<?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
    {
        if (! Schema::hasTable('preventivi')) {
            Schema::create('preventivi', function (Blueprint $table) {
                $table->id();

                $table->foreignId('stabile_id')->constrained('stabili')->cascadeOnDelete();

                $table->unsignedSmallInteger('anno_gestione');
                $table->string('tipo_gestione', 32);
                $table->string('descrizione');

                $table->string('stato', 32)->default('bozza');
                $table->decimal('importo_totale', 12, 2)->default(0);

                $table->date('data_creazione')->nullable();
                $table->date('data_approvazione')->nullable();
                $table->foreignId('approvato_da_user_id')->nullable()->constrained('users')->nullOnDelete();

                $table->text('note')->nullable();
                $table->unsignedInteger('versione')->default(1);

                $table->timestamps();
                $table->softDeletes();

                $table->index(['stabile_id', 'anno_gestione']);
                $table->index(['stato', 'tipo_gestione']);
            });
        }

        if (! Schema::hasTable('voci_preventivo')) {
            Schema::create('voci_preventivo', function (Blueprint $table) {
                $table->id();

                $table->foreignId('preventivo_id')->constrained('preventivi')->cascadeOnDelete();

                $table->string('codice', 20);
                $table->string('descrizione');
                $table->decimal('importo_preventivato', 12, 2)->default(0);
                $table->decimal('importo_effettivo', 12, 2)->nullable();

                $table->unsignedBigInteger('tabella_millesimale_id')->nullable();
                $table->unsignedBigInteger('voce_spesa_id')->nullable();

                $table->boolean('ricorrente')->default(false);
                $table->string('frequenza', 32)->nullable();
                $table->date('data_scadenza_prevista')->nullable();
                $table->unsignedInteger('ordinamento')->default(0);

                $table->text('note')->nullable();

                $table->timestamps();

                $table->index(['preventivo_id', 'ordinamento']);
                $table->index(['tabella_millesimale_id']);
                $table->index(['voce_spesa_id']);
            });
        }

        if (! Schema::hasTable('ripartizioni_preventivo')) {
            Schema::create('ripartizioni_preventivo', function (Blueprint $table) {
                $table->id();

                $table->foreignId('voce_preventivo_id')->constrained('voci_preventivo')->cascadeOnDelete();

                // Nota: non forziamo FK perché nel legacy può non essere 'id'
                $table->unsignedBigInteger('unita_immobiliare_id');

                $table->decimal('quota_calcolata', 12, 2)->nullable();
                $table->decimal('quota_modificata', 12, 2)->nullable();
                $table->decimal('quota_finale', 12, 2)->nullable();

                $table->unsignedInteger('versione')->default(1);
                $table->foreignId('modificato_da_user_id')->nullable()->constrained('users')->nullOnDelete();
                $table->text('motivo_modifica')->nullable();
                $table->timestamp('data_modifica')->nullable();

                $table->timestamps();

                $table->unique(['voce_preventivo_id', 'unita_immobiliare_id'], 'uq_rip_prev_voce_unita');
            });
        }

        if (! Schema::hasTable('log_modifiche_preventivo')) {
            Schema::create('log_modifiche_preventivo', function (Blueprint $table) {
                $table->id();

                $table->string('entita', 32);
                $table->unsignedBigInteger('entita_id');

                $table->unsignedInteger('versione_precedente')->default(0);
                $table->unsignedInteger('versione_nuova')->default(0);

                $table->foreignId('utente_id')->nullable()->constrained('users')->nullOnDelete();
                $table->string('tipo_operazione', 32)->nullable();
                $table->text('motivo')->nullable();

                $table->json('dati_precedenti')->nullable();
                $table->json('dati_nuovi')->nullable();
                $table->json('diff')->nullable();

                $table->timestamps();

                $table->index(['entita', 'entita_id']);
            });
        }
    }

    public function down(): void
    {
        Schema::dropIfExists('log_modifiche_preventivo');
        Schema::dropIfExists('ripartizioni_preventivo');
        Schema::dropIfExists('voci_preventivo');
        Schema::dropIfExists('preventivi');
    }
};