player

#!/usr/bin/python3

import os
import random
import RPi.GPIO as GPIO
import smbus

from datetime import datetime
from datetime import timedelta
from pygame import mixer
from subprocess import call
from time import sleep

mediaPath = "/home/pi/gPodder/Downloads"
streamPath = "test.mp3"  # "https://detektor.fm/stream/mp3/musik/"

bus = smbus.SMBus(1)
sensorAddress = 0x70
chainPin = 24
chainOldValue = False
currentHour = 0

####
#
#   Helper
#
####

# https://thispointer.com/python-how-to-get-list-of-files-in-directory-and-sub-directories/


def ReadListOfFiles(dirName):
    listOfFile = os.listdir(dirName)
    allFiles = list()
    for entry in listOfFile:
        fullPath = os.path.join(dirName, entry)
        if os.path.isdir(fullPath):
            allFiles = allFiles + ReadListOfFiles(fullPath)
        else:
            allFiles.append(fullPath)
    # print("ReadListOfFiles, allFiles: ", allFiles)
    return allFiles


def IsNextHour():
    global currentHour
    nextHour = datetime.now().hour
    if currentHour != nextHour:
        currentHour = nextHour
        return True
    else:
        return False


def DeleteOldFilesInFolder(path, age):
    #print("DeleteOldFilesInFolder, path: ", path)
    for dirpath, dirname, filenames in os.walk(path):
        for old_file in filenames:
            curpath = os.path.join(dirpath, old_file)
            file_modified = datetime.fromtimestamp(
                os.path.getmtime(curpath))
            if datetime.now() - file_modified > timedelta(hours=age):
                # print("DeleteOldFilesInFolder, curpath: ", curpath)
                os.remove(curpath)

####
#
#   Player
#
####


def Stop():
    # print("Stop")
    mixer.music.stop()


def Play():
    # print("Play")
    mixer.music.play()


def Load(filePath):
    # print("Load", filePath)
    mixer.music.load(filePath)


def SetVolume():
    hourOfDay = datetime.now().time().hou
    # print("SetVolume hourOfDay: ", hourOfDay)
    if hourOfDay < 8 or hourOfDay > 22:
        # print("SetVolume, to 70%")
        mixer.music.set_volume(0.7)
    else:
        # print("SetVolume: 100")
        mixer.music.set_volume(0.7)


def IsPlaying():
    # print("IsPlaying")
    isPlaying = mixer.music.get_busy()
    # print("IsPlaying", isPlaying)
    return isPlaying


def PlayRadio():
    # print("PlayRadio")
    if IsPlaying() == False:
        Load(streamPath)
        Play()
    else:
        Stop()


def PlayPodcast():
    # print("PlayPodcast")
    if IsPlaying() == False:
        files = ReadListOfFiles(mediaPath)
        indexToPlay = random.randint(0, len(files)-1)
        # print("PlayPodcast, indexToPlay: ", indexToPlay)

        Load(files[indexToPlay])
        Play()


####
#
#   Podcast management
#
####

def DownloadPodcasts():
    # print("DownloadPodcasts")
    call(["gpo", "update"])
    call(["gpo", "download"])

def CleanPodcastDir():
    # print("CleanPodcastDir")
    # DeleteOldFilesInFolder(os.path.join(mediaPath, "Feinkost"), 24)
    # DeleteOldFilesInFolder(os.path.join(mediaPath, "MissionEnergiewende"), 24)
    DeleteOldFilesInFolder(os.path.join(mediaPath, "Nachrichten"), 1)
    # DeleteOldFilesInFolder(os.path.join(mediaPath, "Ombudsmann"), 24)


####
#
#   Sensors
#
####

def ReadChainSwitch():
    global chainOldValue
    chainNewValue = GPIO.input(chainPin)
    # sleep(1.0)
    if chainNewValue != chainOldValue:
        # print("ReadChainSwitch, somebody pulls the chain)"
        chainOldValue = chainNewValue
        return True
    else:
        return False

# https://www.linuxtut.com/en/8e8f385f35976dcc65e8/


def ReadUltraSonicSensor():
    bus.write_i2c_block_data(sensorAddress, 0x00, [0x51])
    sleep(0.1)
    block = bus.read_i2c_block_data(sensorAddress, 0x00, 6)
    if(block[0] == 6):
        distance = (block[2] << 8 | block[3])
    else:
        distance = (block[2] << 8 | block[3]) + block[4]
    # print("ReadUltraSonicSensor, distance: ", distance)

    if distance < 70: # and distance > 30:
        # print("ReadUltraSonicSensor, somebody sits on the toilet: ", distance)
        return True
    else:
        # print("ReadUltraSonicSensor, somebody leafs the toilet: ", distance)
        return False


####
#
#   Main
#
####

def Main():
    GPIO.setmode(GPIO.BCM)
    GPIO.setup(chainPin, GPIO.IN)

    #print("Main, starting the mixer")
    mixer.init()

    while True:
        if ReadUltraSonicSensor():
            PlayPodcast()
        elif ReadChainSwitch():
            PlayRadio()
        elif IsNextHour():
            CleanPodcastDir()
            DownloadPodcasts()

        sleep(1.0)


Main()