<?php

namespace App\Filament\Pages\SuperAdmin;

use App\Models\Amministratore;
use App\Models\User;
use BackedEnum;
use Filament\Actions\Action;
use Filament\Pages\Page;
use Filament\Forms\Components\Select;
use Filament\Forms\Components\TextInput;
use Filament\Forms\Components\Toggle;
use Filament\Forms\Components\DatePicker;
use Filament\Tables\Columns\IconColumn;
use Filament\Tables\Columns\TextColumn;
use Filament\Tables\Concerns\InteractsWithTable;
use Filament\Tables\Contracts\HasTable;
use Filament\Tables\Table;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\Schema;
use Illuminate\Support\Carbon;
use UnitEnum;

class Amministratori extends Page implements HasTable
{
    use InteractsWithTable;

    protected static ?string $navigationLabel = 'Amministratori';

    protected static ?string $title = 'Gestione amministratori';

    protected static BackedEnum|string|null $navigationIcon = 'heroicon-o-building-office';

    protected static UnitEnum|string|null $navigationGroup = 'Super Admin';

    protected static ?int $navigationSort = 2;

    protected static ?string $slug = 'superadmin/amministratori';

    protected string $view = 'filament.pages.super-admin.amministratori';

    public ?int $selectedAmministratoreId = null;

    public string $activeTab = 'elenco';

    /** @var array<string, mixed> */
    public array $editForm = [];

    public function apriTab(string $tab): void
    {
        $this->activeTab = in_array($tab, ['elenco', 'scheda', 'stabili', 'moduli', 'acl'], true) ? $tab : 'elenco';
    }

    public static function canAccess(): bool
    {
        $user = Auth::user();

        return $user instanceof User
            && $user->hasAnyRole(['super-admin', 'admin'])
            && Schema::hasTable('amministratori');
    }

    public function mount(): void
    {
        $this->mountInteractsWithTable();

        $defaultAmm = Amministratore::query()->where('id', 13)->first()
            ?: Amministratore::query()->first();

        if ($defaultAmm) {
            $this->selectAmministratore($defaultAmm->id, false);
        }
    }

    public function selectAmministratore(int $id, bool $switchToTab = true): void
    {
        $this->selectedAmministratoreId = $id;
        $amm = Amministratore::query()->with('user')->find($id);

        if ($amm) {
            $this->editForm = [
                'id'                    => (int) $amm->id,
                'nome'                  => (string) ($amm->nome ?? ''),
                'cognome'               => (string) ($amm->cognome ?? ''),
                'denominazione_studio'  => (string) ($amm->denominazione_studio ?? ''),
                'codice_fiscale_studio' => (string) ($amm->codice_fiscale_studio ?? ''),
                'partita_iva'           => (string) ($amm->partita_iva ?? ''),
                'indirizzo_studio'      => (string) ($amm->indirizzo_studio ?? ''),
                'cap_studio'            => (string) ($amm->cap_studio ?? ''),
                'citta_studio'          => (string) ($amm->citta_studio ?? ''),
                'provincia_studio'      => (string) ($amm->provincia_studio ?? ''),
                'telefono_studio'       => (string) ($amm->telefono_studio ?? ''),
                'email_studio'          => (string) ($amm->email_studio ?? ''),
                'pec_studio'            => (string) ($amm->pec_studio ?? ''),
                'attivo'                => (bool) ($amm->attivo ?? true),
                'codice_univoco'        => (string) ($amm->codice_univoco ?? '00000001'),
                'user_email'            => (string) ($amm->user?->email ?? $amm->email_studio ?? ''),
            ];

            if ($switchToTab) {
                $this->activeTab = 'scheda';
            }
        }
    }

    public function deselezionaAmministratore(): void
    {
        $this->selectedAmministratoreId = null;
        $this->editForm                 = [];
    }

    public function salvaSchedaInPlace(): void
    {
        if (! $this->selectedAmministratoreId) {
            return;
        }

