<?php

namespace App\Filament\Resources;

use AlperenErsoy\FilamentExport\Actions\FilamentExportBulkAction;
use App\Filament\Exports\ProductionLineStopExporter;
use App\Filament\Imports\ProductionLineStopImporter;
use App\Filament\Resources\ProductionLineStopResource\Pages;
use App\Filament\Resources\ProductionLineStopResource\RelationManagers;
use App\Models\Block;
use App\Models\Line;
use App\Models\LineStop;
use App\Models\Plant;
use App\Models\ProductionLineStop;
use App\Models\Shift;
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\Facades\Filament;
use Filament\Forms\Components\DateTimePicker;
use Filament\Forms\Components\Section;
use Filament\Forms\Components\Select;
use Filament\Forms\Components\TextInput;
use Filament\Tables\Actions\ExportAction;
use Filament\Tables\Filters\Filter;

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';

    protected static ?int $navigationSort = 2;

    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()
                            ->options(function (callable $get) {
                                $userHas = Filament::auth()->user()->plant_id;
                                return ($userHas && strlen($userHas) > 0) ? Plant::where('id', $userHas)->pluck('name', 'id')->toArray() : Plant::pluck('name', 'id')->toArray();
                            })
                            ->default(function () {
                                return optional(ProductionLineStop::latest()->first())->plant_id;
                            })
                            ->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'))
                               return Block::where('plant_id', $get('plant_id'))
                                    ->pluck('name', 'id')
                                    ->toArray();
                            })
                            ->reactive()
                            ->default(function () {
                                $latestShiftId = optional(ProductionLineStop::latest()->first())->shift_id;
                                return optional(Shift::where('id', $latestShiftId)->first())->block_id;
                            })
                            // ->afterStateUpdated(fn ($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();
                                    $getBlock = 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(function (callable $get) {
                                if (!$get('plant_id') || !$get('block_name')) {
                                    return [];
                                }

                               return Shift::where('plant_id', $get('plant_id'))
                               ->where('block_id', $get('block_name'))
                                    ->pluck('name', 'id')
                                    ->toArray();
                            })
                            ->reactive()
                            ->default(function () {
                                return optional(ProductionLineStop::latest()->first())->shift_id;
                            })
                            // ->afterStateUpdated(fn ($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(function (callable $get) {
                                if (!$get('plant_id') || !$get('block_name') || !$get('shift_id')) {
                                    return [];
                                }

                              //  return \App\Models\Line::where('plant_id', $get('plant_id'))
                              return Line::where('plant_id', $get('plant_id'))
                                    ->pluck('name', 'id')
                                    ->toArray();
                            })
                            ->reactive()
                            ->default(function () {
                                return optional(ProductionLineStop::latest()->first())->line_id;
                            })
                            ->afterStateUpdated(function ($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');
                                $set('linestop_id', null);
                                $set('lineStop_reason', null);

                                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', $get('linestop_id'))
                            //     ->pluck('code', 'id')
                            // )
                            ->placeholder('Scan the valid code')
                            ->autofocus(true)
                            ->options(fn () => LineStop::pluck('code', 'id'))
                            ->required()
                            // ->nullable()
                            // ->reactive()
                            ->optionsLimit(5)
                            ->searchable()
                            ->loadingMessage('Loading line stop codes...')
                            ->live(debounce: 500) // Enable live updates
                            ->afterStateUpdated(function ($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 = 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()
                            ->before('to_datetime')
                            ->reactive()
                            // ->closeOnDateSelection()
                            ->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, $set)  //self means it calling the function within the class
                            )
                            ->extraAttributes(fn ($get) => [
                                'class' => $get('plsToDateError') ? 'border-red-500' : '',
                            ])
                            ->hint(fn ($get) => $get('plsToDateError') ? $get('plsToDateError') : null)
                            ->hintColor('danger'),
                        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(),
                        Forms\Components\Hidden::make('operator_id')
                            ->default(Filament::auth()->user()->name),
                    ])
                    ->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);
                    $set('plsToDateError', 'Time difference must be atlease a minute.');
                }
                else
                {
                    $set('stop_hour', floor($diffInMinutes / 60));
                    $set('stop_min', $diffInMinutes % 60);
                    $set('plsToDateError', null);
                }
            } else {
                $set('stop_hour', null);
                $set('stop_min', null);
                $set('plsToDateError', 'To DateTime must be greater.');
            }
        }
    }

