commit 23537c3ae93bc15d929f664a40f6434cc6a51c06
Author: GoldBro233 <bowensun_06@outlook.com>
Date:   Tue Apr 15 18:38:03 2025 +0800

    Init

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..a4fb4fb
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+build/
+.cache/
diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..c9549e5
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,7 @@
+cmake_minimum_required(VERSION 3.31)
+project (course_design)
+set (CMAKE_CXX_STANDARD 17)
+find_package(SQLite3 REQUIRED)
+
+add_executable(coursedesign main.cpp userAuth.cpp userAuth.h data.cpp data.h tools.cpp tools.h render_ui.cpp render_ui.h)
+target_link_libraries(coursedesign PRIVATE SQLite::SQLite3)
\ No newline at end of file
diff --git a/Course-Design.code-workspace b/Course-Design.code-workspace
new file mode 100644
index 0000000..a17b72e
--- /dev/null
+++ b/Course-Design.code-workspace
@@ -0,0 +1,11 @@
+{
+    "folders": [
+        // 将载入到工作区的文件夹列表
+        {
+            "path": "."
+        }
+    ],
+    "settings": {
+        // 工作区设置
+    }
+}
\ No newline at end of file
diff --git a/data.cpp b/data.cpp
new file mode 100644
index 0000000..6e4daa4
--- /dev/null
+++ b/data.cpp
@@ -0,0 +1,192 @@
+#include "data.h"
+#include "tools.h"
+#include <sqlite3.h>
+
+const char *CREATE_PA_TABLE = "CREATE TABLE IF NOT EXISTS pa_table ("
+                              "id INTEGER PRIMARY KEY AUTOINCREMENT,"
+                              "car_id TEXT NOT NULL,"
+                              "in_pa_time DATETIME,"
+                              "out_pa_time DATETIME,"
+                              "define_in_pa INTEGER);";
+const char *REGISTER_PA_CAR =
+    "INSERT INTO pa_table (car_id, in_pa_time, "
+    "out_pa_time, define_in_pa) VALUES (?1, ?2, ?3, ?4);";
+const char *SELECT_PA_CAR =
+    "SELECT id, car_id, in_pa_time, out_pa_time, define_in_pa FROM pa_table "
+    "WHERE define_in_pa = 0 "
+    "ORDER BY id DESC;";
+const char *SELECT_PA_LEFTCAR =
+    "SELECT id, car_id, in_pa_time, out_pa_time, define_in_pa FROM pa_table "
+    "WHERE define_in_pa = 1 "
+    "ORDER BY id DESC;";
+
+const char *UPDATE_PA_CAR =
+    "UPDATE pa_table SET out_pa_time = ?1, define_in_pa = ?3 WHERE id = ?2";
+const char *DELETE_PA_CAR = "DELETE FROM pa_table WHERE id = ?1;";
+
+void init_pa_data(sqlite3 *db) {
+  char *err_msg = nullptr;
+
+  int rc = sqlite3_exec(db, CREATE_PA_TABLE, nullptr, nullptr, &err_msg);
+  if (rc != SQLITE_OK) {
+    std::cerr << "创建表失败: " << err_msg << std::endl;
+    sqlite3_free(err_msg);
+    exit(1);
+  };
+};
+
+void register_pa_car(sqlite3 *db, const string &car_id) {
+  sqlite3_stmt *stmt;
+
+  int rc = sqlite3_prepare_v2(db, REGISTER_PA_CAR, -1, &stmt, nullptr);
+
+  if (rc != SQLITE_OK) {
+    std::cerr << "准备语句失败: " << sqlite3_errmsg(db) << std::endl;
+    exit(1);
+  }
+
+  int define_in_pa = 0;
+  string in_pa_time = get_utc8_time();
+  string NAtime = "N/A";
+
+  sqlite3_bind_text(stmt, 1, car_id.c_str(), -1, SQLITE_STATIC);
+  sqlite3_bind_text(stmt, 2, in_pa_time.c_str(), -1, SQLITE_STATIC);
+  sqlite3_bind_text(stmt, 3, NAtime.c_str(), -1, SQLITE_STATIC);
+  sqlite3_bind_int(stmt, 4, define_in_pa);
+
+  rc = sqlite3_step(stmt);
+  if (rc != SQLITE_DONE) {
+    std::cerr << "执行失败" << sqlite3_errmsg(db) << std::endl;
+    exit(1);
+  }
+
+  sqlite3_finalize(stmt);
+};
+
+vector<PAStruct> get_pa_cars(sqlite3 *db) {
