<?php

namespace App\Filament\Resources;

use App\Filament\Clusters\DailyOps\DailyOpsCluster;
use App\Filament\Resources\TenantResource\Pages;
use App\Filament\Resources\TenantResource\RelationManagers\PackagePurchasesRelationManager;
use App\Filament\Resources\TenantResource\RelationManagers\TenantPackagesRelationManager;
use App\Filament\Resources\TenantResource\Schemas\TenantInfolist;
use App\Jobs\AnonymizeAccount;
use App\Models\Tenant;
use App\Notifications\InactiveTenantDeletionWarning;
use App\Services\Tenant\TenantLifecycleLogger;
use BackedEnum;
use Carbon\Carbon;
use Filament\Actions;
use Filament\Facades\Filament;
use Filament\Forms;
use Filament\Forms\Components\KeyValue;
use Filament\Forms\Components\Select;
use Filament\Forms\Components\TextInput;
use Filament\Forms\Components\Toggle;
use Filament\Notifications\Notification;
use Filament\Pages\Enums\SubNavigationPosition;
use Filament\Resources\Pages\Page;
use Filament\Resources\Resource;
use Filament\Schemas\Schema;
use Filament\Tables;
use Filament\Tables\Table;
use Illuminate\Support\Facades\Notification as NotificationFacade;
use Illuminate\Support\Facades\Route;
use UnitEnum;

class TenantResource extends Resource
{
    protected static ?string $model = Tenant::class;

    protected static ?string $cluster = DailyOpsCluster::class;

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

    protected static UnitEnum|string|null $navigationGroup = null;

    protected static ?SubNavigationPosition $subNavigationPosition = SubNavigationPosition::Top;

    public static function getNavigationGroup(): UnitEnum|string|null
    {
        return __('admin.nav.tenants');
    }

    protected static ?int $navigationSort = 10;

    public static function form(Schema $form): Schema
    {

        return $form->schema([
            TextInput::make('user.full_name')
                ->label(__('admin.tenants.fields.name'))
                ->required()
                ->readOnly()
                ->dehydrated(false)
                ->default(fn (Tenant $record) => $record->user?->full_name ?? 'Unbekannt'),
            TextInput::make('slug')
                ->label(__('admin.tenants.fields.slug'))
                ->required()
                ->unique(ignoreRecord: true)
                ->maxLength(255),
            TextInput::make('contact_email')
                ->label(__('admin.tenants.fields.contact_email'))
                ->email()
                ->required()
                ->maxLength(255),
            TextInput::make('paddle_customer_id')
                ->label('Paddle Customer ID')
                ->maxLength(191)
                ->helperText('Verknuepfung mit Paddle Billing Kundenkonto.')
                ->nullable(),
            TextInput::make('total_revenue')
                ->label(__('admin.tenants.fields.total_revenue'))
                ->prefix('€')
                ->numeric()
                ->step(0.01)
                ->readOnly(),
            Select::make('active_reseller_package_id')
                ->label(__('admin.tenants.fields.active_reseller_package'))
                ->relationship('activeResellerPackage.package', 'name')
                ->searchable()
                ->preload()
                ->nullable(),
            TextInput::make('remaining_events')
                ->label(__('admin.tenants.fields.remaining_events'))
                ->readOnly()
                ->dehydrated(false)
                ->default(fn (Tenant $record) => $record->activeResellerPackage?->remaining_events ?? 0),
            Toggle::make('is_active')
                ->label(__('admin.tenants.fields.is_active'))
                ->default(true),
            Toggle::make('is_suspended')
                ->label(__('admin.tenants.fields.is_suspended'))
                ->default(false),
            KeyValue::make('features')
                ->label(__('admin.tenants.fields.features'))
                ->keyLabel(__('admin.common.key'))
                ->valueLabel(__('admin.common.value')),
        ])->columns(2);
    }

    public static function infolist(Schema $schema): Schema
    {
        return TenantInfolist::configure($schema);
    }

    public static function getRecordSubNavigation(Page $page): array
    {
        return $page->generateNavigationItems([
            Pages\ViewTenant::class,
            Pages\ViewTenantLifecycle::class,
            Pages\EditTenant::class,
        ]);
    }

