#include <cstdio>
#include <cstring>
#include <cstdlib>
#include <string>
#include <vector>
#include <algorithm>
#include <conio.h>
using namespace std;

void ClearScreen()
{
    system("cls");
}

char GetUserInput()
{
    fflush(stdin);
    return getch();
}

string GetUserLine()
{
    char buff[1024];
    memset(buff,0,1024);
    fflush(stdin);
    gets(buff);
    return string(buff);
}

string projectname;

struct SelectionInfo
{

};

struct PageInfo
{
    string title;
    vector<string> contextline;
};

vector<PageInfo*> pagevec;

#define CASE_Q case 'Q':case 'q'
#define CASE_W case 'W':case 'w'
#define CASE_E case 'E':case 'e'
#define CASE_A case 'A':case 'a'
#define CASE_S case 'S':case 's'
#define CASE_D case 'D':case 'd'
#define CASE_Z case 'Z':case 'z'
#define CASE_X case 'X':case 'x'
#define CASE_C case 'C':case 'c'

void EditorSetPageTitle(PageInfo* p)
{
    ClearScreen();
    printf("请输入新的标题...\n");
    string newtitle=GetUserLine();
    if(newtitle.empty())
    {
        printf("你输入了空内容,这表明:\n"
               "Q 清空标题\n"
               "W 不改变标题\n");
        switch(GetUserInput())
        {
CASE_Q:
            p->title.clear();
            break;
CASE_W:
            return;
        }
    }
    else
    {
        p->title=newtitle;
    }
}

void EditorSetPageContext(PageInfo* p)
{
    ClearScreen();
    printf("请输入页面内容,将#放在单独一行表示输入结束.\n");
    vector<string> newcontextline;
    string temp;
    while(1)
    {
        temp=GetUserLine();
        if(temp.size()==1&&temp.at(0)=='#') break;
        newcontextline.push_back(temp);
    }
    if(newcontextline.empty())
    {
        printf("你输入了空内容,这表明:\n"
               "Q 清空内容\n"
               "W 不改变内容\n");
        switch(GetUserInput())
        {
CASE_Q:
            p->contextline.clear();
            break;
CASE_W:
            return;
        }
    }
    else
    {
        p->contextline=newcontextline;
    }
}

void EditorPagePreview(PageInfo* p)
{
    ClearScreen();
    printf("%s\n",p->title.c_str());
    for(auto& str:p->contextline)
    {
        printf("%s\n",str.c_str());
    }

    printf("\n\n=====================\n");
    printf("按下任意键返回\n");
    GetUserInput();
}

void EditorEditPage(PageInfo* p)
{
    while(1)
    {

        ClearScreen();
        printf("项目 - %s - 创建新页面\n",projectname.c_str());
        printf("选项\n"
               "Q 设置标题\n"
               "W 设置内容\n"
               "E 添加按钮\n"
               "A 查看按钮列表\n"
               "S 删除此页面\n"
               "D 浏览此页面\n"
               "Z 返回\n"
              );
        switch(GetUserInput())
        {
CASE_Q:
            EditorSetPageTitle(p);
            break;
CASE_W:
            EditorSetPageContext(p);
            break;
CASE_D:
            EditorPagePreview(p);
            break;
            CASE_Z:
                return;
        }
    }
}

void EditorViewPages()
{
    while(1)
    {
        ClearScreen();
        printf("======\n页面序号 标题\n======\n");

        size_t sz=pagevec.size();
        for(size_t i=0;i<sz;i++)
        {
            printf("%u ",i);
            if(pagevec.at(i)->title.empty())
            {
                printf("(无标题)\n");
            }
            else
            {
                printf("%s\n",pagevec.at(i)->title.c_str());
            }
        }

        printf("-------\n");
        printf("Q 删除页面 W 返回\n");
        switch(GetUserInput())
        {
        CASE_Q:
            break;
        CASE_W:
            return;
        }
    }
}

PageInfo* EditorCreateNewPage()
{
    PageInfo* pinfo=new PageInfo;
    pagevec.push_back(pinfo);
    return pinfo;
}

void EditorNewProject()
{
    ClearScreen();
    printf("请输入项目标题,留空返回...\n");
    string name=GetUserLine();
    if(name.empty()) return;
    projectname=name;

    while(1)
    {
        ClearScreen();
        printf("项目 - %s \n",projectname.c_str());
        printf("选项\n"
               "Q 创建新的页面\n"
               "W 浏览已有页面\n"
               "E 关闭项目\n"
              );
        switch(GetUserInput())
        {
        case 'Q':
        case 'q':
            EditorEditPage(EditorCreateNewPage());
            break;
        case 'W':
        case 'w':
            EditorViewPages();
            break;
        case 'E':
        case 'e':
            return;
        }
    }

}

void EditorMain()
{
    bool running=true;
    while(running)
    {
        ClearScreen();
        printf("选项\n"
               "Q 新建工程\n"
               "W 退出Editor\n"
              );
        char c=GetUserInput();
        switch(c)
        {
        case 'Q':
        case 'q':
            EditorNewProject();
            break;
        case 'W':
        case 'w':
            running=false;
            break;

        }
    }
}

int main()
{
    printf("启动ConsoleUI Editor...\n");
    EditorMain();
    printf("关闭ConsoleUI Editor...\n");
    return 0;
}