<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;
use Illuminate\Support\Facades\DB;

return new class extends Migration
{
    /**
     * Run the migrations.
     */
    public function up(): void
    {
        // Clean up existing data and update status enum without touching old migrations
        
        // First backup existing data (optional)
        // DB::statement("CREATE TABLE mutations_backup AS SELECT * FROM mutations");
        
        // Update existing 'pending' status to 'sent'
        DB::table('mutations')
            ->where('status', 'pending')
            ->update(['status' => 'sent']);
            
        // Update existing 'completed' status to 'approved'  
        DB::table('mutations')
            ->where('status', 'completed')
            ->update(['status' => 'approved']);

        // Update the enum to only include valid statuses
        DB::statement("ALTER TABLE mutations MODIFY COLUMN status ENUM('sent', 'received', 'approved', 'rejected', 'cancelled') DEFAULT 'sent'");
        
        // Update any orphaned mutation_details that reference completed status
        DB::statement("
            UPDATE mutation_details md
            JOIN mutations m ON md.mutation_id = m.id 
            SET md.quantity_approved = md.quantity_requested
            WHERE m.status = 'approved' AND md.quantity_approved IS NULL
        ");
    }

    /**
     * Reverse the migrations.
     */
    public function down(): void
    {
        // Restore original enum (if needed)
        DB::statement("ALTER TABLE mutations MODIFY COLUMN status ENUM('pending', 'sent', 'received', 'approved', 'rejected', 'completed', 'cancelled') DEFAULT 'sent'");
    }
};