<?php

namespace App\Filament\Resources;

use App\Filament\Imports\ProductionLineStopImporter;
use App\Filament\Resources\ProductionLineStopResource\Pages;
use App\Filament\Resources\ProductionLineStopResource\RelationManagers;
use App\Models\ProductionLineStop;
use Filament\Forms;
use Filament\Forms\Form;
use Filament\Forms\Get;
use Filament\Resources\Resource;
use Filament\Tables;
use Filament\Tables\Actions\ImportAction;
use Filament\Tables\Table;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\SoftDeletingScope;
use Carbon\Carbon;
use Filament\Forms\Components\Section;

class ProductionLineStopResource extends Resource
{
    protected static ?string $model = ProductionLineStop::class;

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

    // protected static ?string $navigationParentItem = 'Display Transactions';

    protected static ?string $navigationGroup = 'Production';

    public static function form(Form $form): Form
    {

        return $form
            ->schema([
                Section::make('')
                    ->schema([
                        Forms\Components\Select::make('plant_id')
                            ->relationship('plant', 'name')
                            ->required()
                            // ->nullable()
                            ->reactive()
                            ->disabled(fn (Get $get) => !empty($get('id')))
                            // ->afterStateUpdated(fn ($set) => $set('block_name', null))
                            ->afterStateUpdated(function ($state, callable $set, callable $get) {
                                $plantId = $get('plant_id');
                                $set('block_name', null);
                                if (!$plantId) {
                                    $set('plsPlantError', 'Please select a plant first.');
                                    return;
                                }
                                else
                                {
                                    $set('plsPlantError', null);
                                }
                            })
                            ->extraAttributes(fn ($get) => [
                                'class' => $get('plsPlantError') ? 'border-red-500' : '',
                            ])
                            ->hint(fn ($get) => $get('plsPlantError') ? $get('plsPlantError') : null)
                            ->hintColor('danger'),
                        Forms\Components\Select::make('block_name')
                            ->required()
                            // ->nullable()
                            ->label('Block')
                            ->options(function (callable $get) {
                                if (!$get('plant_id')) {
                                    return [];
                                }

                                return \App\Models\Block::where('plant_id', $get('plant_id'))
                                    ->pluck('name', 'id')
                                    ->toArray();
                            })
                            ->reactive()
                            // ->default(function (callable $get, callable $set) {
                            //     if ($get('id')) {
                            //         $getShift = ProductionLineStop::where('id', $get('id'))->first();
                            //         $getBlock = \App\Models\Shift::where('id', $getShift->shift_id)->first();
                            //         // dd($getBlock->block_id);
                            //         $set('block_name', $getBlock->block_id);
                            //     }
                            //     // return null; // Return null if no default value should be set
                            // })
                            // ->afterStateUpdated(fn ($set) => $set('shift_id', null))
                            ->afterStateUpdated(function ($state, callable $set, callable $get) {
                                if($get('id'))
                                {
                                    $getShift = ProductionLineStop::where('id', $get('id'))->first();
                                    $getBlock = \App\Models\Shift::where('id', $getShift->shift_id)->first();
                                    if($getBlock->block_id)
                                    {
                                        $set('block_name', $getBlock->block_id);
                                        $set('plsBlockError', null);
                                    }
                                }

                                $blockId = $get('block_name');
                                $set('shift_id', null);

                                if (!$blockId) {
                                    $set('plsBlockError', 'Please select a block first.');
                                    return;
                                }
                                else
                                {
                                    $set('plsBlockError', null);
                                }
                            })
                            ->extraAttributes(fn ($get) => [
                                'class' => $get('plsBlockError') ? 'border-red-500' : '',
                            ])
                            ->hint(fn ($get) => $get('plsBlockError') ? $get('plsBlockError') : null)
                            ->hintColor('danger'),
                        Forms\Components\Select::make('shift_id')
                            ->relationship('shift', 'name')
                            ->required()
                            // ->nullable()
                            // ->options(fn (callable $get) =>
                            // \App\Models\Shift::where('plant_id', $get('plant_id'))
                            //     ->pluck('name', 'id')
                            //     ->toArray() // Convert collection to array
                            // )
                            ->options(function (callable $get) {
                                if (!$get('plant_id') || !$get('block_name')) {
                                    return [];
                                }
                                // // Get the block ID based on plant_id and block_name
                                // $block = \App\Models\Block::where('plant_id', $get('plant_id'))
                                // ->where('name', $get('block_name'))
                                // ->first();

