## Python Script-Along: Download Podcasts to an MP3 Player 
## at Iffy Books | 404 S. 20th St., PHL | iffybooks.net

#!/usr/bin/env python3

# Debian-based Linux
#apt-get install python3
#apt-get install wget

# macOS
#brew install python3
#brew install wget

#python3 -m pip install --user --break-system-packages lxml
#python3 -m pip install --user --break-system-packages requests

import requests
import subprocess
import os
from lxml import etree

download_directory = os.path.expanduser("~/Desktop/MP3_PLAYER/")
os.chdir(download_directory)

print("Downloading files to ...")
print(download_directory)

print("Current files ...")
for filename in os.listdir('./'):
    print("• " + filename)
    
#input("!!! Press ENTER to delete ALL files in the MP3_PLAYER directory and download new ones. !!!")

#files_to_delete = [filename for filename in os.listdir() if not filename.startswith('.')]
#files_to_delete = [filename for filename in files_to_delete if filename!='Podcast_MP3_Player_Downloader.py']
#for filename in files_to_delete:
#    print(filename)
#    os.remove(filename)
#    print("Deleted " + filename)

## Download BBC Global News Podcast RSS file

url = "https://podcasts.files.bbci.co.uk/p02nq0gn.rss"

query_parameters = {"downloadformat": "xml"}

response = requests.get(url, params=query_parameters)


## Parse XML and get first MP3 link

root = etree.fromstring(bytes(response.text, encoding='utf8'))

mp3_urls = root.xpath('//enclosure/@url')

first_mp3_url = mp3_urls[0]


## Download file with wget

subprocess.call(['wget', '-N', first_mp3_url])


## Download Democracy Now Podcast RSS file

url = "https://www.democracynow.org/podcast.xml"

subprocess.call(['wget',url])

with open('podcast.xml') as fi:
    html_string = fi.read()


## Parse XML and get first MP3 link (specific to BBC RSS files)

root = etree.fromstring(bytes(html_string, encoding='utf8'))

mp3_urls = root.xpath('//enclosure/@url')

first_mp3_url = mp3_urls[0]


## Download file with wget

subprocess.call(['wget', '-N', first_mp3_url])