完成消费功能（不包括写卡）；修改充值函数，充值完成后输入金额框归零。
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221
consumePage.cpp
221
consumePage.cpp
@ -49,3 +49,224 @@ void MainWindow::on_consumeInventoryButton_clicked()
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ui->consumeCardIdBox->addItems(cardIdList);
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}
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}
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/**
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* @brief 消费
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* 该函数在用户点击“消费”按钮时触发，用于对指定卡片进行消费操作。
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* @param void
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* @return void
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* @details
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* 函数首先检查软件是否已准备好并且数据库已连接。如果数据库未连接，函数将显示警告信息并返回。
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* 接着，函数检查是否选择了卡片。如果未选择卡片，函数将显示警告信息并返回。
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* 然后，函数检查并获取绑定的用户信息。如果卡片不存在或已挂失或未启用，函数将显示相应的警告信息并返回。
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* 如果消费金额大于50元，函数会要求进行密码验证。如果验证失败，函数将显示警告信息并返回。
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* 在所有检查通过后，函数调用 `deductCard` 函数进行消费操作，并在操作成功后显示消费结果。
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* @author 柯劲帆
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* @date 2024-07-30
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*/
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void MainWindow::on_consumeButton_clicked()
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{
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if (!softwareReady())
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{
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QMessageBox::warning(this, QString("提示"), QString("数据库未连接，请设置。"));
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if (ui->stackedWidget->currentWidget() != ui->settingPage)
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{
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ui->stackedWidget->setCurrentWidget(ui->settingPage);
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}
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return;
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}
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if (ui->consumeCardIdBox->currentIndex() == -1)
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{
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QMessageBox::warning(this, "提示", "请放置卡片并点击查询按钮。");
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return;
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}
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QString cardId = ui->consumeCardIdBox->currentText();
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int userId;
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int cardStatus;
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double originalBalance;
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// 检查和获取绑定用户
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QSqlQuery query(db->getDatabase());
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query.prepare(QString("select userId, `status`, balance from card "
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"where id = :cardId;"));
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query.bindValue(":cardId", cardId);
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bool success = false;
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success = query.exec();
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if (!success)
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{
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QMessageBox::warning(this, QString("提示"), QString("数据库异常。消费失败。"));
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return;
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}
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if (query.next()) // 卡已被注册，获取用户ID
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{
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cardStatus = query.value("status").toInt();
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if (cardStatus == -1)
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{
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QMessageBox::warning(this, QString("提示"), QString("此卡已被挂失。消费失败。"));
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return;
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}
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if (cardStatus == 0)
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{
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QMessageBox::warning(this, QString("提示"), QString("此卡未被启用。消费失败。"));
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return;
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}
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userId = query.value("userId").toInt();
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originalBalance = query.value("balance").toDouble();
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}
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else // 卡没有注册
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{
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query.finish();
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query.prepare(QString("insert into card "
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"values (:cardId, 0, 0.0, null);"));
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query.bindValue(":cardId", cardId);
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success = query.exec();
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if (!success)
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{
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QMessageBox::warning(this, QString("提示"), QString("数据库异常。消费失败。"));
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return;
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}
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QMessageBox::warning(this, QString("提示"), QString("此卡未被启用。消费失败。"));
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return;
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}
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double deductValue = ui->consumeValueBox->value();
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if (!(deductValue > 0.00))
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{
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QMessageBox::warning(this, "提示", "请输入大于0.00的消费金额。");
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return;
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}
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if (originalBalance - deductValue < 0.00)
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{
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QMessageBox::warning(this, "提示", "余额不足。");
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return;
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}
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if (deductValue > 300.00)
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{
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QMessageBox::warning(this, "提示", "消费金额不得超过300.00元。");
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return;
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}
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if (deductValue > 50.00)
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{
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QString prompt = "消费超过50.00元，需要密码验证。";
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QString info;
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success = verifyUser(userId, prompt, info);
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if (!success)
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{
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QMessageBox::warning(this, "提示", info + QString("\n用户验证不通过。消费失败。"));
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return;
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}
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}
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QString info;
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double finalBalance;
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QString recordId;
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success = deductCard(cardId, deductValue, originalBalance, finalBalance, recordId, info);
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if (!success)
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{
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QMessageBox::warning(this, "提示", info + QString("\n消费失败。"));
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return;
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}
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QString consumeResultMessage = QString("消费成功：") + QString::number(deductValue) + QString("元\n");
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consumeResultMessage += QString("原余额：") + QString::number(originalBalance) + QString("元\n");
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consumeResultMessage += QString("消费后余额：") + QString::number(finalBalance) + QString("元\n");
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consumeResultMessage += QString("消费设备：") + device.getName() + QString("\n");
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consumeResultMessage += QString("交易记录号：") + recordId + QString("\n");