+  vector<PAStruct> results;
+  sqlite3_stmt *stmt;
+
+  int rc = sqlite3_prepare_v2(db, SELECT_PA_CAR, -1, &stmt, nullptr);
+  if (rc != SQLITE_OK) {
+    std::cerr << "准备查询失败: " << sqlite3_errmsg(db) << std::endl;
+    exit(1);
+  }
+
+  while ((rc = sqlite3_step(stmt)) == SQLITE_ROW) {
+    PAStruct record;
+    record.id = sqlite3_column_int(stmt, 0);
+
+    const unsigned char *text1 = sqlite3_column_text(stmt, 1);
+    record.car_id = std::string(reinterpret_cast<const char *>(text1));
+
+    const unsigned char *time1 = sqlite3_column_text(stmt, 2);
+    record.in_pa_time = time1 ? reinterpret_cast<const char *>(time1) : "N/A";
+
+    const unsigned char *time2 = sqlite3_column_text(stmt, 3);
+    record.out_pa_time = time2 ? reinterpret_cast<const char *>(time2) : "N/A";
+
+    record.define_in_pa = sqlite3_column_int(stmt, 4);
+
+    results.push_back(record);
+  }
+
+  if (rc != SQLITE_DONE) {
+    std::cerr << "查询错误失败: " << sqlite3_errmsg(db) << std::endl;
+  }
+
+  sqlite3_finalize(stmt);
+  return results;
+}
+
+vector<PAStruct> get_pa_leftcars(sqlite3 *db) {
+  vector<PAStruct> results;
+  sqlite3_stmt *stmt;
+
+  int rc = sqlite3_prepare_v2(db, SELECT_PA_LEFTCAR, -1, &stmt, nullptr);
+  if (rc != SQLITE_OK) {
+    std::cerr << "准备查询失败: " << sqlite3_errmsg(db) << std::endl;
+    exit(1);
+  }
+
+  while ((rc = sqlite3_step(stmt)) == SQLITE_ROW) {
+    PAStruct record;
+    record.id = sqlite3_column_int(stmt, 0);
+
+    const unsigned char *text1 = sqlite3_column_text(stmt, 1);
+    record.car_id = std::string(reinterpret_cast<const char *>(text1));
+
+    const unsigned char *time1 = sqlite3_column_text(stmt, 2);
+    record.in_pa_time = time1 ? reinterpret_cast<const char *>(time1) : "N/A";
+
+    const unsigned char *time2 = sqlite3_column_text(stmt, 3);
+    record.out_pa_time = time2 ? reinterpret_cast<const char *>(time2) : "N/A";
+
+    record.define_in_pa = sqlite3_column_int(stmt, 4);
+
+    results.push_back(record);
+  }
+
+  if (rc != SQLITE_DONE) {
+    std::cerr << "查询错误失败: " << sqlite3_errmsg(db) << std::endl;
+  }
+
+  sqlite3_finalize(stmt);
+  return results;
+}
+
+bool car_leave_func(sqlite3 *db, int id) {
+  sqlite3_stmt *stmt;
+  int define_in_pa = 1;
+  std::string outtime = get_utc8_time();
+
+  int rc = sqlite3_prepare_v2(db, UPDATE_PA_CAR, -1, &stmt, nullptr);
+  if (rc != SQLITE_OK) {
+    std::cerr << "准备更新语句失败: " << sqlite3_errmsg(db) << std::endl;
+    return false;
+  }
+
+  sqlite3_bind_text(stmt, 1, outtime.c_str(), -1, SQLITE_STATIC);
+  sqlite3_bind_int(stmt, 3, define_in_pa);
+  sqlite3_bind_int(stmt, 2, id);
+
+  rc = sqlite3_step(stmt);
+  sqlite3_finalize(stmt);
+
+  if (rc != SQLITE_DONE) {
+    std::cerr << "更新执行失败: " << sqlite3_errmsg(db) << std::endl;
+    return false;
+  }
+
+  return true;
+}
+
+bool delete_pa_car(sqlite3 *db, int id) {
+  sqlite3_stmt *stmt = nullptr;
+
+  int rc = sqlite3_prepare_v2(db, DELETE_PA_CAR, -1, &stmt, nullptr);
+  if (rc != SQLITE_OK) {
+    std::cerr << "准备删除语句失败: " << sqlite3_errmsg(db) << std::endl;
+    return false;
+  }
+
+  rc = sqlite3_bind_int(stmt, 1, id);
+
+  if (rc != SQLITE_OK) {
+    std::cerr << "绑定参数失败: " << sqlite3_errmsg(db) << std::endl;
+    sqlite3_finalize(stmt);
+    return false;
+  }
+
+  rc = sqlite3_step(stmt);
+  const bool success = (rc == SQLITE_DONE);
+  const char *errorMsg = sqlite3_errmsg(db);
+