    public static function table(Table $table): Table
    {

        return $table
            ->columns([
                Tables\Columns\TextColumn::make('id')->sortable(),
                Tables\Columns\TextColumn::make('user.full_name')
                    ->label(__('admin.tenants.fields.name'))
                    ->searchable()
                    ->sortable()
                    ->getStateUsing(fn (Tenant $record) => $record->user?->full_name ?? 'Unbekannt'),
                Tables\Columns\TextColumn::make('slug')->searchable(),
                Tables\Columns\TextColumn::make('contact_email'),
                Tables\Columns\TextColumn::make('paddle_customer_id')
                    ->label('Paddle Customer')
                    ->toggleable(isToggledHiddenByDefault: true)
                    ->formatStateUsing(fn ($state) => $state ?: '-'),
                Tables\Columns\TextColumn::make('active_reseller_package_id')
                    ->label(__('admin.tenants.fields.active_package'))
                    ->badge()
                    ->color('success')
                    ->getStateUsing(fn (Tenant $record) => $record->activeResellerPackage?->name ?? 'Kein aktives Package'),
                Tables\Columns\TextColumn::make('active_reseller_package_id')
                    ->label(__('admin.tenants.fields.remaining_events'))
                    ->badge()
                    ->color(fn ($state) => $state < 1 ? 'danger' : 'success')
                    ->getStateUsing(fn (Tenant $record) => $record->activeResellerPackage?->remaining_events ?? 0),
                Tables\Columns\TextColumn::make('active_reseller_package_id')
                    ->dateTime()
                    ->label(__('admin.tenants.fields.package_expires_at'))
                    ->badge()
                    ->color(fn ($state) => $state && $state->isPast() ? 'danger' : 'success')
                    ->getStateUsing(fn (Tenant $record) => $record->activeResellerPackage?->expires_at),
                Tables\Columns\TextColumn::make('total_revenue')
                    ->money('EUR')
                    ->sortable(),
                Tables\Columns\IconColumn::make('is_active')
                    ->boolean()
                    ->color(fn (bool $state): string => $state ? 'success' : 'danger'),
                Tables\Columns\IconColumn::make('is_suspended')
                    ->label(__('admin.tenants.fields.is_suspended'))
                    ->boolean()
                    ->color(fn (bool $state): string => $state ? 'warning' : 'success')
                    ->toggleable(isToggledHiddenByDefault: true),
                Tables\Columns\TextColumn::make('pending_deletion_at')
                    ->label(__('admin.tenants.fields.pending_deletion_at'))
                    ->dateTime()
                    ->toggleable(isToggledHiddenByDefault: true),
                Tables\Columns\TextColumn::make('deletion_warning_sent_at')
                    ->label(__('admin.tenants.fields.deletion_warning_sent_at'))
                    ->dateTime()
                    ->toggleable(isToggledHiddenByDefault: true),
                Tables\Columns\TextColumn::make('anonymized_at')
                    ->label(__('admin.tenants.fields.anonymized_at'))
                    ->dateTime()
                    ->toggleable(isToggledHiddenByDefault: true),
                Tables\Columns\TextColumn::make('last_activity_at')->since()->label(__('admin.common.last_activity')),
                Tables\Columns\TextColumn::make('created_at')->dateTime()->toggleable(isToggledHiddenByDefault: true),
            ])
            ->filters([])
            ->actions([
                Actions\EditAction::make(),
                Actions\Action::make('add_package')
                    ->label('Package hinzufügen')
                    ->icon('heroicon-o-plus')
                    ->form([
                        Select::make('package_id')
                            ->label('Package')
                            ->options(\App\Models\Package::where('type', 'reseller')->pluck('name', 'id'))
                            ->searchable()
                            ->preload()
                            ->required(),
                        Forms\Components\DateTimePicker::make('expires_at')
                            ->label('Ablaufdatum')
                            ->default(now()->addYear()),
                        Forms\Components\Textarea::make('reason')->label('Grund')->rows(3),
                    ])
                    ->action(function (Tenant $record, array $data) {
                        \App\Models\TenantPackage::create([
                            'tenant_id' => $record->id,
                            'package_id' => $data['package_id'],
                            'expires_at' => $data['expires_at'],
                            'active' => true,
                            'reason' => $data['reason'] ?? null,
                        ]);
                        \App\Models\PackagePurchase::create([
                            'tenant_id' => $record->id,
                            'package_id' => $data['package_id'],
                            'provider' => 'manual',
                            'provider_id' => 'manual',
                            'type' => 'reseller_subscription',
                            'price' => 0,
                            'metadata' => ['reason' => $data['reason'] ?? 'manual assignment'],
                        ]);
                    }),
                Actions\Action::make('export')
                    ->label('Daten exportieren')
                    ->icon('heroicon-o-arrow-down-tray')
                    ->url(fn (Tenant $record) => Route::has('admin.tenants.export') ? route('admin.tenants.export', $record) : null)
                    ->visible(fn () => Route::has('admin.tenants.export'))
                    ->openUrlInNewTab(),
                Actions\ActionGroup::make(static::lifecycleActions())
                    ->label(__('admin.tenants.actions.lifecycle'))
                    ->icon('heroicon-o-shield-exclamation'),
            ])
            ->bulkActions([
                Actions\DeleteBulkAction::make(),
            ]);
    }

