+ /* ************ Email verification ************ */
+
+ async setVerifyEmailVerificationString (userId: number) {
+ const generatedString = await generateRandomString(32)
+
+ await this.setValue(this.generateVerifyEmailKey(userId), generatedString, USER_EMAIL_VERIFY_LIFETIME)
+
+ return generatedString
+ }
+
+ async getVerifyEmailLink (userId: number) {
+ return this.getValue(this.generateVerifyEmailKey(userId))
+ }
+
+ /* ************ Contact form per IP ************ */
+
+ async setContactFormIp (ip: string) {
+ return this.setValue(this.generateContactFormKey(ip), '1', CONTACT_FORM_LIFETIME)
+ }
+
+ async doesContactFormIpExist (ip: string) {
+ return this.exists(this.generateContactFormKey(ip))
+ }
+
+ /* ************ Views per IP ************ */
+
+ setIPVideoView (ip: string, videoUUID: string, isLive: boolean) {
+ const lifetime = isLive
+ ? VIEW_LIFETIME.LIVE
+ : VIEW_LIFETIME.VIDEO
+
+ return this.setValue(this.generateViewKey(ip, videoUUID), '1', lifetime)
+ }
+
+ async doesVideoIPViewExist (ip: string, videoUUID: string) {
+ return this.exists(this.generateViewKey(ip, videoUUID))
+ }
+
+ /* ************ Tracker IP block ************ */
+
+ setTrackerBlockIP (ip: string) {
+ return this.setValue(this.generateTrackerBlockIPKey(ip), '1', TRACKER_RATE_LIMITS.BLOCK_IP_LIFETIME)
+ }
+
+ async doesTrackerBlockIPExist (ip: string) {
+ return this.exists(this.generateTrackerBlockIPKey(ip))
+ }
+
+ /* ************ API cache ************ */
+
+ async getCachedRoute (req: express.Request) {
+ const cached = await this.getObject(this.generateCachedRouteKey(req))
+
+ return cached as CachedRoute
+ }
+
+ setCachedRoute (req: express.Request, body: any, lifetime: number, contentType?: string, statusCode?: number) {
+ const cached: CachedRoute = Object.assign(
+ {},
+ { body: body.toString() },
+ (contentType) ? { contentType } : null,
+ (statusCode) ? { statusCode: statusCode.toString() } : null
+ )
+
+ return this.setObject(this.generateCachedRouteKey(req), cached, lifetime)
+ }
+
+ /* ************ Video views ************ */
+
+ addVideoView (videoId: number) {
+ const keyIncr = this.generateVideoViewKey(videoId)
+ const keySet = this.generateVideosViewKey()
+
+ return Promise.all([
+ this.addToSet(keySet, videoId.toString()),
+ this.increment(keyIncr)
+ ])
+ }
+
+ async getVideoViews (videoId: number, hour: number) {
+ const key = this.generateVideoViewKey(videoId, hour)
+
+ const valueString = await this.getValue(key)
+ const valueInt = parseInt(valueString, 10)
+
+ if (isNaN(valueInt)) {
+ logger.error('Cannot get videos views of video %d in hour %d: views number is NaN (%s).', videoId, hour, valueString)
+ return undefined
+ }
+
+ return valueInt
+ }
+
+ async getVideosIdViewed (hour: number) {
+ const key = this.generateVideosViewKey(hour)
+
+ const stringIds = await this.getSet(key)
+ return stringIds.map(s => parseInt(s, 10))
+ }
+
+ deleteVideoViews (videoId: number, hour: number) {
+ const keySet = this.generateVideosViewKey(hour)
+ const keyIncr = this.generateVideoViewKey(videoId, hour)
+
+ return Promise.all([
+ this.deleteFromSet(keySet, videoId.toString()),
+ this.deleteKey(keyIncr)
+ ])
+ }
+
+ /* ************ Keys generation ************ */
+
+ generateCachedRouteKey (req: express.Request) {
+ return req.method + '-' + req.originalUrl
+ }
+
+ private generateVideosViewKey (hour?: number) {
+ if (!hour) hour = new Date().getHours()
+
+ return `videos-view-h${hour}`
+ }
+
+ private generateVideoViewKey (videoId: number, hour?: number) {
+ if (!hour) hour = new Date().getHours()
+
+ return `video-view-${videoId}-h${hour}`
+ }
+
+ private generateResetPasswordKey (userId: number) {
+ return 'reset-password-' + userId
+ }
+
+ private generateVerifyEmailKey (userId: number) {
+ return 'verify-email-' + userId
+ }
+
+ private generateViewKey (ip: string, videoUUID: string) {
+ return `views-${videoUUID}-${ip}`
+ }
+
+ private generateTrackerBlockIPKey (ip: string) {
+ return `tracker-block-ip-${ip}`
+ }
+
+ private generateContactFormKey (ip: string) {
+ return 'contact-form-' + ip
+ }
+
+ /* ************ Redis helpers ************ */
+