Improve error handling of API (#4345)

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* Update attached_notes.ts

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* Refactor

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* Update call.ts

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* ✌️

* Fix

src/server/api/endpoints/users/notes.ts

@@ -1,11 +1,10 @@
 import $ from 'cafy';
 import ID, { transform } from '../../../../misc/cafy-id';
-import getHostLower from '../../common/get-host-lower';
 import Note, { packMany } from '../../../../models/note';
 import User from '../../../../models/user';
 import define from '../../define';
-import { countIf } from '../../../../prelude/array';
 import Following from '../../../../models/following';
+import { ApiError } from '../../error';
 
 export const meta = {
 	desc: {
@@ -14,7 +13,7 @@ export const meta = {
 
 	params: {
 		userId: {
-			validator: $.optional.type(ID),
+			validator: $.type(ID),
 			transform: transform,
 			desc: {
 				'ja-JP': '対象のユーザーのID',
@@ -22,17 +21,6 @@ export const meta = {
 			}
 		},
 
-		username: {
-			validator: $.optional.str,
-			desc: {
-				'ja-JP': 'ユーザー名'
-			}
-		},
-
-		host: {
-			validator: $.optional.nullable.str,
-		},
-
 		includeReplies: {
 			validator: $.optional.bool,
 			default: true,
@@ -134,32 +122,27 @@ export const meta = {
 				'ja-JP': 'true にすると、NSFW指定されたファイルを除外します(fileTypeが指定されている場合のみ有効)'
 			}
 		},
+	},
+
+	errors: {
+		noSuchUser: {
+			message: 'No such user.',
+			code: 'NO_SUCH_USER',
+			id: '27e494ba-2ac2-48e8-893b-10d4d8c2387b'
+		}
 	}
 };
 
-export default define(meta, (ps, me) => new Promise(async (res, rej) => {
-	if (ps.userId === undefined && ps.username === undefined) {
-		return rej('userId or username is required');
-	}
-
-	// Check if only one of sinceId, untilId, sinceDate, untilDate specified
-	if (countIf(x => x != null, [ps.sinceId, ps.untilId, ps.sinceDate, ps.untilDate]) > 1) {
-		throw 'only one of sinceId, untilId, sinceDate, untilDate can be specified';
-	}
-
-	const q = ps.userId != null
-		? { _id: ps.userId }
-		: { usernameLower: ps.username.toLowerCase(), host: getHostLower(ps.host) } ;
-
+export default define(meta, async (ps, me) => {
 	// Lookup user
-	const user = await User.findOne(q, {
+	const user = await User.findOne({ _id: ps.userId }, {
 		fields: {
 			_id: true
 		}
 	});
 
 	if (user === null) {
-		return rej('user not found');
+		throw new ApiError(meta.errors.noSuchUser);
 	}
 
 	const isFollowing = me == null ? false : ((await Following.findOne({
@@ -259,13 +242,10 @@ export default define(meta, (ps, me) => new Promise(async (res, rej) => {
 	}
 	//#endregion
 
-	// Issue query
-	const notes = await Note
-		.find(query, {
-			limit: ps.limit,
-			sort: sort
-		});
+	const notes = await Note.find(query, {
+		limit: ps.limit,
+		sort: sort
+	});
 
-	// Serialize
-	res(await packMany(notes, me));
-}));
+	return await packMany(notes, me);
+});