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

#include <common/ipc.cpp>
#include <common/socket.cpp>
#include <client/window.cpp>
#include <client/cursor.cpp>

#define NORMAL_MODE 0
#define INSERT_MODE 1

Socket io;
Window window;
Cursor cursor(window);

void update() {
	int8_t msg[5];
	msg[0] = OP_SHOW;
	encode2(window.width, msg, 1);
	encode2(window.height, msg, 3);
	io.send(msg, 5);
	io.recv(window.view, window.width * window.height);
	io.recv(window.line_ends, window.height);

	window.update();
	cursor.update();
}

void move_left() {
	int8_t mov[2];
	mov[0] = OP_MOVE1;
	mov[1] = -1;
	io.send(mov, 2);
	cursor.move_left();
}

void move_right() {
	int8_t mov[2];
	mov[0] = OP_MOVE1;
	mov[1] = 1;
	io.send(mov, 2);
	cursor.move_right();
}

void delete_element() {
	int8_t del;
	del = OP_DELETE;
	io.send(&del, 1);
	cursor.move_left();
}

void insert_element(int input) {
	int8_t ins[2];
	ins[0] = OP_INSERT;
	ins[1] = input;
	io.send(ins, 2);
	cursor.move_right();
}

int main(int argc, char *argv[]) {
	io.connect();

	int mode = NORMAL_MODE;
	int quit = 0;
	while (!quit) {
		update();

		int input = window.get_input();
		if (mode == NORMAL_MODE) {
			switch (input) {
				case '':
					quit = 1;
					break;
				case 'i':
					mode = INSERT_MODE;
					break;
				case 'h':
					move_left();
					break;
				case 'l':
					move_right();
					break;
			}
		} else {
			switch (input) {
				case '':
					mode = NORMAL_MODE;
					break;
				case KEY_BACKSPACE:
					delete_element();
					break;
				default:
					insert_element(input);
			}
		}
	}

	return 0;
}