// ==UserScript==
// @name         从Discogs添加豆瓣条目
// @license MIT
// @namespace    http://tampermonkey.net/
// @version      1.0000000006
// @license      MIT
// @run-at document-end
// @description
// @author       越洋飞机
// @match        *://www.discogs.com/release*
// @match        *://www.discogs.com/master*
// @match        *://music.douban.com/new_subject*
// @icon         https://s.discogs.com/badaa268132c5df6360d067acd267fbebd755915/images/discogs-white.png?5
// @grant        GM_xmlhttpRequest
// @grant        GM_download
// @grant        GM_openInTab
// @grant        GM_addElement
// @grant        GM_registerMenuCommand
// @description 添加豆瓣条目，自动填写信息，使用https://api.discogs.com
// @downloadURL none
// ==/UserScript==

(function () {
    'use strict';
    async function GetRequest(url = '') {
        const response = await fetch(url);
        return response.json(); // parses JSON response into native JavaScript objects
    }

    var doubanURL = "https://music.douban.com/new_subject";
    var discogsURL = window.location.href;
    console.log(discogsURL);
    function NewSubject() {
        let masterURL = "https://www.discogs.com/master/"
        let releaseURL = "https://www.discogs.com/release/"
        let apiURL = "https://api.discogs.com/"
        if (discogsURL.startsWith(masterURL)) {
            let pos = discogsURL.indexOf("-");
            let masterID = discogsURL.substring(31, pos);
            let httpRequest = new XMLHttpRequest();
            GetRequest(apiURL.concat("masters/", masterID))
                .then(data => {
                    console.log(data);
                    let releaseID = data.main_release;
                    addItem(releaseID);
                });
        } else if (discogsURL.startsWith(releaseURL)) {
            let pos = discogsURL.indexOf("-")
            let releaseID = discogsURL.substring(32, pos)
            addItem(releaseID)
        }
    }
    /**
            function GetRequest(url,storageName) {
            var httpRequest = new XMLHttpRequest();
            var json;
            httpRequest.open('GET', url, true);
            httpRequest.send();
            httpRequest.onreadystatechange = function () {
                if (httpRequest.readyState == 4 && httpRequest.status == 200) {

                    json = JSON.parse(httpRequest.responseText);
                    localStorage.setItem(storageName,httpRequest.responseText);
                }
            };
        }
    **/
    function addItem(releaseID) {
        console.log(releaseID)
        GetRequest('https://api.discogs.com/releases/' + releaseID + '?token=tgRatMaOmFfXjBwHNBlZDQtXrOAELZwpywEOCEbb')
            .then(data => {
                console.log(data);
                var info = new Object();
                info.artists = [...data.artists];
                info.genres = [...data.genres];
                info.numArtists = info.artists.length;
                info.label = data.labels[0].name;
                info.title = data.title;
                info.format = data.formats[0].name;
                if (data.styles) {
                    info.styles = [...data.styles];
                }
                else {
                    info.styles = "Unknown";
                }
                if (data.released) {
                    info.release = data.released;
                }
                else {
                    info.release = "Unknown";
                }
                if (data.notes) {
                    info.note = data.notes;
                }
                else {
                    info.note = "None";
                }
                if (data.country) {
                    info.country = data.country;
                }
                else {
                    info.country = "Unknown";
                }
                info.link = discogsURL;
                info.tracklist = ''
                for (let index = 0; index < data.tracklist.length; index++) {
                    if (data.tracklist[index].type_ == 'heading') {
                        info.tracklist += data.tracklist[index].title + '\n';
                    }
                    if (data.tracklist[index].type_ == 'track') {
                        info.tracklist += data.tracklist[index].position + '. ' + data.tracklist[index].title + ' ' + data.tracklist[index].duration + '\n';
                    }
                }
                if (data.formats[0].descriptions) {
                    if (data.formats[0].descriptions.indexOf("Album") > -1) {
                        info.type = "专辑"
                    }
                    else if (data.formats[0].descriptions.indexOf("Single") > -1) {
                        info.type = "单曲";
                    }
                    else if (data.formats[0].descriptions.indexOf("Compilation") > -1) {
                        info.type = "选集";
                    }
                    else if (data.formats[0].descriptions.indexOf("EP") > -1) {
                        info.type = "EP";
                    }
                    else if (data.formats[0].descriptions.indexOf("LP") > -1 || data.formats[0].descriptions.indexOf("Stereo") > -1 || data.formats[0].descriptions.indexOf("12\"") > -1 || data.formats[0].descriptions.indexOf("33 ⅓ RPM") > -1) {
                        info.type = "专辑";
                    }
                    else if (data.formats[0].descriptions.indexOf("Mini-Album") > -1) {// whatever
                        info.type = "EP";
                    }
                    else if (data.formats[0].descriptions.indexOf("7\"") > -1 || data.formats[0].descriptions.indexOf("45 RPM") > -1) {
                        info.type = "单曲";
                    }
                }
                console.log(info);
                if (data.images) {
                    GM_download(data.images[0].uri, info.title + '.jpg');
                }
                let doubanWindow = window.open(doubanURL, JSON.stringify(info));
            });


    };
    GM_registerMenuCommand("添加条目", NewSubject, '');

}
)();