<?php

namespace App\Filament\Pages;

use App\Models\Line;
use App\Models\PanelBoxValidation;
use App\Models\Plant;
use App\Models\Item;
use App\Models\StickerMaster;
use Filament\Notifications\Notification;
use Filament\Pages\Page;
use Filament\Forms\Concerns\InteractsWithForms;
use Filament\Actions\Concerns\InteractsWithActions;
use Filament\Forms\Form;
use Filament\Forms\Components\Section;
use Filament\Forms\Components\Select;
use Filament\Forms\Components\TextInput;
use Filament\Facades\Filament;
use Illuminate\Support\Facades\Auth;

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

    protected static string $view = 'filament.pages.panel-box-inspection-stock';

    protected static ?string $navigationGroup = 'Panel Box';

    use InteractsWithActions;
    use InteractsWithForms;

    public $plantId;

    public $lineId;

    public array $filters = [];

    public $state = [];

    public function mount()
    {
        $this->form->fill([
            'plant_id' => $this->plantId,
            'line_id' => $this->lineId,
        ]);
    }

    public function form(Form $form): Form
    {
        return $form
            ->statePath('filters')
            ->schema([
                Section::make('')
                    ->schema([
                        Select::make('plant_id')
                            ->label('Plant Name')
                            ->relationship('plant', 'name')
                            ->reactive()
                            ->options(function (callable $get) {
                                $userHas = Filament::auth()->user()->plant_id;

                                return ($userHas && strlen($userHas) > 0) ? Plant::where('id', $userHas)->pluck('name', 'id')->toArray() : Plant::orderBy('code')->pluck('name', 'id')->toArray();
                            })
                            ->afterStateUpdated(function (callable $set, callable $get, $state) {
                                $set('item_id', null);
                                $set('line_id', null);

                                $set('plant', $state);

                                $pId = $get('plant_id');
                                if (! $pId) {
                                    $set('pqPlantError', 'Please select a plant first.');
                                } else {
                                    $set('pqPlantError', null);
                                }

                                $pId = $get('line_id');
                                if (! $pId) {
                                    $set('pqLineError', null);
                                }
                            })
                            ->required()
                            ->default(fn ($get) => $get('plant') ?? session('last_selected_plant_id'))
                            ->extraAttributes(fn ($get) => [
                                'class' => $get('pqPlantError') ? 'border-red-500' : '',
                            ])
                            ->hint(fn ($get) => $get('pqPlantError') ? $get('pqPlantError') : null)
                            ->hintColor('danger'),
                        Select::make('line_id')
                            ->label('Line Name')
                            ->relationship('line', titleAttribute: 'name')
                            ->reactive()
                            ->required()
                            ->options(function (callable $get) {
                                $plantId = $get('plant_id');
                                if (! $plantId) {
                                    return [];
                                }

                                return Line::where('plant_id', $plantId)
                                    ->pluck('name', 'id')
                                    ->toArray();
                            })
                            ->afterStateUpdated(function (callable $set, callable $get, $state) {
                                $set('item_id', null);

                                $set('line', $state);

                                $pId = $get('line_id');
                                if (! $pId) {
                                    $set('pqLineError', 'Please select a line.');
                                } else {
                                    $set('pqLineError', null);
                                }
                            })
                            ->default(fn ($get) => $get('line') ?? session('last_selected_line'))
                            ->extraAttributes(fn ($get) => [
                                'class' => $get('pqLineError') ? 'border-red-500' : '',
                            ])
                            ->hint(fn ($get) => $get('pqLineError') ? $get('pqLineError') : null)
                            ->hintColor('danger'),
                        TextInput::make('item_id')
                            ->label('Scan QR Code')
                            ->reactive()
                            ->extraAttributes([
                                'wire:keydown.enter' => 'processScan($event.target.value)',
                            ]),
                    ])
                    ->columns(3),
            ]);
    }

    public function processScan($value)
    {
        $plantId = $this->filters['plant_id'];

        $plantId = trim($plantId) ?? null;

        $lineId = $this->filters['line_id'];

        $lineId = trim($lineId) ?? null;

        $itemId = $this->filters['item_id'];

        $itemId = trim($itemId) ?? null;

        if (! $plantId) {
            Notification::make()
                ->title('Unknown Plant')
                ->body('Please select a plant.')
                ->warning()
                ->send();
            $this->form->fill([
                'plant_id' => $plantId,
                'line_id'  => $lineId,
                'item_id'  => null,
            ]);
            return;
        }
        else if (! $lineId) {
            Notification::make()
                ->title('Unknown Line')
                ->body('Please select a line.')
                ->warning()
                ->send();
            $this->form->fill([
                'plant_id' => $plantId,
                'line_id'  => $lineId,
                'item_id'  => null,
            ]);
            return;
        }

        $plaCode = Plant::find($plantId)?->code;

        // Check if QR format contains '|'

        // if ($itemId && str_contains($itemId, '|'))
        // {
        //     if (strpos($itemId, '|') == false) {