+  sqlite3_finalize(stmt);
+
+  if (!success) {
+    std::cerr << "删除执行失败： " << errorMsg << std::endl;
+    return false;
+  }
+  return true;
+};
\ No newline at end of file
diff --git a/data.h b/data.h
new file mode 100644
index 0000000..9a85ec7
--- /dev/null
+++ b/data.h
@@ -0,0 +1,24 @@
+#ifndef COURSE_DESIGN_DATA_H_
+#define COURSE_DESIGN_DATA_H_
+
+#include "tools.h"
+#include <sqlite3.h>
+
+using namespace std;
+
+struct PAStruct {
+  int id;
+  string car_id;
+  string in_pa_time;
+  string out_pa_time;
+  int define_in_pa;
+};
+
+void init_pa_data(sqlite3 *db);
+void register_pa_car(sqlite3 *db, const string &car_id);
+vector<PAStruct> get_pa_cars(sqlite3 *db);
+vector<PAStruct> get_pa_leftcars(sqlite3 *db);
+bool car_leave_func(sqlite3 *db, int id);
+bool delete_pa_car(sqlite3 *db, int id);
+
+#endif
\ No newline at end of file
diff --git a/main.cpp b/main.cpp
new file mode 100644
index 0000000..e671e4e
--- /dev/null
+++ b/main.cpp
@@ -0,0 +1,87 @@
+#include "data.h"
+#include "render_ui.h"
+#include "stdlib.h"
+#include "tools.h"
+#include "userAuth.h"
+#include <cstdlib>
+#include <sqlite3.h>
+
+using namespace std;
+
+const char *DB_NAME = "user_data.db";
+
+sqlite3 *create_connection() {
+  sqlite3 *db;
+  int rc = sqlite3_open(DB_NAME, &db);
+  if (rc != SQLITE_OK) {
+    std::cerr << "无法打开数据库：" << sqlite3_errmsg(db) << std::endl;
+    exit(1);
+  }
+  return db;
+}
+
+int main() {
+  sqlite3 *db = create_connection();
+  init_pa_data(db);
+  init_user_data(db);
+  string login_username;
+  string login_password;
+  bool user_authorized = false;
+
+  cout << "请输入用户名登录: ";
+  cin >> login_username;
+  cout << "请输入对应的密码: ";
+  cin >> login_password;
+  cout << endl;
+
+  user_authorized = login_user(db, login_username, login_password);
+
+  if (user_authorized) {
+    cout << "登录成功！" << endl;
+  } else {
+    cout << "登录失败! " << endl;
+    return 1;
+  }
+
+  while (user_authorized) {
+    system("clear");
+    switch (show_main_menu()) {
+    case 1:
+      system("clear");
+      handle_add_pa_record(db);
+      break;
+    case 2:
+      system("clear");
+      handle_leave_car(db);
+      break;
+    case 3:
+      system("clear");
+      handle_show_pa_records(db);
+      break;
+    case 4:
+      system("clear");
+      handle_show_pa_leftcar_records(db);
+      break;
+    case 5:
+      system("clear");
+      handle_add_user_record(db);
+      break;
+    case 6:
+      system("clear");
+      handle_show_user_records(db);
+      break;
+    case 7:
+      system("clear");
+      handle_update_userpassword_record(db);
+      break;
+    case 8:
+      system("clear");
+      handle_delete_user_record(db);
+      break;
+    case 9:
+      sqlite3_close(db);
+      std::cout << "退出应用" << std::endl;
+      return 0;
+    }
+  }
+}
\ No newline at end of file
diff --git a/render_ui.cpp b/render_ui.cpp
new file mode 100644
index 0000000..b59c4a6
--- /dev/null
+++ b/render_ui.cpp
@@ -0,0 +1,223 @@
+#include "render_ui.h"
+#include "data.h"
+#include "userAuth.h"
+#include <ostream>
+
+int show_main_menu() {
+  int choice = 0;
+
+  std::cout << endl
+            << "[=== 主菜单 ===]" << std::endl
+            << "1. 车辆进场" << std::endl
+            << "2. 车辆离场" << std::endl
+            << "3. 查看在场车辆" << std::endl
+            << "4. 查看离场车辆" << std::endl
+            << "5. 添加用户" << std::endl
+            << "6. 查看已有用户" << std::endl
