import $ from 'cafy';
import { ID } from '@/misc/cafy-id';
import * as ms from 'ms';
import create from '@/services/blocking/create';
import define from '../../define';
import { ApiError } from '../../error';
import { getUser } from '../../common/getters';
import { Blockings, NoteWatchings, Users } from '@/models/index';

export const meta = {
	tags: ['account'],

	limit: {
		duration: ms('1hour'),
		max: 100
	},

	requireCredential: true as const,

	kind: 'write:blocks',

	params: {
		userId: {
			validator: $.type(ID),
		}
	},

	errors: {
		noSuchUser: {
			message: 'No such user.',
			code: 'NO_SUCH_USER',
			id: '7cc4f851-e2f1-4621-9633-ec9e1d00c01e'
		},

		blockeeIsYourself: {
			message: 'Blockee is yourself.',
			code: 'BLOCKEE_IS_YOURSELF',
			id: '88b19138-f28d-42c0-8499-6a31bbd0fdc6'
		},

		alreadyBlocking: {
			message: 'You are already blocking that user.',
			code: 'ALREADY_BLOCKING',
			id: '787fed64-acb9-464a-82eb-afbd745b9614'
		},

		cannotBlockModerator: {
			message: 'Cannot block a moderator or an admin.',
			code: 'CANNOT_BLOCK_MODERATOR',
			id: '8544aaef-89fb-e470-9f6c-385d38b474f5'
		}
	},

	res: {
		type: 'object' as const,
		optional: false as const, nullable: false as const,
		ref: 'User'
	}
};

export default define(meta, async (ps, user) => {
	const blocker = await Users.findOneOrFail(user.id);

	// 自分自身
	if (user.id === ps.userId) {
		throw new ApiError(meta.errors.blockeeIsYourself);
	}

	// Get blockee
	const blockee = 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 blocking
	const exist = await Blockings.findOne({
		blockerId: blocker.id,
		blockeeId: blockee.id
	});

	if (exist != null) {
		throw new ApiError(meta.errors.alreadyBlocking);
	}

	try {
		await create(blocker, blockee);
	} catch (e) {
		if (e.id === 'e42b7890-5e4d-9d9c-d54b-cf4dd30adfb5') throw new ApiError(meta.errors.cannotBlockModerator);
		throw e;
	}

	NoteWatchings.delete({
		userId: blocker.id,
		noteUserId: blockee.id
	});

	return await Users.pack(blockee.id, blocker, {
		detail: true
	});
});