<?php

declare(strict_types=1);

namespace App\Http\Controllers\Admin;

use App\Enums\EntityStatus;
use App\Http\Controllers\Controller;
use App\Http\Requests\Admin\AiModelRequest;
use App\Models\AiModel;
use App\Models\Category;
use App\Models\Source;
use App\Services\ChangeLogService;
use App\Services\ModelScoringService;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\View\View;

class AiModelController extends Controller
{
    public function __construct(
        private readonly ChangeLogService $changeLogService,
        private readonly ModelScoringService $modelScoringService,
    ) {
    }

    public function index(Request $request): View
    {
        $items = AiModel::query()
            ->with(['category', 'source'])
            ->when($request->filled('q'), function ($query) use ($request): void {
                $query->whereFullText(['name', 'summary', 'description'], (string) $request->string('q'));
            })
            ->latest('updated_at')
            ->paginate(20)
            ->withQueryString();

        return view('admin.models.index', [
            'items' => $items,
            'filters' => $request->only(['q']),
        ]);
    }

    public function create(): View
    {
        return view('admin.models.form', [
            'item' => new AiModel(),
            'categories' => Category::query()->where('type', 'model')->orderBy('name')->get(),
            'sources' => Source::query()->where('is_whitelisted', true)->orderBy('name')->get(),
            'statusOptions' => EntityStatus::cases(),
            'submitRoute' => route('admin.models.store'),
            'method' => 'POST',
        ]);
    }

    public function store(AiModelRequest $request): RedirectResponse
    {
        $item = new AiModel($this->normalizePayload($request->validated()));
        $this->modelScoringService->apply($item);
        $item->save();

        $this->changeLogService->log('created', $item);

        return redirect()->route('admin.models.edit', $item)->with('status', '模型已创建');
    }

    public function edit(AiModel $model): View
    {
        return view('admin.models.form', [
            'item' => $model,
            'categories' => Category::query()->where('type', 'model')->orderBy('name')->get(),
            'sources' => Source::query()->where('is_whitelisted', true)->orderBy('name')->get(),
            'statusOptions' => EntityStatus::cases(),
            'submitRoute' => route('admin.models.update', $model),
            'method' => 'PUT',
        ]);
    }

    public function update(AiModelRequest $request, AiModel $model): RedirectResponse
    {
        $before = $model->getAttributes();
        $model->fill($this->normalizePayload($request->validated()));
        $this->modelScoringService->apply($model);
        $model->save();

        $this->changeLogService->log('updated', $model, $before);

        return redirect()->route('admin.models.edit', $model)->with('status', '模型已更新');
    }

    public function publish(AiModel $model): RedirectResponse
    {
        $before = $model->getAttributes();
        $model->status = EntityStatus::Published;
        $model->published_at = $model->published_at ?? now();
        $model->save();

        $this->changeLogService->log('published', $model, $before);

        return redirect()->route('admin.models.edit', $model)->with('status', '模型已发布');
    }

    public function markStale(AiModel $model): RedirectResponse
    {
        $before = $model->getAttributes();
        $model->is_stale = true;
        $model->status = EntityStatus::Stale;
        $model->save();

        $this->changeLogService->log('marked_stale', $model, $before);

        return redirect()->route('admin.models.edit', $model)->with('status', '模型已标记失效');
    }

    private function normalizePayload(array $data): array
    {
        $data['is_stale'] = (bool) ($data['is_stale'] ?? false);

        if (($data['status'] ?? null) === EntityStatus::Published->value && empty($data['published_at'])) {
            $data['published_at'] = now();
        }

        return $data;
    }
}