<?php

namespace App\Filament\Pages;

use App\Exports\DayPlanSampleExport;
use Filament\Pages\Page;
use Illuminate\Support\Facades\Auth;
use Filament\Forms\Form;
use Filament\Forms\Components\Section;
use Filament\Forms\Components\Select;
use Filament\Forms\Components\TextInput;
use Filament\Notifications\Notification;
use Filament\Facades\Filament;
use App\Models\Plant;
use Filament\Actions\Action;
use Filament\Forms\Components\FileUpload;
use Maatwebsite\Excel\Facades\Excel;
use Illuminate\Support\Facades\Storage;
use App\Imports\DayPlanTargetImport;

class ProductionPlanTarget extends Page
{
    protected static ?string $navigationIcon = 'heroicon-o-document-text';

    protected static string $view = 'filament.pages.production-plan-target';

    protected static ?string $navigationGroup = 'Production Report';

    public array $filters = [];


    public function form(Form $form): Form
    {
        return $form
            ->statePath('filters')
            ->schema([
                Section::make('')
                    ->schema([
                        Select::make('year')
                            ->label('Year')
                            ->reactive()
                            // ->searchable()
                            ->options([
                                '2025' => '2025',
                                '2026' => '2026',
                                '2027' => '2027',
                                '2028' => '2028',
                                '2029' => '2029',
                                '2030' => '2030',
                                '2031' => '2031',
                                '2032' => '2032',
                                '2033' => '2033',
                                '2034' => '2034',
                                '2035' => '2035',
                                '2036' => '2036',
                                '2037' => '2037',
                                '2038' => '2038',
                                '2039' => '2039',
                                '2040' => '2040',
                            ])
                            ->required()
                            ->afterStateUpdated(function ($state, callable $get, $set) {
                                $set('month', null);
                                $set('plant_id', null);
                                $set('line_id', null);
                                $set('category', null);
                                $plantId = $get('plant_id');
                                $lineId = $get('line_id');
                                // $this->dispatch('loadData',$plantId, $lineId, $state, '');
                                $this->dispatch('loadData',$state, '', '', '', '');
                            }),

                        Select::make('month')
                            ->label('Month')
                            ->reactive()
                            // ->searchable()
                            ->options([
                                '01' => 'January',
                                '02' => 'February',
                                '03' => 'March',
                                '04' => 'April',
                                '05' => 'May',
                                '06' => 'June',
                                '07' => 'July',
                                '08' => 'August',
                                '09' => 'September',
                                '10' => 'October',
                                '11' => 'November',
                                '12' => 'December',
                            ])
                            ->required()
                            ->afterStateUpdated(function ($state, callable $get, $set) {

                                $set('plant_id', null);
                                $set('line_id', null);
                                $set('category', null);

                                $year = $get('year');

                                $this->dispatch('loadData',$year, $state, '', '', '');

                                // $plantId = $get('plant_id');
                                // $lineId = $get('line_id');
                                // // $month = $get('month');
                                // $year = $get('year');

                                // $month = (int) $get('month');

                                // if (!$month) {
                                //     return;
                                // }
                                // $this->dispatch('loadData', $plantId, $lineId, $month, $year);
                            }),
                        Select::make('plant_id')
                            ->label('Plant')
                            ->relationship('plant', 'name')
                            ->reactive()
                            // ->searchable()
                            ->options(function (callable $get) {
                                $userHas = Filament::auth()->user()->plant_id;
                                return ($userHas && strlen($userHas) > 0) ? Plant::where('id', $userHas)->pluck('name', 'id')->toArray() : Plant::pluck('name', 'id')->toArray();
                            })
                            ->required()
                            ->afterStateUpdated(function ($state, callable $get, $set) {
                                // dd($state);
                                $set('line_id', null);
                                $set('category', null);
                                $this->dispatch('loadData',$state, '', '', '', '');
                            }),
                        Select::make('line_id')
                            ->label('Line')
                            ->required()
                            // ->relationship('line', 'name')
                            // ->searchable()
                            ->columnSpan(1)
                            ->options(function (callable $get) {
                                if (!$get('plant_id')) {
                                    return [];
                                }

                                return \App\Models\Line::where('plant_id', $get('plant_id'))
                                    ->pluck('name', 'id')
                                    ->toArray();
                            })
                            ->reactive()
                            ->afterStateUpdated(function ($state, callable $get, $set) {
                                $this->dispatch('loadData',$state, '', '', '', '');
                            }),
                            // ->afterStateUpdated(function ($state, callable $get, $set) {
                            //     $plantId = $get('plant_id');
                            //     $lineId = $state;
                            //     // $month = $get('month');
                            //     $year = $get('year');

                            //     $month = (int) $get('month');
                            //     $this->dispatch('loadData',$year, $month, $plantId, $lineId, '');
                            // }),

                        Select::make('week')
                            ->label('Choose Week')
                            ->reactive()
                            // ->searchable()
                            ->options([
                                'all_weeks' => 'All Weeks',
                                'Week_1' => 'Week 1',
                                'Week_2' => 'Week 2',
                                'Week_3' => 'Week 3',
                                'Week_4' => 'Week 4',
                                'Week_5' => 'Week 5',
                            ])
                            ->required()
                            ->afterStateUpdated(function ($state, callable $get, $set) {
                                $set('category', null);