    public static function getPages(): array
    {
        return [
            'index' => Pages\ListTenants::route('/'),
            'view' => Pages\ViewTenant::route('/{record}'),
            'lifecycle' => Pages\ViewTenantLifecycle::route('/{record}/lifecycle'),
            'edit' => Pages\EditTenant::route('/{record}/edit'),
        ];
    }

    public static function getRelations(): array
    {

        return [
            TenantPackagesRelationManager::class,
            PackagePurchasesRelationManager::class,
        ];
    }

    /**
     * @return array<int, Actions\Action>
     */
    public static function lifecycleActions(): array
    {
        return [
            Actions\Action::make('activate')
                ->label(__('admin.tenants.actions.activate'))
                ->icon('heroicon-o-check-circle')
                ->color('success')
                ->visible(fn (Tenant $record): bool => ! $record->is_active && ! $record->anonymized_at)
                ->authorize(fn (Tenant $record): bool => Filament::auth()->user()?->can('update', $record) ?? false)
                ->action(function (Tenant $record): bool {
                    $updated = $record->update(['is_active' => true]);

                    app(TenantLifecycleLogger::class)->record(
                        $record,
                        'activated',
                        actor: Filament::auth()->user()
                    );

                    return $updated;
                }),
            Actions\Action::make('deactivate')
                ->label(__('admin.tenants.actions.deactivate'))
                ->icon('heroicon-o-no-symbol')
                ->color('danger')
                ->requiresConfirmation()
                ->visible(fn (Tenant $record): bool => (bool) $record->is_active && ! $record->anonymized_at)
                ->authorize(fn (Tenant $record): bool => Filament::auth()->user()?->can('update', $record) ?? false)
                ->action(function (Tenant $record): bool {
                    $updated = $record->update(['is_active' => false]);

                    app(TenantLifecycleLogger::class)->record(
                        $record,
                        'deactivated',
                        actor: Filament::auth()->user()
                    );

                    return $updated;
                }),
            Actions\Action::make('suspend')
                ->label(__('admin.tenants.actions.suspend'))
                ->icon('heroicon-o-pause-circle')
                ->color('warning')
                ->requiresConfirmation()
                ->visible(fn (Tenant $record): bool => ! $record->is_suspended && ! $record->anonymized_at)
                ->authorize(fn (Tenant $record): bool => Filament::auth()->user()?->can('suspend', $record) ?? false)
                ->action(function (Tenant $record): bool {
                    $updated = $record->update(['is_suspended' => true]);

                    app(TenantLifecycleLogger::class)->record(
                        $record,
                        'suspended',
                        actor: Filament::auth()->user()
                    );

                    return $updated;
                }),
            Actions\Action::make('unsuspend')
                ->label(__('admin.tenants.actions.unsuspend'))
                ->icon('heroicon-o-play-circle')
                ->color('success')
                ->visible(fn (Tenant $record): bool => (bool) $record->is_suspended && ! $record->anonymized_at)
                ->authorize(fn (Tenant $record): bool => Filament::auth()->user()?->can('suspend', $record) ?? false)
                ->action(function (Tenant $record): bool {
                    $updated = $record->update(['is_suspended' => false]);

                    app(TenantLifecycleLogger::class)->record(
                        $record,
                        'unsuspended',
                        actor: Filament::auth()->user()
                    );

