<?php

namespace App\Filament\Resources\Extracts;

use App\Filament\Resources\Extracts\Pages\CreateExtract;
use App\Filament\Resources\Extracts\Pages\EditExtract;
use App\Filament\Resources\Extracts\Pages\ListExtracts;
use App\Models\DeductionType;
use App\Models\Extract;
use App\Models\Service;
use BackedEnum;
use Filament\Resources\Resource;
use Filament\Schemas\Schema;
use Filament\Support\Icons\Heroicon;
use Filament\Tables\Table;
use Filament\Forms\Components\Repeater;
use Filament\Forms\Components\TextInput;
use Filament\Forms\Components\Select;
use Filament\Forms\Components\DatePicker;
use Filament\Forms\Components\Textarea;
use Filament\Schemas\Components\Section;
use Filament\Tables\Columns\TextColumn;
use Filament\Actions\EditAction;
use Filament\Actions\DeleteAction;
use Filament\Actions\BulkActionGroup;
use Filament\Actions\DeleteBulkAction;
use Filament\Actions\Action;

class ExtractResource extends Resource
{
    protected static ?string $model = Extract::class;

    protected static string|BackedEnum|null $navigationIcon = Heroicon::OutlinedCurrencyDollar;
    protected static ?int $navigationSort = 3;
    protected static ?string $navigationLabel = 'المستخلصات';

    public static function getNavigationGroup(): string|null
    {
        return 'التشغيل والصيانة';
    }

    public static function getNavigationBadge(): ?string
    {
        return static::getModel()::count();
    }

    public static function form(Schema $schema): Schema
    {
        return $schema
            ->components([
                Section::make('بيانات المستخلص')
                    ->schema([
                        TextInput::make('extract_no')
                            ->label('رقم المستخلص')
                            ->disabled()
                            ->dehydrated(false)
                            ->placeholder('سيتم إنشاؤه تلقائياً'),

                        TextInput::make('revision_no')
                            ->label('رقم المراجعة')
                            ->disabled()
                            ->dehydrated(false)
                            ->default(1),

                        Select::make('company_id')
                            ->label('الشركة')
                            ->relationship('company', 'name')
                            ->searchable()
                            ->required()
                            ->preload()
                            ->createOptionForm([
                                TextInput::make('name')
                                    ->label('الاسم')
                                    ->required()
                                    ->maxLength(255),
                                TextInput::make('contact_person')
                                    ->label('الشخص المسؤول')
                                    ->maxLength(255),
                                TextInput::make('phone')
                                    ->label('الهاتف')
                                    ->tel()
                                    ->maxLength(20),
                            ])
                            ->createOptionUsing(function ($data) {
                                return \App\Models\Company::create($data)->id;
                            }),

                        Select::make('contract_id')
                            ->label('العقد')
                            ->relationship('contract', 'contract_no')
                            ->searchable()
                            ->preload()
                            ->createOptionForm([
                                Select::make('company_id')
                                    ->label('الشركة')
                                    ->relationship('company', 'name')
                                    ->required()
                                    ->searchable()
                                    ->preload(),
                                TextInput::make('contract_no')
                                    ->label('رقم العقد')
                                    ->required()
                                    ->maxLength(100),
                                DatePicker::make('start_date')
                                    ->label('تاريخ البداية')
                                    ->required(),
                                DatePicker::make('end_date')
                                    ->label('تاريخ النهاية')
                                    ->required(),
                            ])
                            ->createOptionUsing(function ($data) {
                                return \App\Models\Contract::create($data)->id;
                            }),

                        Select::make('status')
                            ->label('الحالة')
                            ->options([
                                'draft' => 'مسودة',
                                'submitted' => 'مقدم',
                                'approved' => 'معتمد',
                                'rejected' => 'مرفوض',
                                'invoiced' => 'تم الفواتير',
                            ])
                            ->default('draft')
                            ->required()
                            ->preload(),

                        DatePicker::make('period_from')
                            ->label('من تاريخ')
                            ->required(),

                        DatePicker::make('period_to')
                            ->label('إلى تاريخ')
                            ->required(),

                        TextInput::make('gross_amount')
                            ->label('المبلغ الإجمالي')
                            ->numeric()
                            ->disabled()
                            ->dehydrated(false)
                            ->prefix('جنيه'),

                        TextInput::make('deductions_amount')
                            ->label('جملة الخصومات')
                            ->numeric()
                            ->disabled()
                            ->dehydrated(false)
                            ->prefix('جنيه'),

                        TextInput::make('net_amount')
                            ->label('الصافي')
                            ->numeric()
                            ->disabled()
                            ->dehydrated(false)
                            ->prefix('جنيه'),

                        Textarea::make('notes')
                            ->label('ملاحظات')
                            ->rows(3)
                            ->columnSpanFull(),
                    ])->columns(2),

