import { NextRequest, NextResponse } from 'next/server'
import { auth } from '@/auth'
import prisma from '@/lib/prisma'
import { createMobileToken } from '@/lib/mobile-auth'

// Appelé après le flux Google OAuth — génère un token mobile et redirige vers l'app native
export async function GET(req: NextRequest) {
  try {
    const session = await auth()

    if (!session?.user?.email) {
      return NextResponse.redirect(`memento://auth?error=unauthorized`)
    }

    const user = await prisma.user.findUnique({
      where: { email: session.user.email },
      select: { id: true, name: true, email: true, subscription: { select: { tier: true } } },
    })

    if (!user) {
      return NextResponse.redirect(`memento://auth?error=not_found`)
    }

    const token = createMobileToken(user.id)
    const params = new URLSearchParams({
      token,
      id: user.id,
      name: user.name ?? '',
      email: user.email ?? '',
      tier: user.subscription?.tier ?? 'FREE',
    })

    return NextResponse.redirect(`memento://auth?${params.toString()}`)
  } catch (e) {
    console.error('[mobile/auth/google-callback]', e)
    return NextResponse.redirect(`memento://auth?error=server_error`)
  }
}