import config
import logging
import mqtt
import report
import select
from systemd import journal


try:
    from config import APP_NAME as ROOT_LOGGER_NAME
except ImportError:
    ROOT_LOGGER_NAME = 'root'
logger = logging.getLogger(ROOT_LOGGER_NAME).getChild('main')


PLAY = "New A2DP transport"
STOP = "Closing A2DP transport"

def send_state_msg_mqtt(mc, state):
    topic = config.MQTT_TOPIC + "/state"
    logger.info("Sending BT-Audio status information to mqtt %s = %s", topic, str(state))
    mc.send(topic, "true" if state else "false")

def send_title_msg_mqtt(mc, title):
    topic = config.MQTT_TOPIC + "/title"
    logger.info("Sending BT-Audio status information to mqtt %s = %s", topic, title)
    mc.send(topic, title)


if __name__ == "__main__":
    report.stdoutLoggingConfigure(((config.APP_NAME, config.LOGLVL), ), fmt=config.formatter)

    mc = mqtt.mqtt_client(config.APP_NAME, config.MQTT_SERVER, 1883, config.MQTT_USER, config.MQTT_PASS)

    j = journal.Reader()
    j.log_level(journal.LOG_INFO)
    j.add_match(_SYSTEMD_UNIT="bluealsa.service")

    j.seek_tail()
    j.get_next()

    playing = False
    send_state_msg_mqtt(mc, playing)
    while True:
        while j.get_next():
            for entry in j:
                if entry['MESSAGE'] != "":
                    if playing:
                        if STOP in entry['MESSAGE']:
                            playing = False
                            send_state_msg_mqtt(mc, playing)
                    else:
                        if PLAY in entry['MESSAGE']:
                            playing = True
                            send_state_msg_mqtt(mc, playing)
                    logger.debug(str(entry['__REALTIME_TIMESTAMP'] )+ ' ' + entry['MESSAGE'])