                Section::make('سطور المستخلص')
                    ->schema([
                        Repeater::make('lines')
                            ->relationship('lines')
                            ->schema([
                                Select::make('service_id')
                                    ->label('الخدمة')
                                    ->options(Service::query()->where('is_active', true)->pluck('name', 'id')->toArray())
                                    ->searchable()
                                    ->required(),

                                TextInput::make('description')
                                    ->label('الوصف')
                                    ->maxLength(255),

                                TextInput::make('quantity')
                                    ->label('الكمية')
                                    ->numeric()
                                    ->required()
                                    ->default(0),

                                TextInput::make('unit_price')
                                    ->label('سعر الوحدة')
                                    ->numeric()
                                    ->required()
                                    ->default(0),

                                TextInput::make('amount')
                                    ->label('القيمة')
                                    ->disabled()
                                    ->dehydrated(false),
                            ])
                            ->columns(3)
                            ->collapsible()
                            ->columnSpanFull(),
                    ]),

                Section::make('خصومات المستخلص')
                    ->schema([
                        Repeater::make('deductions')
                            ->relationship('deductions')
                            ->schema([
                                Select::make('deduction_type_id')
                                    ->label('نوع الخصم')
                                    ->options(DeductionType::active()->pluck('name', 'id')->toArray())
                                    ->searchable()
                                    ->required(),

                                TextInput::make('description')
                                    ->label('الوصف')
                                    ->maxLength(255),

                                TextInput::make('base_amount')
                                    ->label('المبلغ الأساسي')
                                    ->numeric()
                                    ->default(0),

                                TextInput::make('deduction_amount')
                                    ->label('مبلغ الخصم')
                                    ->disabled()
                                    ->dehydrated(false),
                            ])
                            ->columns(2)
                            ->collapsible()
                            ->columnSpanFull(),
                    ])->columns(2),
            ]);
    }

    public static function table(Table $table): Table
    {
        return $table
            ->columns([
                TextColumn::make('extract_no')
                    ->label('رقم المستخلص')
                    ->searchable()
                    ->sortable(),

                TextColumn::make('revision_no')
                    ->label('المراجعة')
                    ->badge(),

                TextColumn::make('company.name')
                    ->label('الشركة')
                    ->searchable()
                    ->sortable(),

                TextColumn::make('period_from')
                    ->label('من')
                    ->date('d/m/Y')
                    ->sortable(),

                TextColumn::make('period_to')
                    ->label('إلى')
                    ->date('d/m/Y')
                    ->sortable(),

                TextColumn::make('gross_amount')
                    ->label('الإجمالي')
                    ->money('EGP')
                    ->sortable(),

                TextColumn::make('deductions_amount')
                    ->label('الخصومات')
                    ->money('EGP')
                    ->sortable(),

                TextColumn::make('net_amount')
                    ->label('الصافي')
                    ->money('EGP')
                    ->sortable(),

                TextColumn::make('status')
                    ->label('الحالة')
                    ->badge()
                    ->formatStateUsing(fn (string $state): string => match ($state) {
                        'draft' => 'مسودة',
                        'submitted' => 'مقدم',
                        'approved' => 'معتمد',
                        'rejected' => 'مرفوض',
                        'invoiced' => 'تم الفواتير',
                        default => $state
                    }),

                TextColumn::make('created_at')
                    ->label('تاريخ الإنشاء')
                    ->dateTime('d/m/Y')
                    ->sortable()
                    ->toggleable(isToggledHiddenByDefault: true),
            ])
            ->defaultSort('created_at', 'desc')
            ->actions([
                Action::make('submit')
                    ->label('إرسال للاعتماد')
                    ->icon('heroicon-o-paper-airplane')
                    ->requiresConfirmation()
                    ->action(fn(Extract $record) => $record->update(['status' => 'submitted']))
                    ->visible(fn(Extract $record) => $record->status === 'draft' && $record->lines()->exists()),

                Action::make('approve')
                    ->label('اعتماد')
                    ->icon('heroicon-o-check-circle')
                    ->requiresConfirmation()
                    ->action(fn (Extract $record) => $record->approve(auth()->id()))
                    ->visible(fn (Extract $record) => $record->status === 'submitted'),

                Action::make('reject')
                    ->label('رفض')
                    ->icon('heroicon-o-x-circle')
                    ->requiresConfirmation()
                    ->action(fn (Extract $record) => $record->reject())
                    ->visible(fn (Extract $record) => $record->status === 'submitted'),

                EditAction::make()
                    ->visible(fn (Extract $record) => $record->status === 'draft'),

                DeleteAction::make()
                    ->visible(fn (Extract $record) => $record->status === 'draft'),
            ])
            ->bulkActions([
                BulkActionGroup::make([
                    DeleteBulkAction::make(),
                ]),
            ]);
    }

    public static function getPages(): array
    {
        return [
            'index' => ListExtracts::route('/'),
            'create' => CreateExtract::route('/create'),
            'edit' => EditExtract::route('/{record}/edit'),
        ];
    }
}