#include <ncurses.h>
#include <string.h>
typedef struct _win_border_struct {
    chtype  ls, rs, ts, bs,
        tl, tr, bl, br;
}WIN_BORDER;

typedef struct _WIN_struct {
    char name[20];
    int startx, starty;
    int height, width;
    WIN_BORDER border;
}WIN;

void init_con_params(WIN *p_win);
void print_win_params(WIN *p_win);
void create_box(WIN *win, bool flag);
void resize_win(WIN *p_win);
int main(int argc, char *argv[])
{

    WIN contacts;
    strcpy(contacts.name,  "contacts");
    WIN write;
    strcpy(write.name, "write");
    WIN conversation;
    strcpy(conversation.name, "conversation");
    int ch;

    initscr();
    start_color();
    cbreak;

    keypad(stdscr, TRUE);
    noecho();
    init_pair(1, COLOR_CYAN, COLOR_BLACK);

    //init window stuff
    init_con_params(&conversation);
    print_win_params(&conversation);

    attron(COLOR_PAIR(1));
    printw("Press F1 to close");
    refresh();
    attroff(COLOR_PAIR(1));

    create_box(&conversation, TRUE);
    while((ch = getch()) != KEY_F(1))
    {
        resize_win(&conversation);
        refresh();
        switch(ch)
        {case KEY_LEFT:
            create_box(&conversation,FALSE);
            --conversation.startx;
            create_box(&conversation,TRUE);
            break;
         case KEY_RIGHT:
            create_box(&conversation,FALSE);
            ++conversation.startx;
            create_box(&conversation,TRUE);
            break;
        case KEY_UP:
            create_box(&conversation,FALSE);
            --conversation.starty;
            create_box(&conversation,TRUE);
            break;
        case KEY_DOWN:
            create_box(&conversation,FALSE);
            ++conversation.starty;
            create_box(&conversation,TRUE);
            break;
        }}
endwin();
return 0;
}
void resize_win(WIN *p_win){
    if (strcmp("conversation",p_win->name) ==0){
        p_win->height = LINES -4;
        p_win->width = COLS -12;
    }
    create_box(p_win,FALSE);
    create_box(p_win,TRUE);


}
void init_con_params(WIN *p_win){
    p_win->height = LINES -4;
    p_win->width = COLS -12;
    p_win->starty = 0;
    p_win->startx = 0;

    p_win->border.ls = '|';
    p_win->border.rs = '|';
    p_win->border.ts = '|';
    p_win->border.bs = '|';
    p_win->border.tl = '+';
    p_win->border.tr = '+';
    p_win->border.bl = '+';
    p_win->border.br = '+';
}

void print_win_params(WIN *p_win)
{
#ifdef _DEBUG
    mvprintw(25, 0, "%d %d %d %d", p_win->startx, p_win->starty,
            p_win->width,p_win->height);
    refresh();
#endif
}

void create_box(WIN *p_win, bool flag)
{   int i,j;
    int x, y, w, h;

    x = p_win->startx;
    y = p_win->starty;
    w = p_win->width;
    h = p_win->height;

    if(flag == TRUE)
    {
        mvaddch(y,x, p_win->border.tl);
        mvaddch(y, x+w, p_win->border.tr);
        mvaddch(y+h, x, p_win->border.bl);
        mvaddch(y+h, x+w, p_win->border.br);
        mvhline(y,x+1, p_win->border.ts, w-1);
        mvhline(y+h, x+1, p_win->border.bs, w-1);
        mvvline(y+1, x, p_win->border.ls, h-1);
        mvvline(y+1, x+w, p_win->border.ls, h-1);
    }
    else
        for(j=y;j <= y + h; ++j)
            for(i = x; i<= x +w;++i)
                mvaddch(j,i,' ');
    refresh();
}