<?php

declare(strict_types=1);

namespace App\Http\Controllers\Site;

use App\Http\Controllers\Controller;
use App\Models\AiModel;
use App\Models\Article;
use Illuminate\Contracts\View\View;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Http\Request;

class ModelController extends Controller
{
    public function index(Request $request): View
    {
        $builder = AiModel::query()->published()->with('category');

        if ($request->filled('q')) {
            $builder->whereFullText(['name', 'summary', 'description'], (string) $request->string('q'));
        }

        if ($request->filled('modality')) {
            $builder->where('modality', (string) $request->string('modality'));
        }

        if ($request->filled('deployment')) {
            $builder->where('deployment_mode', (string) $request->string('deployment'));
        }

        $modalityCounts = AiModel::query()
            ->published()
            ->selectRaw('modality, COUNT(*) as aggregate')
            ->groupBy('modality')
            ->pluck('aggregate', 'modality');

        $modalityOptions = [
            ['value' => 'text', 'label' => '文本', 'count' => (int) ($modalityCounts['text'] ?? 0)],
            ['value' => 'multimodal', 'label' => '多模态', 'count' => (int) ($modalityCounts['multimodal'] ?? 0)],
            ['value' => 'image', 'label' => '图像', 'count' => (int) ($modalityCounts['image'] ?? 0)],
            ['value' => 'audio', 'label' => '音频', 'count' => (int) ($modalityCounts['audio'] ?? 0)],
        ];

        $modelStats = [
            'total' => AiModel::query()->published()->count(),
            'multimodal' => AiModel::query()->published()->where('modality', 'multimodal')->count(),
            'api' => AiModel::query()->published()->where('deployment_mode', 'api')->count(),
            'updated_7d' => AiModel::query()->published()->where('updated_at', '>=', now()->subDays(7))->count(),
        ];

        return view('public.models.index', [
            'items' => $builder->orderByDesc('total_score')->paginate(18)->withQueryString(),
            'modalityOptions' => $modalityOptions,
            'modelStats' => $modelStats,
            'filters' => $request->only(['q', 'modality', 'deployment']),
            'sidebarTools' => \App\Models\Tool::published()->latest('published_at')->limit(6)->get(),
            'sidebarNews' => Article::published()->latest('published_at')->limit(6)->get(),
        ]);
    }

    public function byUseCase(string $slug, Request $request): View
    {
        $request->merge(['modality' => $slug]);

        return $this->index($request);
    }

    public function show(string $slug): View
    {
        /** @var AiModel $model */
        $model = AiModel::query()
            ->published()
            ->with(['category', 'source', 'alternative'])
            ->where('slug', $slug)
            ->firstOrFail();

        $relatedModels = AiModel::query()
            ->published()
            ->whereKeyNot($model->id)
            ->when($model->modality !== null, fn (Builder $query): Builder => $query->where('modality', $model->modality))
            ->orderByDesc('total_score')
            ->limit(6)
            ->get();

        return view('public.models.show', [
            'item' => $model,
            'relatedModels' => $relatedModels,
            'showRiskNotice' => $this->containsRiskKeyword($model->summary.' '.$model->description),
        ]);
    }

    private function containsRiskKeyword(string $text): bool
    {
        return str_contains($text, '医疗') || str_contains($text, '法律') || str_contains($text, '投资');
    }
}