import rndstr from 'rndstr';
import $ from 'cafy';
import define from '../../define';
import { Apps } from '../../../../models';
import { genId } from '../../../../misc/gen-id';
import { unique } from '../../../../prelude/array';

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

	requireCredential: false,
	
	desc: {
		'ja-JP': 'アプリを作成します。',
		'en-US': 'Create a application.'
	},

	params: {
		name: {
			validator: $.str,
			desc: {
				'ja-JP': 'アプリの名前',
				'en-US': 'Name of application'
			}
		},

		description: {
			validator: $.str,
			desc: {
				'ja-JP': 'アプリの説明',
				'en-US': 'Description of application'
			}
		},

		permission: {
			validator: $.arr($.str).unique(),
			desc: {
				'ja-JP': 'このアプリに割り当てる権限（権限については"Permissions"を参照）',
				'en-US': 'Permissions assigned to this app (see "Permissions" for the permissions)'
			}
		},

		// TODO: Check it is valid url
		callbackUrl: {
			validator: $.optional.nullable.str,
			default: null as any,
			desc: {
				'ja-JP': 'アプリ認証時にコールバックするURL',
				'en-US': 'URL to call back at app authentication'
			}
		},
	},
	
	res: {
		type: 'object',
		properties: {
			id: {
				type: 'string',
				description: 'アプリケーションのID'
			},
			name: {
				type: 'string',
				description: 'アプリケーションの名前'
			},
			callbackUrl: {
				type: 'string',
				nullable: true,
				description: 'コールバックするURL'
			},
			secret: {
				type: 'string',
				description: 'アプリケーションのシークレットキー'
			}
		}
	}
};

export default define(meta, async (ps, user) => {
	// Generate secret
	const secret = rndstr('a-zA-Z0-9', 32);

	// for backward compatibility
	const permission = unique(ps.permission.map(v => v.replace(/^(.+)(\/|-)(read|write)$/, '$3:$1')));

	// Create account
	const app = await Apps.save({
		id: genId(),
		createdAt: new Date(),
		userId: user ? user.id : null,
		name: ps.name,
		description: ps.description,
		permission,
		callbackUrl: ps.callbackUrl,
		secret: secret
	});

	return await Apps.pack(app, null, {
		detail: true,
		includeSecret: true
	});
});