<?php

declare(strict_types=1);

namespace App\Filament\Pages;

use App\Models\OsurgInitial;
use App\Models\SyncLog;
use App\Services\OsurgImportService;
use App\Services\SyncService;
use Filament\Actions\Action;
use Filament\Notifications\Notification;
use Filament\Pages\Page;
use Livewire\WithFileUploads;
use Morilog\Jalali\Jalalian;

class SyncPage extends Page
{
    use WithFileUploads;
    protected string $view = 'filament.pages.sync-page';

    protected static ?int $navigationSort = 99;

    public static function canAccess(): bool
    {
        return auth()->user()->can('View:SyncPage');
    }

    public static function shouldRegisterNavigation(): bool
    {
        return false;
    }

    public static function getNavigationIcon(): \BackedEnum|string|null
    {
        return 'heroicon-o-arrows-right-left';
    }

    public static function getNavigationGroup(): ?string
    {
        return __('navigation.groups.system');
    }

    public string $report       = '';
    public string $importReport = '';
    public bool   $importing    = false;

    public $sqlFile = null;

    public static function getNavigationLabel(): string
    {
        return __('navigation.sync.label');
    }

    public function getTitle(): string
    {
        return __('navigation.sync.title');
    }

    public function getPendingCount(): int
    {
        return SyncLog::changesSince((int) OsurgInitial::val('our_sync_cursor', 0))->count();
    }

    public function getLastSyncTime(): string
    {
        $last = SyncLog::where('action', 'synced')->latest('id')->first();
        if (! $last) {
            return __('navigation.sync.never');
        }

        return Jalalian::fromCarbon($last->datetime->timezone('Asia/Tehran'))->format('Y/m/d H:i:s');
    }

    protected function rules(): array
    {
        return [
            'sqlFile' => ['required', 'file', 'max:307200'], 
        ];
    }


    protected function getHeaderActions(): array
    {
        return [
            Action::make('sync')
                ->label(__('navigation.sync.sync_with_peer'))
                ->icon('heroicon-o-arrows-right-left')
                ->color('primary')
                ->requiresConfirmation()
                ->modalHeading(__('navigation.sync.confirm_heading'))
                ->modalDescription(__('navigation.sync.confirm_description'))
                ->modalSubmitActionLabel(__('navigation.sync.confirm_button'))
                ->action('runSync'),

            Action::make('backup')
                ->label(__('navigation.backup.label'))
                ->icon('heroicon-o-arrow-down-tray')
                ->color('success')
                ->action('downloadBackup'),
        ];
    }

    public function runSync(): void
    {
        $service = SyncService::fromConfig();

        if (! $service->isConfigured()) {
            Notification::make()
                ->title(__('navigation.sync.error_title'))
                ->body(__('navigation.sync.error_not_configured'))
                ->danger()
                ->send();
            return;
        }

        $result = $service->sync();

        $this->report = implode("\n", $result['report']);

        Notification::make()
            ->title($result['success'] ? __('navigation.sync.success') : __('navigation.sync.failed'))
            ->body(__('navigation.sync.see_report'))
            ->color($result['success'] ? 'success' : 'warning')
            ->send();
    }


    public function startImport(): void
    {
        $this->validate();

        $this->importing = true;

        try {
            @set_time_limit(600);

            $tmpPath = $this->sqlFile->getRealPath();

            $service = new OsurgImportService();
            $result  = $service->import($tmpPath);

            $this->importReport = implode("\n", $result['report']);

            Notification::make()
                ->title($result['success']
                    ? __('navigation.import.success')
                    : __('navigation.import.failed'))
                ->body(__('navigation.sync.see_report'))
                ->color($result['success'] ? 'success' : 'danger')
                ->send();
        } finally {
            $this->sqlFile   = null;
            $this->importing = false;
        }
    }


    public function downloadBackup(): \Symfony\Component\HttpFoundation\StreamedResponse
    {
        $data = [
            'exported_at'  => now()->toDateTimeString(),
            'last_sync_id' => SyncLog::lastSyncId(),
            'changes'      => SyncLog::all()->toArray(),
        ];

        $filename = 'matab-backup-' . now()->format('Y-m-d_H-i-s') . '.json';

        return response()->streamDownload(function () use ($data) {
            echo json_encode($data, JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT);
        }, $filename, ['Content-Type' => 'application/json']);
    }
}