<?php

namespace App\Filament\Resources;

use App\Filament\Resources\QualityValidationResource\Pages;
use App\Filament\Resources\QualityValidationResource\RelationManagers;
use App\Models\QualityValidation;
use Closure;
use Filament\Forms;
use Filament\Forms\Components\DatePicker;
use Filament\Forms\Components\DateTimePicker;
use Filament\Forms\Components\TextInput;
use Filament\Forms\Form;
use Filament\Resources\Resource;
use Filament\Tables;
use Filament\Tables\Filters\SelectFilter;
use Filament\Tables\Table;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\Factories\Relationship;
use Illuminate\Database\Eloquent\SoftDeletingScope;
use Filament\Tables\Filters\Filter;


class QualityValidationResource extends Resource
{
    protected static ?string $model = QualityValidation::class;

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

    protected static ?string $navigationGroup = 'Display';
    public $isSubmitted = false;

    public static function form(Form $form): Form
    {
        return $form
            ->schema([
                Forms\Components\Select::make('plant_id')
                    ->relationship('plant', 'name')
                    ->reactive()
                    ->afterStateUpdated(fn (callable $set) => [
                        $set('item_id', null),
                        $set('validationError', null),
                    ])
                    ->required(),
                Forms\Components\Hidden::make('sticker_master_id')
                   // ->relationship('stickerMaster', 'id')
                    ->required(),
                Forms\Components\TextInput::make('production_order')
                    ->required(),
                Forms\Components\TextInput::make('item_id')
                     ->label('Item Code')
                     ->placeholder('Scan the valid QR code')
                     ->reactive()
                     ->required()
                     ->afterStateUpdated(function (callable $set, callable $get, ?string $state) {

                         // Reset visibility of all serial and part validation fields
                        $serialFields = [
                            'serial_number_motor', 'serial_number_pump', 'serial_number_pumpset',
                            'pack_slip_motor', 'pack_slip_pump', 'pack_slip_pumpset',
                            'name_plate_motor', 'name_plate_pump', 'name_plate_pumpset',
                            'tube_sticker_motor', 'tube_sticker_pump', 'tube_sticker_pumpset',
                            'warranty_card'
                        ];

                        $partValidationColumns = [
                            'part_validation1', 'part_validation2', 'part_validation3',
                            'part_validation4', 'part_validation5'
                        ];

                        foreach ($serialFields as $field) {
                            $set($field . '_visible', false);
                            $set($field, null);
                        }

                        foreach ($partValidationColumns as $column) {
                            $set($column . '_visible', false);
                            $set($column, null);
                        }

                        // Proceed with validation logic for new scanned QR code
                        if (!$state || trim($state) === '') {
                            $set('validationError', null);
                            return;
                        }

                        // Check if QR format contains '|'
                        if (strpos($state, '|') === false) {
                            $set('validationError', 'Scan valid QR code. (Ex: Item_Code|Serial_Number )');
                            return;
                        }

                        if (!preg_match('/^[a-zA-Z0-9]{6,}+\|[1-9][a-zA-Z0-9]{8,}+(\|)?$/', $state)) {
                            if (strpos($state, '|') === false) {
                                $set('validationError', 'Scan valid QR code. (Ex: Item_Code|Serial_Number )');
                                $set('item_id', null);
                                $set('item_description', null);
                                $set('serial_number', null);
                                return;
                            }
                            else
                            {
                                $splits = explode('|', $state);
                                $iCode = trim($splits[0]);
                                $sNumber = isset($splits[1]) ? trim($splits[1]) : null;

                                if (!ctype_alnum($iCode)) {
                                    $set('validationError', 'Item code must contain alpha-numeric values.');
                                    return;
                                }
                                else if (strlen($iCode) < 6) {
                                    $set('validationError', 'Item code must be at least 6 digits.');
                                    return;
                                }
                                else if (!ctype_alnum($sNumber)) {
                                    $set('validationError', 'Serial Number must contain alpha-numeric values.');
                                    return;
                                }
                                else if (strlen($sNumber) < 9) {
                                    $set('validationError', 'Serial Number must be at least 9 digits.');
                                    return;
                                }
                            }

                            $set('validationError', 'Scan valid QR code. (Ex: Item_Code|Serial_Number )');
                            return;
                        }
                        else
                        {
                            $set('validationError', null);
                        }

                        $parts = explode('|', $state);

                        $itemCode = trim($parts[0]); // Extract item code // 123456|123456789

                        $serialNumber = trim($parts[1]);

