Spodcast
Spodcast is a caching Spotify podcast to RSS proxy. Using Spodcast you can follow Spotify-hosted netcasts/podcasts using any player which supports RSS, thus enabling the use of older hardware which is not compatible with the Spotify (web) app. Spodcast consists of the main Spodcast application - a Python 3 command line tool - and a PHP-based RSS feed generator. It uses the librespot-python library to access the Spotift API. To use Spodcast you need a (free) Spotify account. Spodcast only supports the Spotify podcast service, it does not interface with the music streaming service.
How does it work
Spotify hosts podcasts through their proprietary API and does not offer an RSS feed, making it mandatory to use the Spotify (web) app to follow these shows. This makes it impossible to follow Spotify-hosted shows on any device which does not support the Spotify (web) app. Spodcast solves this problem by creating an RSS feed out of data returned through the Spotify podcast API. This feed can be served by any web server which supports PHP. By running Spodcast through a task scheduler (cron on *nix, Task Scheduler on Windows) the feed will be kept up to date without the need for intervention. Have a look at these glorious ASCIIGraphs™ which should answer all unasked questions:
Spodcast regularly queries Spotify for new episodes...
--------------
|task scheduler|
--------------
| ___________
------- APIv1 ----V--- / \
|Spotify|- - - - >|Spodcast|------>| File system |
------- -------- \___________/
You want to listen to an episode using your old, unsupported but still functional phone...
_____ ............
___________ ---------- | | . o O |bla bla bla.|
/ \ |Web server| RSS | YOUR| ````````````
| File system |------>| + PHP |------>| OLD |
\___________/ ---------- |PHONE|
|_____|
Thus, by the simple expedient of using a piece of code which produces another piece of code which is used by yet another piece of code to speak to that old, creaky but still functional phone the latter is saved from early forced retirement. You can both feel virtuous for not adding another piece of waste to the pile, provident for not spending funds on a new device which does the same as the old one, smart for escaping the trap of planned obsolescence and whatever other emotion you prefer, including none whatsover.
Installation
Spodcast can be installed from source by running pip install . from within the package root directory:
$ git clone https://github.com/Yetangitu/spodcast.git
$ cd spodcast
$ pip install .
Once installed this way it can be uninstalled using pip uninstall spodcast if so required. If you're planning to use the RSS proxy and web UI you need to make sure the spodcast command is available to the web server user.
Usage
To use Spodcast you need a (free) Spotify account, if you don't have one yet you'll need to take care of that first at https://www.spotify.com/signup/ . If you plan to use the RSS proxy feature you'll also need a web server to serve the RSS feed(s), any server which supports PHP will do here. See Web server requirements for more information on how to configure the server.
Here's spodcast displaying its help message:
$ spodcast -h
usage: spodcast [-h] [-c CONFIG_LOCATION] [-p] [-l LOGIN] [--root-path ROOT_PATH]
[--skip-existing SKIP_EXISTING] [--retry RETRY]
[--max-episodes MAX_EPISODES] [--chunk-size CHUNK_SIZE]
[--download-real-time DOWNLOAD_REAL_TIME] [--language LANGUAGE]
[--credentials-location CREDENTIALS_LOCATION] [--rss RSS]
[--log-level LOG_LEVEL]
[urls ...]
A caching _Spotify_ podcast to RSS proxy.
positional arguments:
urls Download podcast episode(s) from a url. Can take multiple urls.
optional arguments:
-h, --help show this help message and exit
-c CONFIG_LOCATION, --config-location CONFIG_LOCATION
Specify the spodcast.json location
-p, --prepare-feed Installs RSS feed server code in ROOT_PATH.
-l LOGIN, --login LOGIN
Reads username and password from file passed as argument and stores
credentials for later use.
--root-path ROOT_PATH
set root path for podcast cache
--skip-existing SKIP_EXISTING
skip files with the same name and size
--retry RETRY retry count for _Spotify_ API access
--max-episodes MAX_EPISODES
number of episodes to download
--chunk-size CHUNK_SIZE
download chunk size
--download-real-time DOWNLOAD_REAL_TIME
simulate streaming client
--language LANGUAGE preferred content language
--credentials-location CREDENTIALS_LOCATION
path to credentials file
--rss RSS add a (php) RSS feed server and related metadata for feed. To serve
the feed, point a web server at the spodcast root path as configured
using --root-path.
--log-level LOG_LEVEL
log level (debug/info/warning/error/critical)
Using Spodcast to proxy Spotify podcasts to RSS
The following example shows how to use the spodcast command to prepare the feed root directory and add a Spotify account to be used. It specifies the configuration file to create (-c /mnt/audio/podcast/spodcast.json) and the root path where podcasts will be downloaded to (--root-path /mnt/audio/spodcast). The -p option tells spodcast to prepare the RSS feed server in the root directory which will also be used to store the credential file created by the -l spotify.rc command. That spotify.rc file is a plain text file containing the username and password (separated by a single space character) to use to login to Spotify. It is only needed to create the stored credentials file(s) so it can be deleted once Spotcast is up and running.
