Merge pull request #854 from syuilo/bbs

Bbs

1 files changed, 79 insertions, 0 deletions

diff --git a/src/api/endpoints/channels/posts.ts b/src/api/endpoints/channels/posts.ts
new file mode 100644
index 0000000000..fa91fb93ee
--- /dev/null
+++ b/src/api/endpoints/channels/posts.ts
@@ -0,0 +1,79 @@
+/**
+ * Module dependencies
+ */
+import $ from 'cafy';
+import { default as Channel, IChannel } from '../../models/channel';
+import { default as Post, IPost } from '../../models/post';
+import serialize from '../../serializers/post';
+
+/**
+ * Show a posts of a channel
+ *
+ * @param {any} params
+ * @param {any} user
+ * @return {Promise<any>}
+ */
+module.exports = (params, user) => new Promise(async (res, rej) => {
+	// Get 'limit' parameter
+	const [limit = 1000, limitErr] = $(params.limit).optional.number().range(1, 1000).$;
+	if (limitErr) return rej('invalid limit param');
+
+	// Get 'since_id' parameter
+	const [sinceId, sinceIdErr] = $(params.since_id).optional.id().$;
+	if (sinceIdErr) return rej('invalid since_id param');
+
+	// Get 'max_id' parameter
+	const [maxId, maxIdErr] = $(params.max_id).optional.id().$;
+	if (maxIdErr) return rej('invalid max_id param');
+
+	// Check if both of since_id and max_id is specified
+	if (sinceId && maxId) {
+		return rej('cannot set since_id and max_id');
+	}
+
+	// Get 'channel_id' parameter
+	const [channelId, channelIdErr] = $(params.channel_id).id().$;
+	if (channelIdErr) return rej('invalid channel_id param');
+
+	// Fetch channel
+	const channel: IChannel = await Channel.findOne({
+		_id: channelId
+	});
+
+	if (channel === null) {
+		return rej('channel not found');
+	}
+
+	//#region Construct query
+	const sort = {
+		_id: -1
+	};
+
+	const query = {
+		channel_id: channel._id
+	} as any;
+
+	if (sinceId) {
+		sort._id = 1;
+		query._id = {
+			$gt: sinceId
+		};
+	} else if (maxId) {
+		query._id = {
+			$lt: maxId
+		};
+	}
+	//#endregion Construct query
+
+	// Issue query
+	const posts = await Post
+		.find(query, {
+			limit: limit,
+			sort: sort
+		});
+
+	// Serialize
+	res(await Promise.all(posts.map(async (post) =>
+		await serialize(post, user)
+	)));
+});