                        // Store serial number before resetting fields
                        $previousSerialNumber = $serialNumber;

                        $previousItemCode = $itemCode;

                        if (strlen($itemCode) < 6) {
                            $set('validationError', 'Item code must be at least 6 digits.');
                            return;
                        }
                        else if (!ctype_alnum($itemCode)) {
                            $set('validationError', 'Item Code should contain alpha-numeric values.');
                            $set('item_id', null);
                            return;
                        }
                        else if ($serialNumber === '') {
                            $set('validationError', 'Waiting for full QR scan...');
                            return; // Do not clear item_id, just wait for full input
                        }
                        else if (strlen($serialNumber) < 9) {
                            $set('validationError', 'Serial Number must be at least 9 digits.');
                            return;
                        }
                        else if (!ctype_alnum($serialNumber)) {
                            $set('validationError', 'Serial Number should contain alpha-numeric values.');
                            $set('item_id', null);
                            return;
                        }
                        else
                        {
                            $set('validationError', null);
                        }

                        $plantId = $get('plant_id'); // Get selected plant

                        if (!$plantId) {
                            $set('validationError', 'Please select a plant first.');
                            $set('item_id', null);
                            return;
                        }

                        // Check if the item exists for the selected plant
                        $stickerMaster = \App\Models\StickerMaster::where('plant_id', $plantId)
                            ->whereHas('item', function ($query) use ($itemCode) {
                                $query->where('code', $itemCode);
                            })->first();


                        if (!$stickerMaster) {
                            $set('validationError', 'Item code does not exist in master data.');
                            $set('sticker_master_id', null);
                            return;
                        }
                        else
                        {
                            $set('sticker_master_id', $stickerMaster->id);
                            $set('item_id', $itemCode);
                        }


                        // Check if user input matches the database values
                        foreach ($partValidationColumns as $field) {
                            if ($get("{$field}_visible")) { // Only validate visible fields
                                $userInput = $get($field); // Get user input
                                $expectedValue = $stickerMaster->$field; // Get expected value from DB

                                if ($userInput !== null && $userInput !== $expectedValue) {
                                    $set('validationError', "Invalid input for $field. Expected: $expectedValue");
                                    return; // Stop execution if any validation fails
                                }
                            }
                        }

                        // $serialExists = QualityValidation::where('sticker_master_id', $stickerMaster->id)
                        // ->where(function ($query) use ($serialNumber, $serialFields) {
                        //     foreach ($serialFields as $column) {
                        //         $query->orWhere($column, $serialNumber);
                        //     }
                        // })->exists();

                        // if ($serialExists) {
                        //     $set('validationError', 'Already scanning process completed.');
                        //     $set('item_id', "$previousItemCode|$previousSerialNumber"); // Restore original QR code
                        //     return;
                        // }

                        // Check if the serial number exists in any column of any row
                        $serialExists = QualityValidation::where(function ($query) use ($serialNumber, $serialFields) {
                            foreach ($serialFields as $column) {
                                $query->orWhere($column, $serialNumber);
                            }
                        })->exists();


                        if ($serialExists) {
                            $set('validationError', 'Serial number already exists in quality validation.');
                            // Restore the serial number before returning
                           $set('item_id', "$itemCode|$previousSerialNumber"); // Reinsert full QR code
                            return;
                        }

                        // Clear validation error if all inputs match
                         $set('validationError', null);

                         // Filter columns with value `1`
                        $visibleColumns = [];
                        foreach ($serialFields as $column) {
                            if ($stickerMaster->$column === 1) {
                                $visibleColumns[] = $column;
                            }
                        }

                        // Filter part validation columns that are not `null`
                        $visiblePartValidations = [];
                        foreach ($partValidationColumns as $column) {
                            if ($stickerMaster->$column !== null) {
                                $visiblePartValidations[] = $column;
                            }
                        }

                        foreach ($serialFields as $column) {
                            if ($stickerMaster->$column == 1) {
                                $set($column . '_visible', true);
                            } else {
                                $set($column . '_visible', false);
                            }
                        }

                        foreach ($partValidationColumns as $column) {
                            if ($stickerMaster->$column !== null) {
                                $set($column . '_visible', true);  // Separate key for visibility
                            } else {
                                $set($column . '_visible', false);
                            }
                        }

                        // Assign serial number to only visible text inputs
                        foreach ($serialFields as $field) {
                            if ($get("{$field}_visible")) {
                                $set($field, $serialNumber);
                            }
                        }

