#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <windows.h>

// 定义成绩结构体
typedef struct Score
{
    char name[50];
    float score;
} Score;

// 定义学生结构体
typedef struct Student
{
    char name[50];
    int id;
    float key;
    Score performance[3];
} Student;

// 定义老师结构体
typedef struct Teacher
{
    char name[50];
    int id;
    float key;
} Teacher;

// 定义管理员
typedef struct SystemManager
{
    char key[10];
} SystemManager;

// 定义函数

// 老师端
void teacherMenu(Student students[], int numStudent, Teacher teacher);
void addStudent(Student students[], int *numStudent);
int searchStudent1(Student students[], int numStudent);
void searchStudent2(Student students[], int numStudent);
void deleteStudent(Student students[], int *numStudent);
void modifyStudent(Student students[], int numStudent);
void printAllStudent(Student students[], int numStudent);
void changeTearcherPassword(Teacher teacher);
int teacherLogin(Teacher teachers[], int *numTeacher);

// 学生端
void studentMenu(Student student, int numStudent);
void printScore(Student student, int numStudent);
void changeStudentPassword(Student student);
int studentLogin(Student students[], int *numStudent);

// 管理员端
void managerMenu(Student students[], int numStudent, Teacher teachers[], int numTeacher);

void printAllStudent(Student students[], int numStudent);
void addStudent(Student students[], int *numStudent);
void searchStudent2(Student students[], int numStudent);
void deleteStudent(Student students[], int *numStudent);
void modifyStudent(Student students[], int numStudent);
void changePassword1(Student students[], int numStudent);

void printAllTeacher(Teacher teachers[], int numTeacher);
void addTeacher(Teacher teachers[], int *numTeacher);
void searchTeacher(Teacher teachers[], int numTeacher);
void deleteTeacher(Teacher teachers[], int *numTeacher);
void modifyTeacher(Teacher teachers[], int numTeacher);
void changePassword2(Teacher teachers[], int numTeacher);

int main()
{
    SetConsoleOutputCP(65001);
    // 初始化管理员信息
    struct SystemManager manager;
    strcpy(manager.key, "123.com");

    struct Student students[500]; // 存储学生信息
    int numStudent = 2;           // 学生总人数

    struct Teacher teachers[100]; // 存储教师信息
    int numTeacher = 1;           // 教师总人数

    // 基础信息
    strcpy(students[0].name, "张三");
    students[0].key = 123456;
    students[0].id = 20221001;
    strcpy(students[0].performance[0].name, "语文");
    strcpy(students[0].performance[1].name, "数学");
    strcpy(students[0].performance[2].name, "英语");
    students[0].performance[0].score = 95;
    students[0].performance[1].score = 100;
    students[0].performance[2].score = 120;

    strcpy(students[1].name, "李四");
    students[1].key = 123456;
    students[1].id = 20221002;
    strcpy(students[1].performance[0].name, "语文");
    strcpy(students[1].performance[1].name, "数学");
    strcpy(students[1].performance[2].name, "英语");
    students[1].performance[0].score = 115;
    students[1].performance[1].score = 110;
    students[1].performance[2].score = 130;

    strcpy(teachers[0].name, "王五");
    teachers[0].key = 123456;
    teachers[0].id = 19781001;

    while (1)
    {
        printf("\n\n*************欢迎使用学生管理系统*************\n");
        printf("*               1.学生登陆                    *\n");
        printf("*               2.教师登陆                    *\n");
        printf("*               3.管理员登陆                   *\n");
        printf("*               0.退出                        *\n");
        printf("***********************************************\n");

        int choice;
        scanf("%d", &choice);

        if (choice == 1)
        { // 学生
            int num;
            num = studentLogin(students, &numStudent);
            if (num != 1000)
            {
                studentMenu(students[num], numStudent);
            }
            else
            {
                printf("登陆失败，返回主界面\n");
            }
        }
        else if (choice == 2)
        { // 教师
            int num;
            num = teacherLogin(teachers, &numTeacher);
            if (num != 1000)
            {
                teacherMenu(students, numStudent, teachers[num]);
            }
            else
            {
                printf("登陆失败，返回主界面\n");
            }
        }
        else if (choice == 3)
        { // 管理员
            int cmp;
            char input[8];
            printf("\n请输入密码：");
            scanf("%s", input);
            cmp = strcmp(manager.key, input);
            if (cmp == 0)
            {
                managerMenu(students, numStudent, teachers, numTeacher);
            }
            else
            {
                printf("登陆失败。\n");
            }
        }
        else if (choice == 0)
        { // 退出
            break;
        }
        else
        {
            printf("非法输入，请重新输入\n");
        }
    }