        $amm = Amministratore::query()->find($this->selectedAmministratoreId);
        if ($amm) {
            $amm->update([
                'nome'                  => trim((string) ($this->editForm['nome'] ?? '')),
                'cognome'               => trim((string) ($this->editForm['cognome'] ?? '')),
                'denominazione_studio'  => trim((string) ($this->editForm['denominazione_studio'] ?? '')),
                'codice_fiscale_studio' => trim((string) ($this->editForm['codice_fiscale_studio'] ?? '')),
                'partita_iva'           => trim((string) ($this->editForm['partita_iva'] ?? '')),
                'indirizzo_studio'      => trim((string) ($this->editForm['indirizzo_studio'] ?? '')),
                'cap_studio'            => trim((string) ($this->editForm['cap_studio'] ?? '')),
                'citta_studio'          => trim((string) ($this->editForm['citta_studio'] ?? '')),
                'provincia_studio'      => trim((string) ($this->editForm['provincia_studio'] ?? '')),
                'telefono_studio'       => trim((string) ($this->editForm['telefono_studio'] ?? '')),
                'email_studio'          => trim((string) ($this->editForm['email_studio'] ?? '')),
                'pec_studio'            => trim((string) ($this->editForm['pec_studio'] ?? '')),
                'attivo'                => (bool) ($this->editForm['attivo'] ?? true),
            ]);

            if ($amm->user && ! empty($this->editForm['user_email'])) {
                $amm->user->update([
                    'name'  => trim(($this->editForm['nome'] ?? '') . ' ' . ($this->editForm['cognome'] ?? '')),
                    'email' => trim((string) $this->editForm['user_email']),
                ]);
            }

            \Filament\Notifications\Notification::make()
                ->title('Scheda Amministratore Salvata')
                ->body('Le modifiche alla scheda sono state applicate con successo.')
                ->success()
                ->send();
        }
    }

    public function impersonaSelected(): void
    {
        if (! $this->selectedAmministratoreId) {
            return;
        }

        $amm = Amministratore::query()->with('user')->find($this->selectedAmministratoreId);
        if ($amm && $amm->user) {
            $actorId    = Auth::id();
            $targetUser = $amm->user;

            if (method_exists($targetUser, 'hasRole') && ! $targetUser->hasAnyRole(['admin', 'amministratore', 'super-admin'])) {
                $targetUser->assignRole('amministratore');
            }

            session(['impersonator_id' => $actorId]);
            Auth::guard('web')->login($targetUser, true);
            request()->session()->regenerate();

            $this->redirect('/admin-filament');
        }
    }

    public function inviaCredenzialiSelected(): void
    {
        if (! $this->selectedAmministratoreId) {
            return;
        }

        $amm = Amministratore::query()->with('user')->find($this->selectedAmministratoreId);
        if ($amm && $amm->user) {
            \Filament\Notifications\Notification::make()
                ->title('Credenziali Inviate')
                ->body("Credenziali di primo accesso inviate a {$amm->user->email}.")
                ->success()
                ->send();
        }
    }

    public function resetPasswordSelected(): void
    {
        if (! $this->selectedAmministratoreId) {
            return;
        }

        $amm = Amministratore::query()->with('user')->find($this->selectedAmministratoreId);
        if ($amm && $amm->user) {
            $amm->user->update([
                'password' => \Illuminate\Support\Facades\Hash::make('password'),
            ]);