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QMessageBox::information(this, "消费成功", consumeResultMessage);
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ui->consumeValueBox->setValue(0.00);
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return;
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}
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/**
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* @brief 卡消费
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* 该函数用于对指定卡片进行消费操作。消费前会进行一系列检查，包括卡片状态、余额是否足够以及单次消费额是否超过上限等。
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* 如果所有检查通过，将调用存储过程 `sp_consumeCard` 进行消费操作，并返回消费后的余额。
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* @param cardId 要消费的卡号
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* @param deductValue 消费金额
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* @param originalBalance 消费前的余额，通过引用返回
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* @param finalBalance 消费后的余额，通过引用返回
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* @param recordId 交易记录号，通过引用返回
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* @param info 如果出现异常，填入异常信息，通过引用返回
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* @return bool 是否消费成功
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* - true 成功
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* - false 失败
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* @author 柯劲帆
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* @date 2024-07-30
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*/
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bool MainWindow::deductCard(QString cardId, double deductValue, double &originalBalance, double &finalBalance, QString &recordId, QString &info)
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{
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QSqlQuery query(db->getDatabase());
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bool success;
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query.prepare(QString("select userId, `status`, balance from card "
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"where id = :cardId;"));
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query.bindValue(":cardId", cardId);
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success = query.exec();
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if (!success)
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{
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info = "数据库异常。";
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return false;
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}
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if (!query.next())
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{
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info = "卡号不存在。";
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return false;
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}
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int cardStatus = query.value("status").toInt();
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if (cardStatus == -1)
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{
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info = "此卡已被挂失。";
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return false;
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}
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if (cardStatus == 0)
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{
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info = "此卡未被启用。";
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return false;
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}
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originalBalance = query.value("balance").toDouble();
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int userId = query.value("userId").toInt();
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if (originalBalance - deductValue < 0.00)
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{
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info = "余额不足。";
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return false;
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}
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if (deductValue > 300.00)
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{
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info = "单次消费额上限为300.00元。";
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return false;
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}
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QDateTime currentTime = QDateTime::currentDateTime();
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recordId = getRecordId(currentTime, userId, 1);
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query.finish();
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query.prepare(QString("call sp_consumeCard (:cardId, :value, :recordId, :device, :time, :type, @newBalance);"));
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query.bindValue(":cardId", cardId);
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query.bindValue(":value", deductValue);
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query.bindValue(":recordId", recordId);
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query.bindValue(":device", device.getId());
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query.bindValue(":time", currentTime.toString("yyyy-MM-dd hh:mm:ss"));
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query.bindValue(":type", 1);
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success = query.exec();
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if (!success)
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{
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info = "数据库异常。";
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return false;
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}
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query.exec("select @newBalance;");
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query.next();
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finalBalance = query.value("@newBalance").toDouble();
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/// @todo 写卡
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return true;
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}
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@ -207,6 +207,7 @@ void MainWindow::on_depositByUserIdButton_clicked()
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depositResultMessage += QString("充值设备：") + device.getName() + QString("\n");
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depositResultMessage += QString("交易记录号：") + recordId + QString("\n");
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QMessageBox::information(this, "充值成功", depositResultMessage);
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ui->depositValueBox->setValue(0.00);
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return;
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}
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@ -63,3 +63,4 @@ MainWindow::~MainWindow()
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{
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delete ui;
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}
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@ -40,6 +40,7 @@ public:
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bool reopenCard(QString cardId, QString &info);
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bool topUpCard(QString cardId, double topUpValue, double &originalBalance, double &finalBalance, QString &recordId, QString &info);
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QString getRecordId(QDateTime currentTime, int userId, int recordType);
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bool deductCard(QString cardId, double deductValue, double &originalBalance, double &finalBalance, QString &recordId, QString &info);
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private slots:
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void on_settingAction_triggered();
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@ -47,6 +48,7 @@ private slots:
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void on_NewCardAction_triggered();
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void on_reportLossAction_triggered();
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void on_depositAction_triggered();
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void on_ConsumptionAction_triggered();
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void on_connectReaderButton_clicked();
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void on_confirmQuitButton_clicked();
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@ -56,12 +58,9 @@ private slots:
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void on_reportLossButton_clicked();
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void on_depositInventoryButton_clicked();
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void on_depositByCardIdButton_clicked();
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void on_depositByUserIdButton_clicked();
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void on_consumeInventoryButton_clicked();
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void on_ConsumptionAction_triggered();
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void on_consumeButton_clicked();
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private:
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Ui::MainWindow *ui;
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