<?php

namespace App\Http\Controllers\Woo;

use App\Http\Controllers\Controller;
use App\Models\WooCategory;
use App\Models\WooStore;
use App\Services\Woo\CatalogSyncService;
use App\Services\Woo\CatalogWriteService;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\View\View;

class CategoryController extends Controller
{
    public function __construct(
        private CatalogWriteService $write,
        private CatalogSyncService $sync,
    ) {}

    public function index(Request $request): View
    {
        $user = $request->user();
        $storeFilter = $request->query('store');
        $search = trim((string) $request->query('q', ''));

        $storeIds = WooStore::query()->where('user_id', $user->id)->pluck('id');

        $categories = WooCategory::query()
            ->whereIn('woo_store_id', $storeIds)
            ->when($storeFilter, fn ($q) => $q->where('woo_store_id', $storeFilter))
            ->when($search !== '', fn ($q) => $q->where('name', 'like', '%'.$search.'%'))
            ->with('store')
            ->orderBy('name')
            ->paginate(30)
            ->withQueryString();

        $stores = WooStore::query()->where('user_id', $user->id)->orderBy('site_name')->get();

        return view('woo.categories.index', compact('categories', 'stores', 'storeFilter', 'search'));
    }

    public function create(Request $request): View
    {
        $stores = $this->activeStores($request);
        $storeId = (int) $request->query('store', $stores->first()?->id ?? 0);
        $parentCategories = $storeId > 0
            ? WooCategory::query()->where('woo_store_id', $storeId)->orderBy('name')->get()
            : collect();

        return view('woo.categories.form', [
            'category' => new WooCategory,
            'stores' => $stores,
            'parentCategories' => $parentCategories,
            'selectedStoreId' => $storeId,
        ]);
    }

    public function store(Request $request): RedirectResponse
    {
        $validated = $this->validateCategory($request);
        $store = $this->authorizedStore($request, (int) $validated['woo_store_id']);

        $this->write->createCategory($store, $validated);

        return redirect()->route('woo.categories.index', ['store' => $store->id])
            ->with('success', 'Category saved.');
    }

    public function edit(Request $request, WooCategory $category): View
    {
        $category->load('store');
        abort_if($category->store?->user_id !== $request->user()->id, 403);

        $stores = $this->activeStores($request);
        $parentCategories = $category->store
            ? $category->store->categories()
                ->where('external_id', '!=', $category->external_id)
                ->orderBy('name')
                ->get()
            : collect();

        return view('woo.categories.form', [
            'category' => $category,
            'stores' => $stores,
            'parentCategories' => $parentCategories,
            'selectedStoreId' => $category->woo_store_id,
        ]);
    }

    public function update(Request $request, WooCategory $category): RedirectResponse
    {
        $category->load('store');
        abort_if($category->store?->user_id !== $request->user()->id, 403);

        $validated = $this->validateCategory($request);
        $this->write->updateCategory($category, $validated);

        return redirect()->route('woo.categories.index', ['store' => $category->woo_store_id])
            ->with('success', 'Category updated.');
    }

    public function destroy(Request $request, WooCategory $category): RedirectResponse
    {
        $category->load('store');
        abort_if($category->store?->user_id !== $request->user()->id, 403);

        $storeId = $category->woo_store_id;
        $this->write->deleteCategory($category);

        return redirect()->route('woo.categories.index', ['store' => $storeId])
            ->with('success', 'Category removed.');
    }

    public function sync(Request $request): RedirectResponse
    {
        $validated = $request->validate([
            'store' => ['required', 'integer'],
        ]);

        $store = $this->authorizedStore($request, (int) $validated['store']);
        $count = $this->sync->syncCategories($store);

        return back()->with('success', sprintf(
            'Synced %d categories from %s.',
            $count,
            $store->site_name ?? $store->site_url,
        ));
    }

    /** @return array<string, mixed> */
    private function validateCategory(Request $request): array
    {
        return $request->validate([
            'woo_store_id' => ['required', 'integer'],
            'name' => ['required', 'string', 'max:255'],
            'slug' => ['nullable', 'string', 'max:255'],
            'description' => ['nullable', 'string', 'max:10000'],
            'parent_external_id' => ['nullable', 'integer', 'min:0'],
        ]);
    }

    private function authorizedStore(Request $request, int $storeId): WooStore
    {
        return WooStore::query()
            ->where('user_id', $request->user()->id)
            ->whereKey($storeId)
            ->where('status', WooStore::STATUS_ACTIVE)
            ->firstOrFail();
    }

    /** @return \Illuminate\Support\Collection<int, WooStore> */
    private function activeStores(Request $request)
    {
        return WooStore::query()
            ->where('user_id', $request->user()->id)
            ->where('status', WooStore::STATUS_ACTIVE)
            ->orderBy('site_name')
            ->get();
    }
}