                                $year = $get('year');

                                $this->dispatch('loadData',$year, $state, '', '', '');

                                // $plantId = $get('plant_id');
                                // $lineId = $get('line_id');
                                // // $month = $get('month');
                                // $year = $get('year');

                                // $month = (int) $get('month');

                                // if (!$month) {
                                //     return;
                                // }
                                // $this->dispatch('loadData', $plantId, $lineId, $month, $year);
                            }),

                        TextInput::make('category')
                            ->label('Category')
                            ->reactive()
                            ->afterStateUpdated(function ($state, callable $get, $set) {
                                $plantId = $get('plant_id');
                                $lineId = $get('line_id');
                                // $month = $get('month');
                                $year = $get('year');

                                $month = (int) $get('month');
                                $category = $get('category');

                            }),

                    ])
                    ->columns(6)
            ]);
    }

    public function export(){

        $plantId = $this->filters['plant_id'] ?? null;
        $lineId = $this->filters['line_id'] ?? null;
        $year = $this->filters['year'] ?? null;
        $month = $this->filters['month'] ?? null;

        if (! $plantId) {
            Notification::make()
                ->title('Plant')
                ->body("please select plant to export data..!")
                ->danger()
                ->send();
            return;
        }
        else if (! $lineId) {
            Notification::make()
                ->title('Line')
                ->body("please select line to export data..!")
                ->danger()
                ->send();
            return;
        }
        else if (! $year) {
            Notification::make()
                ->title('Year')
                ->body("please select year to export data..!")
                ->danger()
                ->send();
            return;
        }
        else if (! $month) {
            Notification::make()
                ->title('Month')
                ->body("please select month to export data..!")
                ->danger()
                ->send();
            return;
        }

        $this->dispatch('loadData1' ,$plantId, $lineId, $year, $month);

        // $this->dispatch('loadDataMonthly' ,$plantId, $lineId, $year, $month);
    }

    public function importDayPlan($filePath)
    {
        $plantId = $this->filters['plant_id'] ?? null;
        $lineId = $this->filters['line_id'] ?? null;
        $year = $this->filters['year'] ?? null;
        $month = $this->filters['month'] ?? null;
        $week = $this->filters['week'] ?? null;

        if (!$plantId || !$lineId || !$year || !$month || !$week) {
            Notification::make()
                ->title('Missing Filters')
                ->body('Please select Plant, Line, Year, Month and Week.')
                ->danger()
                ->send();

            return;
        }

        try {

            $fullPath = Storage::disk('local')->path($filePath);

            Excel::import(
                new DayPlanTargetImport(
                    $plantId,
                    $lineId,
                    $year,
                    $month,
                    $week
                ),
                $fullPath
            );

            Notification::make()
                ->title('Import Successful')
                ->body('Selected week daily targets imported successfully.')
                ->success()
                ->send();

            $this->dispatch('loadWeekData',$year, $month, $plantId, $lineId, $week);

        } catch (\Throwable $e) {

            Notification::make()
                ->title('Import Failed')
                ->body($e->getMessage())
                ->danger()
                ->persistent()
                ->send();
        }
    }

    public function downloadSampleFormat()
    {
        $plantId = $this->filters['plant_id'] ?? null;
        $lineId = $this->filters['line_id'] ?? null;
        $year = $this->filters['year'] ?? null;
        $month = $this->filters['month'] ?? null;
        $week = $this->filters['week'] ?? null;

        if (!$plantId || !$lineId || !$year || !$month || !$week) {

            Notification::make()
                ->title('Missing Filters')
                ->body('Please select Plant, Line, Year, Month and Week.')
                ->danger()
                ->send();

            return;
        }

        return Excel::download(
            new DayPlanSampleExport(
                $plantId,
                $lineId,
                $year,
                $month,
                $week
            ),
            "Day_Plan_Sample_{$week}.xlsx"
        );
    }

    public function generate(){
        $plantId = $this->filters['plant_id'] ?? null;
        $lineId = $this->filters['line_id'] ?? null;
        $year = $this->filters['year'] ?? null;
        $month = (int) $this->filters['month'] ?? null;
        $week = $this->filters['week'] ?? null;
        $category = $this->filters['category'] ?? null;


        if($week != '' && $week != null){
            $this->dispatch('loadWeekData',$year, $month, $plantId, $lineId, $week);
        }
        else if($category == '' || $category == null){
            $this->dispatch('loadData',$year, $month, $plantId, $lineId, '');
        }
        else{
            $this->dispatch('loadDataCategory',$year, $month, $plantId, $lineId, $category);
        }

    }

    public function importDayPlanAction(): Action
    {
        return Action::make('importDayPlan')
            ->label('Import')
            ->form([
                FileUpload::make('file')
                    ->label('Choose Excel File')
                    ->acceptedFileTypes([
                        'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
                    ])
                    ->required()
                    ->disk('local')
                    ->directory('day-plan-imports'),
            ])
            ->action(function (array $data) {
                $this->importDayPlan($data['file']);
            });
    }

    public static function canAccess(): bool
    {
        return Auth::check() && Auth::user()->can('view production plan target page');
    }
}