/*
 * hmi.cpp
 *
 *  Created on: 02.03.2016
 *      Author: dehottgw
 */

#include "hmi.h"
#include <Streaming.h>

using namespace HmiNS;

Hmi::Hmi() : m_tft(6, 9, 11, 13, -1, 12), // m_tft(LCD_CS, LCD_CD, LCD_WR, LCD_RD, LCD_RESET),
		m_displayIdentifier(0),
		m_messageDrawUpdateRequired(true),
		m_alarmMessageAvailable(false)
{

	for (uint8_t i = 0; i < NUM_OF_MESSAGESLOTS; i++) {
		memset(m_messageSlots[i].header, 0, BUFFERLEN_MESSAGESLOT);
		memset(m_messageSlots[i].body, 0, BUFFERLEN_MESSAGESLOT);
		m_messageSlots[i].timestamp = 0;
	}

}

void Hmi::begin() {
	m_tft.begin();
	m_tft.setRotation(1);
	m_tft.setTextSize(2);
}

void Hmi::updateMessage() {
	m_messageDrawUpdateRequired = true;
	strcpy(m_messageSlots[0].header, "abc");
	strcpy(m_messageSlots[0].body, "123");
	strcpy(m_messageSlots[1].header, "abcdefghi");
	strcpy(m_messageSlots[1].body, "123456789");
	strcpy(m_messageSlots[2].header, "abcdefghi");
	strcpy(m_messageSlots[2].body, "123456789");
	strcpy(m_messageSlots[5].header, "abcdefghi");
	strcpy(m_messageSlots[5].body, "123456789");
}

void Hmi::updateMessage(uint8_t slot, char* header, char* body) {
	uint8_t index = slot - 1; // slots start at 1, the index starts at 0
	if (index < NUM_OF_MESSAGESLOTS) {
		strncpy(m_messageSlots[index].header, header, BUFFERLEN_MESSAGESLOT);
		strncpy(m_messageSlots[index].body, body, BUFFERLEN_MESSAGESLOT);
		m_messageSlots[index].timestamp = millis();
		m_messageDrawUpdateRequired = true;
	}
}

void Hmi::toggleAlarmState() {
	m_alarmMessageAvailable = ! m_alarmMessageAvailable;
	m_messageDrawUpdateRequired = true;
}

void Hmi::drawMessages() {
	if (m_messageDrawUpdateRequired) {
		m_messageDrawUpdateRequired = false;
		m_tft.setTextSize(2);
		m_tft.setCursor(0,0);
		if (m_alarmMessageAvailable) {
			m_tft.fillScreen(RED);
			// m_tft.invertDisplay(false);
		} else {
			m_tft.fillScreen(GREEN);
			// m_tft.invertDisplay(true);
		}
		m_tft << endl;
		for (uint8_t i = 0; i < NUM_OF_MESSAGESLOTS; i++) {
			uint8_t l = i + 1;
			if (i % 2 == 0) {
				m_tft.setTextColor(WHITE);
			} else {
				m_tft.setTextColor(YELLOW);
			}
			if (l < 10) { // prefix numbers with only one digit with a leading 0
				m_tft << " ";
			}
			m_tft << l << ": ";
			if (strlen(m_messageSlots[i].header) > 0) {
				m_tft << m_messageSlots[i].header;
				for (uint8_t spaces = 0; spaces < (BUFFERLEN_MESSAGESLOT - strlen(m_messageSlots[i].header)); spaces++) {
					m_tft << " ";
				}
				m_tft << " : " << m_messageSlots[i].body;
				m_tft << endl;
			} else {
				m_tft << endl;
			}
		}
	}
}

void Hmi::exec() {
	drawMessages();
}