => t), (cacheId, msg, text, author) => {
            Promise.resolve()
                .then(() => {
                if (!this.redis)
                    return;
                const [twid, rtid] = cacheId.split(',rt:');
                logger.info(`caching webshot of tweet ${twid} to redis database`);
                this.redis.cacheContent(`webshot/${twid}`, JSON.stringify({ msg, text, author, rtid }))
                    .then(() => this.redis.finishProcess(`webshot/${twid}`));
            })
                .then(() => sendTweets(cacheId, msg, text, author));
        }, this.webshotDelay));
        this.getTweet = (id, sender, refresh = false) => ((this.redis && !refresh) ?
            this.redis.waitForProcess(`webshot/${id}`, this.webshotDelay * 4)
                .then(() => this.redis.getContent(`webshot/${id}`))
                .then(content => {
                if (content === null)
                    throw Error();
                const { rtid } = JSON.parse(content);
                return { data: Object.assign({ id }, rtid && { referenced_tweets: [{ type: 'retweeted', id: rtid }] }) };
            }) :
            Promise.reject())
            .catch(() => this.client.v2.singleTweet(id, v2SingleParams))
            .then((tweet) => {
            if (tweet.data.text) {
                logger.debug(`api returned tweet ${JSON.stringify(tweet)} for query id=${id}`);
            }
            else {
                logger.debug(`skipped querying api as this tweet has been cached`);
            }
            return this.workOnTweets([tweet], sender, refresh);
        });
        this.sendTweets = (config = { reportOnSkip: false, force: false }, ...to) => (id, msg, text, author) => {
            to.forEach(subscriber => {
                const [twid, rtid] = id.split(',rt:');
                const { sourceInfo: source, reportOnSkip, force } = config;
                const targetStr = JSON.stringify(subscriber);
                const send = () => retryOnError(() => this.bot.sendTo(subscriber, msg), (_, count, terminate) => {
                    if (count <= maxTrials) {
                        logger.warn(`retry sending to ${subscriber.chatID} for the ${ordinal(count)} time...`);
                    }
                    else {
                        logger.warn(`${count - 1} consecutive failures while sending message chain, trying plain text instead...`);
                        terminate(this.bot.sendTo(subscriber, author + text, true));
                    }
                }).then(() => {
                    if (this.redis) {
                        logger.info(`caching push status of tweet ${rtid ? `${rtid} (RTed as ${twid})` : twid} for ${targetStr}...`);
                        return this.redis.cacheForChat(rtid || twid, subscriber);
                    }
                });
                ((this.redis && !force) ? this.redis.isCachedForChat(rtid || twid, subscriber) : Promise.resolve(false))
                    .then(isCached => {
                    if (isCached) {
                        logger.info(`skipped subscriber ${targetStr} as tweet ${rtid ? `${rtid} (or its RT)` : twid} has been sent already`);
                        if (!reportOnSkip)
                            return;
                        text = `[最近发送过的推文：${rtid || twid}]`;
                        msg = author + text;
                    }
                    logger.info(`pushing data${source ? ` of ${source}` : ''} to ${targetStr}`);
                    return send();
                });
            });
        };
        this.get = (type, targetId, params) => {
            const { since_id, max_results } = params;
            const getMore = (res) => {
                if (res.errors && res.errors.length > 0)
                    throw res.errors[0];
                if (!res.meta.next_token ||
                    utils_1.BigNumOps.compare(res.tweets.slice(-1)[0].id, since_id || '0') !== 1 ||
                    !since_id && res.meta.result_count >= max_results)
                    return res;
                return res.fetchNext().then(getMore);
            };
            if (type === 'listTweets')
                delete params.since_id;
            return this.client.v2[type](targetId, params).then(getMore)
