<?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('columns', function (Blueprint $table) {
            $table->id();
            $table->foreignId('table_id')->constrained('tables')->cascadeOnDelete();
            $table->string('column_name');
            $table->string('data_type');
            $table->string('udt_name')->nullable();
            $table->integer('ordinal_position');
            $table->boolean('is_nullable')->default(true);
            $table->string('column_default')->nullable();
            $table->integer('character_maximum_length')->nullable();
            $table->integer('numeric_precision')->nullable();
            $table->integer('numeric_scale')->nullable();
            $table->string('datetime_precision')->nullable();
            $table->text('comment')->nullable();
            $table->boolean('is_primary_key')->default(false);
            $table->boolean('is_foreign_key')->default(false);
            $table->boolean('is_indexed')->default(false);
            // Column mapping for target database
            $table->string('target_column_name')->nullable();
            $table->string('target_data_type')->nullable();
            $table->boolean('exclude_from_migration')->default(false);
            $table->timestamps();

            $table->unique(['table_id', 'column_name'], 'unique_column');
        });
    }

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