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import * as Sequelize from 'sequelize'
import {
AllowNull,
BeforeDestroy,
BelongsTo,
Column,
CreatedAt,
ForeignKey,
Is,
Model,
Scopes,
Table,
UpdatedAt
} from 'sequelize-typescript'
import { throwIfNotValid } from '../utils'
import { VideoModel } from './video'
import { isVideoCaptionLanguageValid } from '../../helpers/custom-validators/video-captions'
import { VideoCaption } from '../../../shared/models/videos/caption/video-caption.model'
import { CONFIG, STATIC_PATHS, VIDEO_LANGUAGES } from '../../initializers'
import { join } from 'path'
import { logger } from '../../helpers/logger'
import { remove } from 'fs-extra'
export enum ScopeNames {
WITH_VIDEO_UUID_AND_REMOTE = 'WITH_VIDEO_UUID_AND_REMOTE'
}
@Scopes({
[ScopeNames.WITH_VIDEO_UUID_AND_REMOTE]: {
include: [
{
attributes: [ 'uuid', 'remote' ],
model: () => VideoModel.unscoped(),
required: true
}
]
}
})
@Table({
tableName: 'videoCaption',
indexes: [
{
fields: [ 'videoId' ]
},
{
fields: [ 'videoId', 'language' ],
unique: true
}
]
})
export class VideoCaptionModel extends Model<VideoCaptionModel> {
@CreatedAt
createdAt: Date
@UpdatedAt
updatedAt: Date
@AllowNull(false)
@Is('VideoCaptionLanguage', value => throwIfNotValid(value, isVideoCaptionLanguageValid, 'language'))
@Column
language: string
@ForeignKey(() => VideoModel)
@Column
videoId: number
@BelongsTo(() => VideoModel, {
foreignKey: {
allowNull: false
},
onDelete: 'CASCADE'
})
Video: VideoModel
@BeforeDestroy
static async removeFiles (instance: VideoCaptionModel) {
if (!instance.Video) {
instance.Video = await instance.$get('Video') as VideoModel
}
if (instance.isOwned()) {
logger.info('Removing captions %s of video %s.', instance.Video.uuid, instance.language)
try {
await instance.removeCaptionFile()
} catch (err) {
logger.error('Cannot remove caption file of video %s.', instance.Video.uuid)
}
}
return undefined
}
static loadByVideoIdAndLanguage (videoId: string | number, language: string) {
const videoInclude = {
model: VideoModel.unscoped(),
attributes: [ 'id', 'remote', 'uuid' ],
where: { }
}
if (typeof videoId === 'string') videoInclude.where['uuid'] = videoId
else videoInclude.where['id'] = videoId
const query = {
where: {
language
},
include: [
videoInclude
]
}
return VideoCaptionModel.findOne(query)
}
static insertOrReplaceLanguage (videoId: number, language: string, transaction: Sequelize.Transaction) {
const values = {
videoId,
language
}
return VideoCaptionModel.upsert(values, { transaction })
}
static listVideoCaptions (videoId: number) {
const query = {
order: [ [ 'language', 'ASC' ] ],
where: {
videoId
}
}
return VideoCaptionModel.scope(ScopeNames.WITH_VIDEO_UUID_AND_REMOTE).findAll(query)
}
static getLanguageLabel (language: string) {
return VIDEO_LANGUAGES[language] || 'Unknown'
}
static deleteAllCaptionsOfRemoteVideo (videoId: number, transaction: Sequelize.Transaction) {
const query = {
where: {
videoId
},
transaction
}
return VideoCaptionModel.destroy(query)
}
isOwned () {
return this.Video.remote === false
}
toFormattedJSON (): VideoCaption {
return {
language: {
id: this.language,
label: VideoCaptionModel.getLanguageLabel(this.language)
},
captionPath: this.getCaptionStaticPath()
}
}
getCaptionStaticPath () {
return join(STATIC_PATHS.VIDEO_CAPTIONS, this.getCaptionName())
}
getCaptionName () {
return `${this.Video.uuid}-${this.language}.vtt`
}
removeCaptionFile () {
return remove(CONFIG.STORAGE.CAPTIONS_DIR + this.getCaptionName())
}
}
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