<?php

namespace App\Filament\Resources;

use App\Filament\Imports\ShiftImporter;
use App\Filament\Resources\ShiftResource\Pages;
use App\Models\Shift;
use Carbon\Carbon;
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;

class ShiftResource extends Resource
{
    protected static ?string $model = Shift::class;

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

    protected static ?string $navigationGroup = 'Master Entries';

    public static function form(Form $form): Form
    {
        return $form
            ->schema([
                Forms\Components\Select::make('plant_id')
                    ->relationship('plant', 'name')
                    ->required()
                    ->nullable()
                    ->reactive()
                    ->afterStateUpdated(fn ($set) => $set('block_id', null)), // Reset block_id when plant changes
                Forms\Components\Select::make('block_id')
                    ->relationship('block', 'name')
                    ->required()
                    ->nullable()
                    // ->options(fn (callable $get) =>
                    // \App\Models\Block::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\Block::where('plant_id', $get('plant_id'))
                            ->pluck('name', 'id')
                            ->toArray();
                    })
                    ->reactive(),
                Forms\Components\TextInput::make('name')
                    ->required(),
                Forms\Components\TimePicker::make('start_time')
                    ->required()
                    ->live()
                    ->afterStateUpdated(fn (callable $set, callable $get, $state) =>
                    $set('end_time', self::calculateEndTime($state, $get('duration')))
                ),

                Forms\Components\TextInput::make('duration')
                    ->required()
                    ->inputMode('decimal')
                    ->minValue(0.01) // Minimum valid duration
                    ->lazy()
                    ->afterStateUpdated(fn (callable $set, callable $get, $state) =>
                    $set('end_time', self::calculateEndTime($get('start_time'), $state))
                ),

                Forms\Components\TimePicker::make('end_time')
                    ->required(),
                    // ->native(false),
            ]);


    }

    public static function table(Table $table): Table
    {
        return $table
            ->columns([
                Tables\Columns\TextColumn::make('id')
                    ->label('ID')
                    ->numeric()
                    ->sortable(),
                Tables\Columns\TextColumn::make('name')
                    ->sortable(),
                Tables\Columns\TextColumn::make('start_time')
                    ->sortable(),
                Tables\Columns\TextColumn::make('duration')
                    ->sortable(),
                Tables\Columns\TextColumn::make('end_time'),
                Tables\Columns\TextColumn::make('block.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(ShiftImporter::class),
            ]);
    }

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

    public static function getPages(): array
    {
        return [
            'index' => Pages\ListShifts::route('/'),
            'create' => Pages\CreateShift::route('/create'),
            'view' => Pages\ViewShift::route('/{record}'),
            'edit' => Pages\EditShift::route('/{record}/edit'),
        ];
    }

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

    protected static function calculateEndTime(?string $startTime, ?string $duration): ?string
{
    if (!$startTime || !$duration) {
        return null;
    }

    try {
        // Convert start_time to Carbon instance
        $startTimeCarbon = Carbon::createFromFormat('H:i:s', $startTime);

        // Ensure duration is in a valid numeric format
        $duration = str_replace(',', '.', $duration); // Handle decimal formats
        if (!is_numeric($duration)) {
            return null; // Invalid duration format
        }

        // Extract hours and minutes correctly
        [$hours, $decimalMinutes] = explode('.', $duration) + [0, 0]; // Ensure two parts
        $hours = (int) $hours; // Convert to integer hours
        $minutes = (int) $decimalMinutes; // Directly use decimal part as minutes

        // Calculate end time
        $endTimeCarbon = $startTimeCarbon->addHours($hours)->addMinutes($minutes);

        return $endTimeCarbon->format('H:i:s'); // Return formatted end time
    } catch (\Exception $e) {
        return null;
    }
}


}