<?php

namespace App\Filament\Resources;

use App\Filament\Exports\LocatorInvoiceValidationExporter;
use App\Filament\Imports\LocatorInvoiceValidationImporter;
use App\Filament\Resources\LocatorInvoiceValidationResource\Pages;
use App\Filament\Resources\LocatorInvoiceValidationResource\RelationManagers;
use App\Models\Configuration;
use App\Models\InvoiceValidation;
use App\Models\LocatorInvoiceValidation;
use App\Models\PalletValidation;
use App\Models\Plant;
use App\Models\StickerMaster;
use Filament\Facades\Filament;
use Filament\Forms;
use Filament\Forms\Components\FileUpload;
use Filament\Forms\Components\Section;
use Filament\Forms\Components\Select;
use Filament\Forms\Components\ToggleButtons;
use Filament\Forms\Form;
use Filament\Forms\Get;
use Filament\Notifications\Notification;
use Filament\Resources\Resource;
use Filament\Tables;
use Filament\Tables\Table;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\SoftDeletingScope;
use Maatwebsite\Excel\Facades\Excel;
use Filament\Tables\Actions\ExportAction;
use Filament\Tables\Actions\ImportAction;
use Storage;
use Str;

class LocatorInvoiceValidationResource extends Resource
{
    protected static ?string $model = LocatorInvoiceValidation::class;

    protected static ?string $navigationIcon = 'heroicon-o-rectangle-stack';

    protected static ?string $navigationGroup = 'Export Dispatch';

    public static function form(Form $form): Form
    {
        return $form
            ->schema([
                Section::make('')
                ->schema([
                Forms\Components\Select::make('plant_id')
                    ->label('Plant')
                    ->reactive()
                    ->relationship('plant', 'name')
                    ->disabled(fn (Get $get) => $get('invoice_number'))
                    ->required()
                    ->afterStateUpdated(function ($state, callable $set, callable $get) {
                        $plantId = $get('plant_id');
                        if ($plantId)
                        {
                            $set('plant', $plantId);
                            $set('invoice_number', null);
                            $set('pallet_number', null);
                            $set('serial_number', null);
                            $set('sno_quantity', null);
                        }
                        else
                        {
                            $set('plant', null);
                            $set('invoice_number', null);
                            $set('pallet_number', null);
                            $set('serial_number', null);
                            $set('sno_quantity', null);
                        }
                    }),

                Forms\Components\Hidden::make('plant')
                    ->reactive(),

                Forms\Components\TextInput::make('invoice_number')
                    ->label('Scan Invoice No')
                    ->required()
                    ->reactive()
                    ->extraAttributes([
                        'x-data' => '{ value: "" }',
                        'x-model' => 'value',
                        'x-on:keydown.enter.prevent' => '$wire.processinvoiceSNo()',
                    ])
                    ->readOnly(fn (callable $get) => !$get('plant') || $get('pallet_number') || $get('serial_number'))
                    ->afterStateUpdated(function ($state, callable $set, callable $get) {
                        $plantId = $get('plant');
                        if (!$plantId) {
                            $set('invoice_number', null);
                            $set('pallet_number', null);

                        }
                        $set('update_invoice', null);
                        $set('pallet_number', null);
                        $set('serial_number', null);
                    }),
                Forms\Components\TextInput::make('pallet_number')
                    ->label('Scan Pallet No')
                    ->reactive()
                    // ->readOnly(fn (callable $get) => !$get('plant') || !$get('invoice_number') || $get('serial_number'))
                    ->readOnly(function (callable $get) {
                        $invoiceNumber = $get('invoice_number');
                        $plantId = $get('plant');
                        $invoiceExist = false;

                        if (!empty($invoiceNumber) && !empty($plantId)) {
                            $records = LocatorInvoiceValidation::where('plant_id', $plantId)
                            ->where('invoice_number', $invoiceNumber)
                            ->get();

                            $allScanned = true;
                            foreach ($records as $record)
                            {
                                if (($record->scanned_status == null) || trim($record->scanned_status) == '') {
                                    $allScanned = false;
                                    break;
                                }
                            }

                            if (count($records) > 0 && !$allScanned) {
                                $invoiceExist = true;
                            }
                        }

