<?php

namespace App\Http\Controllers\Woo;

use App\Http\Controllers\Controller;
use App\Http\Controllers\Woo\Concerns\ResolvesWooContext;
use App\Models\WooStore;
use App\Services\Woo\InstallTokenService;
use App\Services\Woo\SubscriptionService;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use App\Support\CurrentWooStore;
use Illuminate\View\View;

class ConnectWordPressController extends Controller
{
    use ResolvesWooContext;

    public function __construct(
        private InstallTokenService $tokens,
        private SubscriptionService $subscriptions,
    ) {}

    public function start(Request $request): RedirectResponse|View
    {
        abort_if($this->wooMember($request), 403);

        $validated = $request->validate([
            'site_url' => ['required', 'url', 'max:500'],
            'return_url' => ['required', 'url', 'max:2048'],
            'site_name' => ['nullable', 'string', 'max:160'],
        ]);

        $siteUrl = $this->normalizeSiteUrl($validated['site_url']);
        if (! $this->isAllowedReturnUrl($validated['return_url'], $siteUrl)) {
            abort(422, 'Return URL must belong to the WooCommerce site.');
        }

        $request->session()->put('woo.connect', [
            'site_url' => $siteUrl,
            'return_url' => $validated['return_url'],
            'site_name' => $validated['site_name'] ?? null,
        ]);

        if (! $request->user()) {
            return redirect()->route('sso.connect', [
                'redirect' => $request->fullUrl(),
                'interactive' => 1,
            ]);
        }

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

    public function complete(Request $request): RedirectResponse|View
    {
        abort_if($this->wooMember($request), 403);

        $pending = (array) $request->session()->pull('woo.connect', []);
        if ($pending === []) {
            return redirect()->route('woo.dashboard');
        }

        $user = $this->accountUser($request);
        abort_if(! $user, 401);

        $siteUrl = (string) ($pending['site_url'] ?? '');
        $returnUrl = (string) ($pending['return_url'] ?? '');

        if (! $this->subscriptions->canConnectStore($user, $siteUrl)) {
            return redirect()->route('woo.pro.index')
                ->with('upsell', 'Free plan includes '.(int) config('woo.free.max_stores', 1).' store. Upgrade to Pro to connect more WooCommerce sites.');
        }

        $store = WooStore::query()->updateOrCreate(
            [
                'user_id' => $user->id,
                'site_url' => $siteUrl,
            ],
            [
                'site_name' => $pending['site_name'] ?? parse_url($siteUrl, PHP_URL_HOST),
                'return_url' => $returnUrl,
                'status' => WooStore::STATUS_PENDING,
            ],
        );

        $issued = $this->tokens->issue($store);
        $separator = str_contains($returnUrl, '?') ? '&' : '?';

        session([CurrentWooStore::SESSION_KEY => $store->id]);

        return redirect()->away($returnUrl.$separator.http_build_query([
            'ladill_connect' => '1',
            'install_token' => $issued['token'],
            'store_id' => $store->public_id,
        ]));
    }

    private function normalizeSiteUrl(string $url): string
    {
        $parsed = parse_url($url);
        $scheme = $parsed['scheme'] ?? 'https';
        $host = strtolower((string) ($parsed['host'] ?? ''));

        return rtrim($scheme.'://'.$host, '/');
    }

    private function isAllowedReturnUrl(string $returnUrl, string $siteUrl): bool
    {
        $returnHost = strtolower((string) (parse_url($returnUrl, PHP_URL_HOST) ?: ''));
        $siteHost = strtolower((string) (parse_url($siteUrl, PHP_URL_HOST) ?: ''));

        return $returnHost !== '' && $returnHost === $siteHost;
    }
}