                    })
                    ->extraAttributes(fn ($get) => [
                        'class' => $get('validationError') ? 'border-red-500' : '',
                    ])
                    ->hint(fn ($get) => $get('validationError') ? $get('validationError') : null)
                    ->hintColor('danger'),


                 Forms\Components\TextInput::make('serial_number_motor')
                    ->hidden(fn (callable $get) => !$get('serial_number_motor_visible'))  // Controls visibility
                    ->default(''), // Keeps input empty

                 Forms\Components\TextInput::make('serial_number_pump')
                     ->hidden(fn (callable $get) => !$get('serial_number_pump_visible'))
                     ->default(''),

                 Forms\Components\TextInput::make('serial_number_pumpset')
                     ->hidden(fn (callable $get) => !$get('serial_number_pumpset_visible'))
                     ->default(''),

                 Forms\Components\TextInput::make('pack_slip_motor')
                     ->hidden(fn (callable $get) => !$get('pack_slip_motor_visible'))
                     ->default(''),

                 Forms\Components\TextInput::make('pack_slip_pump')
                     ->hidden(fn (callable $get) => !$get('pack_slip_pump_visible'))
                     ->default(''),

                 Forms\Components\TextInput::make('pack_slip_pumpset')
                     ->hidden(fn (callable $get) => !$get('pack_slip_pumpset_visible'))
                     ->default(''),

                 Forms\Components\TextInput::make('name_plate_motor')
                     ->hidden(fn (callable $get) => !$get('name_plate_motor_visible'))
                     ->default(''),

                 Forms\Components\TextInput::make('name_plate_pump')
                     ->hidden(fn (callable $get) => !$get('name_plate_pump_visible'))
                     ->default(''),

                 Forms\Components\TextInput::make('name_plate_pumpset')
                     ->hidden(fn (callable $get) => !$get('name_plate_pumpset_visible'))
                     ->default(''),

                 Forms\Components\TextInput::make('tube_sticker_motor')
                     ->hidden(fn (callable $get) => !$get('tube_sticker_motor_visible'))
                     ->default(''),

                 Forms\Components\TextInput::make('tube_sticker_pump')
                     ->hidden(fn (callable $get) => !$get('tube_sticker_pump_visible'))
                     ->default(''),

                 Forms\Components\TextInput::make('tube_sticker_pumpset')
                     ->hidden(fn (callable $get) => !$get('tube_sticker_pumpset_visible'))
                     ->default(''),

                 Forms\Components\TextInput::make('warranty_card')
                     ->hidden(fn (callable $get) => !$get('warranty_card_visible'))
                     ->default(''),

                 Forms\Components\TextInput::make('part_validation1')
                     ->hidden(fn (callable $get) => !$get('part_validation1_visible'))
                     ->default('')
                     ->reactive()
                     ->required()
                     ->afterStateUpdated(function (callable $set, callable $get, ?string $state) {

                        $stickerMasterId = $get('sticker_master_id');
                        if (!$stickerMasterId) {
                            return;
                        }

                        $stickerMaster = \App\Models\StickerMaster::find($stickerMasterId);
                        if (!$stickerMaster) {
                            return;
                        }

                        $expectedValue = $stickerMaster->part_validation1;

                         // If input is empty, reset the error
                        if ($state === null || trim($state) === '') {
                            $set('part_validation1_error', null);
                            return;
                        }

                        if ($state === $expectedValue)
                        {
                            $set('part_validation1_error', null);
                        }
                        else
                        {
                            $set('part_validation1_error', "Invalid input for part validation 1."); // Expected: $expectedValue
                        }
                    })
                    ->extraAttributes(fn ($get) => [
                        'class' => $get('part_validation1_error') ? 'border-red-500' : '',
                    ])
                    ->hint(fn ($get) => $get('part_validation1_error'))
                    ->hintColor('danger'),


                     Forms\Components\TextInput::make('part_validation2')
                     ->hidden(fn (callable $get) => !$get('part_validation2_visible'))
                     ->default('')
                     ->required()
                     ->afterStateUpdated(function (callable $set, callable $get, ?string $state) {

                        $stickerMasterId = $get('sticker_master_id');
                        if (!$stickerMasterId) {
                            return;
                        }

                        $stickerMaster = \App\Models\StickerMaster::find($stickerMasterId);
                        if (!$stickerMaster) {
                            return;
                        }

                        $expectedValue = $stickerMaster->part_validation2;

                         // If input is empty, reset the error
                        if ($state === null || trim($state) === '') {
                            $set('part_validation2_error', null);
                            return;
                        }

