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https://github.com/advplyr/audiobookshelf.git
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79 lines
2.4 KiB
JavaScript
79 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 MediaProgress. PodcastEpisode has many MediaProgress.
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*/
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module.exports = (sequelize) => {
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class MediaProgress 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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MediaProgress.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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duration: DataTypes.FLOAT,
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currentTime: DataTypes.FLOAT,
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isFinished: DataTypes.BOOLEAN,
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hideFromContinueListening: DataTypes.BOOLEAN,
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finishedAt: DataTypes.DATE
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}, {
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sequelize,
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modelName: 'mediaProgress'
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})
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const { book, podcastEpisode, user } = sequelize.models
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book.hasMany(MediaProgress, {
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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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MediaProgress.belongsTo(book, { foreignKey: 'mediaItemId', constraints: false })
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podcastEpisode.hasMany(MediaProgress, {
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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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MediaProgress.belongsTo(podcastEpisode, { foreignKey: 'mediaItemId', constraints: false })
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MediaProgress.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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user.hasMany(MediaProgress)
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MediaProgress.belongsTo(user)
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return MediaProgress
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} |