    return 0;
}

// 学生端

// 登陆
int studentLogin(Student students[], int *numStudent)
{
    printf("\n请输入学生的id：");
    int id;
    float key;
    scanf("%d", &id);

    int i, n;
    n = 0;
    for (i = 0; i < *numStudent; i++)
    {
        if (students[i].id == id)
        {
            n = 1;
            break;
        }
    }
    if (n != 0)
    {
        printf("请输入密码：");
        scanf("%f", &key);
        if (key == students[i].key)
        {
            return i;
        }
        else
        {
            printf("密码错误\n");
            return 1000;
        }
    }
    else
    {
        printf("id错误");
        return 1000;
    }
}

// 打印菜单
void studentMenu(Student student, int numStudent)
{
    int choice;
    do
    {
        printf("\n\n");
        printf("\t%s同学\tID:%d\n你好！\n", student.name, student.id);
        printf("**************欢迎使用学生管理系统*************\n");
        printf("*               1.查看成绩                    *\n");
        printf("*               2.修改密码                    *\n");
        printf("*               0.退出                         *\n");
        printf("***********************************************\n");
        printf("请输入您的选择：");
        scanf("%d", &choice);

        if (choice == 1)
        { // 查看成绩
            printScore(student, numStudent);
        }
        else if (choice == 2)
        { // 修改密码
            changeStudentPassword(student);
        }
        else if (choice == 0)
        { // 退出
            break;
        }
        else
        {
            printf("非法输入，请重新输入\n");
        }
    } while (1);
}

// 查看成绩
void printScore(Student student, int numStudent)
{
    printf("\n\n%s同学，你的成绩如下：\n", student.name);
    printf("%s: %.2f\n", student.performance[0].name, student.performance[0].score);
    printf("%s: %.2f\n", student.performance[1].name, student.performance[0].score);
    printf("%s: %.2f\n", student.performance[2].name, student.performance[0].score);
}

// 修改密码
void changeStudentPassword(Student student)
{
    float key1, key2;
    printf("请输入旧密码：");
    scanf("%f", &key1);
    if (key1 == student.key)
    {
        printf("密码正确，请输入新密码：");
        scanf("%f", &key2);
        student.key = key2;
        printf("修改成功！");
    }
    else
    {
        printf("密码错误");
    }
}

// 教师端

// 打印菜单
void teacherMenu(Student students[], int numStudent, Teacher teacher)
{
    int choice;
    do
    {
        printf("\n\n");
        printf("\t%s老师\tID:%d\n您好！\n", teacher.name, teacher.id);
        printf("*************欢迎使用学生管理系统*************\n");
        printf("*               1.添加学生                     *\n");
        printf("*               2.查找学生                     *\n");
        printf("*               3.删除学生                     *\n");
        printf("*               4.修改学生信息                 *\n");
        printf("*               5.输出所有学生信息             *\n");
        printf("*               6.修改密码                     *\n");
        printf("*               0.退出                         *\n");
        printf("***********************************************\n");
        printf("请输入您的选择：");
        scanf("%d", &choice);

        if (choice == 1)
        { // 添加学生
            addStudent(students, &numStudent);
        }
        else if (choice == 2)
        { // 查找学生
            searchStudent2(students, numStudent);
        }
        else if (choice == 3)
        { // 删除学生
            deleteStudent(students, &numStudent);
        }
        else if (choice == 4)
        { // 修改学生信息
            modifyStudent(students, numStudent);
        }
        else if (choice == 5)
        { // 输出所有学生信息
            printAllStudent(students, numStudent);
        }
        else if (choice == 6)
        { // 修改密码
            changeTearcherPassword(teacher);
        }
        else if (choice == 0)
        { // 退出
            break;
        }
        else
        {
            printf("非法输入，请重新输入\n");
        }
    } while (1);
}

