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

int rows, cols;

void clearInput() {
	for (int i = 0; i < cols; i ++) {
		mvprintw(rows - 1, i, " ");
	}
}

void printContent(char (*content)[cols+1]) {

	for (int i = rows - 2; i > 1; i --) {
		mvprintw(rows - i, 0, "%s", content[rows - 2 - i]);
	}
}

void insertInStartContent(char (*content)[cols+1], char* toInsert) {
	for (int i = rows; i > 0; i --) {
		strcpy(content[i], content[i - 1]);
	}
	strcpy(content[0], toInsert);
}

int main (int argc, char* argv[]) {
	initscr();
	// cbreak();
	keypad(stdscr, TRUE);
	
	noecho();
	char ch = ' ';
	int len = 0;

	char (*content)[cols+1] = malloc(sizeof(char[rows][cols+1]));

	for (int i = 0; i < rows; i ++) {
		strcpy(content[i], " ");
	}

	getmaxyx(stdscr, rows, cols);
	
	while (ch = getch()){
		switch (ch) {
			case 10:
				char* toInsert = malloc(cols+1);
				mvscanw(rows - 1, 0, "%s", toInsert);
				insertInStartContent(content, toInsert);
				len = 0;
				clearInput(rows, cols);
				refresh();
			break;
			default:
				mvprintw(rows - 1 , len, "%c", ch);
				len ++;
			break;
		}
		printContent(content);
		mvprintw(rows - 1, len, "");
		refresh();

	}
	
	endwin();	
	return 0;
}