Initial commit :four_leaf_clover:

1 files changed, 78 insertions, 0 deletions

diff --git a/src/api/endpoints/posts/timeline.js b/src/api/endpoints/posts/timeline.js
new file mode 100644
index 0000000000..489542da71
--- /dev/null
+++ b/src/api/endpoints/posts/timeline.js
@@ -0,0 +1,78 @@
+'use strict';
+
+/**
+ * Module dependencies
+ */
+import * as mongo from 'mongodb';
+import Post from '../../models/post';
+import getFriends from '../../common/get-friends';
+import serialize from '../../serializers/post';
+
+/**
+ * Get timeline of myself
+ *
+ * @param {Object} params
+ * @param {Object} user
+ * @param {Object} app
+ * @return {Promise<object>}
+ */
+module.exports = (params, user, app) =>
+	new Promise(async (res, rej) =>
+{
+	// Get 'limit' parameter
+	let limit = params.limit;
+	if (limit !== undefined && limit !== null) {
+		limit = parseInt(limit, 10);
+
+		// From 1 to 100
+		if (!(1 <= limit && limit <= 100)) {
+			return rej('invalid limit range');
+		}
+	} else {
+		limit = 10;
+	}
+
+	const since = params.since_id || null;
+	const max = params.max_id || null;
+
+	// Check if both of since_id and max_id is specified
+	if (since !== null && max !== null) {
+		return rej('cannot set since_id and max_id');
+	}
+
+	// ID list of the user itself and other users who the user follows
+	const followingIds = await getFriends(user._id);
+
+	// Construct query
+	const sort = {
+		_id: -1
+	};
+	const query = {
+		user_id: {
+			$in: followingIds
+		}
+	};
+	if (since !== null) {
+		sort._id = 1;
+		query._id = {
+			$gt: new mongo.ObjectID(since)
+		};
+	} else if (max !== null) {
+		query._id = {
+			$lt: new mongo.ObjectID(max)
+		};
+	}
+
+	// Issue query
+	const timeline = await Post
+		.find(query, {}, {
+			limit: limit,
+			sort: sort
+		})
+		.toArray();
+
+	// Serialize
+	res(await Promise.all(timeline.map(async post =>
+		await serialize(post, user)
+	)));
+});