Usage

1. Create a Spotify app. Note the ID and secret provided in your application dashboard.
2. Copy config.toml.example to config.toml. Edit config.toml and set your ID and secret. Make sure that they are enclosed by quotation marks, TOML is strict about denoting that these values are strings.
3. Run the code. This can be done from source by running go run . in the root of the repository or by building a binary with go build .. The binary accepts one argument, -dest, which is the name of the CSV file your liked tracks will be written to.
4. The application will print out a URL of the form https://accounts.spotify.com/authorize?access_type=offline&client_id=CLIENT_ID&code_challenge=CODE_CHALLENGE&code_challenge_method=S256&redirect_uri=https://yourappurl.com/callback/&response_type=code&scope=user-library-read&state=state.
5. Copy this URL and open it in a browser. You will be asked to authenticate with Spotify and allow the application access to your account. The only scope requested is user-library-read so it cannot make any changes to your account or library.
6. After allowing the application access, you'll be redirected to a new page. The URL will look like https://likedumper.ndumas.com/callback?code=AUTH_CODE&state=state. Copy the value of the code URL parameter, everything after the = and before &state.
7. Paste this code into the terminal.
8. The application will iterate through your Liked tracks and write them to a CSV file, either tracks.csv or the filename you provided with the -dest flag.