scala图书管理系统【ui】软件包

LibrarayPresentation

package org.app
package ui

import org.app.modeis.{BookModel, UserModel}
import org.app.service.{BookService, UserService}

import scala.io.StdIn
import scala.io.StdIn.readLine

class LibrarayPresentation {

  private val BookService = new BookService()
  private val UserService = new UserService()
  //辅助方法，输入图书信息，返回一个BookModel
  private def inputBookInfo():BookModel={
    println("请输入图书的名称：")
    val name=readLine().trim
    println("请输入图书的作者：")
    val author=readLine().trim
    println("请输入图书是否可以外接（true/false）：")
    val available=StdIn.readBoolean()
    BookModel(0,name,author,available)
  }
  // 显示游客的菜单
  def showVisitorMenu(): Unit = {
    var running = true
    while (running) {
      println("欢迎来到我的图书管理系统, 请选择")
      println("1. 查看所有图书")
      println("2. 查询图书")
      println("3. 登录")
      println("4. 离开")

      // 获取用户的操作
      val choice = StdIn.readLine().trim
      choice match {
        case "1" =>
          // 调用业务逻辑层的方法
          val results = BookService.searchBooks("")
          if(results.nonEmpty){
            results.foreach(println)
          } else {
            println("没有找到图书")
          }
        case "2" =>
          val query = readLine("请输入查询关键字(书名，作者):").trim
          val results = BookService.searchBooks(query)
          if(results.nonEmpty){
            println("=======查询图书的结果：=======")
            results.foreach(println)
          } else {
            println("没有找到图书")
          }
        case "3" =>
          println("请输入用户名：")
          val username = StdIn.readLine().trim
          println("请输入密码：")
          val password = StdIn.readLine().trim
          // 调用Service的方法，进行登录
          val userOpt = UserService.authenticateUser(username, password)
          if(userOpt.isEmpty){
            println("用户名或密码错误")
          } else {
            println("登录成功")
            val user = userOpt.get
            user.role match {
              case "管理员" => showAdminMenu(user)
              case "普通用户" => showUserMenu(user)
            }
          }
        case "4" =>
          running = false
          println("感谢你的使用，下次再见")
        case _ => println("无效的选择")
      }
    }
  }

  // 显示管理员的菜单
  def showAdminMenu(user:UserModel): Unit = {
    var running = true
    while (running) {
      println(s"欢迎管理员:${user.username},来到我的图书管理系统, 请选择")
      println("1. 添加图书")
      println("2. 查询图书")
      println("3. 添加用户")
      println("4. 退出")

      // 获取用户的操作
      val choice = StdIn.readLine().trim
      choice match {
        case "1" =>
          val book=inputBookInfo()
          BookService.addBook(book)
          println(s"图书《${book.name}》添加成功")
        case "2" => println("查询图书")
        case "3" =>
          val username=StdIn.readLine("请输入用户名：")
          if (UserService.addUser(username)){
            println("用户添加成功")
          }else{
            println("用户添加失败")
          }
        case "4" => running = false
        case _ => println("无效的选择")
      }
    }
  }
  // 显示登录用户的菜单
  def showUserMenu(user:UserModel): Unit = {
    var running = true
    while (running) {
      println(s"欢迎用户:${user.username},来到我的图书管理系统, 请选择")
      println("1. 借阅图书")
      println("2. 查询借阅图书")
      println("3. 还书")
      println("4. 退出")

      // 获取用户的操作
      val choice = StdIn.readLine().trim
      choice match {
        case "1" =>
          try {
            val id = readLine("请输入图书的ID:").toInt
            BookService.borrowBook(user.username, id)
          } catch {
            case e:Exception =>
              println(e)
              println("输入的图书ID无效")
          }
        case "2" => println("查询借阅图书")
//
        val borrowRecords=BookService.queryBorrwRecords(user.username)
        if(borrowRecords.isEmpty){
          println("没有借阅记录")
        }else{
          println("查询结果，一共接了几本，换了？本，？本为归还")
          for (record <- borrowRecords){
            println(record)
            val returnDate=record.returnDate.getOrElse("未归还")
            println(s"借阅日期：${record.borrowDate}.归还日期：$returnDate")
          }
        }
        case "3"=>
          try {
            val id = readLine("请输入要归还的图书的ID:").toInt
            if(BookService.returnBook(user.username, id)){
              println("归还图书成功")
            }else{
              println("归还图书失败")
            }
          } catch {
            case e: Exception =>
              println(e)
              println("输入的图书ID无效")
          }
        case "4" => running = false
        case _ => println("无效的选择")
      }
    }
  }

  def showMenu(): Unit = {
    showVisitorMenu()
  }
}