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Fixing a Patreon feed's cover artwork

Antennapod With the recent Pocketcast PR blunder I finally decided to jump back to open source Antennapod. This has been painless especially with the introduction of the Remove silence feature, the main feature that kept me with Pocketcasts for so long.

The only issue I had was a Private feed with broken cover artwork, this was frustrating but it looks to be an issue on Patreons end. Thankfully Node Red is available to rescue the situation!

The flow is really simple, the only additional node I have added is the node-red-contrib-httpauth.

  1. On a HTTP request, fetch the RSS feed.
  2. Convert from XML to and Object.
  3. Replace msg.payload.rss.channel[0].image[0].url[0] with a good url from the podcasters website.
  4. Create the txt/xml headers
  5. Return the fixed RSS Feed

Node-Red Flow

[{"id":"8d2a4ad1.4599a","type":"http request","z":"d437ad18.0999c","name":"","method":"GET","ret":"txt","paytoqs":false,"url":"https://www.patreon.com/rss/yaddayada","tls":"","proxy":"","authType":"","x":367.5,"y":31,"wires":[["4c5cdedd.6772c8"]]},{"id":"4c5cdedd.6772c8","type":"xml","z":"d437ad18.0999c","name":"XML To Object","property":"payload","attr":"","chr":"","x":230.5,"y":78,"wires":[["adbd8c2e.7fbcd"]]},{"id":"7475a34e.9f953c","type":"http in","z":"d437ad18.0999c","name":"rss","url":"/mystupidRSS","method":"get","upload":false,"swaggerDoc":"","x":69.5,"y":31,"wires":[["26c3aede.f41d4a"]]},{"id":"26c3aede.f41d4a","type":"node-red-contrib-httpauth","z":"d437ad18.0999c","name":"","file":"","cred":"","authType":"Basic","realm":"","username":"","password":"","hashed":false,"x":213.5,"y":31,"wires":[["8d2a4ad1.4599a"]]},{"id":"56731f49.b7f77","type":"xml","z":"d437ad18.0999c","name":"Object to XML","property":"payload","attr":"","chr":"","x":647.5,"y":79,"wires":[["5aa22446.612044"]]},{"id":"5aa22446.612044","type":"change","z":"d437ad18.0999c","name":"Set Headers","rules":[{"t":"set","p":"headers","pt":"msg","to":"{}","tot":"json"},{"t":"set","p":"headers.content-type","pt":"msg","to":"text/xml","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":219,"y":131,"wires":[["8df07127.e9d0c8"]]},{"id":"8df07127.e9d0c8","type":"http response","z":"d437ad18.0999c","name":"","statusCode":"","headers":{},"x":391,"y":131,"wires":[]},{"id":"adbd8c2e.7fbcd","type":"change","z":"d437ad18.0999c","name":"Replace Cover Image","rules":[{"t":"set","p":"payload.rss.channel[0].image[0].url[0]","pt":"msg","to":"https://example.com/cover_art.png","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":440.5,"y":79,"wires":[["56731f49.b7f77"]]}]