                    return $updated;
                }),
            Actions\Action::make('schedule_deletion')
                ->label(__('admin.tenants.actions.schedule_deletion'))
                ->icon('heroicon-o-calendar-days')
                ->color('warning')
                ->visible(fn (Tenant $record): bool => ! $record->anonymized_at && $record->pending_deletion_at === null)
                ->authorize(fn (Tenant $record): bool => Filament::auth()->user()?->can('update', $record) ?? false)
                ->form([
                    Forms\Components\DateTimePicker::make('pending_deletion_at')
                        ->label(__('admin.tenants.fields.pending_deletion_at'))
                        ->required()
                        ->minDate(now()->addDay()),
                    Toggle::make('send_warning')
                        ->label(__('admin.tenants.actions.send_warning'))
                        ->default(true),
                ])
                ->action(function (Tenant $record, array $data): void {
                    $plannedDeletion = Carbon::parse($data['pending_deletion_at']);
                    $update = [
                        'pending_deletion_at' => $plannedDeletion,
                    ];

                    if (($data['send_warning'] ?? false) === true) {
                        $email = $record->contact_email
                            ?? $record->email
                            ?? $record->user?->email;

                        if ($email) {
                            NotificationFacade::route('mail', $email)
                                ->notify(new InactiveTenantDeletionWarning($record, $plannedDeletion));
                            $update['deletion_warning_sent_at'] = now();
                        } else {
                            Notification::make()
                                ->danger()
                                ->title(__('admin.tenants.actions.send_warning_missing_title'))
                                ->body(__('admin.tenants.actions.send_warning_missing_body'))
                                ->send();
                        }
                    }

                    $record->forceFill($update)->save();

                    app(TenantLifecycleLogger::class)->record(
                        $record,
                        'deletion_scheduled',
                        [
                            'pending_deletion_at' => $plannedDeletion->toDateTimeString(),
                            'send_warning' => (bool) ($data['send_warning'] ?? false),
                        ],
                        Filament::auth()->user()
                    );
                })
                ->successNotificationTitle(__('admin.tenants.actions.schedule_deletion_success')),
            Actions\Action::make('cancel_deletion')
                ->label(__('admin.tenants.actions.cancel_deletion'))
                ->icon('heroicon-o-x-circle')
                ->requiresConfirmation()
                ->visible(fn (Tenant $record): bool => $record->pending_deletion_at !== null && ! $record->anonymized_at)
                ->authorize(fn (Tenant $record): bool => Filament::auth()->user()?->can('update', $record) ?? false)
                ->action(function (Tenant $record): void {
                    $previous = $record->pending_deletion_at?->toDateTimeString();

                    $record->forceFill([
                        'pending_deletion_at' => null,
                        'deletion_warning_sent_at' => null,
                    ])->save();

                    app(TenantLifecycleLogger::class)->record(
                        $record,
                        'deletion_cancelled',
                        [
                            'pending_deletion_at' => $previous,
                        ],
                        Filament::auth()->user()
                    );
                })
                ->successNotificationTitle(__('admin.tenants.actions.cancel_deletion_success')),
            Actions\Action::make('anonymize_now')
                ->label(__('admin.tenants.actions.anonymize_now'))
                ->icon('heroicon-o-trash')
                ->color('danger')
                ->requiresConfirmation()
                ->visible(fn (Tenant $record): bool => ! $record->anonymized_at)
                ->authorize(fn (Tenant $record): bool => Filament::auth()->user()?->can('update', $record) ?? false)
                ->action(function (Tenant $record): void {
                    AnonymizeAccount::dispatch(null, $record->id);

                    app(TenantLifecycleLogger::class)->record(
                        $record,
                        'anonymize_requested',
                        actor: Filament::auth()->user()
                    );
                })
                ->successNotificationTitle(__('admin.tenants.actions.anonymize_success')),
        ];
    }

    /**
     * @return array<int, Actions\Action>
     */
    public static function lifecycleManagementActions(): array
    {
        return [
            Actions\Action::make('update_limits')
                ->label(__('admin.tenants.actions.update_limits'))
                ->icon('heroicon-o-adjustments-horizontal')
                ->modalWidth('2xl')
                ->authorize(fn (Tenant $record): bool => Filament::auth()->user()?->can('update', $record) ?? false)
                ->form([
                    TextInput::make('max_photos_per_event')
                        ->label(__('admin.tenants.fields.max_photos_per_event'))
                        ->numeric()
                        ->minValue(0)
                        ->default(fn (Tenant $record) => $record->max_photos_per_event),
                    TextInput::make('max_storage_mb')
                        ->label(__('admin.tenants.fields.max_storage_mb'))
                        ->numeric()
                        ->minValue(0)
                        ->default(fn (Tenant $record) => $record->max_storage_mb),
                    Forms\Components\Textarea::make('note')
                        ->label(__('admin.tenants.actions.note'))
                        ->rows(3),
                ])
                ->action(function (Tenant $record, array $data): void {
                    $before = [
                        'max_photos_per_event' => $record->max_photos_per_event,
                        'max_storage_mb' => $record->max_storage_mb,
                    ];

