<?php

namespace App\Http\Controllers;

use App\Services\Billing\BillingClient;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;

/**
 * In-app wallet top-up. Posts to the central identity API to start a Paystack
 * checkout against the one Ladill wallet, then hands the user to checkout. This
 * backs the two-step "Add funds" modal so users never leave for the wallet page
 * when they hit an insufficient-balance action.
 */
class WalletTopupController extends Controller
{
    public function store(Request $request, BillingClient $billing): JsonResponse|RedirectResponse
    {
        $validated = $request->validate([
            'amount' => ['required', 'numeric', 'min:5', 'max:5000'],
            'return_url' => ['nullable', 'url', 'max:2048'],
        ]);

        $returnUrl = $validated['return_url'] ?? (string) (url()->previous() ?: url('/'));

        try {
            $checkoutUrl = $billing->topup(
                (string) $request->user()->public_id,
                (float) $validated['amount'],
                $returnUrl,
            );
        } catch (\Throwable) {
            $checkoutUrl = '';
        }

        if ($checkoutUrl === '') {
            if ($request->expectsJson()) {
                return response()->json(['error' => 'Unable to start payment. Please try again.'], 422);
            }

            return back()->with('error', 'Unable to start payment. Please try again.');
        }

        if ($request->expectsJson()) {
            return response()->json(['checkout_url' => $checkoutUrl]);
        }

        return redirect()->away($checkoutUrl);
    }
}