<?php

namespace App\Filament\Resources\AiModels;

use App\Api\Plugins\ApiPluginInterface;
use App\Api\Plugins\PluginLoader;
use App\Models\AiModel;
use App\Models\ApiProvider;
use BackedEnum;
use Filament\Actions\Action;
use Filament\Actions\BulkActionGroup;
use Filament\Actions\CreateAction;
use Filament\Actions\DeleteBulkAction;
use Filament\Actions\EditAction;
use Filament\Forms\Components\Select;
use Filament\Forms\Components\Textarea;
use Filament\Forms\Components\TextInput;
use Filament\Forms\Components\Toggle;
use Filament\Resources\Resource;
use Filament\Schemas\Components\Section;
use Filament\Schemas\Schema;
use Filament\Tables\Columns\IconColumn;
use Filament\Tables\Columns\TextColumn;
use Filament\Tables\Table;
use Illuminate\Database\Eloquent\Model;

class AiModelResource extends Resource
{
    protected static ?string $model = AiModel::class;

    protected static BackedEnum|string|null $navigationIcon = 'heroicon-o-cpu-chip';

    protected static ?int $navigationSort = -100;

    public static function getNavigationGroup(): ?string
    {
        return __('filament.navigation.groups.ai_models');
    }

    public static function getNavigationLabel(): string
    {
        return __('filament.navigation.ai_models');
    }

    public static function form(Schema $schema): Schema
    {
        return $schema
            ->components([
                Section::make(__('filament.resource.ai_model.parameters_help_title'))
                    ->description(__('filament.resource.ai_model.parameters_help_text'))
                    ->columns(1)
                    ->collapsible()
                    ->schema([]),
                TextInput::make('name')
                    ->label(__('filament.resource.ai_model.form.name'))
                    ->required(),
                Select::make('model_id')
                    ->label(__('filament.resource.ai_model.form.model_id'))
                    ->searchable()
                    ->required()
                    ->getSearchResultsUsing(function (string $search, callable $get): array {
                        $providerId = $get('api_provider_id');
                        if (! $providerId) {
                            return [];
                        }

                        $provider = ApiProvider::find($providerId);
                        if (! $provider || ! $provider->plugin) {
                            return [];
                        }

                        $plugin = PluginLoader::getPlugin($provider->plugin, $provider);
                        if (! method_exists($plugin, 'searchModels')) {
                            return [];
                        }

                        $results = $plugin->searchModels($search);

                        $options = [];
                        foreach ($results as $result) {
                            $id = $result['id'] ?? null;
                            $name = $result['name'] ?? $id;
                            if ($id) {
                                $options[$id] = $name ? $name.' ('.$id.')' : $id;
                            }
                        }

                        return $options;
                    })
                    ->getOptionLabelUsing(fn ($value): ?string => $value),
                TextInput::make('model_type')
                    ->label(__('filament.resource.ai_model.form.model_type'))
                    ->nullable(),
                Select::make('api_provider_id')
                    ->label(__('filament.resource.ai_model.form.api_provider'))
                    ->relationship('primaryApiProvider', 'name')
                    ->searchable()
                    ->preload()
                    ->required(),
                Toggle::make('enabled')
                    ->label(__('filament.resource.ai_model.form.enabled'))
                    ->default(true),
                Textarea::make('parameters')
                    ->label(__('filament.resource.ai_model.form.parameters'))
                    ->nullable()
                    ->rows(15),
            ]);
    }

    protected static function canSearchModelsWithAnyProvider(?array $apiProviderIds): bool
    {
        if (empty($apiProviderIds)) {
            return false;
        }

        foreach ($apiProviderIds as $apiProviderId) {
            $apiProvider = ApiProvider::find($apiProviderId);
            if (! $apiProvider || ! $apiProvider->plugin) {
                continue;
            }
            try {
                $pluginInstance = PluginLoader::getPlugin($apiProvider->plugin, $apiProvider);
                if (method_exists($pluginInstance, 'searchModels')) {
                    return true;
                }
            } catch (\Exception $e) {
                // Log the exception if needed
                continue;
            }
        }

        return false;
    }

    protected static function getPluginInstance(?int $apiProviderId): ?ApiPluginInterface
    {
        if (! $apiProviderId) {
            return null;
        }
        $apiProvider = ApiProvider::find($apiProviderId);
        if (! $apiProvider || ! $apiProvider->plugin) {
            return null;
        }
        try {
            return PluginLoader::getPlugin($apiProvider->plugin, $apiProvider);
        } catch (\Exception $e) {
            // Log the exception if needed
            return null;
        }
    }

    protected static function canSearchModels(?int $apiProviderId): bool
    {
        if (! $apiProviderId) {
            return false;
        }
        $apiProvider = ApiProvider::find($apiProviderId);
        if (! $apiProvider || ! $apiProvider->plugin) {
            return false;
        }
        try {
            $pluginInstance = PluginLoader::getPlugin($apiProvider->plugin, $apiProvider);

            return method_exists($pluginInstance, 'searchModels');
        } catch (\Exception $e) {
            // Log the exception if needed
            return false;
        }
    }

    public static function table(Table $table): Table
    {
        return $table
            ->columns([
                TextColumn::make('name')->searchable()->sortable(),
                TextColumn::make('model_id')->searchable()->sortable(),
                TextColumn::make('model_type')->searchable()->sortable(),
                IconColumn::make('enabled')
                    ->boolean(),
                TextColumn::make('primaryApiProvider.name')->searchable()->sortable()->limit(50),
            ])
            ->filters([
                //
            ])
            ->actions([
                EditAction::make(),
                Action::make('duplicate')
                    ->label(__('filament.resource.ai_model.action.duplicate'))
                    ->icon('heroicon-o-document-duplicate')
                    ->action(function (Model $record, $livewire) {
                        $livewire->redirect(static::getUrl('create', ['sourceRecord' => $record->id]));
                    }),
            ])
            ->bulkActions([
                BulkActionGroup::make([
                    DeleteBulkAction::make(),
                ]),
            ])
            ->emptyStateActions([
                CreateAction::make(),
            ]);
    }

    public static function getRelations(): array
    {
        return [
            //
        ];
    }

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