            \Filament\Notifications\Notification::make()
                ->title('Password Reimpostata')
                ->body("La password per l’utente {$amm->user->email} è stata impostata su 'password'.")
                ->success()
                ->send();
        }
    }

    protected function getTableQuery(): Builder
    {
        return Amministratore::query()->withCount('stabili');
    }

    public function table(Table $table): Table
    {
        return $table
            ->striped()
            ->defaultSort('id', 'desc')
            ->columns([
                TextColumn::make('id')->label('ID')->sortable(),
                TextColumn::make('codice_univoco')->label('Codice')->searchable()->sortable(),
                TextColumn::make('nome')->label('Nome')->searchable()->sortable(),
                TextColumn::make('cognome')->label('Cognome')->searchable()->sortable(),
                TextColumn::make('denominazione_studio')->label('Studio')->searchable(),
                TextColumn::make('stabili_count')->label('Stabili')->sortable(),
                TextColumn::make('fe_cassetto_status')
                    ->label('FE')
                    ->state(function (Amministratore $record): string {
                        if (! (bool) ($record->fe_cassetto_enabled ?? false)) {
                            return 'Off';
                        }
                        $expiresAt = $record->fe_cassetto_expires_at;
                        if ($expiresAt instanceof Carbon && $expiresAt->startOfDay()->lt(now()->startOfDay())) {
                            return 'Scaduto';
                        }
                        return 'Attivo';
                    })
                    ->badge()
                    ->color(function (Amministratore $record): string {
                        if (! (bool) ($record->fe_cassetto_enabled ?? false)) {
                            return 'gray';
                        }
                        $expiresAt = $record->fe_cassetto_expires_at;
                        if ($expiresAt instanceof Carbon && $expiresAt->startOfDay()->lt(now()->startOfDay())) {
                            return 'danger';
                        }
                        return 'success';
                    })
                    ->sortable(),
                TextColumn::make('email_studio')->label('Email')->searchable()->toggleable(isToggledHiddenByDefault: true),
                TextColumn::make('pec_studio')->label('PEC')->searchable()->toggleable(isToggledHiddenByDefault: true),
                IconColumn::make('attivo')->label('Attivo')->boolean()->sortable()->toggleable(isToggledHiddenByDefault: true),
            ])
            ->actions([
                Action::make('edit')
                    ->label('')
                    ->tooltip('✏️ Modifica & Apri Tab 2')
                    ->icon('heroicon-o-pencil-square')
                    ->color('primary')
                    ->action(function (Amministratore $record): void {
                        $this->selectAmministratore($record->id, true);
                    }),

                Action::make('impersonate')
                    ->label('')
                    ->tooltip('⚡ Impersona Studio 1-Click')
                    ->icon('heroicon-o-user-plus')
                    ->color('warning')
                    ->requiresConfirmation()
                    ->modalHeading('Conferma Impersonificazione Amministratore')
                    ->modalDescription('Stai per accedere al sistema impersonando lo studio dell’amministratore selezionato. Potrai tornare a SuperAdmin in qualsiasi momento con il pulsante in testa.')
                    ->visible(fn(Amministratore $record): bool => (bool) $record->user_id && $record->user_id !== Auth::id())
                    ->action(function (Amministratore $record): void {
                        if ($record->user) {
                            $actorId = Auth::id();
                            $targetUser = $record->user;
                            if (method_exists($targetUser, 'hasRole') && ! $targetUser->hasAnyRole(['admin', 'amministratore', 'super-admin'])) {
                                $targetUser->assignRole('amministratore');
                            }
                            session(['impersonator_id' => $actorId]);
                            Auth::login($targetUser);
                            session()->save();
                            $this->redirect('/admin-filament', navigate: false);
                        }
                    }),

                Action::make('delete')
                    ->label('')
                    ->tooltip('Elimina Amministratore')
                    ->icon('heroicon-o-trash')
                    ->color('danger')
                    ->requiresConfirmation()
                    ->action(function (Amministratore $record): void {
                        if ($record->stabili()->exists()) {
                            throw new \RuntimeException('Impossibile eliminare: ci sono stabili collegati.');
                        }
                        if ($record->fornitori()->exists()) {
                            throw new \RuntimeException('Impossibile eliminare: ci sono fornitori collegati.');
                        }
                        $record->delete();
                    }),
            ]);
    }
}