        //         Notification::make()
        //             ->title('Unknown Qr Code')
        //             ->body('Scan valid QR code. (Ex: Item_Code|Serial_Number)')
        //             ->warning()
        //             ->send();

        //         return;
        //     }
        //     if (! preg_match('/^[a-zA-Z0-9]{6,}+\|[1-9][a-zA-Z0-9]{8,}+(\|)?$/', $itemId)) {
        //         $splits = explode('|', $itemId);
        //         $iCode = trim($splits[0]);
        //         $sNumber = isset($splits[1]) ? trim($splits[1]) : null;

        //         if (! ctype_alnum($iCode)) {
        //             Notification::make()
        //                 ->title('Invalid Item Code')
        //                 ->body('Item code must contain alpha-numeric values.')
        //                 ->warning()
        //                 ->send();
        //             return;
        //         } elseif (strlen($iCode) < 6) {
        //             Notification::make()
        //                 ->title('Invalid Item Code')
        //                 ->body('Item code must be at least 6 digits.')
        //                 ->warning()
        //                 ->send();
        //             return;
        //         } elseif (! ctype_alnum($sNumber)) {
        //             Notification::make()
        //                 ->title('Invalid Serial Number')
        //                 ->body('Serial number must contain alpha-numeric values.')
        //                 ->warning()
        //                 ->send();
        //             return;
        //         }

        //         $iId = Item::where('code', $iCode)->where('plant_id', $plantId)->first();

        //         if(!$iId){
        //             Notification::make()
        //                 ->title('Item not found')
        //                 ->body("Item code'{$iCode}' not found against plant code '{$plaCode}' in item master.")
        //                 ->danger()
        //                 ->send();
        //             return;
        //         }

        //         $sticker = StickerMaster::where('plant_id', $plantId)->where('item_id', $iId->id)->first();

        //         if(!$sticker){
        //             Notification::make()
        //                 ->title('Unknown Item Code')
        //                 ->body("Item code not found '{$iId->code}' in sticker master.")
        //                 ->danger()
        //                 ->send();
        //             return;
        //         }
        //     }
        // }
        // if (str_contains($itemId, '|')) {

        //     $parts = array_map('trim', explode('|', $itemId));

        //     if (count($parts) != 2) {
        //         Notification::make()
        //             ->title('Invalid QR Format')
        //             ->body('Expected format: ItemCode|SerialNumber')
        //             ->danger()
        //             ->send();

        //         return;
        //     }

        //     $itemCode = $parts[0];
        //     $serialNumber = $parts[1];

        //     if($serialNumber == '' || $serialNumber == null){
        //         Notification::make()
        //             ->title('Unknown Serial number')
        //             ->body("Serial number can't be empty!")
        //             ->danger()
        //             ->send();
        //         return;
        //     }
        //     elseif (! ctype_alnum($serialNumber)) {
        //         Notification::make()
        //             ->title('Unknown Serial number')
        //             ->body("Serial Number should contain alpha-numeric values.")
        //             ->danger()
        //             ->send();
        //         return;
        //     }

        //     $iId = Item::where('code', $itemCode)->where('plant_id', $plantId)->first();

        //     if(!$iId){
        //         Notification::make()
        //             ->title('Item not found')
        //             ->body("Item code'{$itemCode}' not found against plant code '{$plaCode}' in item master.")
        //             ->danger()
        //             ->send();
        //         return;
        //     }
        // }

        if (str_contains($itemId, '/'))
        {
            $parts = explode('/', $itemId);

            if (count($parts) < 3) {

                Notification::make()
                    ->title('Invalid QR Format')
                    ->body('Expected format: plantcode/itemcode/yearmm/serialnumber (Or) plantcode/panelboxcode/serialnumber')
                    ->danger()
                    ->send();
                $this->form->fill([
                    'plant_id' => $plantId,
                    'line_id'  => $lineId,
                    'item_id'  => null,
                ]);
                return;
            }

            $supplier = $parts[0];
            $panelBoxCode = $parts[1];
            $panelBoxSerialNo = implode('/', array_slice($parts, 2));

            $itemCode = $panelBoxCode;
            $serialNumber = $panelBoxSerialNo;

            $iId = Item::where('code', $itemCode)->where('plant_id', $plantId)->first();

            if(!$iId){
                Notification::make()
                    ->title('Item not found')
                    ->body("Item code'{$itemCode}' not found against plant code '{$plaCode}' in item master.")
                    ->danger()
                    ->send();
                $this->form->fill([
                    'plant_id' => $plantId,
                    'line_id'  => $lineId,
                    'item_id'  => null,
                ]);
                return;
            }

