<?php

declare(strict_types=1);

namespace App\Http\Controllers\Admin;

use App\Enums\EntityStatus;
use App\Http\Controllers\Controller;
use App\Http\Requests\Admin\GuideRequest;
use App\Models\Category;
use App\Models\Guide;
use App\Services\ChangeLogService;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\View\View;

class GuideController extends Controller
{
    public function __construct(private readonly ChangeLogService $changeLogService)
    {
    }

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

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

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

    public function store(GuideRequest $request): RedirectResponse
    {
        $item = Guide::query()->create($this->normalizePayload($request->validated()));

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

        return redirect()->route('admin.guides.edit', $item)->with('status', '教程已创建');
    }

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

    public function update(GuideRequest $request, Guide $guide): RedirectResponse
    {
        $before = $guide->getAttributes();
        $guide->fill($this->normalizePayload($request->validated()));
        $guide->save();

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

        return redirect()->route('admin.guides.edit', $guide)->with('status', '教程已更新');
    }

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

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

        return redirect()->route('admin.guides.edit', $guide)->with('status', '教程已发布');
    }

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

        return $data;
    }
}