Implement Channel Watching

src/api/endpoints/posts/create.ts

@@ -10,6 +10,7 @@ import { default as Channel, IChannel } from '../../models/channel';
 import Following from '../../models/following';
 import DriveFile from '../../models/drive-file';
 import Watching from '../../models/post-watching';
+import ChannelWatching from '../../models/channel-watching';
 import serialize from '../../serializers/post';
 import notify from '../../common/notify';
 import watch from '../../common/watch-post';
@@ -249,26 +250,11 @@ module.exports = (params, user: IUser, app) => new Promise(async (res, rej) => {
 		}
 	}
 
-	// TODO
+	// タイムラインへの投稿
 	if (!channel) {
 		// Publish event to myself's stream
 		event(user._id, 'post', postObj);
-	}
 
-	if (channel) {
-		// Increment channel index(posts count)
-		Channel.update({ _id: channel._id }, {
-			$inc: {
-				index: 1
-			}
-		});
-
-		// Publish event to channel
-		publishChannelStream(channel._id, 'post', postObj);
-	}
-
-	// TODO
-	if (!channel) {
 		// Fetch all followers
 		const followers = await Following
 			.find({
@@ -285,6 +271,31 @@ module.exports = (params, user: IUser, app) => new Promise(async (res, rej) => {
 			event(following.follower_id, 'post', postObj));
 	}
 
+	// チャンネルへの投稿
+	if (channel) {
+		// Increment channel index(posts count)
+		Channel.update({ _id: channel._id }, {
+			$inc: {
+				index: 1
+			}
+		});
+
+		// Publish event to channel
+		publishChannelStream(channel._id, 'post', postObj);
+
+		// Get channel watchers
+		const watches = await ChannelWatching.find({
+			channel_id: channel._id,
+			// 削除されたドキュメントは除く
+			deleted_at: { $exists: false }
+		});
+
+		// チャンネルの視聴者(のタイムライン)に配信
+		watches.forEach(w => {
+			event(w.user_id, 'post', postObj);
+		});
+	}
+
 	// Increment my posts count
 	User.update({ _id: user._id }, {
 		$inc: {

src/api/endpoints/posts/timeline.ts

@@ -3,6 +3,7 @@
  */
 import $ from 'cafy';
 import Post from '../../models/post';
+import ChannelWatching from '../../models/channel-watching';
 import getFriends from '../../common/get-friends';
 import serialize from '../../serializers/post';
 
@@ -32,26 +33,43 @@ module.exports = (params, user, app) => new Promise(async (res, rej) => {
 		return rej('cannot set since_id and max_id');
 	}
 
-	// ID list of the user $self and other users who the user follows
+	// ID list of the user itself and other users who the user follows
 	const followingIds = await getFriends(user._id);
 
-	// Construct query
+	// Watchしているチャンネルを取得
+	const watches = await ChannelWatching.find({
+		user_id: user._id,
+		// 削除されたドキュメントは除く
+		deleted_at: { $exists: false }
+	});
+
+	//#region Construct query
 	const sort = {
 		_id: -1
 	};
+
 	const query = {
-		user_id: {
-			$in: followingIds
-		},
-		// TODO
 		$or: [{
-			channel_id: {
-				$exists: false
-			}
+			// フォローしている人のタイムラインへの投稿
+			user_id: {
+				$in: followingIds
+			},
+			// 「タイムラインへの」投稿に限定するためにチャンネルが指定されていないもののみに限る
+			$or: [{
+				channel_id: {
+					$exists: false
+				}
+			}, {
+				channel_id: null
+			}]
 		}, {
-			channel_id: null
+			// Watchしているチャンネルへの投稿
+			channel_id: {
+				$in: watches.map(w => w.channel_id)
+			}
 		}]
 	} as any;
+
 	if (sinceId) {
 		sort._id = 1;
 		query._id = {
@@ -62,6 +80,7 @@ module.exports = (params, user, app) => new Promise(async (res, rej) => {
 			$lt: maxId
 		};
 	}
+	//#endregion
 
 	// Issue query
 	const timeline = await Post