From b3f42e62af698a67c2250533c437569559f1fdf9 Mon Sep 17 00:00:00 2001
From: syuilo <syuilotan@yahoo.co.jp>
Date: Thu, 29 Dec 2016 07:49:51 +0900
Subject: Initial commit :four_leaf_clover:

---
 src/api/endpoints/posts/replies.js | 73 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 73 insertions(+)
 create mode 100644 src/api/endpoints/posts/replies.js

(limited to 'src/api/endpoints/posts/replies.js')

diff --git a/src/api/endpoints/posts/replies.js b/src/api/endpoints/posts/replies.js
new file mode 100644
index 0000000000..5eab6f896f
--- /dev/null
+++ b/src/api/endpoints/posts/replies.js
@@ -0,0 +1,73 @@
+'use strict';
+
+/**
+ * Module dependencies
+ */
+import * as mongo from 'mongodb';
+import Post from '../../models/post';
+import serialize from '../../serializers/post';
+
+/**
+ * Show a replies of a post
+ *
+ * @param {Object} params
+ * @param {Object} user
+ * @return {Promise<object>}
+ */
+module.exports = (params, user) =>
+	new Promise(async (res, rej) =>
+{
+	// Get 'post_id' parameter
+	const postId = params.post_id;
+	if (postId === undefined || postId === null) {
+		return rej('post_id is required');
+	}
+
+	// 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;
+	}
+
+	// Get 'offset' parameter
+	let offset = params.offset;
+	if (offset !== undefined && offset !== null) {
+		offset = parseInt(offset, 10);
+	} else {
+		offset = 0;
+	}
+
+	// Get 'sort' parameter
+	let sort = params.sort || 'desc';
+
+	// Lookup post
+	const post = await Post.findOne({
+		_id: new mongo.ObjectID(postId)
+	});
+
+	if (post === null) {
+		return rej('post not found', 'POST_NOT_FOUND');
+	}
+
+	// Issue query
+	const replies = await Post
+		.find({ reply_to_id: post._id }, {}, {
+			limit: limit,
+			skip: offset,
+			sort: {
+				_id: sort == 'asc' ? 1 : -1
+			}
+		})
+		.toArray();
+
+	// Serialize
+	res(await Promise.all(replies.map(async post =>
+		await serialize(post, user))));
+});
-- 
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