<?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('receipt_documents', function (Blueprint $table) {
            $table->id();
            $table->foreignId('tenant_id')->constrained();
            $table->foreignId('goods_receipt_id')->constrained();
            $table->foreignId('uploaded_by')->constrained('users');
            $table->string('document_type', 30);
            $table->string('original_name', 180);
            $table->string('path');
            $table->string('mime_type', 100);
            $table->unsignedInteger('size');
            $table->string('sha256', 64);
            $table->timestamp('created_at');
            $table->unique(['tenant_id', 'goods_receipt_id', 'document_type', 'sha256'], 'receipt_document_content_unique');
        });
        if (DB::getDriverName() === 'pgsql') {
            DB::unprepared("CREATE FUNCTION receipt_documents_immutable() RETURNS trigger LANGUAGE plpgsql AS $$ BEGIN RAISE EXCEPTION 'Receipt documents are append only'; END; $$;
                CREATE TRIGGER receipt_documents_immutable BEFORE UPDATE OR DELETE ON receipt_documents FOR EACH ROW EXECUTE FUNCTION receipt_documents_immutable();");
        } elseif (DB::getDriverName() === 'sqlite') {
            foreach (['UPDATE', 'DELETE'] as $event) {
                DB::unprepared('CREATE TRIGGER receipt_documents_'.strtolower($event)." BEFORE $event ON receipt_documents BEGIN SELECT RAISE(ABORT, 'Receipt documents are append only'); END");
            }
        }
    }

    public function down(): void
    {
        Schema::dropIfExists('receipt_documents');
        if (DB::getDriverName() === 'pgsql') {
            DB::unprepared('DROP FUNCTION IF EXISTS receipt_documents_immutable()');
        }
    }
};