mirror of
https://github.com/advplyr/audiobookshelf.git
synced 2025-01-08 00:08:14 +01:00
82 lines
2.4 KiB
JavaScript
82 lines
2.4 KiB
JavaScript
const { DataTypes, Model } = require('sequelize')
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/*
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* Polymorphic association: https://sequelize.org/docs/v6/advanced-association-concepts/polymorphic-associations/
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* Book has many AudioTrack. PodcastEpisode has one AudioTrack.
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*/
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module.exports = (sequelize) => {
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class AudioTrack extends Model {
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getMediaItem(options) {
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if (!this.mediaItemType) return Promise.resolve(null)
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const mixinMethodName = `get${sequelize.uppercaseFirst(this.mediaItemType)}`
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return this[mixinMethodName](options)
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}
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}
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AudioTrack.init({
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id: {
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type: DataTypes.UUID,
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defaultValue: DataTypes.UUIDV4,
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primaryKey: true
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},
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mediaItemId: DataTypes.UUIDV4,
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mediaItemType: DataTypes.STRING,
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index: DataTypes.INTEGER,
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startOffset: DataTypes.FLOAT,
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duration: DataTypes.FLOAT,
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title: DataTypes.STRING,
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mimeType: DataTypes.STRING,
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codec: DataTypes.STRING,
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trackNumber: DataTypes.INTEGER,
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discNumber: DataTypes.INTEGER
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}, {
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sequelize,
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modelName: 'audioTrack'
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})
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const { book, podcastEpisode, mediaFile } = sequelize.models
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mediaFile.hasOne(AudioTrack)
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AudioTrack.belongsTo(mediaFile)
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book.hasMany(AudioTrack, {
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foreignKey: 'mediaItemId',
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constraints: false,
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scope: {
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mediaItemType: 'book'
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}
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})
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AudioTrack.belongsTo(book, { foreignKey: 'mediaItemId', constraints: false })
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podcastEpisode.hasOne(AudioTrack, {
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foreignKey: 'mediaItemId',
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constraints: false,
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scope: {
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mediaItemType: 'podcastEpisode'
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}
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})
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AudioTrack.belongsTo(podcastEpisode, { foreignKey: 'mediaItemId', constraints: false })
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AudioTrack.addHook('afterFind', findResult => {
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if (!findResult) return
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if (!Array.isArray(findResult)) findResult = [findResult]
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for (const instance of findResult) {
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if (instance.mediaItemType === 'book' && instance.book !== undefined) {
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instance.mediaItem = instance.book
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instance.dataValues.mediaItem = instance.dataValues.book
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} else if (instance.mediaItemType === 'podcastEpisode' && instance.podcastEpisode !== undefined) {
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instance.mediaItem = instance.podcastEpisode
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instance.dataValues.mediaItem = instance.dataValues.podcastEpisode
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}
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// To prevent mistakes:
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delete instance.book
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delete instance.dataValues.book
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delete instance.podcastEpisode
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delete instance.dataValues.podcastEpisode
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}
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})
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return AudioTrack
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} |