    public static function table(Table $table): Table
    {
        return $table
            ->query(ProductionLineStop::query())
            ->columns([
                // Tables\Columns\TextColumn::make('id')
                //     ->label('ID')
                //     ->numeric()
                //     ->sortable(),
                Tables\Columns\TextColumn::make('No.')
                    ->label('No.')
                    ->getStateUsing(function ($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('linestop.code')
                    ->label('Line Stop Code')
                    ->alignCenter()
                    ->sortable(),
                Tables\Columns\TextColumn::make('linestop.reason')
                    ->label('Line Stop Reason')
                    ->alignCenter()
                    ->sortable(),
                Tables\Columns\TextColumn::make('from_datetime')
                    ->label('From DateTime')
                    ->dateTime()
                    ->alignCenter(),
                Tables\Columns\TextColumn::make('to_datetime')
                    ->label('To DateTime')
                    ->dateTime()
                    ->alignCenter(),
                Tables\Columns\TextColumn::make('stop_hour')
                    ->label('Stop Hour')
                    ->alignCenter()
                    ->numeric(),
                Tables\Columns\TextColumn::make('stop_min')
                    ->label('Stop Minute')
                    ->alignCenter()
                    ->numeric(),
                Tables\Columns\TextColumn::make('line.name')
                    ->label('Line')
                    ->alignCenter()
                    ->sortable(),
                Tables\Columns\TextColumn::make('shift.block.name')
                    ->label('Block')
                    ->alignCenter()
                    ->sortable(),
                Tables\Columns\TextColumn::make('shift.name')
                    ->label('Shift')
                    ->alignCenter()
                    ->sortable(),
                Tables\Columns\TextColumn::make('plant.name')
                    ->label('Plant')
                    ->alignCenter()
                    ->sortable(),
                Tables\Columns\TextColumn::make('created_at')
                    ->label('Created At')
                    ->dateTime()
                    ->alignCenter()
                    ->sortable(),
                Tables\Columns\TextColumn::make('updated_at')
                    ->label('Updated At')
                    ->dateTime()
                    ->alignCenter()
                    ->sortable()
                    ->toggleable(isToggledHiddenByDefault: true),
                Tables\Columns\TextColumn::make('deleted_at')
                    ->label('Deleted At')
                    ->dateTime()
                    ->alignCenter()
                    ->sortable()
                    ->toggleable(isToggledHiddenByDefault: true),
                Tables\Columns\TextColumn::make('operator_id')
                    ->label('Operator ID')
                    ->alignCenter()
                    ->sortable(),
            ])

            ->filters([
                Tables\Filters\TrashedFilter::make(),
                Filter::make('advanced_filters')
                    ->label('Advanced Filters')
                    ->form([

                        //plant
                        Select::make('Plant')
                            ->label('Select Plant')
                            ->nullable()
                            // ->options(function () {
                            //     return Plant::pluck('name', 'id'); // Assuming 'name' is the column you want to display
                            // })
                            ->options(function (callable $get) {
                                $userHas = Filament::auth()->user()->plant_id;
                                return ($userHas && strlen($userHas) > 0) ? Plant::where('id', $userHas)->pluck('name', 'id')->toArray() : Plant::pluck('name', 'id')->toArray();
                            })
                            ->reactive()
                            ->afterStateUpdated(function ($state, callable $set, callable $get) {
                                $set('Line', null);
                                $set('Block', null);
                                $set('Shift', null);
                                $set('line_stop_id', null);
                            }),

                        //line
                        Select::make('Line')
                            ->label('Select line')
                            ->nullable()
                            ->options(function (callable $get) {
                                $plantId = $get('Plant');

                                if (!$plantId ) {
                                    return [];
                                }
                                return Line::where('plant_id', $plantId)
                                ->pluck('name', 'id');
                            })
                            ->reactive(),

                        //block
                        Select::make('Block')
                            ->label('Select Block')
                            ->nullable()
                            ->options(function (callable $get) {
                                $plantId = $get('Plant');

                                if (!$plantId ) {
                                    return [];
                                }
                                return Block::where('plant_id', $get('Plant'))->pluck('name', 'id');
                            })
                            ->reactive()
                            ->afterStateUpdated(function ($state, callable $set, callable $get) {
                                $set('Shift', null);
                            }),

                        //shift
                        Select::make('Shift')
                            ->label('Select Shift')
                            ->nullable()
                            ->options(function (callable $get) {
                                $plantId = $get('Plant');
                                $blockId = $get('Block');

