Added "total views" in the my channels list (#5007)

* Added "total views" in the my channels list

Implements https://github.com/Chocobozzz/PeerTube/issues/4331

* Fix lint

* applied suggested change

* updated openAPI spec for the use "withStats" when getting video channels

* applied code change

* removed GROUP BY in query

* Fixed test

2 files changed, 32 insertions, 0 deletions

diff --git a/server/models/video/video-channel.ts b/server/models/video/video-channel.ts
index d6dd1b8bb..91dafbcf1 100644
--- a/server/models/video/video-channel.ts
+++ b/server/models/video/video-channel.ts
@@ -311,6 +311,16 @@ export type SummaryOptions = {
               ')'
             ),
             'viewsPerDay'
+          ],
+          [
+            literal(
+              '(' +
+              'SELECT COALESCE(SUM("video".views), 0) AS totalViews ' +
+              'FROM "video" ' +
+              'WHERE "video"."channelId" = "VideoChannelModel"."id"' +
+              ')'
+            ),
+            'totalViews'
           ]
         ]
       }
@@ -766,6 +776,8 @@ ON              "Account->Actor"."serverId" = "Account->Actor->Server"."id"`
         })
     }
 
+    const totalViews = this.get('totalViews') as number
+
     const actor = this.Actor.toFormattedJSON()
     const videoChannel = {
       id: this.id,
@@ -779,6 +791,7 @@ ON              "Account->Actor"."serverId" = "Account->Actor->Server"."id"`
 
       videosCount,
       viewsPerDay,
+      totalViews,
 
       avatars: actor.avatars,
 
diff --git a/server/tests/api/videos/video-channels.ts b/server/tests/api/videos/video-channels.ts
index 6f495c42d..42e0cf431 100644
--- a/server/tests/api/videos/video-channels.ts
+++ b/server/tests/api/videos/video-channels.ts
@@ -478,6 +478,25 @@ describe('Test video channels', function () {
     }
   })
 
+  it('Should report correct total views count', async function () {
+    // check if there's the property
+    {
+      const { data } = await servers[0].channels.listByAccount({ accountName, withStats: true })
+
+      for (const channel of data) {
+        expect(channel).to.haveOwnProperty('totalViews')
+        expect(channel.totalViews).to.be.a('number')
+      }
+    }
+
+    // Check if the totalViews count can be updated
+    {
+      const { data } = await servers[0].channels.listByAccount({ accountName, withStats: true })
+      const channelWithView = data.find(channel => channel.id === servers[0].store.channel.id)
+      expect(channelWithView.totalViews).to.equal(2)
+    }
+  })
+
   it('Should report correct videos count', async function () {
     const { data } = await servers[0].channels.listByAccount({ accountName, withStats: true })