                                // if (!$block) {
                                //     return [];
                                // }

                                // return \App\Models\Shift::where('plant_id', $get('plant_id'))
                                //     ->pluck('name', 'id')
                                //     ->toArray();
                                return \App\Models\Shift::where('plant_id', $get('plant_id'))
                                    ->where('block_id', $get('block_name'))
                                    ->pluck('name', 'id')
                                    ->toArray();
                            })
                            ->reactive()
                            // ->afterStateUpdated(fn ($set) => $set('line_id', null))
                            ->afterStateUpdated(function ($state, callable $set, callable $get) {
                                if($get('id'))
                                {
                                    $getShift = ProductionLineStop::where('id', $get('id'))->first();
                                    if($getShift->shift_id)
                                    {
                                        $set('shift_id', $getShift->shift_id);
                                        $set('plsShiftError', null);
                                    }
                                }

                                $shiftId = $get('shift_id');
                                $set('line_id', null);

                                if (!$shiftId) {
                                    $set('plsShiftError', 'Please select a shift first.');
                                    return;
                                }
                                else
                                {
                                    $set('plsShiftError', null);
                                }
                            })
                            ->extraAttributes(fn ($get) => [
                                'class' => $get('plsShiftError') ? 'border-red-500' : '',
                            ])
                            ->hint(fn ($get) => $get('plsShiftError') ? $get('plsShiftError') : null)
                            ->hintColor('danger'),
                        Forms\Components\Select::make('line_id')
                            ->relationship('line', 'name')
                            ->required()
                            // ->nullable()
                            // ->options(fn (callable $get) =>
                            // \App\Models\Line::where('plant_id', $get('plant_id'))
                            //     ->pluck('name', 'id')
                            //     ->toArray() // Convert collection to array
                            // )
                            ->options(function (callable $get) {
                                if (!$get('plant_id') || !$get('block_name') || !$get('shift_id')) {
                                    return [];
                                }

                                return \App\Models\Line::where('plant_id', $get('plant_id'))
                                    ->pluck('name', 'id')
                                    ->toArray();
                            })
                            ->reactive()
                            ->afterStateUpdated(function ($state, callable $set, callable $get) {
                                if($get('id'))
                                {
                                    $getShift = ProductionLineStop::where('id', $get('id'))->first();
                                    if($getShift->line_id)
                                    {
                                        $set('line_id', $getShift->line_id);
                                        $set('plsLineError', null);
                                    }
                                }

                                $lineId = $get('line_id');

                                if (!$lineId) {
                                    $set('plsLineError', 'Please select a line first.');
                                    return;
                                }
                                else
                                {
                                    $set('plsLineError', null);
                                }
                            })
                            ->extraAttributes(fn ($get) => [
                                'class' => $get('plsLineError') ? 'border-red-500' : '',
                            ])
                            ->hint(fn ($get) => $get('plsLineError') ? $get('plsLineError') : null)
                            ->hintColor('danger'),
                        // Forms\Components\Select::make('linestop_id')
                        //     ->label('Line Stop Code')
                        //     ->relationship('linestop', 'code')
                        //     ->searchable()
                        //     ->required()
                        //     ->nullable()
                        //     ->reactive(),
                        Forms\Components\Select::make('linestop_id')
                            ->label('Line Stop Code')
                            // ->options(fn (callable $get) =>
                            // \App\Models\LineStop::where('id', $get('linestop_id'))
                            //     ->pluck('code', 'id')
                            // )
                            ->placeholder('Scan the valid code')
                            ->options(fn () => \App\Models\LineStop::pluck('code', 'id'))
                            ->required()
                            // ->nullable()
                            // ->reactive()
                            ->searchable()
                            ->live(debounce: 500) // Enable live updates
                            ->afterStateUpdated(function ($state, callable $set, callable $get) {
                                $lineStopId = $get('linestop_id');   // Get entered linestop_id

                                // Ensure `linestop_id` is not cleared
                                if (!$lineStopId) {
                                    $set('lineStop_reason', null);
                                    return;
                                }