                        return $invoiceExist == false || !$get('plant') || !$get('invoice_number') || $get('serial_number');
                    })
                    ->extraAttributes([
                        'wire:keydown.enter.prevent' => 'processPalletNo()',
                    ])
                    ->afterStateUpdated(function ($state, callable $set, callable $get) {
                        $plantId = $get('plant');
                        if (!$plantId) {
                            $set('invoice_number', null);
                            $set('pallet_number', null);
                        }
                        $set('update_locator_invoice', null);
                    }),
                Forms\Components\TextInput::make('serial_number')
                    ->label('Scan Serial No')
                    ->reactive()
                    // ->readOnly(fn (callable $get) => !$get('plant') || !$get('invoice_number') || $get('pallet_number'))
                    ->readOnly(function (callable $get) {
                        $invoiceNumber = $get('invoice_number');
                        $plantId = $get('plant');
                        $invoiceExist = false;

                        if (!empty($invoiceNumber) && !empty($plantId)) {
                            $records = LocatorInvoiceValidation::where('plant_id', $plantId)
                            ->where('invoice_number', $invoiceNumber)
                            ->get();

                            $allScanned = true;
                            foreach ($records as $record)
                            {
                                if (($record->scanned_status == null) || trim($record->scanned_status) == '') {
                                    $allScanned = false;
                                    break;
                                }
                            }

                            if (count($records) > 0 && !$allScanned) {
                                $invoiceExist = true;
                            }
                        }

                        return $invoiceExist == false || !$get('plant') || !$get('invoice_number') || $get('pallet_number');
                    })
                    ->extraAttributes([
                        'x-data' => '{ value: "" }',
                        'x-model' => 'value',
                        'x-on:keydown.enter.prevent' => '$wire.processSerialNo()',
                    ]),
                Forms\Components\TextInput::make('sno_quantity')
                    ->label('SNo. Quantity')
                    ->readOnly(),

                //Forms\Components\View::make('forms.components.update-invoice-button'),

                ToggleButtons::make('update_invoice')
                    ->label('Update Invoice?')
                    ->boolean()
                    ->grouped()
                    ->reactive()
                    ->hidden(function (callable $get) {
                        $invoiceNumber = $get('invoice_number');
                        $plantId = $get('plant');
                        $invoiceExist = false;

                        if (!empty($invoiceNumber) && !empty($plantId)) {

                            $records = LocatorInvoiceValidation::where('plant_id', $plantId)
                            ->where('invoice_number', $invoiceNumber)
                            ->get();

                            $allScanned = true;

                            foreach ($records as $record)
                            {
                                if (($record->scanned_status == null) || trim($record->scanned_status) == '') {
                                    $allScanned = false;
                                break;
                                }
                            }

                            if (count($records) > 0 && !$allScanned) {
                                $invoiceExist = true;
                            }
                        }

                        return $get('update_invoice') == '0' || $invoiceExist == false || !empty($get('pallet_number')) || !empty($get('serial_number')); //$get('invoice_number') == null
                    }),

                Forms\Components\TextInput::make('id')
                    ->hidden()
                    ->readOnly(),

                ToggleButtons::make('update_locator_invoice')
                    ->label('Update Partial Pallet?')
                    ->boolean()
                    ->grouped()
                    ->reactive()
                    ->hidden(function (callable $get) {
                        $palletNumber = $get('pallet_number');
                        $plantId = $get('plant');
                        $isPalletValid = false;

                        if (!empty($palletNumber) && !empty($plantId)) {
                            $pallet = PalletValidation::where('plant_id', $plantId)
                                ->where('pallet_number', $palletNumber)
                                ->first();
                            $isPalletValid = $pallet !== null;
                        }

                        return !$isPalletValid || $get('update_locator_invoice') == '0' || !empty($get('serial_number'));
                    })
                    ->afterStateUpdated(function ($state, callable $set, callable $get, $livewire) {
                        $plantId = $get('plant');

                        $palletNumber = $get('pallet_number');

                        $serialNumber = $get('serial_number');

                        $invoiceNumber = $get('invoice_number');

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

                        if ($state !== '1') {
                            $set('update_locator_invoice', '0');
                            $set('pallet_number', null);
                            return;
                        }

                        $palletRecord = PalletValidation::where('plant_id', $plantId)
                        ->where('pallet_number', $palletNumber)
                        ->first();

                        if (!$palletRecord)
                        {
                            Notification::make()
                            ->title("Pallet number '{$palletNumber}' does not exist.")
                            ->danger()
                            ->send();
                            return;
                        }

                        $palletRecords = PalletValidation::where('plant_id', $plantId)
                        ->where('pallet_number', $palletNumber)
                        ->get();

                        $allCompleted = true;
                        foreach ($palletRecords as $record) {
                            if ($record->pallet_status != 'Completed') {
                                $allCompleted = false;
                                break;
                            }
                        }

