<?php

namespace Modules\Licensing\Http\Controllers\Portal;

use App\Http\Controllers\Controller;
use Modules\Licensing\Models\License;
use Modules\Licensing\Models\LicenseDeliveryOutbox;
use Modules\Licensing\Models\LicenseProduct;
use Modules\Paddle\Services\PaddleClient;
use Modules\Licensing\Services\LicenseDeliveryService;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use RuntimeException;

final class PortalController extends Controller
{
    public function __construct(private PaddleClient $paddle, private LicenseDeliveryService $delivery) {}

    private function owned(Request $request)
    {
        return License::with(['product', 'activations'])
            ->whereRaw('lower(customer_email) = ?', [strtolower($request->user()->email)]);
    }

    public function index(Request $request)
    {
        $licenses = $this->owned($request)->latest()->get();
        $hasProfessional = $licenses->contains(fn (License $license) => $license->is_usable && $license->edition === 'Professional');

        return view('portal.index', compact('licenses', 'hasProfessional'));
    }

    public function show(Request $request, License $license)
    {
        $this->authorise($request, $license);
        $license->load(['product', 'activations']);

        return view('portal.show', compact('license'));
    }

    public function upgrade(Request $request, License $license): RedirectResponse
    {
        $this->authorise($request, $license);
        abort_unless($license->payment_provider === 'paddle' && $license->external_subscription_id, 422);
        abort_unless($license->edition === 'Personal' && $license->is_usable, 422);

        $targetPriceID = $this->professionalPriceFor($license);
        $targetProduct = LicenseProduct::query()
            ->where('payment_provider', 'paddle')
            ->where('external_price_id', $targetPriceID)
            ->where('active', true)
            ->firstOrFail();

        try {
            $subscription = $this->paddle->updateSubscriptionPrice($license->external_subscription_id, $targetPriceID);
        } catch (RuntimeException $exception) {
            return back()->withErrors(['licence' => $exception->getMessage()]);
        }

        // Apply the entitlement immediately. Paddle webhooks remain authoritative and
        // will reconcile subscription status/current-period details afterwards.
        $license->update([
            'license_product_id' => $targetProduct->id,
            'edition' => $targetProduct->edition,
            'activation_limit' => $targetProduct->activation_limit,
            'max_major_version' => $targetProduct->max_major_version,
            'external_price_id' => $targetPriceID,
            'subscription_status' => (string) ($subscription['status'] ?? $license->subscription_status),
            'revoked_at' => null,
            'revoke_reason' => null,
        ]);

        return redirect()->route('portal.show', $license)->with('status', 'Upgraded to Professional. Your existing Paddle subscription was changed; no second subscription was created.');
    }

    public function cancel(Request $request, License $license): RedirectResponse
    {
        $this->authorise($request, $license);
        abort_unless($license->payment_provider === 'paddle' && $license->external_subscription_id, 422);
        abort_unless(! in_array($license->subscription_status, ['canceled'], true), 422);

        try {
            $this->paddle->cancelSubscriptionImmediately($license->external_subscription_id);
        } catch (RuntimeException $exception) {
            return back()->withErrors(['licence' => $exception->getMessage()]);
        }

        $license->update([
            'subscription_status' => 'canceled',
            'expires_at' => now(),
            'revoked_at' => now(),
            'revoke_reason' => 'Subscription canceled from licence portal',
            'cancel_scheduled_at' => null,
        ]);

        return redirect()->route('portal.index')->with('status', 'Subscription canceled in Paddle and the licence is no longer active.');
    }

    public function deactivate(Request $request, License $license, int $activation)
    {
        $this->authorise($request, $license);
        $item = $license->activations()->whereKey($activation)->firstOrFail();
        if (! $item->deactivated_at) {
            $item->update(['deactivated_at' => now()]);
        }

        return back()->with('status', 'Mac deactivated. SonarDesk will detect this through the licensing API.');
    }

    public function resend(Request $request, License $license)
    {
        $this->authorise($request, $license);
        $out = LicenseDeliveryOutbox::where('license_id', $license->id)->first();
        if (! $out) {
            return back()->withErrors(['licence' => 'This licence was issued manually and its full key is not recoverable. Contact support.']);
        }

        $out->update([
            'recipient_email' => strtolower($request->user()->email),
            'delivered_at' => null,
        ]);
        $this->delivery->deliverPending(1);

        return back()->with('status', 'Licence key sent to your verified email address.');
    }

    private function authorise(Request $request, License $license): void
    {
        abort_unless(strtolower((string) $license->customer_email) === strtolower($request->user()->email), 404);
    }

    private function professionalPriceFor(License $license): string
    {
        $paddle = config('paddle');
        $current = (string) $license->external_price_id;

        if ($current === (string) ($paddle['personal_annual_price_id'] ?? '')) {
            return (string) ($paddle['professional_annual_price_id'] ?? '');
        }

        return (string) ($paddle['professional_monthly_price_id'] ?? '');
    }
}