Skip prereleases and post one changelog line at a time

id: github-release-changelog-lines
namespace: company.team
description: |
  A GitHub release webhook starts this flow. Prereleases are dropped.
  Each remaining changelog line is posted on its own.

inputs:
  - id: repository
    type: STRING
    defaults: octocat/Hello-World
    description: owner/name used to confirm the tag against the GitHub releases API.

triggers:
  - id: github_release
    type: io.kestra.plugin.core.trigger.Webhook
    description: |
      GitHub repository webhook for the release event. The payload is
      GitHub's own release body, not a custom CI summary.
    key: "{{ secret('GITHUB_RELEASE_WEBHOOK_KEY') }}"

tasks:
  - id: only_stable_releases
    type: io.kestra.plugin.core.flow.If
    description: Drop anything that is not a published stable release.
    condition: "{{ trigger.body.action == 'published' and
      trigger.body.release.prerelease == false }}"
    then:
      - id: confirm_release
        type: io.kestra.plugin.core.http.Request
        description: Confirm the tag exists on the GitHub releases API before posting
          any line.
        uri: "https://api.github.com/repos/{{ inputs.repository }}/releases/tags/{{
          trigger.body.release.tag_name }}"
        method: GET
        headers:
          Accept: application/vnd.github+json
          User-Agent: kestra-github-release-changelog-lines

      - id: note_tag
        type: io.kestra.plugin.core.log.Log
        message: "Posting changelog lines for {{ trigger.body.release.tag_name }} (HTTP
          {{ outputs.confirm_release.code }})."

      - id: each_changelog_line
        type: io.kestra.plugin.core.flow.Loop
        description: One iteration per line of release.body.
        concurrencyLimit: 1
        values: "{{ trigger.body.release.body | split('

          ') }}"
        tasks:
          - id: post_line
            type: io.kestra.plugin.discord.DiscordIncomingWebhook
            description: Post this changelog line. Blank lines are skipped.
            runIf: "{{ item.value | trim != '' }}"
            url: "{{ secret('DISCORD_WEBHOOK_URL') }}"
            payload: |
              {
                "content": "{{ trigger.body.release.tag_name }}: {{ item.value }}"
              }
    else:
      - id: skip_prerelease
        type: io.kestra.plugin.core.log.Log
        message: "Skipped. action={{ trigger.body.action }} prerelease={{
          trigger.body.release.prerelease }}."