#include "admin.h"
#include <string.h>

void admin_BOOK_menu(int choice)
{
    system("cls");
    showtitle();
    Settitle("|学生选课系统|管理员功能菜单|");
    in_BOOK();
    char o[8][30] = {"浏 览 现 有 课 程 信 息","选 课 与 退 课","修 改 课 程 信 息","删 除 课 程","新 增 课 程","全部用户信息","修改用户密码","修改当前密码"};
    int i,j = 0;
    for(i = 0; i < 8;i++)
    {
        if(choice == i)
            setcolor(0,15);
        setposition(LB+21,START+i);
        printf("%s",o[j++]);
        setcolor(11,0);
    }
    if(choice == 8)
        setcolor(0,15);
    setposition(LB+50,START+i-1);
    printf("退出登陆");
    setcolor(11,0);
    strcpy(book1,ADMIN.book1);
    strcpy(book2,ADMIN.book2);
    strcpy(book3,ADMIN.book3);
    booknum = ADMIN.booknum;
    if(strcmp(book1,"o") == 0) book1[0] = 0;
    if(strcmp(book2,"o") == 0) book2[0] = 0;
    if(strcmp(book3,"o") == 0) book3[0] = 0;
    setposition(LB,INFO+1);
    printf("已选课程:%s  %s  %s",book1,book2,book3);
    setposition(LB,INFO+2);
    printf("(%d/3)",ADMIN.booknum);
}

void admin_BOOK_choice()
{
    system("cls");
    showtitle();
    int choice = 0;
    while(1)
    {
        admin_BOOK_menu(choice);
        setposition(19,12);
        printf("输入“↑”、“↓”“←”“→”,回车键确认");
        HideCursor();
        char a,b;
        b = getch();
        if(b==-32)
        a = getch();
        fflush(stdin);
        if(a == UP && b == -32)
        {
            choice--;
        }
        else if(a == DOWN && b == -32)
        {
            choice++;
        }
        else if(a == LEFT && b == -32 && choice == 8)
        {
            choice--;
        }
        else if(a == LEFT && b == -32 && choice != 8)
        {
            choice = 8;
        }
        else if(a == RIGHT && b == -32 && choice == 8)
        {
            choice = 7;
        }
        else if(a == RIGHT && b == -32 && choice != 8)
        {
            choice = 8;
        }
        else if(b==13)
        {
            in();
            if(choice == 0)  conshow_BOOK_choice(1);
            if(choice == 1)  borrowandreturn_BOOK_choice(1);
            if(choice == 2)  alter_BOOK();
            if(choice == 3)  del_BOOK();
            if(choice == 4)  newone_BOOK();
            if(choice == 5)  showall();
            if(choice == 6)  change_user_all();
            if(choice == 7)  change_admin_password();
            if(choice == 8)  login1();
            break;
        }
        else{
            setposition(19,12);
            printf("输入“↑”或“↓”,回车键确认");
        }
        if(choice<0) choice = 8;
        if(choice>8) choice = 0;
    }
}

void admin_BOOK_info()
{
    Settitle("|学生选课系统|管理员功能菜单|");
    system("cls");
    showtitle();
    setposition(LB+5,START+1);
    printf("管 理 员 功 能 提 示 ：");
    setposition(LB+5,START+2);
    printf("输入所有信息长度超过20字符将自动省略超过部分");
    setposition(LB+5,START+3);
    printf("录入任何信息若包含空格将自动省略第一个空格及其后面部分");
    setposition(LB+5,START+4);
    printf("一次只能新增一门课，若要修改数量请使用修改功能");
    setposition(LB+5,START+5);
    printf("最多选三门课");
}

void admin_save()
{
    if((FP_ADMIN = fopen(ADMIN.id,"w"))==NULL)
    {
        system("cls");
        printf("\n\n\t未知错误");
        system("pause");
        exit(0);
    }
    fprintf(FP_ADMIN,"%s %s %s %s %d ",ADMIN.pass,ADMIN.book1,ADMIN.book2,ADMIN.book3,ADMIN.booknum);
    if(fclose(FP_ADMIN))
    {
        system("cls");
        printf("\n\t*————*");
        printf("\n\t*未知错误*");
        printf("\n\t*————*");
        system("pause");
        exit(0);
    }
}

void change_admin_password()
{
    admin_menu_info();
    Settitle("|学生选课系统|管理员功能|修改管理员密码|");
    setposition(LB,INFO);
    printf("原密码：");
    char pass[20];
    fflush(stdin);
    scanf("%s",pass);
    fflush(stdin);
    setposition(LB,INFO+1);
    if(strcmp(pass,ADMIN.pass) == 0)
    {
        printf("输入新密码：");
        scanf("%s",pass);
        char apass[20];
        setposition(LB,INFO+2);
        printf("确认新密码：");
        scanf("%s",apass);
        setposition(LB,INFO+3);
        if(strcmp(apass,pass) == 0)
        {
            strcpy(ADMIN.pass,pass);
            printf("修改成功！");
        }
        else
        {
            printf("两次输入的密码不一致！");
        }
    }
    else{
        printf("原密码错误！");
    }
    admin_save();
    admin_BOOK_choice();
}
void change_user_all()
{
    admin_menu_info();
    Settitle("|学生选课系统|管理员功能|修改用户密码|");
    ID();
    setposition(LB,INFO+3);
    printf("输入新密码：");
    char pass[20];
    scanf("%s",pass);
    if(strlen(pass) < 6)
    {
        setposition(LB,INFO+2+2);
        printf("密码长度过短！");
        setposition(LB,INFO+3+2);
        system("pause");
        admin_BOOK_choice();
    }
    char apass[20];
    setposition(LB,INFO+2+2);
    printf("确认新密码：");
    scanf("%s",apass);
    setposition(LB,INFO+3+2);
    if(strcmp(apass,pass) == 0)
    {
        strcpy(change->pass,pass);
        printf("修改成功！");
    }
    else
    {
        printf("两次输入的密码不一致！");
    }
    save();
    admin_BOOK_choice();
}

void admin_menu_info()
{
    Settitle("|学生选课系统|管理员功能菜单|修改功能|");
    system("cls");
    showtitle();
    setposition(LB+5,START+1);
    printf("管 理 员 修 改 功 能 提 示 ：");
    setposition(LB+5,START+2);
    printf("输入所有信息长度超过20字符将自动省略超过部分");
    setposition(LB+5,START+3);
    printf("录入任何信息若包含空格将自动省略第一个空格及其后面部分");
    setposition(LB+5,START+4);
    printf("管理员密码不能为空，用户密码不能少于6位");
}