<?php

namespace App\Filament\Admin\Resources\CareerApplications\Schemas;

use Filament\Forms\Components\FileUpload;
use Filament\Forms\Components\Select;
use Filament\Forms\Components\Textarea;
use Filament\Forms\Components\TextInput;
use Filament\Forms\Components\DatePicker;
use Filament\Schemas\Components\Section;
use Filament\Schemas\Schema;
use Illuminate\Support\Facades\Hash;
use Filament\Actions\Action;
use Filament\Schemas\Components\Utilities\Set;
use Illuminate\Support\Str;

class CareerApplicationForm
{
    public static function configure(Schema $schema): Schema
    {
        return $schema
            ->components([
                TextInput::make('name')
                    ->label(__('career.name'))
                    ->required()
                    ->disabled(),
                
                TextInput::make('email')
                    ->label(__('career.email'))
                    ->email()
                    ->required()
                    ->disabled(),
                
                TextInput::make('phone')
                    ->label(__('career.phone'))
                    ->disabled(),
                
                FileUpload::make('cv_path')
                    ->label(__('career.cv'))
                    ->disk('public')
                    ->directory('cvs')
                    ->required()
                    ->disabled()
                    ->downloadable(),
                
                Textarea::make('message')
                    ->label(__('career.message'))
                    ->disabled()
                    ->columnSpanFull(),
                
                Select::make('status')
                    ->label(__('career.status'))
                    ->options([
                        'pending' => __('career.pending'),
                        'reviewed' => __('career.reviewed'),
                        'rejected' => __('career.rejected'),
                        'accepted' => __('career.accepted'),
                        'waiting_document' => __('career.waiting_document'),
                    ])
                    ->required(),

                Section::make('Stajyer Giriş Bilgileri & Belgeleri')
                    ->description('Stajyerin sisteme giriş yapabilmesi için kullanıcı adı, şifre belirleyin ve imzalı staj formunu yükleyin.')
                    ->collapsible()
                    ->schema([
                        TextInput::make('username')
                            ->label('Kullanıcı Adı')
                            ->unique(ignoreRecord: true)
                            ->nullable(),
                        
                        TextInput::make('password')
                            ->label('Şifre')
                            ->password()
                            ->revealable()
                            ->dehydrateStateUsing(fn ($state) => filled($state) ? Hash::make($state) : null)
                            ->dehydrated(fn ($state) => filled($state))
                            ->placeholder('Şifreyi değiştirmek istemiyorsanız boş bırakın')
                            ->nullable()
                            ->suffixAction(
                                Action::make('generatePassword')
                                    ->icon('heroicon-m-arrow-path')
                                    ->action(fn (Set $set) => $set('password', Str::random(12)))
                            ),
                        
                        FileUpload::make('to_be_signed_internship_form_path')
                            ->label('İmzalanacak Staj Formu (Stajyerden)')
                            ->disk('public')
                            ->directory('to_be_signed_interns')
                            ->downloadable()
                            ->nullable(),

                        FileUpload::make('signed_internship_form_path')
                            ->label('İmzalı Staj Formu')
                            ->disk('public')
                            ->directory('signed_interns')
                            ->downloadable()
                            ->nullable(),

                        DatePicker::make('internship_start_date')
                            ->label('Staj Başlangıç Tarihi')
                            ->live()
                            ->afterStateUpdated(fn ($state, $get, Set $set) => self::calculateTotalDays($state, $get('internship_end_date'), $set))
                            ->nullable(),
                        
                        DatePicker::make('internship_end_date')
                            ->label('Staj Bitiş Tarihi')
                            ->live()
                            ->afterStateUpdated(fn ($state, $get, Set $set) => self::calculateTotalDays($get('internship_start_date'), $state, $set))
                            ->nullable(),

                        TextInput::make('internship_total_days')
                            ->label('Toplam Staj Süresi (İş Günü)')
                            ->numeric()
                            ->disabled()
                            ->dehydrated()
                            ->nullable(),
                    ])
                    ->columnSpanFull(),
            ]);
    }

    public static function calculateTotalDays($start, $end, Set $set): void
    {
        if (!$start || !$end) {
            $set('internship_total_days', null);
            return;
        }

        $startDate = \Carbon\Carbon::parse($start);
        $endDate = \Carbon\Carbon::parse($end);

        if ($startDate->gt($endDate)) {
            $set('internship_total_days', 0);
            return;
        }

        $days = 0;
        while ($startDate->lte($endDate)) {
            if (!$startDate->isWeekend()) {
                $days++;
            }
            $startDate->addDay();
        }

        $set('internship_total_days', $days);
    }
}