<?php

namespace App\Filament\Resources;

use App\Enums\PredictionSource;
use App\Enums\TrendDirection;
use App\Filament\NavigationGroup;
use App\Filament\Resources\OilPredictionResource\Pages\ListOilPredictions;
use App\Filament\Resources\OilPredictionResource\Pages\ViewOilPrediction;
use App\Models\PricePrediction;
use Filament\Actions\ViewAction;
use Filament\Forms\Components\DatePicker;
use Filament\Infolists\Components\TextEntry;
use Filament\Resources\Resource;
use Filament\Schemas\Components\Section;
use Filament\Schemas\Schema;
use Filament\Tables\Columns\TextColumn;
use Filament\Tables\Filters\Filter;
use Filament\Tables\Filters\SelectFilter;
use Filament\Tables\Table;
use Illuminate\Database\Eloquent\Builder;

class OilPredictionResource extends Resource
{
    protected static ?string $model = PricePrediction::class;

    protected static string|\UnitEnum|null $navigationGroup = NavigationGroup::Data;

    protected static ?string $navigationLabel = 'Oil Predictions';

    protected static ?int $navigationSort = 3;

    public static function table(Table $table): Table
    {
        return $table
            ->columns([
                TextColumn::make('predicted_for')
                    ->date('d M Y')
                    ->sortable(),
                TextColumn::make('source')
                    ->badge()
                    ->formatStateUsing(fn (PredictionSource $state) => match ($state) {
                        PredictionSource::Llm => 'LLM',
                        PredictionSource::LlmWithContext => 'LLM + Context',
                        PredictionSource::Ewma => 'EWMA',
                    })
                    ->color(fn (PredictionSource $state) => match ($state) {
                        PredictionSource::Llm => 'success',
                        PredictionSource::LlmWithContext => 'warning',
                        PredictionSource::Ewma => 'info',
                    }),
                TextColumn::make('direction')
                    ->badge()
                    ->color(fn (TrendDirection $state) => match ($state) {
                        TrendDirection::Rising => 'danger',
                        TrendDirection::Falling => 'success',
                        TrendDirection::Flat => 'gray',
                    }),
                TextColumn::make('confidence')
                    ->suffix('%')
                    ->sortable(),
                TextColumn::make('reasoning')
                    ->limit(60)
                    ->placeholder('—'),
                TextColumn::make('generated_at')
                    ->dateTime('d M Y H:i')
                    ->sortable(),
            ])
            ->defaultSort('predicted_for', 'desc')
            ->filters([
                SelectFilter::make('source')
                    ->options([
                        PredictionSource::Llm->value => 'LLM',
                        PredictionSource::LlmWithContext->value => 'LLM + Context',
                        PredictionSource::Ewma->value => 'EWMA',
                    ]),
                SelectFilter::make('direction')
                    ->options([
                        TrendDirection::Rising->value => 'Rising',
                        TrendDirection::Falling->value => 'Falling',
                        TrendDirection::Flat->value => 'Flat',
                    ]),
                Filter::make('predicted_for')
                    ->schema([
                        DatePicker::make('from')->label('From'),
                        DatePicker::make('until')->label('Until'),
                    ])
                    ->query(function (Builder $query, array $data) {
                        $query
                            ->when($data['from'], fn ($q, $d) => $q->whereDate('predicted_for', '>=', $d))
                            ->when($data['until'], fn ($q, $d) => $q->whereDate('predicted_for', '<=', $d));
                    }),
            ])
            ->recordActions([
                ViewAction::make(),
            ]);
    }

    public static function infolist(Schema $schema): Schema
    {
        return $schema->components([
            Section::make('Prediction')->schema([
                TextEntry::make('predicted_for')->date('d M Y'),
                TextEntry::make('source')
                    ->badge()
                    ->formatStateUsing(fn (PredictionSource $state) => match ($state) {
                        PredictionSource::Llm => 'LLM',
                        PredictionSource::LlmWithContext => 'LLM + Context',
                        PredictionSource::Ewma => 'EWMA',
                    })
                    ->color(fn (PredictionSource $state) => match ($state) {
                        PredictionSource::Llm => 'success',
                        PredictionSource::LlmWithContext => 'warning',
                        PredictionSource::Ewma => 'info',
                    }),
                TextEntry::make('direction')
                    ->badge()
                    ->color(fn (TrendDirection $state) => match ($state) {
                        TrendDirection::Rising => 'danger',
                        TrendDirection::Falling => 'success',
                        TrendDirection::Flat => 'gray',
                    }),
                TextEntry::make('confidence')->suffix('%'),
                TextEntry::make('generated_at')->dateTime('d M Y H:i:s'),
            ])->columns(3),
            Section::make('Reasoning')->schema([
                TextEntry::make('reasoning')
                    ->columnSpanFull()
                    ->placeholder('No reasoning recorded'),
            ]),
        ]);
    }

    public static function getPages(): array
    {
        return [
            'index' => ListOilPredictions::route('/'),
            'view' => ViewOilPrediction::route('/{record}'),
        ];
    }
}
