From b4340b1d91a6fc1679c3cb891ea800e1b491109c Mon Sep 17 00:00:00 2001
From: syuilo <syuilotan@yahoo.co.jp>
Date: Tue, 31 Oct 2017 22:09:09 +0900
Subject: [PATCH] wip

---
 src/api/endpoints/posts/create.ts | 47 +++++++++++++++++++++++++++----
 src/api/models/post.ts            |  1 +
 2 files changed, 42 insertions(+), 6 deletions(-)

diff --git a/src/api/endpoints/posts/create.ts b/src/api/endpoints/posts/create.ts
index 805dba7f8..42a55f850 100644
--- a/src/api/endpoints/posts/create.ts
+++ b/src/api/endpoints/posts/create.ts
@@ -4,9 +4,9 @@
 import $ from 'cafy';
 import deepEqual = require('deep-equal');
 import parse from '../../common/text';
-import Post from '../../models/post';
-import { isValidText } from '../../models/post';
+import { default as Post, IPost, isValidText } from '../../models/post';
 import { default as User, IUser } from '../../models/user';
+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';
@@ -62,7 +62,8 @@ module.exports = (params, user: IUser, app) => new Promise(async (res, rej) => {
 	const [repostId, repostIdErr] = $(params.repost_id).optional.id().$;
 	if (repostIdErr) return rej('invalid repost_id');
 
-	let repost = null;
+	let repost: IPost = null;
+	let isQuote = false;
 	if (repostId !== undefined) {
 		// Fetch repost to post
 		repost = await Post.findOne({
@@ -84,18 +85,20 @@ module.exports = (params, user: IUser, app) => new Promise(async (res, rej) => {
 			}
 		});
 
+		isQuote = text != null || files != null;
+
 		// 直近と同じRepost対象かつ引用じゃなかったらエラー
 		if (latestPost &&
 			latestPost.repost_id &&
 			latestPost.repost_id.equals(repost._id) &&
-			text === undefined && files === null) {
+			!isQuote) {
 			return rej('cannot repost same post that already reposted in your latest post');
 		}
 
 		// 直近がRepost対象かつ引用じゃなかったらエラー
 		if (latestPost &&
 			latestPost._id.equals(repost._id) &&
-			text === undefined && files === null) {
+			!isQuote) {
 			return rej('cannot repost your latest post');
 		}
 	}
@@ -104,7 +107,7 @@ module.exports = (params, user: IUser, app) => new Promise(async (res, rej) => {
 	const [inReplyToPostId, inReplyToPostIdErr] = $(params.reply_to_id).optional.id().$;
 	if (inReplyToPostIdErr) return rej('invalid in_reply_to_post_id');
 
-	let inReplyToPost = null;
+	let inReplyToPost: IPost = null;
 	if (inReplyToPostId !== undefined) {
 		// Fetch reply
 		inReplyToPost = await Post.findOne({
@@ -121,6 +124,37 @@ module.exports = (params, user: IUser, app) => new Promise(async (res, rej) => {
 		}
 	}
 
+	// Get 'channel_id' parameter
+	const [channelId, channelIdErr] = $(params.channel_id).optional.id().$;
+	if (channelIdErr) return rej('invalid channel_id');
+
+	let channel: IChannel = null;
+	if (channelId !== undefined) {
+		// Fetch channel
+		channel = await Channel.findOne({
+			_id: channelId
+		});
+
+		if (channel === null) {
+			return rej('channel not found');
+		}
+
+		// 返信対象の投稿がこのチャンネルじゃなかったらダメ
+		if (inReplyToPost && !channelId.equals(inReplyToPost.channel_id)) {
+			return rej('チャンネル内部からチャンネル外部の投稿に返信することはできません');
+		}
+
+		// Repost対象の投稿がこのチャンネルじゃなかったらダメ
+		if (repost && !channelId.equals(repost.channel_id)) {
+			return rej('チャンネル内部からチャンネル外部の投稿をRepostすることはできません');
+		}
+
+		// 引用ではないRepostはダメ
+		if (repost && !isQuote) {
+			return rej('チャンネル内部では引用ではないRepostをすることはできません');
+		}
+	}
+
 	// Get 'poll' parameter
 	const [poll, pollErr] = $(params.poll).optional.strict.object()
 		.have('choices', $().array('string')
@@ -164,6 +198,7 @@ module.exports = (params, user: IUser, app) => new Promise(async (res, rej) => {
 	// 投稿を作成
 	const post = await Post.insert({
 		created_at: new Date(),
+		channel_id: channel ? channel._id : undefined,
 		media_ids: files ? files.map(file => file._id) : undefined,
 		reply_to_id: inReplyToPost ? inReplyToPost._id : undefined,
 		repost_id: repost ? repost._id : undefined,
diff --git a/src/api/models/post.ts b/src/api/models/post.ts
index 8b9f7f5ef..fe07dcb0b 100644
--- a/src/api/models/post.ts
+++ b/src/api/models/post.ts
@@ -10,6 +10,7 @@ export function isValidText(text: string): boolean {
 
 export type IPost = {
 	_id: mongo.ObjectID;
+	channel_id: mongo.ObjectID;
 	created_at: Date;
 	media_ids: mongo.ObjectID[];
 	reply_to_id: mongo.ObjectID;