Automate version update after release

[strangelookingnerd]

Describe the need of your request

After a release is published, a PR with the patched changelog is created. In that PR it would make sense to also update the pluginVersion to the next patch number.

Proposed solution

Have a task similar to this:

    register("updateVersion") {
        description = "Updates the version in gradle.properties after a release build"

        val version = providers.gradleProperty("pluginVersion").get()
        val (major, minor, patch) = version.split(".").map { it.toInt() }
        val newVersion = "$major.$minor.${patch + 1}"

        // update
        val file = file("gradle.properties")
        val lines = file.readLines().toMutableList()

        val updatedLines = lines.map { line ->
            if (line.startsWith("pluginVersion = $version")) {
                "pluginVersion = $newVersion"
            } else {
                line
            }
        }

        file.writeText(updatedLines.joinToString(System.lineSeparator()) + System.lineSeparator())
    }

and call it before the changelog PR is created in release.yml action:

      # Update the artifact version
      - name: Update Version
        run: |
          ./gradlew updateVersion 

Alternatives you've considered

No response

Additional context

This could also be extended to handle major and minor releases alongside the patches - however for a first iteration updating the patch version would already be a great addition.