#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 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 printContent(char (*content)[cols+1]) {
	for (int i = rows - 2; i > 1; 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);
}

int main (int argc, char* argv[]) {
	initscr();
	cbreak();
	keypad(stdscr, TRUE);
	noecho();
	
	char ch = ' ';
	int len = 0;
	char* cmd_string = malloc(cols);
	char (*content)[cols] = malloc(sizeof(char[rows][cols+1]));

	for (int i = 0; i < rows; i ++)
		memset(content[i],0,sizeof(content[i]));

	getmaxyx(stdscr, rows, cols);
	
	while (ch = getch()){
		switch (ch) {
			case 10: {
				FILE* f = fopen("test.txt","w");
				fprintf(f, "test: %s", cmd_string);
				fclose(f);
				insertInStartContent(content, cmd_string);
				len = 0;
				clearInput(rows, cols);
				memset(cmd_string,0,cols * sizeof(char));
				refresh();
				printContentIntoAFile(content);
			break;
			}
			default:
				mvprintw(rows - 1 , len, "%c", ch);
				cmd_string[len] = ch;
				len ++;
			break;
		}
		printContent(content);
		mvprintw(rows - 1, len, "");
		refresh();

	}
	
	endwin();	
	return 0;
}