215 lines
6.3 KiB
JavaScript
215 lines
6.3 KiB
JavaScript
var fs = require("fs");
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var path = require("path");
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var mm = require("musicmetadata");
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var express = require("express");
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var art = {
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artists: {}
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};
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var tracks = {
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artists: {}
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};
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var music = {
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artists: {}
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};
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var toURL = function (str) {
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return encodeURI(str);
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};
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var promise = new Promise(function (resolve, reject) {
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fs.readdir(path.join(__dirname, "music"), function (err, files) {
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if (err || !files) {
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resolve();
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return;
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}
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var promises = [];
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files.forEach(function (artist) {
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if (artist.charAt(0) == ".") {
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return;
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}
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art.artists[artist] = {
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albums: {},
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picture: []
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};
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tracks.artists[artist] = {
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albums: {}
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};
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music.artists[artist] = {
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albums: {}
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};
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var promise = new Promise(function (resolve, reject) {
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fs.readdir(path.join(__dirname, "music", artist), function (err, files) {
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if (err || !files) {
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resolve();
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return;
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}
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var promises = [];
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files.forEach(function (album) {
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if (album.charAt(0) == ".") {
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return;
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}
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art.artists[artist].albums[album] = {
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tracks: [],
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picture: []
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};
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tracks.artists[artist].albums[album] = {
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tracks: []
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};
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music.artists[artist].albums[album] = {
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tracks: []
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};
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var promise = new Promise(function (resolve, reject) {
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fs.readdir(path.join(__dirname, "music", artist, album), function (err, files) {
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if (err || !files) {
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resolve();
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return;
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}
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var promises = [];
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files.forEach(function (title) {
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if (title.charAt(0) == ".") {
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return;
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}
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var fn = path.join(__dirname, "music", artist, album, title);
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var promise = new Promise(function (resolve, reject) {
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fs.stat(fn, function (err, stat) {
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if (err || !stat) {
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resolve();
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return;
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}
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if (stat.isFile()) {
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if (title.match(/(.mp3|.wav|.m4a)/)) {
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mm(fs.createReadStream(fn), function (err, metadata) {
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if (err || !metadata) {
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console.log(err);
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}
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else {
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var number = parseInt(title.split(" ")[0], 10);
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if (isNaN(number)) {
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number = music.artists[artist].albums[album].tracks.length + 1;
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}
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metadata.number = number;
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metadata.file = toURL("/tracks/" + artist + "/" + album + "/" + title);
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music.artists[artist].albums[album].tracks[number - 1] = metadata;
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tracks.artists[artist].albums[album].tracks[number - 1] = {
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filename: fn,
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file: metadata.file
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};
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art.artists[artist].albums[album].tracks[number - 1] = {
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picture: []
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};
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art.artists[artist].albums[album].tracks[number - 1].picture = metadata.picture;
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if (!art.artists[artist].albums[album].picture[0] && metadata.picture[0]) {
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art.artists[artist].albums[album].picture = metadata.picture;
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}
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if (!art.artists[artist].picture[0] && metadata.picture[0]) {
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art.artists[artist].picture = metadata.picture;
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}
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music.artists[artist].albums[album].tracks[number - 1].picture = undefined;
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}
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resolve();
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});
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}
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else if (title.match(/(.jpg|.png)/)) {
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fs.readFile(fn, function (err, data) {
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if (!err) {
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var fns = fn.split(".");
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art.artists[artist].albums[album].picture = [{
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format: fns[fns.length - 1],
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data: data
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}];
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art.artists[artist].picture = art.artists[artist].albums[album].picture;
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}
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resolve();
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});
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}
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else {
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resolve();
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}
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}
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else {
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resolve();
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}
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});
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});
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promises.push(promise);
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});
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Promise.all(promises).then(function () {
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music.artists[artist].albums[album].tracks.forEach(function (track, i) {
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if ((!art.artists[artist].albums[album].tracks[i].picture[0]) && art.artists[artist].albums[album].picture[0]) {
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art.artists[artist].albums[album].tracks[i].picture = art.artists[artist].albums[album].picture;
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}
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});
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if (music.artists[artist].albums[album].tracks.length < 1) {
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delete music.artists[artist].albums[album];
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}
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resolve();
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});
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});
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});
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promises.push(promise);
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});
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Promise.all(promises).then(function () {
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if (music.artists[artist].albums.length < 1) {
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delete music.artists[artist];
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}
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resolve();
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});
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});
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});
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promises.push(promise);
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});
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Promise.all(promises).then(resolve);
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});
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});
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promise.then(function () {
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try {
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for (var artist in music.artists) {
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for (var album in music.artists[artist].albums) {
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for (var track in music.artists[artist].albums[album].tracks) {
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music.artists[artist].albums[album].tracks[track].picture = toURL("/art/" + artist + "/" + album + "/" + (parseInt(track, 10) + 1));
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}
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music.artists[artist].albums[album].picture = toURL("/art/" + artist + "/" + album);
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}
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music.artists[artist].picture = toURL("/art/" + artist);
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}
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}
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catch (e) {
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console.error(e);
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}
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console.log("done");
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});
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var app = express();
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app.get("/", function (req, res) {
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res.end(JSON.stringify(music));
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});
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app.get("/art/:artist", function (req, res) {
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res.end(art.artists[req.params.artist].picture[0].data);
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});
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app.get("/art/:artist/:album", function (req, res) {
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res.end(art.artists[req.params.artist].albums[req.params.album].picture[0].data);
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});
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app.get("/art/:artist/:album/:track", function (req, res) {
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res.end(art.artists[req.params.artist].albums[req.params.album].tracks[parseInt(req.params.track, 10) - 1].picture[0].data);
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});
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app.get("/tracks/:artist/:album/:track", function (req, res, next) {
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if (parseInt(req.params.track, 10) == req.params.track) {
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res.sendFile(tracks.artists[req.params.artist].albums[req.params.album].tracks[parseInt(req.params.track, 10) - 1].filename);
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}
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else {
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next();
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}
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});
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app.use("/tracks", express.static("music"));
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app.listen(process.env.PORT || 8080);
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