                                // Check if item exists for the selected plant
                                $lineStop = \App\Models\LineStop::where('id', $lineStopId)
                                    ->where('id', $lineStopId)
                                    ->first();

                                $set('lineStop_reason', $lineStop?->reason ?? null);

                            }),
                        Forms\Components\TextInput::make('lineStop_reason')
                            ->label('Line Stop Reason')
                            ->required()
                            ->reactive()
                            ->readOnly(true),
                        Forms\Components\DateTimePicker::make('from_datetime')
                            ->label('From DateTime')
                            ->required()
                            ->reactive()
                            ->afterStateUpdated(fn ($state, callable $set, callable $get) =>
                                    self::updateStopDuration($get, $set)
                                ),
                        Forms\Components\DateTimePicker::make('to_datetime')
                            ->label('To DateTime')
                            ->required()
                            ->after('from_datetime')
                            ->reactive()
                            ->afterStateUpdated(fn ($state, callable $set, callable $get) =>
                                self::updateStopDuration($get, $set)  //self means it calling the function within the class
                            ),
                        Forms\Components\TextInput::make('stop_hour')
                            ->required()
                            ->label( 'Stop Hour')
                            // ->dehydrated(false) // Don't send to backend
                            ->readOnly(true)
                            ->numeric(),
                        Forms\Components\TextInput::make('stop_min')
                            ->required()
                            ->label('Stop Minute')
                            // ->dehydrated(false)
                            ->readOnly(true)
                            ->numeric(),
                        Forms\Components\TextInput::make('id')
                            ->hidden()
                            ->readOnly(),
                    ])
                    ->columns(2),
            ]);
    }

    public static function updateStopDuration(callable $get, callable $set)
    {
        $from = $get('from_datetime');
        $to = $get('to_datetime');

       // Carbon is a PHP date and time library.

        if ($from && $to) {
            $fromTime = Carbon::parse($from); //Carbon::parse($from) converts the from datetime string into a Carbon objec
            $toTime = Carbon::parse($to);

            if ($fromTime->lt($toTime)) {
                $diffInMinutes = $fromTime->diffInMinutes($toTime);
                // $set('stop_hour', floor($diffInMinutes / 60));
                // $set('stop_min', $diffInMinutes % 60);
                if((floor($diffInMinutes / 60) === 0.0) && ($diffInMinutes % 60 === 0))
                {
                    $set('stop_hour', null);
                    $set('stop_min', null);
                }
                else
                {
                    $set('stop_hour', floor($diffInMinutes / 60));
                    $set('stop_min', $diffInMinutes % 60);
                }
            } else {
                $set('stop_hour', null);
                $set('stop_min', null);
            }
        }
    }

    public static function table(Table $table): Table
    {
        return $table
            ->columns([
                Tables\Columns\TextColumn::make('id')
                    ->label('ID')
                    ->numeric()
                    ->sortable(),
                Tables\Columns\TextColumn::make('linestop.code')
                    ->sortable(),
                Tables\Columns\TextColumn::make('linestop.reason')
                    ->sortable(),
                Tables\Columns\TextColumn::make('from_datetime')
                    ->dateTime()
                    ->sortable(),
                Tables\Columns\TextColumn::make('to_datetime')
                    ->dateTime()
                    ->sortable(),
                Tables\Columns\TextColumn::make('stop_hour')
                    ->numeric()
                    ->sortable(),
                Tables\Columns\TextColumn::make('stop_min')
                    ->numeric()
                    ->sortable(),
                Tables\Columns\TextColumn::make('line.name')
                    ->sortable(),
                Tables\Columns\TextColumn::make('shift.name')
                    ->sortable(),
                Tables\Columns\TextColumn::make('plant.name')
                    ->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(),
            ])
            ->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(),
                ]),
            ])
            ->headerActions([
                ImportAction::make()
                ->importer(ProductionLineStopImporter::class),
            ]);
    }

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

    public static function getPages(): array
    {
        return [
            'index' => Pages\ListProductionLineStops::route('/'),
            'create' => Pages\CreateProductionLineStop::route('/create'),
            'view' => Pages\ViewProductionLineStop::route('/{record}'),
            'edit' => Pages\EditProductionLineStop::route('/{record}/edit'),
        ];
    }

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