import { sign } from 'jsonwebtoken';
import { syllableRequired } from '../../middlewares/index.mjs.mjs';
import { ACCOUNT_TYPE, Account } from './model.mjs';
import * as config from '../../config.mjs';

/** @typedef {import('koa').Context} Context */
/** @typedef {import('koa').Next} Next */

export const login_view = [
	syllableRequired('handle', 'string'),
	syllableRequired('passwd', 'string'),

	/**
	 * @param {Context} ctx 
	 * @param {Next} next 
	 */
	async function(ctx, next) {
		/** @type {{handle: string, passwd: string}} */
		const {handle, passwd} = ctx.request.body;
		const account = await Account.loadByHandle(handle);
		if (account == null || !account.checkPassword(passwd)) {
			ctx.status = 400; // Bad Request.
			ctx.body = { error: 'Authentication failed: handle or password is incorrect.' };
		} else if (!account.canLogin()) {
			ctx.status = 400; // Bad Request.
			ctx.body = { error: 'Your account is banned or restricted.' };
		} else {
			const token = sign({
				uid: account.uid.toString(),
				handle: account.handle,
				auth_step: 'done',
			}, config, { expiresIn: config.jwt_expire });
			ctx.status = 200;
			ctx.body = { uid: account.uid.toString(), token: token, auth_step: 'done' };
		}
	}
];

export const register_view = [
	syllableRequired('handle', 'string'),
	syllableRequired('name', 'string'),
	syllableRequired('passwd', 'string'),
	/**
	 * @param {Context} ctx 
	 * @param {Next} next 
	 */
	async function(ctx, next) {
		/** @type {{handle: string, name: string, passwd: string}} */
		const {handle, name, passwd} = ctx.request.body;
		Account.create({
			handle, name,
			type: ACCOUNT_TYPE.normal,
			plaintext_password: passwd,
		});
	}
];