publish-step-1.yml

# Manually triggered for creating a TA-Lib release.
#
# More info: README-DEVS.md

name: publish-step-1

# Controls when the workflow will run
on:
  workflow_dispatch:

jobs:
  create_release:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout main branch
        uses: actions/checkout@v4
        with:
          ref: main
          fetch-depth: 0 # Fetch all history for all tags

      - name: Install Python
        uses: actions/setup-python@v5
        with:
          python-version: "3.x"

      - name: Prepare shell envs
        shell: bash
        run: |
          VERSION=$(cat VERSION)
          echo "VERSION=${VERSION}" >> $GITHUB_ENV
          TAG="v${VERSION}"
          echo "TAG=${TAG}" >> $GITHUB_ENV
          echo "PYTHON=python3" >> $GITHUB_ENV
          git config --global user.name "github-actions[bot]"
          git config --global user.email "github-actions[bot]@users.noreply.github.com"

      - name: Tagging
        shell: bash
        env:
          TAG: ${{ env.TAG }}
        run: |
          # Ensure latest commit is tag with '$TAG'
          LATEST_COMMIT=$(git rev-parse HEAD)
          if git rev-parse --verify "$TAG" >/dev/null 2>&1; then
            EXISTING_TAG_COMMIT=$(git rev-parse --verify "$TAG")
            if [ "$LATEST_COMMIT" != "$EXISTING_TAG_COMMIT" ]; then
              echo "Deleting tag $TAG on older commit $EXISTING_TAG_COMMIT"
              git tag -d "$TAG"
              git push --delete origin "$TAG"
            else
              echo "Tag $TAG already exists for latest commit. No changes needed."
              exit 0
            fi
          fi
          echo "Creating new tag $TAG on latest commit $LATEST_COMMIT"
          git tag "$TAG"
          git push origin "$TAG"

      - name: Ensure Release exists and init release_vars
        id: release_vars
        uses: actions/github-script@v7
        env:
          TAG: ${{ env.TAG }}
        with:
          script: |
            let tag_name = process.env.TAG;
            console.log(`tag_name: ${tag_name}`);
            let upload_url;

            try {
              // Check if the release already exists
              const { data: releases } = await github.rest.repos.listReleases({
                owner: context.repo.owner,
                repo: context.repo.repo,
              });
              let release = releases.find(release => release.tag_name === tag_name);

              if (release) {
                if (!release.draft) {
                  console.log(`Release for tag ${tag_name} is already published. Exiting with error.`);
                  core.setFailed(`Release for tag ${tag_name} is already published.`);
                  return;
                }
                console.log(`Draft release for tag ${tag_name} already exists.`);

                // Update the release to point to potentially new commit (noop when no change)
                release = await github.rest.repos.updateRelease({
                  owner: context.repo.owner,
                  repo: context.repo.repo,
                  release_id: release.id,
                  tag_name: tag_name,
                  target_commitish: context.sha,
                });

                // Retrieve the latest draft release object to get the upload_url
                const { data: updatedRelease } = await github.rest.repos.getRelease({
                  owner: context.repo.owner,
                  repo: context.repo.repo,
                  release_id: release.id,
                });

                upload_url = updatedRelease.upload_url;
              } else {
                // Release does not exists, so create it.
                const response = await github.rest.repos.createRelease({
                  owner: context.repo.owner,
                  repo: context.repo.repo,
                  tag_name: tag_name,
                  name: tag_name,
                  draft: true,
                  prerelease: false,
                });
                if (response.status >= 200 && response.status < 300 && response.data.upload_url) {
                  console.log(`Draft release created with tag [${tag_name}]`);
                  upload_url = response.data.upload_url;
                } else {
                  core.setFailed(`Failed to create release with tag [${tag_name}] Status: ${response.status}`);
                  return;
                }
              }
            } catch (error) {
              core.setFailed(`Error while creating draft release: ${error.message}`);
              return;
            }

            console.log(`upload_url: ${upload_url}`);
            core.setOutput("upload_url", upload_url);

    outputs:
      upload_url: ${{ steps.release_vars.outputs.upload_url }}