<?php

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

return new class extends Migration
{
    public function up(): void
    {
        Schema::create('warehouse_reservations', function (Blueprint $table) {
            $table->id();
            $table->foreignId('tenant_id')->constrained()->restrictOnDelete();
            $table->foreignId('warehouse_request_id')->constrained()->restrictOnDelete();
            $table->unsignedInteger('line_index');
            $table->foreignId('stock_item_id')->constrained()->restrictOnDelete();
            $table->foreignId('warehouse_id')->constrained()->restrictOnDelete();
            $table->foreignId('authorization_event_id')->constrained('warehouse_request_events')->restrictOnDelete();
            $table->foreignId('actor_id')->constrained('users')->restrictOnDelete();
            $table->uuid('command_key');
            $table->string('kind');
            $table->bigInteger('quantity_milli');
            $table->timestampTz('created_at');
            $table->unique(['warehouse_request_id', 'line_index', 'command_key', 'kind'], 'warehouse_reservation_command_unique');
            $table->index(['tenant_id', 'stock_item_id', 'warehouse_id']);
        });
        if (DB::getDriverName() === 'sqlite') {
            DB::unprepared("CREATE TRIGGER warehouse_reservations_update BEFORE UPDATE ON warehouse_reservations BEGIN SELECT RAISE(ABORT, 'Preservar reservas'); END; CREATE TRIGGER warehouse_reservations_delete BEFORE DELETE ON warehouse_reservations BEGIN SELECT RAISE(ABORT, 'Preservar reservas'); END;");
        }
        if (DB::getDriverName() === 'pgsql') {
            DB::unprepared("CREATE FUNCTION preserve_warehouse_reservations() RETURNS trigger LANGUAGE plpgsql AS $$ BEGIN RAISE EXCEPTION 'Preservar reservas'; END $$; CREATE TRIGGER warehouse_reservations_immutable BEFORE UPDATE OR DELETE ON warehouse_reservations FOR EACH ROW EXECUTE FUNCTION preserve_warehouse_reservations();");
        }
    }

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