#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, " ");
	attron(A_BLINK);
	mvprintw(rows - 1, 0, " ");
	attroff(A_BLINK);
}

//void printContentIntoAFile(char (*content)[cols+1]) {
//	FILE* f = fopen("content.txt", "w");
//	for (int i = 0; i < rows - 2; i ++)
//		fprintf(f, "%s\n", content[i]);
//	fclose(f);
//}

void printPrompt(char* prompt) {
	mvprintw(rows - 1, 0, "%s", prompt);
}

void clearScreen() {
	for (int i = 0; i < rows; i ++)
			for (int j = 0; j < cols; j ++) 
				mvprintw(i, j, " ");
}

void printContent(char (*content)[cols+1]) {	
	for (int i = rows - 2; i > 0; i --)
		mvprintw(i, 0, "%s", content[rows - 2 - i]);
}

void insertInStartContent(char (*content)[cols+1], char* toInsert) {
	for (int i = rows - 2; i > 0; i --)
		strcpy(content[i], content[i - 1]);
	strcpy(content[0], toInsert);
}

//void printStringIntoAFile(char* string) {
//	FILE* f = fopen("string.txt", "w");
//	fprintf(f, "%s\n", string);
//	fclose(f);
//}

int main (int argc, char* argv[]) {
	initscr();
	cbreak();
	keypad(stdscr, TRUE);
	noecho();
	start_color();

	getmaxyx(stdscr, rows, cols);
	
	char ch = ' ';
	int len = 0;
	char cmd_string[cols];

	memset(cmd_string, '\0', cols);
	char content[rows][cols];
	for (int i = 0; i < rows; i ++)
		memset(&(content[i]),'\0', cols);

	while (ch = getch()){
		switch (ch) {
			case 10: {
				insertInStartContent(content, cmd_string);
				len = 0;
				memset(cmd_string, '\0', cols);
			break;
			}
			default:
				cmd_string[len] = ch;
				len ++;
			break;
		}
		clearScreen();
		printContent(content);
		printPrompt(cmd_string);
		refresh();

	}
	
	endwin();	
	return 0;
}