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

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

using namespace HmiNS;

Hmi::Hmi() : m_tft(TFT_CS, TFT_DC, TFT_MOSI, TFT_SCLK, TFT_RST, TFT_MISO), // m_tft(LCD_CS, LCD_CD, LCD_WR, LCD_RD, LCD_RESET),
		m_ctp(),
		m_backLightPin(TFT_BACKLIGHT),
		m_backLightEnable(true),
		m_displayIdentifier(0),
		m_alarmMessageAvailable(false),
		m_seconds(0),
		m_lightOn(LIGHT_ON),
		m_lightOff(LIGHT_OFF)
{

	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;
		m_messageSlots[i].updateRequired = false;
	}

}

void Hmi::begin() {
	pinMode(5, OUTPUT);
	digitalWrite(5, HIGH);

	m_tft.begin();
	m_tft.setRotation(1);
	m_tft.setTextSize(2);
	m_tft.fillScreen(BLACK);

	if (! m_ctp.begin(40)) {  // pass in 'sensitivity' coefficient
		Serial.println("Couldn't start FT6206 touchscreen controller");
	    while (1);
	 }

}

void Hmi::clear() {
	m_tft.fillScreen(BLACK);
}

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_messageSlots[index].updateRequired = true;
	}
}

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

void Hmi::drawMessages() {
	for (uint8_t i = 0; i < NUM_OF_MESSAGESLOTS; i++) {
		if (m_messageSlots[i].updateRequired) {
			m_messageSlots[i].updateRequired = false;
			m_tft.setCursor(0, 5+i*22);
			m_tft.fillRect(0, 5+i*22, 320, 22, BLACK);
			uint8_t l = i + 1;
			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::setSeconds(uint32_t seconds) {
	m_seconds = seconds;
}

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

	static uint32_t oldSeconds = 0;
	if (m_seconds != oldSeconds) {
		oldSeconds = m_seconds;
		Serial << "LIGHT_OFF: " << m_lightOff << endl;
		Serial << "LIGHT_ON: " << m_lightOn << endl;
		Serial << "enable: " << m_backLightEnable << endl;
		Serial << "Seconds: " << m_seconds << endl;
	}

	if (((m_seconds > m_lightOff) || (m_seconds < m_lightOn)) && !m_ctp.touched() && m_backLightEnable) {
		m_backLightEnable = false;
		digitalWrite(m_backLightPin, LOW);
		Serial << "lights off" << endl;
	}

	if ((((m_seconds < m_lightOff) && (m_seconds > m_lightOn)) || m_ctp.touched()) && !m_backLightEnable) {
		m_backLightEnable = true;
		digitalWrite(m_backLightPin, HIGH);
		Serial << "lights on" << endl;
	}
}