<?php

namespace App\Filament\Resources\ExecutionSummaries;

use App\Filament\Resources\ExecutionSummaries\Pages\CreateExecutionSummary;
use App\Filament\Resources\ExecutionSummaries\Pages\EditExecutionSummary;
use App\Filament\Resources\ExecutionSummaries\Pages\ListExecutionSummaries;
use App\Models\ContractItem;
use App\Models\ExecutionSummary;
use App\Models\Service;
use BackedEnum;
use Filament\Actions\Action;
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;

class ExecutionSummaryResource extends Resource
{
    protected static ?string $model = ExecutionSummary::class;

    protected static string|BackedEnum|null $navigationIcon = Heroicon::OutlinedDocumentText;
    protected static ?int $navigationSort = 2;
    protected static ?string $navigationLabel = 'بيانات التنفيذ';

    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 البيان')
                    ->schema([
                        TextInput::make('summary_no')
                            ->label('رقم البيان')
                            ->disabled()
                            ->dehydrated(false)
                            ->placeholder('سيتم إنشاؤه تلقائياً'),

                        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',
                                'confirmed' => 'معتمد',
                            ])
                            ->default('draft')
                            ->required()
                            ->preload(),

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

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

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

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

                Section::make('سطور بيان التنفيذ')
                    ->schema([
                        Repeater::make('lines')
                            ->relationship('lines')
                            ->schema([
                                Select::make('contract_item_id')
                                    ->label('بند العقد')
                                    ->options(function (callable $get) {
                                        $contractId = $get('../../contract_id');

                                        if (!$contractId) {
                                            return [];
                                        }

                                        return ContractItem::query()
                                            ->where('contract_id', $contractId)
                                            ->with('service')
                                            ->get()
                                            ->mapWithKeys(fn(ContractItem $item) => [
                                                $item->id => ($item->service?->name ?? 'خدمة') . ' | ' . number_format((float) $item->agreed_qty, 2),
                                            ])
                                            ->toArray();
                                    })
                                    ->searchable()
                                    ->reactive()
                                    ->afterStateUpdated(function ($state, callable $set) {
                                        if (!$state) {
                                            return;
                                        }

                                        $contractItem = ContractItem::query()->with('service')->find($state);
                                        if (!$contractItem) {
                                            return;
                                        }

                                        $set('service_id', $contractItem->service_id);
                                        $set('agreed_qty', $contractItem->agreed_qty);
                                        $set('unit_price', $contractItem->unit_price);
                                    }),

                                Select::make('service_id')
                                    ->label('الخدمة')
                                    ->options(Service::query()->where('is_active', true)->pluck('name', 'id')->toArray())
                                    ->searchable()
                                    ->required(),

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

                                TextInput::make('agreed_qty')
                                    ->label('الكمية المتفق عليها')
                                    ->numeric()
                                    ->default(0),

                                TextInput::make('progress_pct')
                                    ->label('نسبة الإنجاز %')
                                    ->disabled()
                                    ->dehydrated(false),

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

                                TextInput::make('amount')
                                    ->label('القيمة')
                                    ->disabled()
                                    ->dehydrated(false),
                            ])
                            ->columns(3)
                            ->collapsible()
                            ->columnSpanFull(),
                    ])->columns(2),
            ]);
    }

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

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

                TextColumn::make('contract.contract_no')
                    ->label('العقد')
                    ->searchable()
                    ->toggleable(),

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

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

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

                TextColumn::make('status')
                    ->label('الحالة')
                    ->badge()
                    ->formatStateUsing(fn (string $state): string => match ($state) {
                        'draft' => 'مسودة',
                        'confirmed' => 'معتمد',
                        default => $state
                    }),

                TextColumn::make('created_at')
                    ->label('تاريخ الإنشاء')
                    ->dateTime('d/m/Y')
                    ->sortable()
                    ->toggleable(isToggledHiddenByDefault: true),
            ])
            ->defaultSort('created_at', 'desc')
            ->actions([
                Action::make('generate_lines')
                    ->label('تجميع أوامر التشغيل')
                    ->icon('heroicon-o-arrow-path')
                    ->requiresConfirmation()
                    ->action(function (ExecutionSummary $record): void {
                        $record->generateLinesFromApprovedWorkOrders();
                    })
                    ->visible(fn(ExecutionSummary $record) => $record->status === 'draft'),

                Action::make('confirm')
                    ->label('اعتماد')
                    ->icon('heroicon-o-check-circle')
                    ->requiresConfirmation()
                    ->action(function (ExecutionSummary $record): void {
                        $record->update(['status' => 'confirmed']);
                    })
                    ->visible(fn(ExecutionSummary $record) => $record->status === 'draft' && $record->lines()->exists()),

                EditAction::make(),
                DeleteAction::make(),
            ])
            ->bulkActions([
                BulkActionGroup::make([
                    DeleteBulkAction::make(),
                ]),
            ]);
    }

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