                .then(({ includes, tweets }) => tweets.map((tweet) => ({
                data: tweet,
                includes: {
                    media: includes.medias(tweet),
                    users: [includes.author(tweet)]
                }
            })));
        };
        this.work = () => {
            const lock = this.lock;
            if (this.workInterval < 1)
                this.workInterval = 1;
            if (lock.feed.length === 0) {
                setTimeout(() => {
                    this.work();
                }, this.workInterval * 1000);
                return;
            }
            if (lock.workon >= lock.feed.length)
                lock.workon = 0;
            if (!lock.threads[lock.feed[lock.workon]] ||
                !lock.threads[lock.feed[lock.workon]].subscribers ||
                lock.threads[lock.feed[lock.workon]].subscribers.length === 0) {
                logger.warn(`nobody subscribes thread ${lock.feed[lock.workon]}, removing from feed`);
                delete lock.threads[lock.feed[lock.workon]];
                lock.feed.splice(lock.workon, 1);
                fs.writeFileSync(path.resolve(this.lockfile), JSON.stringify(lock));
                this.work();
                return;
            }
            const currentFeed = lock.feed[lock.workon];
            logger.debug(`pulling feed ${currentFeed}`);
            const promise = new Promise(resolve => {
                let job = Promise.resolve();
                let id = lock.threads[currentFeed].id;
                let endpoint;
                let match = /https:\/\/twitter.com\/([^\/]+)\/lists\/([^\/]+)/.exec(currentFeed);
                if (match) {
                    endpoint = 'listTweets';
                    if (match[1] === 'i') {
                        id = match[2];
                    }
                    else if (id === undefined) {
                        job = job.then(() => this.client.v1.list({
                            owner_screen_name: match[1],
                            slug: match[2],
                        })).then(({ id_str }) => {
                            lock.threads[currentFeed].id = id = id_str;
                        });
                    }
                }
                else {
                    match = /https:\/\/twitter.com\/([^\/]+)/.exec(currentFeed);
                    if (match) {
                        endpoint = 'userTimeline';
                        if (id === undefined) {
                            job = job.then(() => this.queryUser(match[1].replace(/^@?(.*)$/, '$1'))).then(userNameId => {
                                lock.threads[currentFeed].id = id = userNameId.split(':')[1];
                            });
                        }
                    }
                }
                const offset = lock.threads[currentFeed].offset;
                job.then(() => this.get(endpoint, id, Object.assign(Object.assign(Object.assign({}, v2SingleParams), { max_results: 20 }), (offset > 0) && { since_id: offset }))).catch((err) => {
                    if (err.title === 'Not Found Error') {
                        logger.warn(`error on fetching tweets for ${currentFeed}: ${showApiError(err)}`);
                        lock.threads[currentFeed].subscribers.forEach(subscriber => {
                            logger.info(`sending notfound message of ${currentFeed} to ${JSON.stringify(subscriber)}`);
                            this.bot.sendTo(subscriber, `链接 ${currentFeed} 指向的用户或列表不存在，请退订。`).catch();
                        });
                    }
                    else {
                        logger.error(`unhandled error on fetching tweets for ${currentFeed}: ${showApiError(err)}`);
                    }
                    return [];
                }).then(resolve);
            });
            promise.then((tweets) => {
                logger.debug(`api returned ${JSON.stringify(tweets)} for feed ${currentFeed}`);
                const currentThread = lock.threads[currentFeed];
                const updateDate = () => currentThread.updatedAt = new Date().toString();
                if (tweets.length === 0) {
                    updateDate();
                    return;
                }
                const topOfFeed = tweets[0].data.id;