+            << "7. 修改用户密码" << std::endl
+            << "8. 删除用户" << std::endl
+            << "9. 退出" << std::endl
+            << "请输入选项: ";
+
+  while (!(std::cin >> choice) || choice < 1 || choice > 9) {
+    std::cin.clear();
+    std::cin.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
+    std::cout << "请重新输入。" << std::endl;
+  }
+  std::cin.ignore();
+  return choice;
+}
+
+void display_user_records(const std::vector<UserStruct> &records) {
+  if (records.empty()) {
+    std::cout << "数据库中没有存储记录。" << std::endl;
+    return;
+  }
+
+  std::cout << "[====== 用户记录 ======]" << std::endl;
+  for (const auto &record : records) {
+    std::cout << "ID: " << record.id << std::endl
+              << "用户名称: " << record.username << std::endl
+              << "用户密码: " << record.userpassword << std::endl
+              << "创建时间: " << record.created_time << std::endl
+              << "[------------------------]" << std::endl;
+  }
+}
+
+void handle_show_user_records(sqlite3 *db) {
+  auto records = get_user_inputs(db);
+  display_user_records(records);
+}
+
+void display_pa_records(const std::vector<PAStruct> &records) {
+  if (records.empty()) {
+    std::cout << "数据库中没有存储记录。" << std::endl;
+    return;
+  }
+
+  std::cout << "[====== 车辆记录记录 ======]" << std::endl;
+  for (const auto &record : records) {
+    std::cout << "ID: " << record.id << std::endl
+              << "车牌号: " << record.car_id << std::endl
+              << "进场时间: " << record.in_pa_time << std::endl
+              << "离场时间: " << record.out_pa_time << std::endl
+              << "[------------------------]" <<std::endl;
+  }
+}
+
+void handle_show_pa_records(sqlite3 *db) {
+  auto records = get_pa_cars(db);
+  display_pa_records(records);
+}
+
+void handle_show_pa_leftcar_records (sqlite3 *db) {
+  auto records = get_pa_leftcars(db);
+  display_pa_records(records);
+}
+
+void handle_add_pa_record(sqlite3 *db) {
+  std::string user_input;
+  std::cout << "请输入要进场的车辆: " << std::endl;
+  std::getline(std::cin, user_input);
+
+  if (!user_input.empty()) {
+    register_pa_car(db, user_input);
+    std::cout << "车辆保存成功" << std::endl;
+  } else {
+    std::cout << "输入内容不能为空！" << std::endl;
+  }
+}
+
+void handle_add_user_record(sqlite3 *db) {
+  std::string user_input1;
+  std::cout << "请输入要注册的用户名: " << std::endl;
+  std::getline(std::cin, user_input1);
+
+  std::string user_input2;
+  std::cout << "请输入要注册的用户的密码: " << std::endl;
+  std::getline(std::cin, user_input2);
+
+  if (!user_input1.empty() && !user_input2.empty()) {
+    register_user(db, user_input1, user_input2);
+    std::cout << "用户保存成功" << std::endl;
+  } else {
+    std::cout << "输入内容不能为空！" << std::endl;
+  }
+}
+
+void handle_update_userpassword_record(sqlite3 *db) {
+  auto records = get_user_inputs(db);
+  display_user_records(records);
+
+  if (records.empty())
+    return;
+
+  int target_id;
+  std::cout << "请输入要更新的记录ID: " << std::endl;
+
+  if (!(std::cin >> target_id)) {
+    std::cin.clear();
+    std::cin.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
+    std::cout << "无效的ID输入" << std::endl;
+    return;
+  }
+  std::cin.ignore();
+
+  auto it = std::find_if(
+      records.begin(), records.end(),
+      [target_id](const UserStruct &u) { return u.id == target_id; });
+
+  if (it == records.end()) {
+    std::cout << "未能找到ID为 " << target_id << " 的记录" << std::endl;
+    return;
