/**
 * Alternative registration endpoint using Supabase Auth
 * This auto-confirms the email to bypass email confirmation requirement
 * 
 * NOTE: This requires SUPABASE_SERVICE_ROLE_KEY in environment variables
 * This should only be used if you need Supabase Auth instead of custom users table
 */

import { NextRequest, NextResponse } from 'next/server'
import { createClient } from '@supabase/supabase-js'

const supabaseUrl = process.env.NEXT_PUBLIC_SUPABASE_URL
const serviceRoleKey = process.env.SUPABASE_SERVICE_ROLE_KEY

// Create admin client with service role key
const supabaseAdmin = serviceRoleKey && supabaseUrl
  ? createClient(supabaseUrl, serviceRoleKey, {
      auth: {
        autoRefreshToken: false,
        persistSession: false
      }
    })
  : null

export async function POST(request: NextRequest) {
  try {
    if (!supabaseAdmin) {
      return NextResponse.json(
        { error: 'Supabase service role key not configured. Use custom authentication instead.' },
        { status: 500 }
      )
    }

    const { email, password, username } = await request.json()

    if (!email || !password) {
      return NextResponse.json(
        { error: 'Email and password are required' },
        { status: 400 }
      )
    }

    // Create user with auto-confirmed email
    const { data: authData, error: authError } = await supabaseAdmin.auth.admin.createUser({
      email: email.trim().toLowerCase(),
      password,
      email_confirm: true, // Auto-confirm email to bypass confirmation requirement
      user_metadata: {
        username: username || email.split('@')[0]
      }
    })

    if (authError) {
      console.error('Supabase auth error:', authError)
      return NextResponse.json(
        { error: authError.message },
        { status: 400 }
      )
    }

    if (!authData.user) {
      return NextResponse.json(
        { error: 'Failed to create user' },
        { status: 500 }
      )
    }

    return NextResponse.json({
      success: true,
      user: {
        id: authData.user.id,
        email: authData.user.email,
        email_confirmed: true
      }
    }, { status: 201 })

  } catch (error) {
    console.error('Registration error:', error)
    return NextResponse.json(
      { error: 'Internal server error' },
      { status: 500 }
    )
  }
}