            $sticker = StickerMaster::where('plant_id', $plantId)->where('item_id', $iId->id)->first();

            if(!$sticker){
                Notification::make()
                    ->title('Unknown Item Code')
                    ->body("Item code not found '{$iId->code}' in sticker master.")
                    ->danger()
                    ->send();
                $this->form->fill([
                    'plant_id' => $plantId,
                    'line_id'  => $lineId,
                    'item_id'  => null,
                ]);
                return;
            }
        }
        else {
            Notification::make()
                ->title('Invalid QR Format')
                ->body('Expected format: plantcode/itemcode/yearmm/serialnumber (Or) plantcode/panelboxcode/serialnumber')
                ->danger()
                ->send();
            $this->form->fill([
                'plant_id' => $plantId,
                'line_id'  => $lineId,
                'item_id'  => null,
            ]);
            return;
        }

        if (strlen($itemCode) < 6) {
            Notification::make()
                ->title('Unknown Item Code')
                ->body('Item code must be at least 6 digits.')
                ->danger()
                ->send();
            $this->form->fill([
                'plant_id' => $plantId,
                'line_id'  => $lineId,
                'item_id'  => null,
            ]);
            return;
        } elseif (! ctype_alnum($itemCode)) {
            Notification::make()
                ->title('Unknown Item Code')
                ->body('Item Code should contain alpha-numeric values.')
                ->danger()
                ->send();
            $this->form->fill([
                'plant_id' => $plantId,
                'line_id'  => $lineId,
                'item_id'  => null,
            ]);
            return;
        }

        if (! $plantId) {
            Notification::make()
                ->title('Unknown Plant')
                ->body('Please select a plant first.')
                ->danger()
                ->send();
            $this->form->fill([
                'plant_id' => $plantId,
                'line_id'  => $lineId,
                'item_id'  => null,
            ]);
            return;
        }
        // Check if the item exists for the selected plant
        $stickerMaster = StickerMaster::where('plant_id', $plantId)->whereHas('item', function ($query) use ($itemCode) {
            $query->where('code', $itemCode);
        })->first();

        if (! $stickerMaster) {
            Notification::make()
                ->title('Unknown Item Code')
                ->body('Item code does not exist in master data.')
                ->danger()
                ->send();
            $this->form->fill([
                'plant_id' => $plantId,
                'line_id'  => $lineId,
                'item_id'  => null,
            ]);
            return;
        } else {
            if (! $stickerMaster->item->uom) {
                Notification::make()
                    ->title('Unknown Item Code')
                    ->body("Item code does not have 'UOM' in master data.")
                    ->danger()
                    ->send();
                $this->form->fill([
                    'plant_id' => $plantId,
                    'line_id'  => $lineId,
                    'item_id'  => null,
                ]);
                return;
            }
        }

        $serialExists = PanelBoxValidation::where('serial_number', $serialNumber)->where('plant_id', $plantId)->first();

        if ($serialExists) {
            Notification::make()
                ->title('Duplicate Serial Number')
                ->body("Serial number already exists $serialNumber.")
                ->danger()
                ->send();
            $this->form->fill([
                'plant_id' => $plantId,
                'line_id'  => $lineId,
                'item_id'  => null,
            ]);
            return;
        }

        $item = Item::where('code', $itemCode)->where('plant_id', $plantId)->first();

        if (! $item) {
            Notification::make()
                ->title('Unknown Item Code')
                ->body("Item code '{$itemCode}' not found against plant code '{$plaCode}' in item master.")
                ->danger()
                ->send();
            $this->form->fill([
                'plant_id' => $plantId,
                'line_id'  => $lineId,
                'item_id'  => null,
            ]);
            return;
        }

        // Find sticker master
        $sticker = StickerMaster::where('plant_id', $plantId)->where('item_id', $item->id)->first();

        if (! $sticker) {
            Notification::make()
                ->title('Unknown Sticker')
                ->body("Sticker master not found for the selected item.")
                ->danger()
                ->send();
            $this->form->fill([
                'plant_id' => $plantId,
                'line_id'  => $lineId,
                'item_id'  => null,
            ]);
            return;
        }

        // Create a new PanelBoxValidation record

        $userName = Filament::auth()->user()->name;

        $panelBoxValidation = PanelBoxValidation::create([
            'plant_id' => $plantId,
            'line_id' => $lineId,
            'sticker_master_id' => $sticker->id,
            'serial_number' => $serialNumber,
            'panel_box_code' => $itemCode ?? null,
            'panel_box_supplier' => $supplier ?? null,
            'panel_box_serial_number' => $serialNumber ?? null,
            'status' => 'Ok',
            'created_by' => $userName,
            'updated_by' => $userName,
        ]);

        if($panelBoxValidation){
            Notification::make()
                ->title('Success')
                ->body("Panel Box with Serial Number '{$serialNumber}' has been successfully inserted.")
                ->success()
                ->send();
            $this->form->fill([
                'plant_id' => $plantId,
                'line_id'  => $lineId,
                'item_id'  => null,
            ]);
            return;
        } else {
            Notification::make()
                ->title('Error')
                ->body("Failed to insert Panel Box with Serial Number '{$serialNumber}'.")
                ->danger()
                ->send();
            $this->form->fill([
                'plant_id' => $plantId,
                'line_id'  => $lineId,
                'item_id'  => null,
            ]);
            return;
        }
    }

    public static function canAccess(): bool
    {
        return Auth::check() && Auth::user()->can('view panel box inspection stock page');
    }
}