+  }
+
+  std::string new_content1;
+  std::cout << "原用户名 " << it->username << std::endl;
+  std::cout << "新用户名（直接回车取消） ";
+  std::getline(std::cin, new_content1);
+
+  std::string new_content2;
+  std::cout << "原用户密码 " << it->userpassword << std::endl;
+  std::cout << "新用户密码（直接回车取消） ";
+  std::getline(std::cin, new_content2);
+
+  if (new_content1.empty()) {
+    new_content1 = it->username;
+  }
+  if (new_content2.empty()) {
+    new_content2 = it->userpassword;
+  }
+
+  if (update_user(db, target_id, new_content1, new_content2)) {
+    std::cout << "更新成功！" << std::endl;
+  }
+  else {
+    std::cout << "更新失败!" << std::endl;
+  }
+}
+
+void handle_delete_user_record(sqlite3 *db) {
+  auto records = get_user_inputs(db);
+  display_user_records(records);
+
+  if (records.empty())
+    return;
+
+  std::cout << "请输入要删除的记录ID(或输入exit取消): " << std::endl;
+  std::string input;
+  std::getline(std::cin, input);
+
+  // 处理取消操作
+  if (input == "exit" || input == "EXIT") {
+    std::cout << "已取消删除操作" << std::endl;
+    return;
+  }
+
+  try {
+    int target_id = std::stoi(input);
+    auto it = std::find_if(
+        records.begin(), records.end(),
+        [target_id](const UserStruct &u) { return u.id == target_id; });
+
+    if (it == records.end()) {
+      std::cout << "未找到ID为 " << target_id << " 的记录" << std::endl;
+      return;
+    }
+
+    // 确认删除
+    std::cout << "确认删除以下记录吗? " << std::endl
+              << "ID: " << it->id << std::endl
+              << "用户名: " << it->username << std::endl
+              << "输入 y 确认，其他取消: ";
+    std::string confirm;
+    std::getline(std::cin, confirm);
+
+    if (confirm == "y" || confirm == "Y") {
+      if (delete_user(db, target_id)) {
+        std::cout << "记录删除成功! " << std::endl;
+      } else {
+        std::cout << "记录删除失败! " << std::endl;
+      }
+    } else {
+      std::cout << "已取消删除操作。 " << std::endl;
+    }
+  } catch (const std::invalid_argument &) {
+    std::cout << "无效的ID输入! " << std::endl;
+  } catch (const std::out_of_range &) {
+    std::cout << "ID超出有效范围! " << std::endl;
+  }
+}
+
+void handle_leave_car (sqlite3* db) {
+  auto records = get_pa_cars(db);
+  display_pa_records(records);
+
+  int choice;
+  std::cout << "请输入要离场的车辆：" ;
+  std::cin >> choice;
+
+  if (car_leave_func(db, choice)) {
+    std::cout << "车辆离场! " <<std::endl;
+  }
+}
diff --git a/render_ui.h b/render_ui.h
new file mode 100644
index 0000000..6e24372
--- /dev/null
+++ b/render_ui.h
@@ -0,0 +1,27 @@
+#ifndef COURSE_DESIGN_RENDER_UI_H_
+#define COURSE_DESIGN_RENDER_UI_H_
+
+#include "data.h"
+#include "tools.h"
+#include "userAuth.h"
+#include <algorithm>
+#include <ios>
+#include <iostream>
+#include <limits>
+#include <string>
+
+int show_main_menu();
+
+void display_user_records(const std::vector<UserStruct> &records);
+void handle_show_user_records(sqlite3 *db);
+void display_pa_records(const std::vector<PAStruct> &records);
+void handle_show_pa_records(sqlite3 *db);
+void handle_show_pa_leftcar_records(sqlite3 *db);
+
+    void handle_add_pa_record(sqlite3 *db);
+void handle_add_user_record(sqlite3 *db);
+void handle_leave_car(sqlite3 *db);
+
+void handle_update_userpassword_record(sqlite3 *db);
+void handle_delete_user_record(sqlite3 *db);
+#endif
\ No newline at end of file
diff --git a/tools.cpp b/tools.cpp
new file mode 100644
index 0000000..cdee9e7
--- /dev/null
+++ b/tools.cpp
@@ -0,0 +1,13 @@
