import 'reflect-metadata'
import { StatusCodes } from '$lib/constants/status-codes'
import type { ApiRoutes } from '$lib/server/api'
import { parseApiResponse } from '$lib/utils/api'
import { type Handle, redirect } from '@sveltejs/kit'
import { sequence } from '@sveltejs/kit/hooks'
import { hc } from 'hono/client'

const apiClient: Handle = async ({ event, resolve }) => {
	/* ------------------------------ Register api ------------------------------ */
	const { api } = hc<ApiRoutes>('/', {
		fetch: event.fetch,
		headers: {
			'x-forwarded-for': event.url.host.includes('sveltekit-prerender') ? '127.0.0.1' : event.getClientAddress(),
			host: event.request.headers.get('host') || '',
		},
	})

	/* ----------------------------- Auth functions ----------------------------- */
	async function getAuthedUser() {
		const { data } = await api.user.$get().then(parseApiResponse)
		return data?.user
	}

	async function getAuthedUserOrThrow() {
		const { data } = await api.user.$get().then(parseApiResponse)
		if (!data || !data.user) throw redirect(StatusCodes.TEMPORARY_REDIRECT, '/')
		return data?.user
	}

	/* ------------------------------ Set contexts ------------------------------ */
	event.locals.api = api
	event.locals.parseApiResponse = parseApiResponse
	event.locals.getAuthedUser = getAuthedUser
	event.locals.getAuthedUserOrThrow = getAuthedUserOrThrow

	/* ----------------------------- Return response ---------------------------- */
	const response = await resolve(event)
	return response
}

export const handle: Handle = sequence(apiClient)