downBiliBangumiProgress.js

//该文件并没有被严格地测试过
(async () => {
    const APIHOST = 'https://api.bilibili.com';
    const uid = window.__BiliUser__.cache.data.mid;
    
    function fetchJson(uri, init) {
        init = Object.assign({}, { credentials: "include" }, init);

        return fetch(uri, init)
            .then((v) => v.json());
    }
    
    function getBangumiLastEpIndex(sid) {
        return fetchJson(APIHOST + `/pgc/view/web/season/user/status?season_id=${ sid }`)
            .then((v) => Number.isNaN(+(v.result?.progress?.last_ep_index)) 
                  ? -1
                  : +(v.result.progress.last_ep_index)
             //未观看的番剧没有 progress 属性
             //有些番剧的 last_ep_index 是中文字符串，无法直接判断集数
             )
    }
    
    function getSubscriptiveMediaList(uid, type, page = 1) {
        return fetchJson(APIHOST + `/x/space/bangumi/follow/list?type=${ type }&pn=${ page }&ps=30&vmid=${ uid }`)
            .then(v => v.data);
    }
    
    function getBGMData() {    
        return fetchJson('https://cdn.jsdelivr.net/npm/bangumi-data@0.3/dist/data.json', { credentials: "omit" })
    }
    
    function *range(start, end) {
        for (let i = start; i < end; i++) {
            yield i;
        }
    }
    
    function save(blob) {
        const a = document.createElement('a');
        const event = new MouseEvent('click');
        a.download = "progress.json";
        a.href = URL.createObjectURL(blob, {type: 'application/json'});
        a.dispatchEvent(event);
        a.remove();
    }
    
    function getMediaIdToBGMSubjectId(BGMData) {
        const map = new Map();
        
        for (const item of BGMData.items) {
            const site = item.sites;
            const bili = site.find(v => v.site === 'bilibili');
            const bangumi = site.find(v => v.site === 'bangumi');
            
            if (bili && bangumi) {
                map.set(+bili.id, +bangumi.id);
            }
        }
        
        return (mid) => map.get(mid);
    }
    
    
    
        
    const mediaArr = await (async () => {
            const mediaArr = [];
            
            for (let type = 1; type < 3; type++) {
                for (let i = 1; true; i++) {
                    const data = await getSubscriptiveMediaList(uid, type, i);
                    mediaArr.push(...data.list)
                
                    if (i * 30 > data.total) break;
                }
            }
        
            return mediaArr;
        })().then((v) => {
            if (v.length < 1) throw new Error('似乎没有任何的订阅?')
            console.log(`总共 ${ v.length } 条订阅, 正在处理中......`)
            return v;
        });
    
        const mediaSeasonIdArr = mediaArr.map(v => v.season_id);
        const mediaLastEpIndexArr =  await (async (mediaSeasonIdArr) => {
            const LastEpIndexes = [];
            
            for (const sid of mediaSeasonIdArr) {
                const lastEpIndex = await getBangumiLastEpIndex(sid);
                LastEpIndexes.push(lastEpIndex)
            }
            
            return LastEpIndexes;
        })(mediaSeasonIdArr);
        
    const mediaStatusArr = ((mediaArr, mediaLastEpIndexArr) => {
        return mediaArr.map((media, index) => {
            const { is_finish, total_count } = media;
            const lastEpIndex = mediaLastEpIndexArr[index];
            
            if (lastEpIndex < 0) return 'on_hold';
            if (!is_finish) return 'do';
            if (lastEpIndex < total_count) return 'do'
            
            return 'collect'
        })
    })(mediaArr, mediaLastEpIndexArr)
    
    const progressData = await (async (mediaArr, mediaStatusArr, mediaLastEpIndexArr) => {
        const toBGMSubjectId = getMediaIdToBGMSubjectId(await getBGMData());
        
        const progress = [];
        
        for (const index in mediaArr) {
            const meida = mediaArr[index];
            const mid = meida.media_id;
            
            let id = toBGMSubjectId(mid);
            
            if (!Number.isInteger(id)) {
                const title = meida.title;
                const tmp = +window.prompt(
                    `很抱歉，脚本无法从 bangumi-data 找到 《${ title }》(mid: ${mid}) 对应的 Bangumi.tv 条目 id \n\n` +
                    '您需要手动输入条目 id，如果您不明白该如何找到对应的 id，请直接点击确认即可，脚本会忽略该番剧。'
                ,'0');
                
                if (Number.isInteger(tmp) && tmp > 0) { id = tmp } else { continue; };
            }
            
            const data = {
                id,
                status: mediaStatusArr[index]
            };
             
            const lastEpIndex = mediaLastEpIndexArr[index];
            if (lastEpIndex > 0) data.watchedEps = [...range(1, lastEpIndex + 1)];
            
            progress.push(data);
        }
        
        return progress
    })(mediaArr, mediaStatusArr, mediaLastEpIndexArr)
    
    
    console.debug(progressData);
    console.log('处理完毕')
    
    save(new Blob([JSON.stringify(progressData)]));
    
})()