                        if (!$allCompleted)
                        {
                            Notification::make()
                                ->title("Pallet number '{$palletNumber}' is not completed in masters")
                                ->danger()
                                ->send();
                                return;
                        }

                        // if ($allCompleted)
                        // {
                        //     $serialNumbers = $palletRecords->pluck('serial_number')
                        //         ->map(function ($serial) {
                        //             return trim($serial);
                        //         })
                        //         ->all();

                        //     $InvoiceSerialNumbers = LocatorInvoiceValidation::where('plant_id', $plantId)
                        //     ->where('invoice_number', $invoiceNumber)
                        //     ->pluck('serial_number')
                        //     ->all();

                        //     $missingSerialNumbers = array_diff($InvoiceSerialNumbers, $serialNumbers);

                        //     $allmatchedSerialNumbers = array_unique(array_merge($InvoiceSerialNumbers, $serialNumbers));

                        //     if (!empty($missingSerialNumbers))
                        //     {

                        //         $matchedSerialNumbers = array_diff($serialNumbers, $missingSerialNumbers);

                        //         foreach ($matchedSerialNumbers as $serial)
                        //             {
                        //                 $invoiceRecord = LocatorInvoiceValidation::where('plant_id', $plantId)
                        //                     ->where('invoice_number', $invoiceNumber)
                        //                     ->where('serial_number', $serial)
                        //                     ->first();

                        //                 if ($invoiceRecord)
                        //                 {
                        //                     $invoiceRecord->scanned_status = 'Scanned';
                        //                     $invoiceRecord->pallet_number = $palletNumber;
                        //                     $invoiceRecord->scanned_at = now();
                        //                     $invoiceRecord->scanned_by = $operatorName;
                        //                     $invoiceRecord->save();

                        //                     Notification::make()
                        //                     ->title("Pallet number '{$palletNumber}' scanned successfully")
                        //                     ->success()
                        //                     ->send();
                        //                 }

                        //                 PalletValidation::where('plant_id', $plantId)
                        //                         ->where('pallet_number', $palletNumber)
                        //                         ->where('serial_number', $serial)
                        //                         ->forceDelete();

                        //                 $livewire('loadData', $invoiceNumber, $plantId);
                        //             }
                        //     }
                        //     else
                        //     {
                        //         foreach ($allmatchedSerialNumbers as $serial)
                        //         {
                        //             $invoiceRecord = LocatorInvoiceValidation::where('plant_id', $plantId)
                        //                 ->where('invoice_number', $invoiceNumber)
                        //                 ->where('serial_number', $serial)
                        //                 ->first();

                        //             if ($invoiceRecord)
                        //             {
                        //                 $invoiceRecord->scanned_status = 'Scanned';
                        //                 $invoiceRecord->pallet_number = $palletNumber;
                        //                 $invoiceRecord->scanned_at = now();
                        //                 $invoiceRecord->scanned_by = $operatorName;
                        //                 $invoiceRecord->save();

                        //                 Notification::make()
                        //                 ->title("Pallet number '{$palletNumber}' scanned successfully")
                        //                 ->success()
                        //                 ->send();
                        //             }

                        //             PalletValidation::where('plant_id', $plantId)
                        //                     ->where('pallet_number', $palletNumber)
                        //                     ->where('serial_number', $serial)
                        //                     ->forceDelete();

                        //             $this->dispatch('loadData', $invoiceNumber, $plantId);
                        //         }
                        //     }
                        // }
                    })
                ])
                ->columns(5),

