+import * as express from 'express'
+import { buildNSFWFilter } from '../../helpers/express-utils'
+import { VideoModel } from '../../models/video/video'
+import { asyncMiddleware, executeIfActivityPub } from '../../middlewares'
+import { TagModel } from '../../models/video/tag'
+import { VideosOverview } from '../../../shared/models/overviews'
+import { OVERVIEWS, ROUTE_CACHE_LIFETIME } from '../../initializers'
+import { cacheRoute } from '../../middlewares/cache'
+
+const overviewsRouter = express.Router()
+
+overviewsRouter.get('/videos',
+ executeIfActivityPub(asyncMiddleware(cacheRoute(ROUTE_CACHE_LIFETIME.OVERVIEWS.VIDEOS))),
+ asyncMiddleware(getVideosOverview)
+)
+
+// ---------------------------------------------------------------------------
+
+export { overviewsRouter }
+
+// ---------------------------------------------------------------------------
+
+// This endpoint could be quite long, but we cache it
+async function getVideosOverview (req: express.Request, res: express.Response) {
+ const attributes = await buildSamples()
+ const result: VideosOverview = {
+ categories: await Promise.all(attributes.categories.map(c => getVideosByCategory(c, res))),
+ channels: await Promise.all(attributes.channels.map(c => getVideosByChannel(c, res))),
+ tags: await Promise.all(attributes.tags.map(t => getVideosByTag(t, res)))
+ }
+
+ // Cleanup our object
+ for (const key of Object.keys(result)) {
+ result[key] = result[key].filter(v => v !== undefined)
+ }
+
+ return res.json(result)
+}
+
+async function buildSamples () {
+ const [ categories, channels, tags ] = await Promise.all([
+ VideoModel.getRandomFieldSamples('category', OVERVIEWS.VIDEOS.SAMPLE_THRESHOLD, OVERVIEWS.VIDEOS.SAMPLES_COUNT),
+ VideoModel.getRandomFieldSamples('channelId', OVERVIEWS.VIDEOS.SAMPLE_THRESHOLD ,OVERVIEWS.VIDEOS.SAMPLES_COUNT),
+ TagModel.getRandomSamples(OVERVIEWS.VIDEOS.SAMPLE_THRESHOLD, OVERVIEWS.VIDEOS.SAMPLES_COUNT)
+ ])
+
+ return { categories, channels, tags }
+}
+
+async function getVideosByTag (tag: string, res: express.Response) {
+ const videos = await getVideos(res, { tagsOneOf: [ tag ] })
+
+ if (videos.length === 0) return undefined
+
+ return {
+ tag,
+ videos
+ }
+}
+
+async function getVideosByCategory (category: number, res: express.Response) {
+ const videos = await getVideos(res, { categoryOneOf: [ category ] })
+
+ if (videos.length === 0) return undefined
+
+ return {
+ category: videos[0].category,
+ videos
+ }
+}
+
+async function getVideosByChannel (channelId: number, res: express.Response) {
+ const videos = await getVideos(res, { videoChannelId: channelId })
+
+ if (videos.length === 0) return undefined
+
+ return {
+ channel: videos[0].channel,
+ videos
+ }
+}
+
+async function getVideos (
+ res: express.Response,
+ where: { videoChannelId?: number, tagsOneOf?: string[], categoryOneOf?: number[] }
+) {
+ const { data } = await VideoModel.listForApi(Object.assign({
+ start: 0,
+ count: 10,
+ sort: '-createdAt',
+ includeLocalVideos: true,
+ nsfw: buildNSFWFilter(res),
+ withFiles: false
+ }, where))
+
+ return data.map(d => d.toFormattedJSON())
+}