119 lines
3.6 KiB
JavaScript
119 lines
3.6 KiB
JavaScript
import * as metadatasearch from "metadatasearch.js"
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export function main(file) {
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// iterate though all tags of the file to change fields in all of them
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for (const tag of file.tags) {
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changeTagFields(file, tag);
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}
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// submit changes from the JavaScript-context to the tag editor application; does not save changes to disk yet
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file.applyChanges();
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// return a falsy value to skip the file after all
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return !isTruthy(settings.dryRun);
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}
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const mainTextFields = ["title", "artist", "album"];
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const personalFields = ["comment", "rating"];
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function isString(value) {
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return typeof(value) === "string" || value instanceof String;
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}
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function isTruthy(value) {
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return value && value !== "false" && value !== "0";
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}
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function logTagInfo(file, tag) {
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// log tag type and supported fields
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const fields = tag.fields;
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utility.diag("debug", tag.type, "tag");
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utility.diag("debug", Object.keys(fields).join(", "), "supported fields");
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// log fields for debugging purposes
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for (const [key, value] of Object.entries(fields)) {
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const content = value.content;
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if (content !== undefined && content != null && !(content instanceof ArrayBuffer)) {
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utility.diag("debug", content, key + " (" + value.type + ")");
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}
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}
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}
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function applyFixesToMainFields(file, tag) {
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const fields = tag.fields;
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for (const key of mainTextFields) {
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for (const value of fields[key]) {
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if (isString(value.content)) {
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value.content = value.content.trim();
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value.content = utility.fixUmlauts(value.content);
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value.content = utility.formatName(value.content);
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}
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}
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}
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}
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function clearPersonalFields(file, tag) {
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const fields = tag.fields;
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for (const key of personalFields) {
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fields[key] = [];
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}
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}
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function addTotalNumberOfTracks(file, tag) {
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const track = tag.fields.track;
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if (track.find(value => !value.content.total) === undefined) {
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return; // skip if already assigned
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}
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const extension = file.extension;
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const dirItems = utility.readDirectory(file.containingDirectory) || [];
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const total = dirItems.filter(fileName => fileName.endsWith(extension)).length;
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if (!total) {
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return;
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}
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for (const value of track) {
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value.content.total |= total;
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}
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}
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function addLyrics(file, tag) {
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const fields = tag.fields;
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if (fields.lyrics.length) {
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return; // skip if already assigned
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}
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const firstTitle = fields.title?.[0]?.content;
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const firstArtist = fields.artist?.[0]?.content;
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if (firstTitle && firstArtist) {
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fields.lyrics = metadatasearch.queryLyrics({title: firstTitle, artist: firstArtist});
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}
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}
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function addCover(file, tag) {
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const fields = tag.fields;
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if (fields.cover.length) {
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return; // skip if already assigned
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}
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const firstAlbum = fields.album?.[0]?.content?.replace(/ \(.*\)/, '');
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const firstArtist = fields.artist?.[0]?.content;
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if (firstAlbum && firstArtist) {
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fields.cover = metadatasearch.queryCover({album: firstAlbum, artist: firstArtist});
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}
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}
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function addMiscFields(file, tag) {
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// assume the number of disks is always one for now
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const fields = tag.fields;
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if (!fields.disk.length) {
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fields.disk = "1/1";
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}
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}
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function changeTagFields(file, tag) {
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logTagInfo(file, tag);
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applyFixesToMainFields(file, tag);
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clearPersonalFields(file, tag);
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addTotalNumberOfTracks(file, tag);
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addMiscFields(file, tag);
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addLyrics(file, tag);
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addCover(file, tag);
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}
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