1 files changed, 100 insertions, 0 deletions
diff --git a/packages/backend/src/server/api/endpoints/following/create.ts b/packages/backend/src/server/api/endpoints/following/create.ts
new file mode 100644
index 0000000000..92e86bf6b2
--- /dev/null
+++ b/packages/backend/src/server/api/endpoints/following/create.ts
@@ -0,0 +1,100 @@
+import $ from 'cafy';
+import { ID } from '@/misc/cafy-id';
+import ms from 'ms';
+import create from '@/services/following/create';
+import define from '../../define';
+import { ApiError } from '../../error';
+import { getUser } from '../../common/getters';
+import { Followings, Users } from '@/models/index';
+
+export const meta = {
+	tags: ['following', 'users'],
+
+	limit: {
+		duration: ms('1hour'),
+		max: 100
+	},
+
+	requireCredential: true as const,
+
+	kind: 'write:following',
+
+	params: {
+		userId: {
+			validator: $.type(ID),
+		}
+	},
+
+	errors: {
+		noSuchUser: {
+			message: 'No such user.',
+			code: 'NO_SUCH_USER',
+			id: 'fcd2eef9-a9b2-4c4f-8624-038099e90aa5'
+		},
+
+		followeeIsYourself: {
+			message: 'Followee is yourself.',
+			code: 'FOLLOWEE_IS_YOURSELF',
+			id: '26fbe7bb-a331-4857-af17-205b426669a9'
+		},
+
+		alreadyFollowing: {
+			message: 'You are already following that user.',
+			code: 'ALREADY_FOLLOWING',
+			id: '35387507-38c7-4cb9-9197-300b93783fa0'
+		},
+
+		blocking: {
+			message: 'You are blocking that user.',
+			code: 'BLOCKING',
+			id: '4e2206ec-aa4f-4960-b865-6c23ac38e2d9'
+		},
+
+		blocked: {
+			message: 'You are blocked by that user.',
+			code: 'BLOCKED',
+			id: 'c4ab57cc-4e41-45e9-bfd9-584f61e35ce0'
+		},
+	},
+
+	res: {
+		type: 'object' as const,
+		optional: false as const, nullable: false as const,
+		ref: 'User'
+	}
+};
+
+export default define(meta, async (ps, user) => {
+	const follower = user;
+
+	// 自分自身
+	if (user.id === ps.userId) {
+		throw new ApiError(meta.errors.followeeIsYourself);
+	}
+
+	// Get followee
+	const followee = await getUser(ps.userId).catch(e => {
+		if (e.id === '15348ddd-432d-49c2-8a5a-8069753becff') throw new ApiError(meta.errors.noSuchUser);
+		throw e;
+	});
+
+	// Check if already following
+	const exist = await Followings.findOne({
+		followerId: follower.id,
+		followeeId: followee.id
+	});
+
+	if (exist != null) {
+		throw new ApiError(meta.errors.alreadyFollowing);
+	}
+
+	try {
+		await create(follower, followee);
+	} catch (e) {
+		if (e.id === '710e8fb0-b8c3-4922-be49-d5d93d8e6a6e') throw new ApiError(meta.errors.blocking);
+		if (e.id === '3338392a-f764-498d-8855-db939dcf8c48') throw new ApiError(meta.errors.blocked);
+		throw e;
+	}
+
+	return await Users.pack(followee.id, user);
+});