1 files changed, 72 insertions, 0 deletions
diff --git a/src/server/api/endpoints/aggregation/posts/reactions.ts b/src/server/api/endpoints/aggregation/posts/reactions.ts
new file mode 100644
index 0000000000..790b523be9
--- /dev/null
+++ b/src/server/api/endpoints/aggregation/posts/reactions.ts
@@ -0,0 +1,72 @@
+/**
+ * Module dependencies
+ */
+import $ from 'cafy';
+import Post from '../../../models/post';
+import Reaction from '../../../models/post-reaction';
+
+/**
+ * Aggregate reactions of a post
+ *
+ * @param {any} params
+ * @return {Promise<any>}
+ */
+module.exports = (params) => new Promise(async (res, rej) => {
+	// Get 'post_id' parameter
+	const [postId, postIdErr] = $(params.post_id).id().$;
+	if (postIdErr) return rej('invalid post_id param');
+
+	// Lookup post
+	const post = await Post.findOne({
+		_id: postId
+	});
+
+	if (post === null) {
+		return rej('post not found');
+	}
+
+	const startTime = new Date(new Date().setMonth(new Date().getMonth() - 1));
+
+	const reactions = await Reaction
+		.find({
+			post_id: post._id,
+			$or: [
+				{ deleted_at: { $exists: false } },
+				{ deleted_at: { $gt: startTime } }
+			]
+		}, {
+			sort: {
+				_id: -1
+			},
+			fields: {
+				_id: false,
+				post_id: false
+			}
+		});
+
+	const graph = [];
+
+	for (let i = 0; i < 30; i++) {
+		let day = new Date(new Date().setDate(new Date().getDate() - i));
+		day = new Date(day.setMilliseconds(999));
+		day = new Date(day.setSeconds(59));
+		day = new Date(day.setMinutes(59));
+		day = new Date(day.setHours(23));
+		// day = day.getTime();
+
+		const count = reactions.filter(r =>
+			r.created_at < day && (r.deleted_at == null || r.deleted_at > day)
+		).length;
+
+		graph.push({
+			date: {
+				year: day.getFullYear(),
+				month: day.getMonth() + 1, // In JavaScript, month is zero-based.
+				day: day.getDate()
+			},
+			count: count
+		});
+	}
+
+	res(graph);
+});