<?php

namespace App\Filament\Pages;

use Carbon\Carbon;
use App\Models\Cashbox;
use Filament\Pages\Page;
use App\Models\CashMovement;
use Illuminate\Contracts\View\View;
use Filament\Forms\Contracts\HasForms;
use Filament\Schemas\Components\Section;
use Filament\Forms\Components\DatePicker;
use Filament\Forms\Concerns\InteractsWithForms;
use Filament\Schemas\Schema;
use App\Exports\AllCashboxesExport;
use Maatwebsite\Excel\Facades\Excel;
use Mpdf\Mpdf;
use BezhanSalleh\FilamentShield\Traits\HasPageShield;
use Filament\Support\Icons\Heroicon;

class AllCashboxesReport extends Page implements HasForms
{
    use InteractsWithForms;
    use HasPageShield;

    protected string $view = 'filament.pages.all-cashboxes-report';

    public ?array $data = [];
    public ?array $report_data = null;

    protected static string|\BackedEnum|null $navigationIcon = Heroicon::OutlinedCurrencyDollar;
    public function getTitle(): string
    {
        return __('filament/admin/reports.all_cashboxes_report');
    }

    public static function getNavigationLabel(): string
    {
        return __('filament/admin/reports.all_cashboxes_report');
    }

    public static function getNavigationGroup(): ?string
    {
        return __('filament.navigation_groups.cashboxes');
    }

    public function mount(): void
    {
        $this->form->fill([
            'from_date' => now()->startOfMonth(),
            'to_date' => now()->endOfMonth(),
        ]);
        $this->generateReport();
    }

    public function form(Schema $schema): Schema
    {
        return $schema
            ->statePath('data')
            ->components([
                Section::make(__('filament/admin/reports.filters'))
                    ->columns(2)
                    ->schema([
                        DatePicker::make('from_date')
                            ->label(__('filament/admin/reports.from_date'))
                            ->native(false)
                            ->live()
                            ->afterStateUpdated(fn() => $this->generateReport()),

                        DatePicker::make('to_date')
                            ->label(__('filament/admin/reports.to_date'))
                            ->native(false)
                            ->live()
                            ->afterStateUpdated(fn() => $this->generateReport())
                            ->default(now())
                            ->required(),
                    ]),
            ]);
    }

    public function generateReport(): void
    {
        $formData = $this->form->getState();
        $from_date = isset($formData['from_date']) ? Carbon::parse($formData['from_date'])->startOfDay() : null;
        $to_date = isset($formData['to_date']) ? Carbon::parse($formData['to_date'])->endOfDay() : Carbon::now()->endOfDay();

        if ($from_date && $to_date->lt($from_date)) {
            \Filament\Notifications\Notification::make()
                ->title('تاريخ النهاية يجب أن يكون بعد أو يساوي تاريخ البداية')
                ->warning()
                ->send();
            $this->report_data = [];
            return;
        }

        $cashboxes = Cashbox::all();
        $cashboxes_data = [];

        foreach ($cashboxes as $cashbox) {
            // حساب الرصيد الافتتاحي
            $opening_balance = $cashbox->opening_balance;
            
            $movements_before = CashMovement::where('cashbox_id', $cashbox->id);
            if ($from_date) {
                $movements_before->where('date', '<', $from_date);
            }
            
            foreach ($movements_before->get() as $movement) {
                if ($movement->movement_type === 'in') {
                    $opening_balance += $movement->amount;
                } else {
                    $opening_balance -= $movement->amount;
                }
            }

            // جلب الحركات في الفترة
            $movements_query = CashMovement::where('cashbox_id', $cashbox->id);
            if ($from_date) {
                $movements_query->where('date', '>=', $from_date);
            }
            $movements_query->where('date', '<=', $to_date);
            $movements = $movements_query->get();

            $total_income = 0;
            $total_expense = 0;
            
            foreach ($movements as $movement) {
                if ($movement->movement_type === 'in') {
                    $total_income += $movement->amount;
                } else {
                    $total_expense += $movement->amount;
                }
            }

            $closing_balance = $opening_balance + $total_income - $total_expense;

            $cashboxes_data[] = [
                'cashbox' => $cashbox,
                'opening_balance' => $opening_balance,
                'total_income' => $total_income,
                'total_expense' => $total_expense,
                'net_change' => $total_income - $total_expense,
                'closing_balance' => $closing_balance,
                'movements_count' => $movements->count(),
            ];
        }

        // ترتيب حسب الرصيد الختامي (الأعلى أولاً)
        usort($cashboxes_data, function($a, $b) {
            return $b['closing_balance'] <=> $a['closing_balance'];
        });

        $this->report_data = [
            'from_date' => $from_date?->format('Y-m-d'),
            'to_date' => $to_date->format('Y-m-d'),
            'cashboxes' => $cashboxes_data,
            'summary' => [
                'total_cashboxes' => count($cashboxes_data),
                'total_opening_balance' => array_sum(array_column($cashboxes_data, 'opening_balance')),
                'total_income' => array_sum(array_column($cashboxes_data, 'total_income')),
                'total_expense' => array_sum(array_column($cashboxes_data, 'total_expense')),
                'total_net_change' => array_sum(array_column($cashboxes_data, 'net_change')),
                'total_closing_balance' => array_sum(array_column($cashboxes_data, 'closing_balance')),
            ],
        ];
    }

    public function exportExcel()
    {
        if (empty($this->report_data)) {
            $this->generateReport();
        }

        return Excel::download(
            new AllCashboxesExport($this->report_data, $this->data['from_date'], $this->data['to_date']),
            'all-cashboxes-' . now()->format('Y-m-d') . '.xlsx'
        );
    }

    public function exportPdf()
    {
        if (empty($this->report_data)) {
            $this->generateReport();
        }

        $mpdf = new Mpdf([
            'mode' => 'utf-8',
            'format' => 'A4',
            'orientation' => 'L',
            'default_font' => 'dejavusans',
            'autoScriptToLang' => true,
            'autoLangToFont' => true,
        ]);

        $mpdf->SetDirectionality('rtl');

        $html = view('reports.pdf.all-cashboxes', [
            'data' => $this->report_data,
        ])->render();

        $mpdf->WriteHTML($html);

        return response()->streamDownload(function () use ($mpdf) {
            echo $mpdf->Output('', 'S');
        }, 'all-cashboxes-' . now()->format('Y-m-d') . '.pdf');
    }

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