CLI for sending newsletters

This is a CLI tool I created for personal use. I published it on Github for fun, because I am a fan of a few tools and practices used in this tool.

Please note, the project structure is defined using Tuist. Please install that tool first and run tuist generate to generate the Xcode project structure. Of interest:

• RSParser a supporting lib of NetNewsWire to parse RSS feeds.
• Swift Argument Parser
• Calling out to the network with URLSession and keep the active as long as needed, but not any longer by using a RunLoop, DispatchGroups and proper exit calls.
• Securely storing secrets in the Keychain.
• Storing other config items in user defaults.

What this tools actually helps me with

It fetched a bit of HTML from the internet, which happens to be output exactly the way it needs to be for the newsletter. The page content is then pushed to my Sendy install on a specific list which "happens" to contain the subscribers for Swift Weekly Brief.

Easy mode newsletter sending. 🤩

The tool can be used in two ways.

• Direct to Sendy. This requires these options to be set with the config command.

  • sendyApi
  • rssFeed
  • contentUrl
  • apiCampaignUrl
  • productionListId
  • testListId

• Through an undisclosed bounce page I created that just adds the sendyApi, productionListIdandtestListId`. This requires these options to the config command:

  • rssFeed
  • contentUrl
  • apiCampaignUrl
  • secret