App\Http\Controllers\NinjaController::claim_license PHP Method

    public function claim_license()
    {
        $licenseKey = Input::get('license_key');
        $productId = Input::get('product_id', PRODUCT_ONE_CLICK_INSTALL);
        $license = License::where('license_key', '=', $licenseKey)->where('is_claimed', '<', 10)->where('product_id', '=', $productId)->first();
        if ($license) {
            if ($license->transaction_reference != 'TEST_MODE') {
                $license->is_claimed = $license->is_claimed + 1;
                $license->save();
            }
            if ($productId == PRODUCT_INVOICE_DESIGNS) {
                return file_get_contents(storage_path() . '/invoice_designs.txt');
            } else {
                // temporary fix to enable previous version to work
                if (Input::get('get_date')) {
                    return $license->created_at->format('Y-m-d');
                } else {
                    return 'valid';
                }
            }
        } else {
            return RESULT_FAILURE;
        }
    }