import { createServerClient } from '@supabase/ssr'
import { NextResponse, type NextRequest } from 'next/server'

export async function updateSession(request: NextRequest) {
    let supabaseResponse = NextResponse.next({
        request,
    })

    const supabase = createServerClient(
        process.env.NEXT_PUBLIC_SUPABASE_URL!,
        process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY!,
        {
            cookies: {
                getAll() {
                    return request.cookies.getAll()
                },
                setAll(cookiesToSet) {
                    cookiesToSet.forEach(({ name, value, options }) => request.cookies.set(name, value))
                    supabaseResponse = NextResponse.next({
                        request,
                    })
                    cookiesToSet.forEach(({ name, value, options }) =>
                        supabaseResponse.cookies.set(name, value, options)
                    )
                },
            },
        }
    )

    // IMPORTANT: Avoid writing any logic between createServerClient and
    // getUser(). A simple mistake can make it very hard to debug
    // issues with users being logged out.

    const {
        data: { user },
    } = await supabase.auth.getUser()

    if (
        !user &&
        !request.nextUrl.pathname.startsWith('/login') &&
        !request.nextUrl.pathname.startsWith('/auth') &&
        request.nextUrl.pathname.startsWith('/admin')
    ) {
        // no user, potentially respond by redirecting the user to the login page
        const url = request.nextUrl.clone()
        url.pathname = '/login'
        return NextResponse.redirect(url)
    }

    // IMPORTANT: You *must* return the supabaseResponse object as is. If you're creating a
    // new response object with NextResponse.next() make sure to:
    // 1. Pass the request in it, like so:
    //    const myNewResponse = NextResponse.next({ request })
    // 2. Copy over the cookies, like so:
    //    myNewResponse.cookies.setAll(supabaseResponse.cookies.getAll())
    // 3. Change the myNewResponse object to fit your needs, but make sure to return it!
    // If you don't, you can accidentally upend the user's session.

    return supabaseResponse
}