// 教师登陆
int teacherLogin(Teacher teachers[], int *numTeacher)
{
    printf("\n请输入教师的id：");
    int id;
    float key;
    scanf("%d", &id);

    int i, n;
    n = 0;
    for (i = 0; i < *numTeacher; i++)
    {
        if (teachers[i].id == id)
        {
            n = 1;
            break;
        }
    }
    if (n != 0)
    {
        printf("请输入教师的密码：");
        scanf("%f", &key);
        if (key == teachers[i].key)
        {
            return i;
        }
        else
        {
            printf("密码错误\n");
            return 1000;
        }
    }
    else
    {
        printf("id错误");
        return 1000;
    }
}

// 添加学生
void addStudent(Student students[], int *numStudent)
{
    printf("\n请输入学生姓名：");
    scanf("%s", students[*numStudent].name);

    printf("请输入学生学号：");
    scanf("%d", &students[*numStudent].id);

    printf("请输入学生分数：\n");
    Score s1 = students[*numStudent].performance[0];
    Score s2 = students[*numStudent].performance[1];
    Score s3 = students[*numStudent].performance[2];
    strcpy(s1.name, "语文");
    strcpy(s1.name, "数学");
    strcpy(s1.name, "英语");
    printf("语文：");
    scanf("%f", &s1.score);
    printf("数学：");
    scanf("%f", &s2.score);
    printf("英语：");
    scanf("%f", &s3.score);

    printf("默认密码：123456\n");
    students[*numStudent].key = 123456;

    printf("添加成功\n");
    (*numStudent)++;
}

// 查找学生1
int searchStudent1(Student students[], int numStudent)
{
    printf("\n请选择搜索需要修改学生的方式：\n1.姓名\n2.学号\n");
    int choice;
    scanf("%d", &choice);
    int i, n;
    n = 0;
    if (choice == 1)
    {
        printf("\n请输入要查找的学生姓名：");
        char name[50];
        scanf("%s", name);

        for (int i = 0; i < numStudent; i++)
        {
            if (strcmp(students[i].name, name) == 0)
            {
                n = 1;
                break;
            }
        }
    }
    else if (choice == 2)
    {
        printf("\n请输入学生的学号：");
        int id;
        scanf("%d", &id);

        for (i = 0; i < numStudent; i++)
        {
            if (students[i].id == id)
            {
                n = 1;
                break;
            }
        }
    }
    else
    {
        printf("输入格式错误！");
    }
    if (n == 0)
    {
        return 1000;
    }
    else
    {
        return i;
    }
}
// 查找学生2
void searchStudent2(Student students[], int numStudent)
{
    int i = searchStudent1(students, numStudent);
    if (i != 1000)
    {
        printf("姓名：%s \n学号：%d \n分数：\n", students[i].name, students[i].id);
        printf("%s: %.2f\n", students[i].performance[0].name, students[i].performance[0].score);
        printf("%s: %.2f\n", students[i].performance[1].name, students[i].performance[1].score);
        printf("%s: %.2f\n", students[i].performance[2].name, students[i].performance[2].score);
    }
    else
    {
        printf("查无此人！");
    }
}

// 删除学生
void deleteStudent(Student students[], int *numStudent)
{
    printf("请输入要删除的学生的学号：");
    int id;
    scanf("%d", &id);

    int i;
    for (i = 0; i < *numStudent; i++)
    {
        if (students[i].id == id)
        {
            break;
        }
    }

    if (i < *numStudent)
    {
        for (int j = i; j < (*numStudent) - 1; j++)
        {
            students[j] = students[j + 1];
        }

        (*numStudent)--;
        printf("删除成功\n");
    }
    else
    {
        printf("查无此人\n");
    }
}

