设备管理系统

设备管理系统

#include <iostream>
#include <fstream>
#include <vector>
#include <string>

using namespace std;

class Device {
public:
    string deviceNumber;
    string deviceName;
    string user;
    string department;
    int quantity;
    string purchaseDate;
    double price;

    Device() {} // 默认构造函数

    // 构造函数
    Device(string number, string name, string u, string dept, int qty, string date, double p)
        : deviceNumber(number), deviceName(name), user(u), department(dept), quantity(qty), purchaseDate(date), price(p) {}

    // 显示设备信息
    void display() {
        cout << "设备号: " << deviceNumber << endl;
        cout << "设备名称: " << deviceName << endl;
        cout << "领用人: " << user << endl;
        cout << "所属部门: " << department << endl;
        cout << "数量: " << quantity << endl;
        cout << "购买时间: " << purchaseDate << endl;
        cout << "价格: " << price << endl;
    }

    // 获取设备价格
    double getPrice() {
        return price;
    }

    // 获取设备所属部门
    string getDepartment() {
        return department;
    }
};

class DeviceManagementSystem
{
    vector<Device> devices;

public:
    // 添加设备信息
    void addDevice(Device device) {
        devices.push_back(device);
    }

    // 显示所有设备信息
    void displayDevices() {
        for (Device device : devices) {
            device.display();
            cout << endl;
        }
    }

    // 修改设备信息
    void modifyDevice(string number, string newName, string newUser, string newDept, int newQty, string newDate, double newPrice) {
        for (Device& device : devices) {
            if (device.deviceNumber == number) {
                device.deviceName = newName;
                device.user = newUser;
                device.department = newDept;
                device.quantity = newQty;
                device.purchaseDate = newDate;
                device.price = newPrice;
                break;
            }
        }
    }

    // 删除设备信息
    void deleteDevice(string number) {
        for (auto iter = devices.begin(); iter != devices.end(); ++iter) {
            if (iter->deviceNumber == number) {
                devices.erase(iter);
                break;
            }
        }
    }

    // 计算设备总金额
    double calculateTotalValue() {
        double totalValue = 0.0;
        for (Device device : devices) {
            totalValue += device.getPrice() * device.quantity;
        }
        return totalValue;
    }

    // 按设备种类进行分类统计
    void groupByDeviceName() {
        // TODO: 实现按设备种类进行分类统计
    }

    // 按所属部门进行分类统计
    void groupByDepartment() {
        // TODO: 实现按所属部门进行分类统计
    }

    // 将设备信息保存到文件
    void saveToFile(string filename) {
        ofstream outfile(filename);
        if (outfile.is_open()) {
            for (Device device : devices) {
                outfile << device.deviceNumber << "," << device.deviceName << "," << device.user << ","
                    << device.department << "," << device.quantity << "," << device.purchaseDate << ","
                    << device.price << endl;
            }
            outfile.close();
        }
        else {
            cout << "无法打开文件" << filename << "进行保存" << endl;
        }
    }

    // 从文件中加载设备信息
    void loadFromFile(string filename) {
        ifstream file(filename);
        if (file.is_open()) {
            devices.clear();

            string line;
            while (getline(file, line)) {
                Device device;
                size_t pos = 0;
                string token;

                // 按逗号分隔读取设备信息
                while ((pos = line.find(',')) != string::npos) {
                    token = line.substr(0, pos);
                    line.erase(0, pos + 1);

                    // 根据数据顺序填充设备对象
                    if (device.deviceNumber.empty()) {
                        device.deviceNumber = token;
                    }
                    else if (device.deviceName.empty()) {
                        device.deviceName = token;
                    }
                    else if (device.user.empty()) {
                        device.user = token;
                    }
                    else if (device.department.empty()) {
                        device.department = token;
                    }
                    else if (device.quantity == 0) {
                        device.quantity = stoi(token);
                    }
                    else if (device.purchaseDate.empty()) {
                        device.purchaseDate = token;
                    }
                    else if (device.price == 0.0) {
                        device.price = stod(token);
                    }
                }

                devices.push_back(device);
            }

            file.close();
            cout << "设备信息已从文件加载。" << endl;
        }
        else {
            cout << "无法打开文件。" << endl;
        }
    }
};

int main() {
    DeviceManagementSystem dms;
    dms.loadFromFile("devices.txt"); // 从文件中加载设备信息

    int choice;
    do {
        cout << "人机对话界面：" << endl;
        cout << "请选择操作：" << endl;
        cout << "1. 添加设备信息" << endl;
        cout << "2. 显示设备信息" << endl;
        cout << "3. 修改设备信息" << endl;
        cout << "4. 删除设备信息" << endl;
        cout << "5. 计算设备总金额" << endl;
        cout << "6. 按照设备种类进行分类" << endl;
        cout << "7. 按照设备所属部门进行分类" << endl;
        cout << "0. 退出系统" << endl;
        cout << "请输入选项：";
        cin >> choice;

        switch (choice) {
        case 1: {
            string number, name, user, dept, date;
            int quantity;
            double price;
            cout << "请输入设备号：";
            cin >> number;
            cout << "请输入设备名称：";
            cin >> name;
            cout << "请输入领用人：";
            cin >> user;
            cout << "请输入所属部门：";
            cin >> dept;
            cout << "请输入数量：";
            cin >> quantity;
            cout << "请输入购买时间：";
            cin >> date;
            cout << "请输入价格：";
            cin >> price;
            dms.addDevice(Device(number, name, user, dept, quantity, date, price));
            cout << "设备信息已添加" << endl;
            break;
        }
        case 2:
            dms.displayDevices();
            break;
        case 3: {
            string number, newName, newUser, newDept, newDate;
            int newQty;
            double newPrice;
            cout << "请输入要修改的设备号：";
            cin >> number;
            cout << "请输入新的设备名称：";
            cin >> newName;
            cout << "请输入新的领用人：";
            cin >> newUser;
            cout << "请输入新的所属部门：";
            cin >> newDept;
            cout << "请输入新的数量：";
            cin >> newQty;
            cout << "请输入新的购买时间：";
            cin >> newDate;
            cout << "请输入新的价格：";
            cin >> newPrice;
            dms.modifyDevice(number, newName, newUser, newDept, newQty, newDate, newPrice);
            cout << "设备信息已修改" << endl;
            break;
        }
        case 4: {
            string number;
            cout << "请输入要删除的设备号：";
            cin >> number;
            dms.deleteDevice(number);
            cout << "设备信息已删除" << endl;
            break;
        }
        case 5:
            cout << "设备总金额为：" << dms.calculateTotalValue() << endl;
            break;
        case 6:
            dms.groupByDeviceName();
            break;
        case 7:
            dms.groupByDepartment();
            break;
        case 0:
            dms.saveToFile("devices.txt"); // 将设备信息保存到文件
            cout << "谢谢使用，再见！" << endl;
            break;
        default:
            cout << "无效选项，请重新输入" << endl;
            break;
        }
        cout << endl;
    } while (choice != 0);

    return 0;
}