                                if (!$plantId || !$blockId) {
                                    return []; // Return empty if plant or block is not selected
                                }

                                return Shift::where('plant_id', $plantId)
                                    ->where('block_id', $blockId)
                                    ->pluck('name', 'id');
                            })
                            ->reactive(),

                        Select::make('line_stop_id') //linestop_id
                            ->label('Search by Line Stop Code')
                            ->nullable()
                            // ->options(fn () => LineStop::orderBy('code')->whereHas('productionLineStops')->pluck('code', 'id'))
                            ->options(function (callable $get) {
                                $pId = $get('Plant');
                                return LineStop::orderBy('code')->whereHas('productionLineStops', function ($query) use ($pId) {
                                    if ($pId) {
                                        $query->where('plant_id', $pId);
                                    }
                                })->pluck('code', 'id');
                            })
                            ->searchable()
                            ->reactive(),

                        DateTimePicker::make(name: 'created_from')
                            ->label('Created From')
                            ->placeholder(placeholder: 'Select From DateTime')
                            ->reactive()
                            ->native(false),

                        DateTimePicker::make('created_to')
                            ->label('Created To')
                            ->placeholder(placeholder: 'Select To DateTime')
                            ->reactive()
                            ->native(false),
                    ])
                    ->query(function ($query, array $data) {
                        if (empty($data['Plant']) && empty($data['Shift']) && empty($data['Line']) && empty($data['created_from']) && empty($data['created_to']) && empty($data['line_stop_id'])) {
                            return $query->whereRaw('1 = 0');
                        }

                        if ($plant = $data['Plant'] ?? null) {
                            $query->where('plant_id', $plant);
                        }

                        if ($shift = $data['Shift'] ?? null) {
                            $query->where('shift_id', $shift);
                        }

                        if ($line = $data['Line'] ?? null) {
                            $query->where('line_id', $line);
                        }

                        if ($code = $data['line_stop_id'] ?? null) {
                            // Find the linestop_id by code entered
                            // $lineStop = \App\Models\LineStop::where('code', 'like', "%{$code}%")->first();

                            // // If we find a matching LineStop, use its id to filter production_line_stops
                            // if ($lineStop) {
                            //     $query->where('linestop_id', $lineStop->id);
                            // } else {
                            //     // If no match found, you can either handle it as an error or return no results
                            //     $query->where('linestop_id', null);  // This will return no results if no match
                            // }
                            $query->where('linestop_id', $code);
                        }

                        if ($from = $data['created_from'] ?? null) {
                            $query->where('created_at', '>=', $from);
                        }

                        if ($to = $data['created_to'] ?? null) {
                            $query->where('created_at', '<=', $to);
                        }
                        // return $query;
                    })
                    ->indicateUsing(function (array $data) {
                        $indicators = [];

                        if (!empty($data['Plant'])) {
                            $indicators[] = 'Plant: ' . Plant::where('id', $data['Plant'])->value('name');
                        }

                        if (!empty($data['Shift'])) {
                            $indicators[] = 'Shift: ' . Shift::where('id', $data['Shift'])->value('name');
                        }

                        if (!empty($data['Line'])) {
                            $indicators[] = 'Line: ' . Line::where('id', $data['Line'])->value('name');
                        }

                        if (!empty($data['created_from'])) {
                            $indicators[] = 'From: ' . $data['created_from'];
                        }

                        if (!empty($data['created_to'])) {
                            $indicators[] = 'To: ' . $data['created_to'];
                        }

                        if (!empty($data['line_stop_id'])) {
                            $lineStopCod = LineStop::find($data['line_stop_id'])->code ?? 'Unknown';
                            $indicators[] = 'Line Stop Code: ' . $lineStopCod;
                        }

                        return $indicators;
                    })
            ])
            ->filtersFormMaxHeight('280px')
            ->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(),
                    FilamentExportBulkAction::make('export')
                ]),
            ])
            ->headerActions([
                ImportAction::make()
                    ->importer(ProductionLineStopImporter::class)
                    ->visible(function() {
                        return Filament::auth()->user()->can('view import production line stop');
                    }),
                ExportAction::make()
                    ->exporter(ProductionLineStopExporter::class)
                    ->visible(function() {
                        return Filament::auth()->user()->can('view export production line stop');
                    }),
            ]);
    }

    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,
            ]);
    }
}