                    $record->forceFill([
                        'max_photos_per_event' => $data['max_photos_per_event'],
                        'max_storage_mb' => $data['max_storage_mb'],
                    ])->save();

                    $after = [
                        'max_photos_per_event' => $record->max_photos_per_event,
                        'max_storage_mb' => $record->max_storage_mb,
                    ];

                    app(TenantLifecycleLogger::class)->record(
                        $record,
                        'limits_updated',
                        [
                            'before' => $before,
                            'after' => $after,
                            'note' => $data['note'] ?? null,
                        ],
                        Filament::auth()->user()
                    );
                }),
            Actions\Action::make('update_subscription_expires_at')
                ->label(__('admin.tenants.actions.update_subscription_expires_at'))
                ->icon('heroicon-o-calendar')
                ->authorize(fn (Tenant $record): bool => Filament::auth()->user()?->can('update', $record) ?? false)
                ->form([
                    Forms\Components\DateTimePicker::make('subscription_expires_at')
                        ->label(__('admin.tenants.fields.subscription_expires_at'))
                        ->default(fn (Tenant $record) => $record->subscription_expires_at),
                    Forms\Components\Textarea::make('note')
                        ->label(__('admin.tenants.actions.note'))
                        ->rows(3),
                ])
                ->action(function (Tenant $record, array $data): void {
                    $before = [
                        'subscription_expires_at' => optional($record->subscription_expires_at)->toDateTimeString(),
                    ];

                    $record->forceFill([
                        'subscription_expires_at' => $data['subscription_expires_at'],
                    ])->save();

                    $after = [
                        'subscription_expires_at' => optional($record->subscription_expires_at)->toDateTimeString(),
                    ];

                    app(TenantLifecycleLogger::class)->record(
                        $record,
                        'subscription_expires_at_updated',
                        [
                            'before' => $before,
                            'after' => $after,
                            'note' => $data['note'] ?? null,
                        ],
                        Filament::auth()->user()
                    );
                }),
            Actions\Action::make('set_grace_period')
                ->label(__('admin.tenants.actions.set_grace_period'))
                ->icon('heroicon-o-clock')
                ->authorize(fn (Tenant $record): bool => Filament::auth()->user()?->can('update', $record) ?? false)
                ->form([
                    Forms\Components\DateTimePicker::make('grace_period_ends_at')
                        ->label(__('admin.tenants.fields.grace_period_ends_at'))
                        ->required()
                        ->minDate(now())
                        ->default(fn (Tenant $record) => $record->grace_period_ends_at),
                    Forms\Components\Textarea::make('note')
                        ->label(__('admin.tenants.actions.note'))
                        ->rows(3),
                ])
                ->action(function (Tenant $record, array $data): void {
                    $record->forceFill([
                        'grace_period_ends_at' => $data['grace_period_ends_at'],
                    ])->save();

                    app(TenantLifecycleLogger::class)->record(
                        $record,
                        'grace_period_set',
                        [
                            'grace_period_ends_at' => optional($record->grace_period_ends_at)->toDateTimeString(),
                            'note' => $data['note'] ?? null,
                        ],
                        Filament::auth()->user()
                    );
                }),
            Actions\Action::make('clear_grace_period')
                ->label(__('admin.tenants.actions.clear_grace_period'))
                ->icon('heroicon-o-x-circle')
                ->color('gray')
                ->requiresConfirmation()
                ->visible(fn (Tenant $record): bool => $record->grace_period_ends_at !== null)
                ->authorize(fn (Tenant $record): bool => Filament::auth()->user()?->can('update', $record) ?? false)
                ->action(function (Tenant $record): void {
                    $previous = $record->grace_period_ends_at?->toDateTimeString();

                    $record->forceFill([
                        'grace_period_ends_at' => null,
                    ])->save();

                    app(TenantLifecycleLogger::class)->record(
                        $record,
                        'grace_period_cleared',
                        [
                            'grace_period_ends_at' => $previous,
                        ],
                        Filament::auth()->user()
                    );
                }),
        ];
    }
}