import { dev } from '$app/environment';
import { API_URL } from '$env/static/private';

import { fail, redirect, type Actions } from '@sveltejs/kit';

import type { PageServerLoad } from './$types';

import { zod } from 'sveltekit-superforms/adapters';
import { setError, superValidate } from 'sveltekit-superforms/server';

import { registerConfirmationSchema, registerSchema } from '$lib/validations/auth';

export const load: PageServerLoad = async ({ locals: { user } }) => {
	if (user) redirect(302, '/');

	const registerForm = await superValidate(zod(registerSchema));
	const registerConfirmationForm = await superValidate(zod(registerConfirmationSchema));

	return {
		title: 'Inscription',
		registerForm,
		registerConfirmationForm
	};
}

export const actions: Actions = {
	register: async ({ request }) => {

		const form = await superValidate(request, zod(registerSchema));

		if (!form.valid) {
			return fail(400, { form });
		}

		const res = await fetch(`${API_URL}/register`, {
			method: 'POST',
			body: JSON.stringify({
				email: form.data.email
			})
		});

		if (!res.ok) {
			if (res.status === 400) {
				const { email_valid, username_valid } = await res.json();
				if (!email_valid) return setError(form, 'email', 'Un compte avec cette adresse email existe déjà');
				if (!username_valid) return setError(form, 'pseudo', 'Ce pseudo est déjà utilisé');
			}

			return setError(form, 'email', "Une erreur est survenue lors de l'inscription");
		}

		return {
			form
		};
	},
	confirmation: async ({ request, cookies, url: { searchParams } }) => {
		const form = await superValidate(request, zod(registerConfirmationSchema));

		if (!form.valid) {
			return fail(400, { form });
		}

		const res = await fetch(`${API_URL}/confirmation`, {
			method: 'POST',
			body: JSON.stringify({
				firstname: form.data.firstname,
				lastname: form.data.lastname,
				pseudo: form.data.pseudo,
				email: form.data.email,
				passwd: form.data.passwd,
				code: parseInt(form.data.code),
			})
		});

		if (!res.ok) {
			if (res.status === 400) {
				const { email_valid, username_valid } = await res.json();
				if (!email_valid) return setError(form, 'email', 'Un compte avec cette adresse email existe déjà');
				if (!username_valid) return setError(form, 'pseudo', "Ce nom d'utilisateur est déjà utilisé");
			}
			return setError(form, 'code', "Une erreur est survenue lors de la confirmation");
		}

		const token = res.headers.get('Authorization')?.split('Bearer ').pop();

		if (!token) {
			return setError(form, 'code', "Une erreur est survenue, veuillez réessayer plus tard");
		}

		cookies.set('session', token, {
			path: '/',
			secure: !dev,
			sameSite: 'strict',
		});

		const redirectTo = searchParams.get('redirectTo');

		if (redirectTo)
			redirect(302, `/${redirectTo.slice(1)}`);

		redirect(302, '/');
	}
}