<?php

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

return new class extends Migration
{
    public function up(): void
    {
        Schema::create('letters', function (Blueprint $table) {
            $table->id();
            $table->foreignId('tenant_id')->constrained()->cascadeOnDelete();
            $table->foreignId('project_id')->nullable()->constrained()->nullOnDelete();
            $table->enum('type', ['incoming', 'outgoing']);
            $table->string('subject');
            $table->text('content')->nullable();
            $table->string('sender');
            $table->string('recipient');
            $table->date('letter_date');
            $table->string('reference_number')->nullable();
            $table->foreignId('parent_letter_id')->nullable()->constrained('letters')->nullOnDelete();
            $table->enum('status', ['draft', 'sent', 'received', 'archived'])->default('draft');
            $table->timestamps();

            $table->index('tenant_id');
            $table->index('project_id');
            $table->index('type');
            $table->index('status');
            $table->index('letter_date');
        });
    }

    public function down(): void
    {
        Schema::dropIfExists('letters');
    }
};