<?php

namespace App\Filament\Resources;

use App\Filament\Resources\ClienteResource\Pages;
use App\Models\Cliente;
use App\Models\Impostazione;
use App\Support\ClienteCredenziali;
use Filament\Forms;
use Filament\Forms\Form;
use Filament\Infolists;
use Filament\Infolists\Infolist;
use Filament\Resources\Resource;
use Filament\Tables;
use Filament\Tables\Table;

class ClienteResource extends Resource
{
    protected static ?string $model = Cliente::class;

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

    protected static ?string $navigationLabel = 'Clienti';

    protected static ?string $modelLabel = 'cliente';

    protected static ?string $pluralModelLabel = 'clienti';

    protected static ?int $navigationSort = 2;

    public static function form(Form $form): Form
    {
        return $form->schema([
            Forms\Components\Section::make('Accesso')
                ->description('Credenziali per l\'accesso del cliente. Generate automaticamente, ma modificabili.')
                ->columns(2)
                ->schema([
                    Forms\Components\TextInput::make('username')
                        ->label('Nome utente')
                        ->required()
                        ->maxLength(50)
                        ->unique(ignoreRecord: true)
                        ->default(fn (string $operation) => $operation === 'create' ? ClienteCredenziali::generaUsername() : null)
                        ->suffixAction(
                            Forms\Components\Actions\Action::make('rigeneraUsername')
                                ->icon('heroicon-m-arrow-path')
                                ->tooltip('Genera un nuovo nome utente')
                                ->action(fn (Forms\Set $set) => $set('username', ClienteCredenziali::generaUsername()))
                        ),
                    Forms\Components\TextInput::make('password')
                        ->label('Password')
                        ->password()
                        ->revealable()
                        ->required(fn (string $operation) => $operation === 'create')
                        ->dehydrated(fn (?string $state) => filled($state))
                        ->default(fn (string $operation) => $operation === 'create' ? ClienteCredenziali::generaPassword() : null)
                        ->suffixAction(
                            Forms\Components\Actions\Action::make('rigeneraPassword')
                                ->icon('heroicon-m-arrow-path')
                                ->tooltip('Genera una nuova password')
                                ->action(fn (Forms\Set $set) => $set('password', ClienteCredenziali::generaPassword()))
                        )
                        ->helperText(fn (string $operation) => $operation === 'create'
                            ? 'Generata automaticamente. Ricordati di copiarla dopo il salvataggio: non sarà più leggibile.'
                            : 'Lascia vuoto per mantenere la password attuale, oppure genera/inserisci una nuova password.'),
                ]),
            Forms\Components\Section::make('Scontistica')
                ->description(fn () => sprintf(
                    'Sconti che il cliente può applicare al preventivo prima dell\'invio. Lascia vuoto per la regola base (1° sconto fino al %s%%, sconto extra fino al %s%% sul totale già scontato).',
                    static::percentuale(Impostazione::scontiBase()['max_1']),
                    static::percentuale(Impostazione::scontiBase()['max_2']),
                ))
                ->columns(2)
                ->schema([
                    Forms\Components\Toggle::make('sconti_abilitati')
                        ->label('Può applicare sconti')
                        ->default(true)
                        ->live()
                        ->columnSpanFull(),
                    Forms\Components\TextInput::make('sconto_max_1')
                        ->label('1° sconto massimo')
                        ->numeric()
                        ->minValue(0)
                        ->maxValue(100)
                        ->suffix('%')
                        ->placeholder(fn () => static::percentuale(Impostazione::scontiBase()['max_1']).' (regola base)')
                        ->visible(fn (Forms\Get $get) => (bool) $get('sconti_abilitati')),
                    Forms\Components\TextInput::make('sconto_max_2')
                        ->label('Sconto extra massimo')
                        ->numeric()
                        ->minValue(0)
                        ->maxValue(100)
                        ->suffix('%')
                        ->placeholder(fn () => static::percentuale(Impostazione::scontiBase()['max_2']).' (regola base)')
                        ->visible(fn (Forms\Get $get) => (bool) $get('sconti_abilitati')),
                ]),
            Forms\Components\Section::make('Anagrafica')
                ->description('Campi facoltativi.')
                ->columns(2)
                ->schema([
                    Forms\Components\TextInput::make('nome')->label('Nome'),
                    Forms\Components\TextInput::make('cognome')->label('Cognome'),
                    Forms\Components\TextInput::make('ragione_sociale')->label('Ragione sociale'),
                    Forms\Components\TextInput::make('email')->label('Email')->email(),
                    Forms\Components\TextInput::make('telefono')->label('Telefono')->tel(),
                    Forms\Components\TextInput::make('indirizzo')->label('Indirizzo'),
                    Forms\Components\TextInput::make('cap')->label('CAP')->maxLength(10),
                    Forms\Components\TextInput::make('citta')->label('Città'),
                    Forms\Components\TextInput::make('provincia')->label('Provincia')->maxLength(5),
                    Forms\Components\Textarea::make('note')->label('Note')->columnSpanFull(),
                ]),
        ]);
    }