                        // If input is empty, do not show an error

                        if ($state === $expectedValue)
                        {
                            $set('part_validation2_error', null);
                        }
                        else
                        {
                            $set('part_validation2_error', "Invalid input for part validation 2."); // Expected: $expectedValue
                        }
                    })
                    ->extraAttributes(fn ($get) => [
                        'class' => $get('part_validation2_error') ? 'border-red-500' : '',
                    ])
                    ->hint(fn ($get) => $get('part_validation2_error'))
                    ->hintColor('danger'),

                     Forms\Components\TextInput::make('part_validation3')
                     ->hidden(fn (callable $get) => !$get('part_validation3_visible'))
                     ->default('')
                     ->required()
                     ->afterStateUpdated(function (callable $set, callable $get, ?string $state) {
                        $stickerMasterId = $get('sticker_master_id');
                        if (!$stickerMasterId) {
                            return;
                        }

                        $stickerMaster = \App\Models\StickerMaster::find($stickerMasterId);
                        if (!$stickerMaster) {
                            return;
                        }

                        $expectedValue = $stickerMaster->part_validation3;

                         // If input is empty, reset the error
                        if ($state === null || trim($state) === '') {
                            $set('part_validation3_error', null);
                            return;
                        }

                        // If input is empty, do not show an error

                        if ($state === $expectedValue)
                        {
                            $set('part_validation3_error', null);
                        }
                        else
                        {
                            $set('part_validation3_error', "Invalid input for part validation 3."); // Expected: $expectedValue
                        }
                    })
                    ->extraAttributes(fn ($get) => [
                        'class' => $get('part_validation3_error') ? 'border-red-500' : '',
                    ])
                    ->hint(fn ($get) => $get('part_validation3_error'))
                    ->hintColor('danger'),

                     Forms\Components\TextInput::make('part_validation4')
                     ->hidden(fn (callable $get) => !$get('part_validation4_visible'))
                     ->default('')
                     ->required()
                     ->afterStateUpdated(function (callable $set, callable $get, ?string $state) {
                        $stickerMasterId = $get('sticker_master_id');
                        if (!$stickerMasterId) {
                            return;
                        }

                        $stickerMaster = \App\Models\StickerMaster::find($stickerMasterId);
                        if (!$stickerMaster) {
                            return;
                        }

                        $expectedValue = $stickerMaster->part_validation4;

                         // If input is empty, reset the error
                        if ($state === null || trim($state) === '') {
                            $set('part_validation4_error', null);
                            return;
                        }

                        // If input is empty, do not show an error

                        if ($state === $expectedValue)
                        {
                            $set('part_validation4_error', null);
                        }
                        else
                        {
                            $set('part_validation4_error', "Invalid input for part validation 4."); // Expected: $expectedValue
                        }

                    })
                    ->extraAttributes(fn ($get) => [
                        'class' => $get('part_validation4_error') ? 'border-red-500' : '',
                    ])
                    ->hint(fn ($get) => $get('part_validation4_error'))
                    ->hintColor('danger'),

                     Forms\Components\TextInput::make('part_validation5')
                     ->hidden(fn (callable $get) => !$get('part_validation5_visible'))
                     ->default('')
                     ->required()
                     ->afterStateUpdated(function (callable $set, callable $get, ?string $state) {
                        $stickerMasterId = $get('sticker_master_id');
                        if (!$stickerMasterId) {
                            return;
                        }

                        $stickerMaster = \App\Models\StickerMaster::find($stickerMasterId);
                        if (!$stickerMaster) {
                            return;
                        }

                        $expectedValue = $stickerMaster->part_validation4;

                         // If input is empty, reset the error
                        if ($state === null || trim($state) === '') {
                            $set('part_validation5_error', null);
                            return;
                        }

                        // If input is empty, do not show an error

                        if ($state === $expectedValue)
                        {
                            $set('part_validation5_error', null);
                        }
                        else
                        {
                            $set('part_validation5_error', "Invalid input for part validation 5."); // Expected: $expectedValue
                        }