            ]);
    }

    public static function table(Table $table): Table
    {
        return $table
            ->columns([
                Tables\Columns\TextColumn::make('No.')
                    ->label('No.')
                    ->alignCenter()
                    ->getStateUsing(function ($record, $livewire, $column, $rowLoop) {
                        $paginator = $livewire->getTableRecords();
                        $perPage = method_exists($paginator, 'perPage') ? $paginator->perPage() : 10;
                        $currentPage = method_exists($paginator, 'currentPage') ? $paginator->currentPage() : 1;
                        return ($currentPage - 1) * $perPage + $rowLoop->iteration;
                    }),
                Tables\Columns\TextColumn::make('plant.name')
                    ->label('Plant')
                    ->alignCenter()
                    ->searchable()
                    ->sortable(),
                Tables\Columns\TextColumn::make('invoice_number')
                    ->label('Invoice Number')
                    ->searchable()
                    ->alignCenter()
                    ->sortable(),
                Tables\Columns\TextColumn::make('serial_number')
                    ->label('Serial Number')
                    ->searchable()
                    ->alignCenter()
                    ->sortable(),
                Tables\Columns\TextColumn::make('pallet_number')
                    ->label('Pallet Number')
                    ->searchable()
                    ->alignCenter()
                    ->sortable(),
                Tables\Columns\TextColumn::make('locator_number')
                    ->label('Locator Number')
                    ->searchable()
                    ->alignCenter()
                    ->sortable(),
                Tables\Columns\TextColumn::make('scanned_status')
                    ->label('Scanned Status')
                    ->searchable()
                    ->alignCenter()
                    ->sortable(),
                Tables\Columns\TextColumn::make('upload_status')
                    ->label('Upload Status')
                    ->searchable()
                    ->alignCenter(),
                Tables\Columns\TextColumn::make('created_by')
                    ->label('Created By')
                    ->alignCenter()
                    ->sortable(),
                Tables\Columns\TextColumn::make('created_at')
                    ->label('Created At')
                    ->dateTime()
                    ->alignCenter()
                    ->sortable(),
                Tables\Columns\TextColumn::make('updated_by')
                    ->label('Updated By')
                    ->alignCenter()
                    ->sortable()
                    ->toggleable(isToggledHiddenByDefault: true),
                Tables\Columns\TextColumn::make('updated_at')
                    ->label('Updated At')
                    ->dateTime()
                    ->alignCenter()
                    ->sortable()
                    ->toggleable(isToggledHiddenByDefault: true),
                Tables\Columns\TextColumn::make('scanned_by')
                    ->label('Scanned By')
                    ->alignCenter()
                    ->sortable(),
                Tables\Columns\TextColumn::make('scanned_at')
                    ->label('Scanned At')
                    ->dateTime()
                    ->alignCenter()
                    ->sortable(),
                Tables\Columns\TextColumn::make('deleted_at')
                    ->dateTime()
                    ->alignCenter()
                    ->sortable()
                    ->toggleable(isToggledHiddenByDefault: true),
            ])

            ->headerActions([
                Tables\Actions\Action::make('import_invoice')
                    ->label('Import Invoice')
                    ->form([
                        Select::make('plant_id')
                        ->options(Plant::pluck('name', 'id')->toArray())
                        ->label('Select Plant')
                        ->required()
                        ->default(function () {
                            return optional(InvoiceValidation::latest()->first())->plant_id;
                        })
                        ->afterStateUpdated(function ($state, callable $set, callable $get) {
                            $set('invoice_serial_number', null);
                        })
                        ->reactive(),

                        FileUpload::make('invoice_serial_number')
                            ->label('Invoice Serial Number')
                            // ->required()
                            ->preserveFilenames() // <- this keeps the original filename
                            ->storeFiles(false)
                            ->reactive()
                            ->required()
                            ->disk('local')
                            ->visible(fn (Get $get) => !empty($get('plant_id')))
                            ->directory('uploads/temp'),
                    ])
                    ->action(function (array $data) {
                        $uploadedFile = $data['invoice_serial_number'];

                        $disk = Storage::disk('local');

                        $plantId = $data['plant_id'];

                        $originalName = $uploadedFile->getClientOriginalName(); // e.g. 3RA0018732.xlsx

                        $invoiceNumber = pathinfo($originalName, PATHINFO_FILENAME);
                        // $invoiceNumber = trim(str_replace('.xlsx', '', $originalName));
                        // $originalNameOnly = pathinfo($originalName, PATHINFO_FILENAME);

                        $folderPath = Configuration::where('c_name', 'INVOICE_FOLDER_PATH')
                        ->value('c_value');

                        $fullFolderPath = "uploads/$folderPath";

                        // Check if the folder exists, if not, create it
                        if (!Storage::disk('local')->exists($fullFolderPath))
                        {
                            Storage::disk('local')->makeDirectory($fullFolderPath);
                        }

                        $path = $uploadedFile->storeAs($fullFolderPath, $originalName, 'local');

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

                        if ($fullPath && file_exists($fullPath))
                        {
                            $rows = Excel::toArray(null, $fullPath)[0];

                            if((count($rows) - 1) <= 0)
                            {
                                Notification::make()
                                    ->title('Invalid Locator Invoice Found')
                                    ->body('Uploaded excel sheet is empty or<br>contains no valid data.')
                                    ->danger()
                                    ->send();

                                if ($disk->exists($path)) {
                                    $disk->delete($path);
                                }
                                return;
                            }

                            $invalidSerialCodes=[];
                            $duplicateSerials = [];
                            $seenSerialNumbers = [];
                            $validRowsFound = false;

                            foreach ($rows as $index => $row)
                            {
                                if ($index === 0) continue;  // Skip header

                                $serialNumber = trim($row[0]);