spodcast -c /mnt/audio/podcast/spodcast.json --root-path /mnt/audio/spodcast -p -l /home/exampleuser/spotify.rc
Configure the Web server using the path given as root path (in this example that would be /mnt/audio/spodcast) as web root, making sure to exclude files with .json and .info extenstions to avoid leaking your Spotify credentials (even though these are stored in hashed form using hashed file names). Now point a browser at the site you configured for Spodcast and you're ready to add the first show or episode. This is done easily by entering the Spotify show/episode url (e.g. https://open.spotify.com/show/4rOoJ6Egrf8K2IrywzwOMk for The Joe Rogan Experience for the whole show, https://open.spotify.com/episode/2rYwwE7hcpgsDo9vRVHxAI?si=24fb00294b7f40db for a specific episode, notice the show and episode parts of these links) and either hitting Enter or clicking the Add button. Spodcast will now create a directory under the given root path, add the .index.php RSS feed generator script and the index.info show info URL used by that script and the RSS manager script and whatever episode(s) you decided to sync.
Once the initial feed has been created it can be kept up to date by enabling the feed update service found in the Settings menu. Select the update frequency and the start time and click Update, this will create a cron job for the web server which will run the Spodcast manager script to update feeds. While the update frequency is configured for all shows simultaneously this is not the case for the number of episodes to sync and the number to keep in cache, these can be configured individually for each show. The idea here is that some shows may publish more than one episode between update intervals so by fetching the last X episodes on each update nothing will be missed. Episodes which have already been synced will not be synced again so no time or bandwidth is wasted. In the same vein the number of episodes to keep can be configured to make sure your RSS clients have the opportunity to download these before they are rotated out of cache. Once more than X (being the value chosen for keep) episodes have been downloaded the oldest episodes will be deleted to keep the total no more than X.
Point your RSS clients at the Spodcast feed URL for this show and you should see new episodes appear after they were published on Spotify and subsequently picked up on the next update. For the example given in the Web server requirements example that URL would be http://spodcast.example.org/The_Joe_Rogan_Experience.
Here's what the Spodcast feed manager looks like:
...and on smaller screens it looks like this:
The settings screen is simple and concise:
Each show has its own sync and keep settings. Use the Delete button to, well, delete the show. Use Refresh to retrieve the last [sync] episodes, skipping those which have already been synced.
Using the Spodcast CLI command to download a single episode
Spodcast can also be used stand-alone (without the need for a web server) by either just ignoring the feed-related files (.index.php, index.info plus a *.info file for every episode) or by disabling the RSS feed using --rss no on the command line. Instead of using the -l spotify.rc command to add Spotify credentials it is possible to point Spotcast at a single credentials.json file (which will be created if it does not exist yet), spotcastwil ask for the username and password when needed. To get single episode links use the _Spotify_ web app and select _Share->Copy Episode Link_ from the episode menu (three dots in the top-right corner of the episode block). The following example shows (an already configured instance of)spodcast` ready to download a single episode:
spodcast -c ~/.config/spodcast/spodcast.json --credentials-location ~/.config/spodcast/credentials.json --rss no https://open.spotify.com/episode/2rYwwE7hcpgsDo9vRVHxAI?si=24fb00294b7f40db
Like in the previous example Spodcast will create a directory under the root path with the same name as the show from which the episode is downloaded. The episode will be downloaded into this directory under a SHOW_NAME_-__EPISODE_NAME.[ogg|mp3] name. Point a mediaplayer of choice at this file to play the episode. In "manual" mode Spodcast does not do anything by itself, feeds can be kept up to date by running Spotcast with the required settings for --max-episodes (which is the value used for sync in the web UI) and the show URL. Here's how to update the The Joe Rogan Experience show using the spodcast CLI command, syncing the last 3 episodes:
spodcast -c ~/.config/spodcast/spodcast.json --rss no --max-episodes 3 https://open.spotify.com/show/4rOoJ6Egrf8K2IrywzwOMk`
Web server configuration
Spodcast places a hidden .index.php file in the root path and each show directory. The one in the root directory is used to manage feeds while those in the show directories produce RSS feeds based on the information found in all *.info files in that directory. Configure the server to serve those .index.php files as index to make things work as intended. Don't forget to block all web access to files ending in .json and .info to make sure you Spotify credentials (which are stored in hashed form in files named spodcast-cred-MD5_HASH_OF_SPOTIFY_USER_NAME.json in the root path) can not be accessed. For nginx the following should suffice to produce an unencrypted (HTTP) feed under the domain name spodcast.example.org given a feed root directory (as configured using --root-path) of /mnt/audio/spodcast with php-fpm 7.4 listening on unix:/run/php/php7.4-fpm.sock:
server {
listen 80;
listen [::]:80;
server_name spodcast.example.org;
root /mnt/audio/spodcast;
index .index.php;
# these files should not be accessible
location ~\.(json|info)$ {
deny all;
return 404;
}
location / {
try_files $uri $uri/ =404;
}
location ~ \.php$ {
include snippets/fastcgi-php.conf;
fastcgi_pass unix:/run/php/php7.4-fpm.sock;
}
}
Examples for other web servers can be found elsewhere, this is basically a default PHP configuration with the only difference being that .index.php is a hidden file.
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