    public static function table(Table $table): Table
    {
        return $table
            ->defaultSort('created_at', 'desc')
            ->columns([
                Tables\Columns\TextColumn::make('nominativo')->label('Nominativo')->searchable(['nome', 'cognome', 'ragione_sociale']),
                Tables\Columns\TextColumn::make('username')->label('Nome utente')->searchable()->placeholder('—'),
                Tables\Columns\TextColumn::make('email')->label('Email')->searchable()->copyable()->placeholder('—'),
                Tables\Columns\TextColumn::make('telefono')->label('Telefono')->placeholder('—'),
                Tables\Columns\TextColumn::make('citta')->label('Città')->placeholder('—'),
                Tables\Columns\TextColumn::make('preventivi_count')->label('Preventivi')->counts('preventivi'),
                Tables\Columns\TextColumn::make('created_at')->label('Registrato')->dateTime('d/m/Y')->sortable(),
            ])
            ->actions([
                Tables\Actions\ViewAction::make(),
                Tables\Actions\EditAction::make(),
                Tables\Actions\DeleteAction::make()
                    ->modalDescription('Verrà eliminato definitivamente il cliente insieme a tutti i suoi preventivi e ai file associati (PDF, immagini)')
                    ->successRedirectUrl(static::getUrl('index')),
            ])
            ->bulkActions([
                Tables\Actions\BulkActionGroup::make([
                    Tables\Actions\DeleteBulkAction::make()
                        ->modalDescription('I clienti selezionati verranno eliminati definitivamente insieme a tutti i loro preventivi e ai file associati (PDF, immagini)')
                        ->successRedirectUrl(static::getUrl('index')),
                ]),
            ]);
    }

    public static function infolist(Infolist $infolist): Infolist
    {
        return $infolist->schema([
            Infolists\Components\View::make('filament.infolists.cliente-password-reveal')
                ->visible(fn () => filled(session('cliente_password_plain')))
                ->viewData(fn () => [
                    'username' => session('cliente_username_plain'),
                    'password' => session('cliente_password_plain'),
                ]),
            Infolists\Components\Section::make('Accesso')
                ->columns(2)
                ->schema([
                    Infolists\Components\TextEntry::make('username')->label('Nome utente')->copyable()->placeholder('—'),
                    Infolists\Components\TextEntry::make('created_at')->label('Cliente dal')->dateTime('d/m/Y H:i'),
                    Infolists\Components\TextEntry::make('scontistica')
                        ->label('Scontistica')
                        ->state(function (Cliente $record): string {
                            if (! $record->sconti_abilitati) {
                                return 'Disabilitata';
                            }
                            $massimi = $record->scontiMassimi();
                            $base = $record->sconto_max_1 === null && $record->sconto_max_2 === null ? ' (regola base)' : '';

                            return sprintf('Fino al %s%% + extra fino al %s%%%s',
                                static::percentuale($massimi['max_1']), static::percentuale($massimi['max_2']), $base);
                        })
                        ->columnSpanFull(),
                ]),
            Infolists\Components\Section::make('Anagrafica')
                ->columns(3)
                ->schema([
                    Infolists\Components\TextEntry::make('nominativo')->label('Nominativo')->placeholder('—'),
                    Infolists\Components\TextEntry::make('email')->label('Email')->copyable()->placeholder('—'),
                    Infolists\Components\TextEntry::make('telefono')->label('Telefono')->placeholder('—'),
                    Infolists\Components\TextEntry::make('indirizzo')->label('Indirizzo')->placeholder('—'),
                    Infolists\Components\TextEntry::make('cap')->label('CAP')->placeholder('—'),
                    Infolists\Components\TextEntry::make('citta')->label('Città')->placeholder('—'),
                    Infolists\Components\TextEntry::make('provincia')->label('Provincia')->placeholder('—'),
                    Infolists\Components\TextEntry::make('note')->label('Note')->columnSpanFull()->placeholder('—'),
                ]),
        ]);
    }

    /** 50.00 -> "50", 12.50 -> "12,5" */
    private static function percentuale(mixed $valore): string
    {
        return rtrim(rtrim(number_format((float) $valore, 2, ',', ''), '0'), ',');
    }

    public static function getPages(): array
    {
        return [
            'index' => Pages\ListClientes::route('/'),
            'create' => Pages\CreateCliente::route('/create'),
            'view' => Pages\ViewCliente::route('/{record}'),
            'edit' => Pages\EditCliente::route('/{record}/edit'),
        ];
    }
}