                                if (empty($serialNumber))
                                {
                                    continue;
                                }
                                else
                                {
                                    if(Str::length($serialNumber) < 13 || !ctype_alnum($serialNumber))
                                    {
                                        $invalidSerialCodes[] = $serialNumber;
                                    }
                                    else
                                    {
                                        if (in_array($serialNumber, $seenSerialNumbers)) {
                                            $duplicateSerials[] = $serialNumber;
                                        }
                                        else
                                        {
                                            $seenSerialNumbers[] = $serialNumber;
                                            $validRowsFound = true;
                                        }
                                    }
                                }
                            }

                            $uniqueSerialCodes = array_unique($invalidSerialCodes);

                            if (!empty($uniqueSerialCodes)) {
                                Notification::make()
                                ->title('Invalid Serial Numbers Found')
                                ->body('The following serial numbers should contain minimum 13 digit alpha numeric values:<br>' . implode(', ', $uniqueSerialCodes))
                                ->danger()
                                ->send();
                                if ($disk->exists($path)) {
                                    $disk->delete($path);
                                }
                                return;
                            }

                            $duplicateSerialCodes = array_unique($duplicateSerials);

                            if (!empty($duplicateSerialCodes)) {
                                Notification::make()
                                    ->title('Duplicate Serial Numbers Found')
                                    ->body('The following serial numbers are already exist in imported excel:<br>' . implode(', ', $duplicateSerialCodes))
                                    ->danger()
                                    ->send();
                                if ($disk->exists($path)) {
                                    $disk->delete($path);
                                }
                                return;
                            }

                            if (!$validRowsFound) {
                                Notification::make()
                                    ->title('Invalid Locator Invoice Found')
                                    ->body('Uploaded excel sheet is empty or<br>contains no valid data.')
                                    ->danger()
                                    ->send();
                                    if ($disk->exists($path)) {
                                        $disk->delete($path);
                                    }
                                return;
                            }

                            $serialsToCheck = $seenSerialNumbers;

                            $existingSerials = LocatorInvoiceValidation::whereIn('serial_number', $serialsToCheck)
                                ->where('invoice_number', '!=', $invoiceNumber)
                                ->where('plant_id', $plantId)
                                ->pluck('serial_number')
                                ->toArray();

                            if (!empty($existingSerials)) {
                                Notification::make()
                                    ->title('Duplicate Serial Numbers Found')
                                    ->body('The following serial numbers already exist with a different invoice number:<br>' . implode(', ', $existingSerials))
                                    ->danger()
                                    ->send();
                                if ($disk->exists($path))
                                {
                                    $disk->delete($path);
                                }
                                return;
                            }
                            else
                            {
                                 // Save full file path to session
                                session(['uploaded_invoice_path' => $fullPath]);
                                Notification::make()
                                    ->title('Success: Invoice imported successfully.')
                                    ->success()
                                    ->send();
                            }
                        }
                    })
                    ->visible(function() {
                        return Filament::auth()->user()->can('view import dispatch serial invoice validation');
                    }),

                ImportAction::make()
                    ->importer(LocatorInvoiceValidationImporter::class)
                    ->visible(function() {
                        return Filament::auth()->user()->can('view import locator invoice validation');
                    }),
                ExportAction::make()
                    ->exporter(LocatorInvoiceValidationExporter::class)
                    ->visible(function() {
                        return Filament::auth()->user()->can('view export locator invoice validation');
                    }),
            ])

            ->filters([
                Tables\Filters\TrashedFilter::make(),
            ])
            ->actions([
                Tables\Actions\ViewAction::make(),
                Tables\Actions\EditAction::make(),
            ])
            ->bulkActions([
                Tables\Actions\BulkActionGroup::make([
                    Tables\Actions\DeleteBulkAction::make(),
                    Tables\Actions\ForceDeleteBulkAction::make(),
                    Tables\Actions\RestoreBulkAction::make(),
                ]),
            ]);
    }

    public static function getRelations(): array
    {
        return [
            //
        ];
    }

    public static function getPages(): array
    {
        return [
            'index' => Pages\ListLocatorInvoiceValidations::route('/'),
            'create' => Pages\CreateLocatorInvoiceValidation::route('/create'),
            'view' => Pages\ViewLocatorInvoiceValidation::route('/{record}'),
            'edit' => Pages\EditLocatorInvoiceValidation::route('/{record}/edit'),
        ];
    }

    public static function getEloquentQuery(): Builder
    {
        return parent::getEloquentQuery()
            ->withoutGlobalScopes([
                SoftDeletingScope::class,
            ]);
    }
}