<?php

namespace App\Services;

use App\Models\Central\Company;
use App\Models\Tenant\Appointment;
use App\Models\Tenant\Client;
use App\Models\Tenant\Deal;
use App\Models\Tenant\EmployeeProfile;
use App\Models\Tenant\Expense;
use App\Models\Tenant\Labor;
use App\Models\Tenant\Lead;
use App\Models\Tenant\Part;
use App\Models\Tenant\Payment;
use App\Models\Tenant\Purchase;
use App\Models\Tenant\PurchaseItem;
use App\Models\Tenant\Supplier;
use App\Models\Tenant\User;
use App\Models\Tenant\Vehicle;
use App\Models\Tenant\WorkOrder;
use App\Models\Tenant\WorkOrderPart;
use App\Models\Tenant\WorkOrderWork;
use ZipArchive;

class TenantBackupService
{
    /**
     * Export all tenant data to a temporary ZIP file. Returns absolute path.
     * Caller is responsible for streaming + cleanup.
     */
    public function export(Company $company): string
    {
        $tmp = storage_path('app/backups');
        if (! is_dir($tmp)) @mkdir($tmp, 0775, true);
        $file = $tmp . '/tenant-' . $company->slug . '-' . date('Ymd-His') . '.zip';

        $zip = new ZipArchive();
        if ($zip->open($file, ZipArchive::CREATE | ZipArchive::OVERWRITE) !== true) {
            throw new \RuntimeException('Nu pot crea fișierul ZIP la ' . $file);
        }

        // Tables to dump.
        $tables = [
            'company' => Company::withoutGlobalScopes()->where('id', $company->id)->get(),
            'users' => User::all(),
            'clients' => Client::all(),
            'vehicles' => Vehicle::all(),
            'leads' => Lead::all(),
            'deals' => Deal::all(),
            'appointments' => Appointment::all(),
            'work_orders' => WorkOrder::with(['works', 'parts'])->get(),
            'wo_works' => WorkOrderWork::all(),
            'wo_parts' => WorkOrderPart::all(),
            'labors' => Labor::all(),
            'parts' => Part::all(),
            'suppliers' => Supplier::all(),
            'purchases' => Purchase::with('items')->get(),
            'purchase_items' => PurchaseItem::all(),
            'payments' => Payment::all(),
            'expenses' => Expense::all(),
            'employee_profiles' => EmployeeProfile::all(),
        ];

        $manifest = [
            'tenant' => $company->only(['id', 'slug', 'name', 'city', 'phone', 'email']),
            'exported_at' => now()->toIso8601String(),
            'app_version' => 'AutoCRM-1.0',
            'counts' => [],
        ];

        foreach ($tables as $name => $rows) {
            $json = $rows->toJson(JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
            $zip->addFromString("data/{$name}.json", $json);
            $manifest['counts'][$name] = $rows->count();
        }

        $zip->addFromString('manifest.json', json_encode($manifest, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES));

        // Optionally embed media files (logo + favicon).
        foreach (['logo', 'favicon'] as $col) {
            $m = $company->getFirstMedia($col);
            if ($m && file_exists($m->getPath())) {
                $zip->addFile($m->getPath(), 'media/' . $col . '.' . pathinfo($m->getPath(), PATHINFO_EXTENSION));
            }
        }

        $zip->close();
        return $file;
    }

    public function filename(Company $company): string
    {
        return 'tenant-' . $company->slug . '-' . date('Ymd-His') . '.zip';
    }
}