Init commit

server/core/lib/rate.ts

@@ -0,0 +1,64 @@
+import { VIDEO_RATE_TYPES } from '@server/initializers/constants.js'
+import { sequelizeTypescript } from '@server/initializers/database.js'
+import { AccountVideoRateModel } from '@server/models/account/account-video-rate.js'
+import { AccountModel } from '@server/models/account/account.js'
+import { getLocalRateUrl, sendVideoRateChange } from './activitypub/video-rates.js'
+import { MAccountId, MAccountUrl, MVideoFullLight } from '@server/types/models/index.js'
+import { UserVideoRateType } from '@peertube/peertube-models'
+
+export async function userRateVideo (options: {
+  rateType: UserVideoRateType
+  account: MAccountUrl & MAccountId
+  video: MVideoFullLight
+}) {
+  const { account, rateType, video } = options
+
+  await sequelizeTypescript.transaction(async t => {
+    const sequelizeOptions = { transaction: t }
+
+    const accountInstance = await AccountModel.load(account.id, t)
+    const previousRate = await AccountVideoRateModel.load(accountInstance.id, video.id, t)
+
+    // Same rate, nothing do to
+    if (rateType === 'none' && !previousRate || previousRate?.type === rateType) return
+
+    let likesToIncrement = 0
+    let dislikesToIncrement = 0
+
+    if (rateType === VIDEO_RATE_TYPES.LIKE) likesToIncrement++
+    else if (rateType === VIDEO_RATE_TYPES.DISLIKE) dislikesToIncrement++
+
+    // There was a previous rate, update it
+    if (previousRate) {
+      // We will remove the previous rate, so we will need to update the video count attribute
+      if (previousRate.type === 'like') likesToIncrement--
+      else if (previousRate.type === 'dislike') dislikesToIncrement--
+
+      if (rateType === 'none') { // Destroy previous rate
+        await previousRate.destroy(sequelizeOptions)
+      } else { // Update previous rate
+        previousRate.type = rateType
+        previousRate.url = getLocalRateUrl(rateType, account.Actor, video)
+        await previousRate.save(sequelizeOptions)
+      }
+    } else if (rateType !== 'none') { // There was not a previous rate, insert a new one if there is a rate
+      const query = {
+        accountId: accountInstance.id,
+        videoId: video.id,
+        type: rateType,
+        url: getLocalRateUrl(rateType, account.Actor, video)
+      }
+
+      await AccountVideoRateModel.create(query, sequelizeOptions)
+    }
+
+    const incrementQuery = {
+      likes: likesToIncrement,
+      dislikes: dislikesToIncrement
+    }
+
+    await video.increment(incrementQuery, sequelizeOptions)
+
+    await sendVideoRateChange(accountInstance, video, likesToIncrement, dislikesToIncrement, t)
+  })
+}