+#include "tools.h"
+
+std::string get_utc8_time() {
+  auto now = std::chrono::system_clock::now();
+  std::time_t now_time = std::chrono::system_clock::to_time_t(now);
+
+  now_time += 8 * 3600;
+
+  std::tm *tm = std::gmtime(&now_time);
+  std::stringstream ss;
+  ss << std::put_time(tm, "%Y-%m-%d %H:%M:%S");
+  return ss.str();
+}
\ No newline at end of file
diff --git a/tools.h b/tools.h
new file mode 100644
index 0000000..a365e8a
--- /dev/null
+++ b/tools.h
@@ -0,0 +1,13 @@
+#ifndef COURSE_DESIGN_TOOLS_H_
+#define COURSE_DESIGN_TOOLS_H_
+
+#include "chrono"
+#include "iostream"
+#include "sqlite3.h"
+#include "string"
+#include "iomanip"
+#include "vector"
+
+std::string get_utc8_time();
+
+#endif
\ No newline at end of file
diff --git a/userAuth.cpp b/userAuth.cpp
new file mode 100644
index 0000000..045442c
--- /dev/null
+++ b/userAuth.cpp
@@ -0,0 +1,172 @@
+#include "userAuth.h"
+#include "tools.h"
+
+const char *CREATE_USER_TABLE = "CREATE TABLE IF NOT EXISTS user_data ("
+                                "id INTEGER PRIMARY KEY AUTOINCREMENT,"
+                                "username TEXT NOT NULL,"
+                                "userpassword TEXT NOT NULL,"
+                                "created_time DATETIME)";
+
+const char *REGISTER_USER = "INSERT INTO user_data (username, userpassword, "
+                            "created_time) VALUES (?1, ?2, ?3);";
+
+const char *LOGIN_USER =
+    "SELECT 1 FROM user_data WHERE username = ? AND userpassword = ?;";
+
+const char *SELECT_USER =
+    "SELECT id, username, userpassword, created_time FROM user_data "
+    "ORDER BY id DESC;";
+
+const char *UPDATE_USER =
+    "UPDATE user_data SET username = ?1, userpassword = ?3 WHERE id = ?2";
+
+const char *DELETE_USER = "DELETE FROM user_data WHERE id = ?1;";
+
+void init_user_data(sqlite3 *db) {
+  char *err_msg = nullptr;
+
+  int rc = sqlite3_exec(db, CREATE_USER_TABLE, nullptr, nullptr, &err_msg);
+  if (rc != SQLITE_OK) {
+    std::cerr << "创建表失败: " << err_msg << std::endl;
+    sqlite3_free(err_msg);
+    exit(1);
+  };
+};
+
+void register_user(sqlite3 *db, const string &username,
+                   const string &userpassword) {
+  sqlite3_stmt *stmt;
+
+  int rc = sqlite3_prepare_v2(db, REGISTER_USER, -1, &stmt, nullptr);
+
+  if (rc != SQLITE_OK) {
+    std::cerr << "准备语句失败: " << sqlite3_errmsg(db) << std::endl;
+    exit(1);
+  }
+
+  sqlite3_bind_text(stmt, 1, username.c_str(), -1, SQLITE_STATIC);
+  sqlite3_bind_text(stmt, 2, userpassword.c_str(), -1, SQLITE_STATIC);
+
+  string timestamp = get_utc8_time();
+  sqlite3_bind_text(stmt, 3, timestamp.c_str(), -1, SQLITE_STATIC);
+
+  rc = sqlite3_step(stmt);
+  if (rc != SQLITE_DONE) {
+    std::cerr << "执行失败" << sqlite3_errmsg(db) << std::endl;
+    exit(1);
+  }
+
+  sqlite3_finalize(stmt);
+};
+
+bool login_user(sqlite3 *db, const std::string &username,
+                const std::string &password) {
+  sqlite3_stmt *stmt;
+  bool authResult = false;
+
+  if (sqlite3_prepare_v2(db, LOGIN_USER, -1, &stmt, nullptr) != SQLITE_OK) {
+    std::cerr << "准备语句失败: " << sqlite3_errmsg(db) << std::endl;
+    sqlite3_close(db);
+    return false;
+  }
+
+  sqlite3_bind_text(stmt, 1, username.c_str(), -1, SQLITE_STATIC);
+  sqlite3_bind_text(stmt, 2, password.c_str(), -1, SQLITE_STATIC);
+
+  // 执行查询
+  if (sqlite3_step(stmt) == SQLITE_ROW) {
+    authResult = true; // 找到匹配记录
