<?php

namespace App\Filament\Central\Resources;

use App\Filament\Central\Resources\SubscriptionResource\Pages;
use App\Models\Central\Company;
use App\Models\Central\Plan;
use App\Models\Central\Subscription;
use Filament\Actions;
use Filament\Forms;
use Filament\Notifications\Notification;
use Filament\Resources\Resource;
use Filament\Schemas;
use Filament\Schemas\Components\Utilities\Get;
use Filament\Schemas\Components\Utilities\Set;
use Filament\Schemas\Schema;
use Filament\Tables;
use Filament\Tables\Table;

class SubscriptionResource extends Resource
{
    protected static ?string $model = Subscription::class;

    protected static string|\BackedEnum|null $navigationIcon = 'heroicon-o-credit-card';

    protected static ?string $navigationLabel = 'Facturi & abonamente';

    protected static ?string $modelLabel = 'factură';

    protected static ?string $pluralModelLabel = 'facturi';

    protected static ?int $navigationSort = 30;

    public static function getNavigationBadge(): ?string
    {
        $overdue = static::$model::where('status', 'overdue')->count();
        return $overdue > 0 ? (string) $overdue : null;
    }

    public static function getNavigationBadgeColor(): ?string { return 'danger'; }

    public static function form(Schema $schema): Schema
    {
        return $schema->components([
            Schemas\Components\Section::make('Companie & plan')
                ->columns(2)
                ->schema([
                    Forms\Components\Select::make('company_id')
                        ->label('Companie')
                        ->options(fn () => Company::orderBy('name')->pluck('name', 'id'))
                        ->required()->searchable()->live(),
                    Forms\Components\Select::make('plan_id')
                        ->label('Plan')
                        ->options(fn () => Plan::pluck('name', 'id'))
                        ->required()->searchable()->live()
                        ->afterStateUpdated(function ($state, Set $set, Get $get) {
                            if (! $state) return;
                            $plan = Plan::find($state);
                            if (! $plan) return;
                            $period = $get('period') ?? 'monthly';
                            $set('amount', $period === 'yearly' ? $plan->price_yearly : $plan->price_monthly);
                            $set('currency', $plan->currency);
                        }),
                    Forms\Components\Select::make('period')
                        ->options(Subscription::PERIODS)->default('monthly')->required()->live()
                        ->afterStateUpdated(function ($state, Set $set, Get $get) {
                            $plan = Plan::find($get('plan_id'));
                            if (! $plan) return;
                            $set('amount', $state === 'yearly' ? $plan->price_yearly : $plan->price_monthly);
                            // Auto-fill period_end based on period
                            $start = $get('period_start') ?? now()->toDateString();
                            $end = $state === 'yearly'
                                ? \Carbon\Carbon::parse($start)->addYear()->toDateString()
                                : \Carbon\Carbon::parse($start)->addMonth()->toDateString();
                            $set('period_end', $end);
                        }),
                    Forms\Components\Select::make('status')
                        ->options(Subscription::STATUSES)->default('pending')->required(),
                ]),
            Schemas\Components\Section::make('Sumă')
                ->columns(3)
                ->schema([
                    Forms\Components\TextInput::make('amount')->numeric()->required()->suffix(fn (Get $get) => $get('currency') ?? 'MDL'),
                    Forms\Components\Select::make('currency')->options(['MDL' => 'MDL', 'EUR' => 'EUR', 'USD' => 'USD'])->default('MDL'),
                    Forms\Components\Select::make('payment_method')
                        ->options(Subscription::PAYMENT_METHODS),
                ]),
            Schemas\Components\Section::make('Perioadă')
                ->columns(3)
                ->schema([
                    Forms\Components\DatePicker::make('period_start')->required()->default(today()),
                    Forms\Components\DatePicker::make('period_end')->required(),
                    Forms\Components\DateTimePicker::make('due_at')->label('Scadent la'),
                    Forms\Components\DateTimePicker::make('paid_at')->label('Plătit la'),
                ]),
            Schemas\Components\Section::make('Detalii')
                ->columns(2)
                ->schema([
                    Forms\Components\TextInput::make('invoice_number')->label('Nr. factură')->placeholder('auto-generat')->maxLength(30),
                    Forms\Components\TextInput::make('reference')->label('Referință (Stripe id, transfer)')->maxLength(100),
                    Forms\Components\Textarea::make('notes')->columnSpanFull()->rows(2),
                ]),
        ]);
    }

    public static function table(Table $table): Table
    {
        return $table
            ->columns([
                Tables\Columns\TextColumn::make('invoice_number')
                    ->label('Factură')
                    ->placeholder(fn ($r) => '—')
                    ->copyable()
                    ->searchable(),
                Tables\Columns\TextColumn::make('company.name')
                    ->label('Companie')
                    ->searchable()
                    ->url(fn ($r) => \App\Filament\Central\Resources\CompanyResource::getUrl('view', ['record' => $r->company_id])),
                Tables\Columns\TextColumn::make('plan.name')->label('Plan')->placeholder('—'),
                Tables\Columns\TextColumn::make('period')
                    ->formatStateUsing(fn ($s) => Subscription::PERIODS[$s] ?? $s)
                    ->badge(),
                Tables\Columns\TextColumn::make('amount')
                    ->money(fn ($r) => $r->currency)
                    ->sortable()
                    ->weight('bold'),
                Tables\Columns\TextColumn::make('status')
                    ->badge()
                    ->formatStateUsing(fn ($s) => Subscription::STATUSES[$s] ?? $s)
                    ->color(fn ($s) => match ($s) {
                        'paid' => 'success',
                        'overdue' => 'danger',
                        'pending' => 'warning',
                        'cancelled', 'refunded' => 'gray',
                        default => 'primary',
                    }),
                Tables\Columns\TextColumn::make('period_end')->label('Până la')->date(),
                Tables\Columns\TextColumn::make('paid_at')->label('Plătit')->date()->placeholder('—'),
            ])
            ->filters([
                Tables\Filters\SelectFilter::make('status')->options(Subscription::STATUSES),
                Tables\Filters\SelectFilter::make('period')->options(Subscription::PERIODS),
            ])
            ->actions([
                Actions\Action::make('mark_paid')
                    ->label('Marchează plătit')
                    ->icon('heroicon-m-check-circle')
                    ->color('success')
                    ->visible(fn ($r) => $r->status !== 'paid')
                    ->requiresConfirmation()
                    ->action(function (Subscription $r) {
                        $r->update(['status' => 'paid', 'paid_at' => now()]);
                        // Auto-extend company subscription
                        $r->company->update([
                            'status' => 'active',
                            'active_until' => $r->period_end,
                        ]);
                        Notification::make()->title('Plată confirmată. Abonament extins până la ' . $r->period_end->format('d.m.Y'))->success()->send();
                    }),
                Actions\EditAction::make(),
                Actions\DeleteAction::make(),
            ])
            ->emptyStateHeading('Nicio factură generată')
            ->emptyStateDescription('Crează manual prima factură sau folosește butonul „Generează factură" din pagina Companiei.')
            ->defaultSort('created_at', 'desc');
    }

    public static function getPages(): array
    {
        return [
            'index' => Pages\ListSubscriptions::route('/'),
            'create' => Pages\CreateSubscription::route('/create'),
            'edit' => Pages\EditSubscription::route('/{record}/edit'),
        ];
    }
}