package Crm;

import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.TestOnly;

import java.util.ArrayList;
import java.util.Objects;
import java.util.Scanner;

public class util {

 static ArrayList<User> userArrayList = new ArrayList<>();
 static Scanner scan = new Scanner(System.in);

 public static void menu() {
 System.out.println("**************客户信息管理软件**************");
 System.out.println(" 1.客户列表");
 System.out.println(" 2.增加客户");
 System.out.println(" 3.修改信息");
 System.out.println(" 4.删除客户");
 System.out.println(" 5.退 出");
 System.out.print(" 请输入1-5:");
 }

 public static void showUserList() {
 System.out.println("--------------客户列表--------------");
 System.out.println("id\t姓名\t性别\t年龄\t电话\t邮箱");
 if (userArrayList.size() > 0) {
 for (int i = 0; i < userArrayList.size(); i++) {
 User user = userArrayList.get(i);
 System.out.printf("%d\t%s\t%s\t%d\t%s\t%s\n", i+1, user.getName(), user.getSex(), user.getAge(), user.getPhone(), user.getMail());
 }
 }
 }

 public static char readFlag() {
 return scan.next().charAt(0);
 }

 public static char confirm() {
 return scan.next().charAt(0);
 }

 public static void addUser() {
 User tempUser = new User();
 System.out.print("请输入用户姓名:");
 tempUser.setName(scan.next());
 System.out.print("请输入用户性别:");
 tempUser.setSex(scan.next());
 System.out.print("请输入用户年龄:");
 tempUser.setAge(scan.nextByte());
 System.out.print("请输入用户电话:");
 tempUser.setPhone(scan.next());
 System.out.print("请输入用户邮箱:");
 tempUser.setMail(scan.next());
 showUser(tempUser);
 System.out.print("是否确定添加(y/n):");
 char flag = confirm();
 if (flag == 'y') {
 userArrayList.add(tempUser);
 }
 }

 private static @NotNull String nextLinToString() {
 String tempString = scan.nextLine();
 if (!Objects.equals(tempString, "")) {
 return tempString.trim();
 }
 return "";
 }

 private static byte nextLinToByte() {
 String tempString = scan.nextLine();
 if (!Objects.equals(tempString, "")) {
 return Byte.parseByte(tempString.trim());
 }
 return -1;
 }

 public static void modifyUser() {
 System.out.print("请输入要修改用户的id:");
 int userId = scan.nextInt();
 User tempUser = userArrayList.get(userId-1);
 System.out.println("不需要修改请直接回车...");
 System.out.printf("请输入新的用户姓名(%s):", tempUser.getName());
 tempUser.setName(nextLinToString());
 System.out.printf("请输入新的用户性别(%s):", tempUser.getSex());
 tempUser.setSex(nextLinToString());
 System.out.printf("请输入新的用户年龄(%d):", tempUser.getAge());
 tempUser.setAge(nextLinToByte());
 System.out.printf("请输入新的用户电话(%s):", tempUser.getPhone());
 tempUser.setPhone(nextLinToString());
 System.out.printf("请输入新的用户邮箱(%s):", tempUser.getMail());
 tempUser.setMail(nextLinToString());
 }

 public static void deleteUser() {
 System.out.print("请输入要删除用户的id:");
 int userId = scan.nextInt();
 System.out.printf("是否确认要删除id为%d的用户(y/n):", userId);
 char flag = confirm();
 if (flag == 'y') {
 userArrayList.remove(userId - 1);
 } else {
 System.out.println("未执行删除操作...");
 }
 }

 private static void showUser(@NotNull User user) {
 System.out.printf("%s\t%s\t%d\t%s\t%s\n", user.getName(), user.getSex(), user.getAge(), user.getPhone(), user.getMail());
 }

}