// 修改学生信息
void modifyStudent(Student students[], int numStudent)
{
    int i = searchStudent1(students, numStudent);
    if (i != 1000)
    {
        int choice;
        do
        {
            printf("\n*******************修改学生信息******************\n");
            printf("*               1.修改学生姓名                  *\n");
            printf("*               2.修改学生语文成绩              *\n");
            printf("*               3.修改学生数学成绩              *\n");
            printf("*               4.修改学生英语成绩              *\n");
            printf("*               0.退出                         *\n");
            printf("***********************************************\n");
            printf("请输入您的选择：");
            scanf("%d", &choice);
            float x;
            char y[50];
            switch (choice)
            {
            case 1:
                printf("将名字修改为：");
                scanf("%s", &y);
                strcpy(students[i].name, y);
                printf("修改完成！");
                break;
            case 2:
                printf("将%s的原成绩为%f", students[i].performance[0].name, students[i].performance[0].score);
                printf("修改为：");
                scanf("%f", &x);
                students[i].performance[0].score = x;
                printf("修改完成！");
                break;
            case 3:
                printf("将%s的原成绩为%f", students[i].performance[1].name, students[i].performance[1].score);
                printf("修改为：");
                scanf("%f", &x);
                students[i].performance[0].score = x;
                printf("修改完成！");
                break;
            case 4:
                printf("将%s的原成绩为%f", students[i].performance[2].name, students[i].performance[2].score);
                printf("修改为：");
                scanf("%f", &x);
                students[i].performance[0].score = x;
                printf("修改完成！");
                break;
            case 0:
                break;
            default:
                printf("输入错误！");
                break;
            }
        } while (choice != 0);
    }
    else
    {
        printf("查无此人！");
    }
}

// 修改密码
void changeTearcherPassword(Teacher teacher)
{
    float key1, key2;
    printf("\n请输入旧密码：");
    scanf("%f", &key1);
    if (key1 == teacher.key)
    {
        printf("密码正确，请输入新密码：");
        scanf("%f", &key2);
        teacher.key = key2;
        printf("修改成功！");
    }
    else
    {
        printf("密码错误");
    }
}

// 查看所有学生
void printAllStudent(Student students[], int numStudent)
{
    printf("\n");
    printf(" 姓名          |  ID\n");
    printf("-------------------------------\n");
    for (int i = 0; i < numStudent; i++)
    {
        printf("%s\t\t%d\n", students[i].name, students[i].id);
    }
}

// 管理员端
// 面板
void managerMenu(Student students[], int numStudent, Teacher teachers[], int numTeacher)
{
    int choice;
    do
    {
        int choice;

        printf("\n\n");
        printf("***************欢迎使用学生管理系统*************\n");
        printf("*               1.管理学生                     *\n");
        printf("*               2.管理教师                     *\n");
        printf("*               0.退出                         *\n");
        printf("***********************************************\n");
        printf("请输入您的选择：");
        scanf("%d", &choice);

        if (choice == 1)
        { // 学生
            int x;
            do
            {
                printf("\n\n");
                printf("***************欢迎使用学生管理系统*************\n");
                printf("*               1.添加学生                     *\n");
                printf("*               2.查找学生                     *\n");
                printf("*               3.删除学生                     *\n");
                printf("*               4.修改学生信息                 *\n");
                printf("*               5.输出所有学生信息             *\n");
                printf("*               6.修改密码                     *\n");
                printf("*               0.返回上一界面                  *\n");
                printf("***********************************************\n");
                printf("请输入您的选择：");
                scanf("%d", &x);
                if (x == 1)
                { // 添加学生
                    addStudent(students, &numStudent);
                }
                else if (x == 2)
                { // 查找学生
                    searchStudent2(students, numStudent);
                }
                else if (x == 3)
                { // 删除学生
                    deleteStudent(students, &numStudent);
                }
                else if (x == 4)
                { // 修改学生信息
                    modifyStudent(students, numStudent);
                }
                else if (x == 5)
                { // 输出所有学生信息
                    printAllStudent(students, numStudent);
                }
                else if (x == 6)
                { // 修改密码
                    changePassword1(students, numStudent);
                }
                else if (x == 0)
                { // 退出
                    break;
                }
                else
                {
                    printf("非法输入，请重新输入\n");
                }
            } while (1);
        }
        else if (choice == 2)
        { // 教师
            int y;
            do
            {
                printf("\n\n");
                printf("***************欢迎使用学生管理系统*************\n");
                printf("*               1.添加教师                    *\n");
                printf("*               2.查找教师                     *\n");
                printf("*               3.删除教师                     *\n");
                printf("*               4.修改教师姓名                 *\n");
                printf("*               5.输出所有教师信息             *\n");
                printf("*               6.修改密码                     *\n");
                printf("*               0.返回上一界面                  *\n");
                printf("***********************************************\n");
                printf("请输入您的选择：");
                scanf("%d", &y);
                if (y == 1)
                { // 添加教师
                    addTeacher(teachers, &numTeacher);
                }
                else if (y == 2)
                { // 查找教师
                    searchTeacher(teachers, numTeacher);
                }
                else if (y == 3)
                { // 删除教师
                    deleteTeacher(teachers, &numTeacher);
                }
                else if (y == 4)
                { // 修改教师信息
                    modifyTeacher(teachers, numTeacher);
                }
                else if (y == 5)
                { // 输出所有教师信息
                    printAllTeacher(teachers, numTeacher);
                }
                else if (y == 6)
                { // 修改密码
                    changePassword2(teachers, numTeacher);
                }
                else if (y == 0)
                { // 退出
                    break;
                }
                else
                {
                    printf("非法输入，请重新输入\n");
                }
            } while (1);
        }
        else if (choice == 0)
        { // 退出
            break;
        }
        else
        {
            printf("非法输入，请重新输入\n");
        }
    } while (1);
}