                    })
                    ->extraAttributes(fn ($get) => [
                        'class' => $get('part_validation5_error') ? 'border-red-500' : '',
                    ])
                    ->hint(fn ($get) => $get('part_validation5_error'))
                    ->hintColor('danger'),
            ]);
    }

    public static function table(Table $table): Table
    {
        return $table
            ->searchable()
            ->columns([
                Tables\Columns\TextColumn::make('id')
                    ->label('ID')
                    ->numeric()
                    ->sortable(),
                Tables\Columns\TextColumn::make('plant.name')
                    ->sortable(),
                Tables\Columns\TextColumn::make('stickerMaster.item.code')
                    ->label('Item Code')
                    ->sortable(),
                Tables\Columns\TextColumn::make('production_order')
                    ->label('Production Order')
                    ->sortable(),
                Tables\Columns\TextColumn::make('serial_number_motor')
                    ->sortable(),
                Tables\Columns\TextColumn::make('serial_number_pump')
                    ->sortable(),
                Tables\Columns\TextColumn::make('serial_number_pumpset')
                    ->sortable(),
                Tables\Columns\TextColumn::make('pack_slip_motor')
                    ->sortable(),
                Tables\Columns\TextColumn::make('pack_slip_pump')
                    ->sortable(),
                Tables\Columns\TextColumn::make('pack_slip_pumpset')
                   ->sortable(),
                Tables\Columns\TextColumn::make('name_plate_motor')
                   ->sortable(),
                Tables\Columns\TextColumn::make('name_plate_pump')
                   ->sortable(),
                Tables\Columns\TextColumn::make('name_plate_pumpset')
                   ->sortable(),
                Tables\Columns\TextColumn::make('tube_sticker_motor')
                   ->sortable(),
                Tables\Columns\TextColumn::make('tube_sticker_pump')
                   ->sortable(),
                Tables\Columns\TextColumn::make('tube_sticker_pumpset')
                   ->sortable(),
                Tables\Columns\TextColumn::make('warranty_card')
                   ->sortable(),
                Tables\Columns\TextColumn::make('part_validation1')
                   ->sortable(),
                Tables\Columns\TextColumn::make('part_validation2')
                   ->sortable(),
                Tables\Columns\TextColumn::make('part_validation3')
                   ->sortable(),
                Tables\Columns\TextColumn::make('part_validation4')
                   ->sortable(),
                Tables\Columns\TextColumn::make('part_validation5')
                   ->sortable(),
                Tables\Columns\TextColumn::make('created_at')
                    ->dateTime()
                    ->sortable()
                    ->toggleable(isToggledHiddenByDefault: true),
                Tables\Columns\TextColumn::make('updated_at')
                    ->dateTime()
                    ->sortable()
                    ->toggleable(isToggledHiddenByDefault: true),
                Tables\Columns\TextColumn::make('deleted_at')
                    ->dateTime()
                    ->sortable()
                    ->toggleable(isToggledHiddenByDefault: true),
            ])
            ->filters([

                Tables\Filters\TrashedFilter::make(),
                SelectFilter::make('item_code')
                ->relationship('stickerMaster.item', 'code')
                ->label('Filter by item code')
                ->searchable(),

                Filter::make('production_order')
                ->label('Filter by Production Order')
                ->form([
                    TextInput::make('production_order')
                        ->placeholder('Enter Production Order'),

                ])
                ->query(function ($query, array $data) {
                    return $query
                        ->when(
                            $data['production_order'] ?? null,
                            fn ($q) => $q->where('production_order', 'like', '%' . $data['production_order'] . '%')
                        );
                })

                // This function adds indicators to show applied filters in the UI.
                // It helps users see what filters are currently active.

                ->indicateUsing(function (array $data) {
                    return empty($data['production_order']) ? [] : ['Production Order: ' . $data['production_order']];
                }),

                // Created Date Range Filter
                Filter::make('created_at')
                ->form([
                    DateTimePicker::make('created_from')
                        ->label('Created From')
                        ->native(false), // Optional: Use a nice date picker UI

                    DateTimePicker::make('created_to')
                        ->label('Created To')
                        ->native(false),
                ])
                ->query(function ($query, array $data) {
                    return $query
                        ->when(
                            $data['created_from'] ?? null,
                            fn ($q) => $q->where('created_at', '>=', $data['created_from'])
                        )
                        ->when(
                            $data['created_to'] ?? null,
                            fn ($q) => $q->where('created_at', '<=', $data['created_to'])
                        );
                })
                ->indicateUsing(function (array $data) {
                    $indicators = [];
                    if (!empty($data['created_from'])) {
                        $indicators[] = 'From: ' . $data['created_from'];
                    }
                    if (!empty($data['created_to'])) {
                        $indicators[] = 'To: ' . $data['created_to'];
                    }
                    return $indicators;
                }),
            ])
            ->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\ListQualityValidations::route('/'),
            'create' => Pages\CreateQualityValidation::route('/create'),
            'view' => Pages\ViewQualityValidation::route('/{record}'),
            'edit' => Pages\EditQualityValidation::route('/{record}/edit'),
        ];
    }

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