#include <stdio.h>
#include <stdlib.h>
#include  "ITI.h"
#define right 77
#define left 75
#define Enter  13
#define del 83
#define ins 82

#define moveR 1
#define moveL 2
#define delete 3
#define ent 4
#define insert 5
int main()
{
	char* line = (char*)malloc(10 * sizeof(char));
	char* start, * cur, * end;
	start = cur = end = line;
	char key = ' ';
	int linesize=0;
	int command = 0;
	char* i = line;
	int replacemet = 0;

	while (1) {
		key = _getch();
		if (key == -32 || key == NULL) {
			key = _getch();
		}

		switch (key) {
		case right:
			command = moveR;
			break;
		case left:
			command = moveL;
			break;
		case del:
			command = delete;
			break;
		case ins:
			command = insert;
			break;
		case Enter:
			command = ent;
		default:
			command = 0;

		}

		switch (command)
		{
		case moveR:
			if (cur != end) {
				cur++;
			}
			break;
		case moveL:
			if (cur != start) {
				cur--;
			}
			break;
		case delete:
			if (linesize != 0) {
				for (char* y = cur; y < end - 1; y++) {
					*y = *(y + 1);
				}
				end--;
				linesize--;
			}
			break;
		case insert:
			if (replacemet == 0) {
				replacemet = 1;
			}
			else
				if (replacemet == 1) {
					replacemet == 0;
				}
			break;
		default:
			if (replacemet == 0) {
				if (linesize < 10) {
					end++;
					linesize++;
					for (char* k = end - 2; k >= cur; k--) {
						*(k + 1) = *k;
					}
					*cur = key;
					cur++;
				}
			}
			else
				if (linesize != 0) {
					*cur = key;
				}
				else
					end++;
					linesize++;

			break;
		}
		system("cls");
		for (i = line; i < end; i++)
		{
			if (i == cur)
			{
				printHighlighted(*i);
			}
			else
			{
				printf("%c", *i);
			}
		}
		if (cur == end) {
			printHighlighted(" ");
		}
	}
	return 0;
}