// 查看所有教师
void printAllTeacher(Teacher teachers[], int numTeacher)
{
    printf("\n");
    printf(" 姓名          |  ID\n");
    printf("-------------------------------\n");
    for (int i = 0; i < numTeacher; i++)
    {
        printf("%s\t\t%d\n", teachers[i].name, teachers[i].id);
    }
}

// 添加教师
void addTeacher(Teacher teachers[], int *numTeacher)
{
    printf("请输入教师姓名：");
    scanf("%s", teachers[*numTeacher].name);

    printf("请输入教师ID：");
    scanf("%d", &teachers[*numTeacher].id);

    printf("默认密码：123456\n");
    teachers[*numTeacher].key = 123456;

    printf("添加成功\n");
    (*numTeacher)++;
}

// 查教师生1
int searchTeacher1(Teacher teachers[], int numTeacher)
{
    printf("请选择搜索需要修改教师的方式：\n1.姓名\n2.ID\n");
    int choice;
    scanf("%d", &choice);
    int i, n;
    n = 0;
    if (choice == 1)
    {
        printf("\n请输入要查找的教师姓名：");
        char name[50];
        scanf("%s", name);

        for (int i = 0; i < numTeacher; i++)
        {
            if (strcmp(teachers[i].name, name) == 0)
            {
                n++;
                break;
            }
        }
    }
    else if (choice == 2)
    {
        printf("\n请输入要修改信息教师的ID：");
        int id;
        scanf("%d", &id);

        for (i = 0; i < numTeacher; i++)
        {
            if (teachers[i].id == id)
            {
                n++;
                break;
            }
        }
    }
    else
    {
        printf("输入格式错误！");
    }
    if (n == 0)
    {
        return 1000;
    }
    else
    {
        return i;
    }
}
// 查找教师2
void searchTeacher(Teacher teachers[], int numTeacher)
{
    int i = searchTeacher1(teachers, numTeacher);
    if (i != 1000)
    {
        printf("姓名：%s \nID：%d ", teachers[i].name, teachers[i].id);
    }
    else
    {
        printf("查无此人！");
    }
}
// 删除教师
void deleteTeacher(Teacher teachers[], int *numTeacher)
{
    printf("请输入要删除的教师的学号：");
    int id;
    scanf("%d", &id);

    int i;
    for (i = 0; i < *numTeacher; i++)
    {
        if (teachers[i].id == id)
        {
            break;
        }
    }

    if (i < *numTeacher)
    {
        for (int j = i; j < (*numTeacher) - 1; j++)
        {
            teachers[j] = teachers[j + 1];
        }

        (*numTeacher)--;
        printf("删除成功\n");
    }
    else
    {
        printf("查无此人\n");
    }
}

// 修改教师信息
void modifyTeacher(Teacher teachers[], int numTeacher)
{
    int i = searchTeacher1(teachers, numTeacher);
    char y[50];
    printf("修改为：");
    scanf("%s", &y);
    strcpy(teachers[i].name, y);
    printf("修改完成！");
}

// 修改教师密码
void changePassword2(Teacher teachers[], int numTeacher)
{
    int i = searchTeacher1(teachers, numTeacher);
    float key;
    printf("旧密码：%f\n", teachers[i].key);
    printf("请输入新密码：");
    scanf("%f", &key);
    teachers[i].key = key;
    printf("修改成功！");
}

// 修改学生密码
void changePassword1(Student students[], int numStudent)
{
    int i = searchStudent1(students, numStudent);
    float key;
    printf("旧密码：%f\n", students[i].key);
    printf("请输入新密码：");
    scanf("%f", &key);
    students[i].key = key;
    printf("修改成功！");
}