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import { LRUCache } from 'lru-cache'
import { LRU_CACHE } from '@server/initializers/constants'
import { MUserAccountUrl } from '@server/types/models'
import { pick } from '@shared/core-utils'
import { buildUUID } from '@shared/extra-utils'
// ---------------------------------------------------------------------------
// Create temporary tokens that can be used as URL query parameters to access video static files
// ---------------------------------------------------------------------------
class VideoTokensManager {
private static instance: VideoTokensManager
private readonly lruCache = new LRUCache<string, { videoUUID: string, user: MUserAccountUrl }>({
max: LRU_CACHE.VIDEO_TOKENS.MAX_SIZE,
ttl: LRU_CACHE.VIDEO_TOKENS.TTL
})
private constructor () {}
create (options: {
user: MUserAccountUrl
videoUUID: string
}) {
const token = buildUUID()
const expires = new Date(new Date().getTime() + LRU_CACHE.VIDEO_TOKENS.TTL)
this.lruCache.set(token, pick(options, [ 'user', 'videoUUID' ]))
return { token, expires }
}
hasToken (options: {
token: string
videoUUID: string
}) {
const value = this.lruCache.get(options.token)
if (!value) return false
return value.videoUUID === options.videoUUID
}
getUserFromToken (options: {
token: string
}) {
const value = this.lruCache.get(options.token)
if (!value) return undefined
return value.user
}
static get Instance () {
return this.instance || (this.instance = new this())
}
}
// ---------------------------------------------------------------------------
export {
VideoTokensManager
}
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