                const updateOffset = () => currentThread.offset = topOfFeed;
                if (currentThread.offset === '-1') {
                    updateOffset();
                    return;
                }
                if (currentThread.offset === '0')
                    tweets.splice(1);
                return this.workOnTweets(tweets, this.sendTweets({ sourceInfo: `thread ${currentFeed}` }, ...currentThread.subscribers))
                    .then(updateDate).then(updateOffset);
            })
                .then(() => {
                lock.workon++;
                let timeout = this.workInterval * 1000 / lock.feed.length;
                if (timeout < 1000)
                    timeout = 1000;
                fs.writeFileSync(path.resolve(this.lockfile), JSON.stringify(lock));
                setTimeout(() => {
                    this.work();
                }, timeout);
            });
        };
        this.client = new Twitter.TwitterApi({
            appKey: opt.consumerKey,
            appSecret: opt.consumerSecret,
        }).readOnly;
        this.lockfile = opt.lockfile;
        this.lock = opt.lock;
        this.workInterval = opt.workInterval;
        this.bot = opt.bot;
        this.webshotDelay = opt.webshotDelay;
        this.mode = opt.mode;
        this.wsUrl = opt.wsUrl;
        if (opt.redis)
            this.redis = new redis_1.default(opt.redis);
        ScreenNameNormalizer._queryUser = this.queryUser;
        exports.sendTweet = (idOrQuery, receiver, forceRefresh) => {
            const match = /^last(|-\d+)@([^\/?#,]+)((?:,no.*?=[^,]*)*)$/.exec(idOrQuery);
            const query = () => this.queryTimeline({
                username: match[2],
                count: 1 - Number(match[1]),
                noreps: { on: true, off: false }[match[3].replace(/.*,noreps=([^,]*).*/, '$1')],
                norts: { on: true, off: false }[match[3].replace(/.*,norts=([^,]*).*/, '$1')],
            }).then(tweets => tweets.slice(-1)[0].data.id);
            (match ? query() : Promise.resolve(idOrQuery))
                .then((id) => this.getTweet(id, this.sendTweets({ sourceInfo: `tweet ${id}`, reportOnSkip: true, force: forceRefresh }, receiver), forceRefresh))
                .catch((err) => {
                if (err.title !== 'Not Found Error') {
                    logger.warn(`error retrieving tweet: ${showApiError(err)}`);
                    this.bot.sendTo(receiver, `获取推文时出现错误：${showApiError(err)}`);
                }
                if (err.resource_type === 'user') {
                    return this.bot.sendTo(receiver, `找不到用户 ${match[2].replace(/^@?(.*)$/, '@$1')}。`);
                }
                this.bot.sendTo(receiver, '找不到请求的推文，它可能已被删除。');
            });
        };
        exports.sendTimeline = ({ username, count, since, until, noreps, norts }, receiver) => {
            const countNum = Number(count) || 10;
            (countNum > 0 ? this.queryTimeline : this.queryTimelineReverse)({
                username,
                count: Math.abs(countNum),
                since: utils_1.BigNumOps.parse(since) || snowflake(new Date(since).getTime()),
                until: utils_1.BigNumOps.parse(until) || snowflake(new Date(until).getTime()),
                noreps: { on: true, off: false }[noreps],
                norts: { on: true, off: false }[norts],
            })
                .then(tweets => (0, utils_1.chainPromises)(tweets.map(({ data }) => () => this.bot.sendTo(receiver, `\
编号：${data.id}
时间：${data.created_at}
媒体：${(data.attachments || {}).media_keys ? '有' : '无'}
正文：\n${data.text.replace(/^([\s\S\n]{50})[\s\S\n]+?( https:\/\/t.co\/.*)?$/, '$1…$2')}`))
                .concat(() => this.bot.sendTo(receiver, tweets.length ?
                '时间线查询完毕，使用 /twitter_view <编号> 查看推文详细内容。' :
                '时间线查询完毕，没有找到符合条件的推文。'))))
                .catch((err) => {
                if (err.title !== 'Not Found Error') {
                    logger.warn(`error retrieving timeline: ${showApiError(err)}`);
                    return this.bot.sendTo(receiver, `获取时间线时出现错误：${showApiError(err)}`);
                }
                this.bot.sendTo(receiver, `找不到用户 ${username.replace(/^@?(.*)$/, '@$1')}。`);
            });
        };
    }
}
exports.default = default_1;