<?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\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;


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 $form
            ->schema([
                Forms\Components\Select::make('plant_id')
                    ->relationship('plant', 'name')
                    ->required()
                    ->nullable()
                    ->reactive(),
                Forms\Components\Select::make('block_name')
                    ->required()
                    ->nullable()
                    ->reactive()
                    ->afterStateUpdated(fn ($set) => $set('shift_id', null)),
                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')) {
                            return [];
                        }

                        return \App\Models\Shift::where('plant_id', $get('plant_id'))
                            ->pluck('name', 'id')
                            ->toArray();
                    })
                    ->reactive()
                    ->afterStateUpdated(fn ($set) => $set('line_id', null)),
                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')) {
                            return [];
                        }

                        return \App\Models\Line::where('plant_id', $get('plant_id'))
                            ->pluck('name', 'id')
                            ->toArray();
                    })
                    ->reactive(),
                // 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', $get('linestop_id'))
                    //     ->pluck('code', 'id')
                    // )
                    ->options(fn () => \App\Models\LineStop::pluck('code', 'id'))
                    ->required()
                    ->nullable()
                    // ->reactive()
                    ->searchable()
                    ->live(debounce: 500) // Enable live updates
                    ->afterStateUpdated(function ($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, $set)
                        ),
                Forms\Components\DateTimePicker::make('to_datetime')
                    ->label('To DateTime')
                    ->required()
                    ->reactive()
                    ->afterStateUpdated(fn ($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()
                    // ->dehydrated(false) // Don't send to backend
                    ->readOnly(true)
                    ->numeric(),
                Forms\Components\TextInput::make('stop_min')
                    ->required()
                    // ->dehydrated(false)
                    ->readOnly(true)
                    ->numeric(),
            ]);
    }

    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);
            } else {
                $set('stop_hour', 0);
                $set('stop_min', 0);
            }
        }
    }

    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,
            ]);
    }
}