+  }
+
+  sqlite3_finalize(stmt);
+  return authResult;
+}
+
+vector<UserStruct> get_user_inputs(sqlite3 *db) {
+  vector<UserStruct> results;
+  sqlite3_stmt *stmt;
+
+  int rc = sqlite3_prepare_v2(db, SELECT_USER, -1, &stmt, nullptr);
+  if (rc != SQLITE_OK) {
+    std::cerr << "准备查询失败: " << sqlite3_errmsg(db) << std::endl;
+    exit(1);
+  }
+
+  while ((rc = sqlite3_step(stmt)) == SQLITE_ROW) {
+    UserStruct record;
+    record.id = sqlite3_column_int(stmt, 0);
+
+    const unsigned char *text1 = sqlite3_column_text(stmt, 1);
+    record.username = std::string(reinterpret_cast<const char *>(text1));
+
+    const unsigned char *text2 = sqlite3_column_text(stmt, 2);
+    record.userpassword = std::string(reinterpret_cast<const char *>(text2));
+
+    const unsigned char *time = sqlite3_column_text(stmt, 3);
+    record.created_time = time ? reinterpret_cast<const char *>(time) : "N/A";
+
+    results.push_back(record);
+  }
+
+  if (rc != SQLITE_DONE) {
+    std::cerr << "查询错误失败: " << sqlite3_errmsg(db) << std::endl;
+  }
+
+  sqlite3_finalize(stmt);
+  return results;
+}
+
+bool update_user(sqlite3 *db, int id, const string &new_username,
+                 const string &new_password) {
+  sqlite3_stmt *stmt;
+
+  int rc = sqlite3_prepare_v2(db, UPDATE_USER, -1, &stmt, nullptr);
+  if (rc != SQLITE_OK) {
+    std::cerr << "准备更新语句失败: " << sqlite3_errmsg(db) << std::endl;
+    return false;
+  }
+
+  sqlite3_bind_text(stmt, 1, new_username.c_str(), -1, SQLITE_STATIC);
+  sqlite3_bind_text(stmt, 3, new_password.c_str(), -1, SQLITE_STATIC);
+  sqlite3_bind_int(stmt, 2, id);
+
+  rc = sqlite3_step(stmt);
+  sqlite3_finalize(stmt);
+
+  if (rc != SQLITE_DONE) {
+    std::cerr << "更新执行失败: " << sqlite3_errmsg(db) << std::endl;
+    return false;
+  }
+
+  return true;
+}
+
+bool delete_user(sqlite3 *db, int id) {
+  sqlite3_stmt *stmt = nullptr;
+
+  int rc = sqlite3_prepare_v2(db, DELETE_USER, -1, &stmt, nullptr);
+  if (rc != SQLITE_OK) {
+    std::cerr << "准备删除语句失败: " << sqlite3_errmsg(db) << std::endl;
+    return false;
+  }
+
+  rc = sqlite3_bind_int(stmt, 1, id);
+
+  if (rc != SQLITE_OK) {
+    std::cerr << "绑定参数失败: " << sqlite3_errmsg(db) << std::endl;
+    sqlite3_finalize(stmt);
+    return false;
+  }
+
+  rc = sqlite3_step(stmt);
+  const bool success = (rc == SQLITE_DONE);
+  const char *errorMsg = sqlite3_errmsg(db);
+
+  sqlite3_finalize(stmt);
+
+  if (!success) {
+    std::cerr << "删除执行失败： " << errorMsg << std::endl;
+    return false;
+  }
+  return true;
+};
diff --git a/userAuth.h b/userAuth.h
new file mode 100644
index 0000000..c85b802
--- /dev/null
+++ b/userAuth.h
@@ -0,0 +1,28 @@
+#ifndef COURSE_DESIGN_USERAUTH_H_
+#define COURSE_DESIGN_USERAUTH_H_
+
+#include "sqlite3.h"
+#include "tools.h"
+
+using namespace std;
+
+struct UserStruct {
+  int id;
+  string username;
+  string userpassword;
+  string created_time;
+};
+
+void init_user_data(sqlite3 *db);
+
+void register_user(sqlite3 *db, const string &username,
+                   const string &userpassword);
+bool login_user(sqlite3 *db, const std::string &username,
+                const std::string &password);
+bool update_user(sqlite3 *db, int id, const string &new_username,
+                 const string &new_password);
+vector<UserStruct> get_user_inputs(sqlite3 *db);
+
+bool delete_user(sqlite3 *db, int id);
+
+#endif
\ No newline at end of file