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import * as Bluebird from 'bluebird'
import { Transaction } from 'sequelize'
import { AllowNull, BelongsToMany, Column, CreatedAt, Is, Model, Table, UpdatedAt } from 'sequelize-typescript'
import { isVideoTagValid } from '../../helpers/custom-validators/videos'
import { throwIfNotValid } from '../utils'
import { VideoModel } from './video'
import { VideoTagModel } from './video-tag'
@Table({
tableName: 'tag',
timestamps: false,
indexes: [
{
fields: [ 'name' ],
unique: true
}
]
})
export class TagModel extends Model<TagModel> {
@AllowNull(false)
@Is('VideoTag', value => throwIfNotValid(value, isVideoTagValid, 'tag'))
@Column
name: string
@CreatedAt
createdAt: Date
@UpdatedAt
updatedAt: Date
@BelongsToMany(() => VideoModel, {
foreignKey: 'tagId',
through: () => VideoTagModel,
onDelete: 'CASCADE'
})
Videos: VideoModel[]
static findOrCreateTags (tags: string[], transaction: Transaction) {
const tasks: Bluebird<TagModel>[] = []
tags.forEach(tag => {
const query = {
where: {
name: tag
},
defaults: {
name: tag
}
}
if (transaction) query['transaction'] = transaction
const promise = TagModel.findOrCreate(query)
.then(([ tagInstance ]) => tagInstance)
tasks.push(promise)
})
return Promise.all(tasks)
}
}
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