create-github-release.yml

name: Create GitHub Release

on:
  push:
    tags:
      - "monitor-app-v*"
      - "next-cwv-monitor-v*"
  workflow_dispatch:
    inputs:
      tag:
        description: "Tag name (e.g. monitor-app-v1.1.0)"
        required: true
        type: string
  workflow_call:
    inputs:
      tag:
        description: "Tag name (e.g. monitor-app-v1.1.0)"
        required: true
        type: string

permissions:
  contents: write

jobs:
  create_release:
    runs-on: ubuntu-latest
    steps:
      - name: Resolve tag metadata
        id: vars
        run: |
          TAG="${{ inputs.tag }}"
          if [ -z "$TAG" ]; then
            TAG="${GITHUB_REF_NAME}"
          fi

          echo "tag=$TAG" >> "$GITHUB_OUTPUT"

          if [[ "$TAG" == monitor-app-v* ]]; then
            VERSION="${TAG#monitor-app-v}"
            NAME="monitor-app"
            CHANGELOG_PATH="apps/monitor-app/CHANGELOG.md"
            RELEASE_TITLE="Next CWV Monitor (Self-hosted) v${VERSION}"
          elif [[ "$TAG" == next-cwv-monitor-v* ]]; then
            VERSION="${TAG#next-cwv-monitor-v}"
            NAME="next-cwv-monitor"
            CHANGELOG_PATH="packages/client-sdk/CHANGELOG.md"
            RELEASE_TITLE="Next CWV Monitor SDK v${VERSION}"
          else
            echo "Unsupported tag: $TAG"
            exit 1
          fi

          echo "version=$VERSION" >> "$GITHUB_OUTPUT"
          echo "name=$NAME" >> "$GITHUB_OUTPUT"
          echo "changelog=$CHANGELOG_PATH" >> "$GITHUB_OUTPUT"
          echo "release_title=$RELEASE_TITLE" >> "$GITHUB_OUTPUT"

      - name: Checkout tag
        uses: actions/checkout@v4
        with:
          ref: ${{ steps.vars.outputs.tag }}
          fetch-depth: 0

      - name: Build release notes
        id: notes
        run: |
          TAG="${{ steps.vars.outputs.tag }}"
          VERSION="${{ steps.vars.outputs.version }}"
          NAME="${{ steps.vars.outputs.name }}"
          CHANGELOG="${{ steps.vars.outputs.changelog }}"

          awk -v ver="$VERSION" '
            $0 ~ "^## " ver "$" {in_section=1; print; next}
            in_section && $0 ~ "^## " {exit}
            in_section {print}
          ' "$CHANGELOG" > changelog-section.md

          if [ ! -s changelog-section.md ]; then
            echo "No changelog section found for $VERSION in $CHANGELOG"
            {
              echo "## $VERSION"
              echo
              echo "- See commits for details."
            } > changelog-section.md
          fi

          NOTES_FILE="release-notes.md"
          {
            echo "## Changelog"
            echo
            cat changelog-section.md
            echo

            if [ "$NAME" = "monitor-app" ]; then
              MAJOR_MINOR="${VERSION%.*}"

              echo "## Docker images"
              echo
              echo "- \`ghcr.io/${{ github.repository_owner }}/cwv-monitor:${VERSION}\`"
              echo "- \`ghcr.io/${{ github.repository_owner }}/cwv-monitor:${MAJOR_MINOR}\`"
              echo "- \`ghcr.io/${{ github.repository_owner }}/cwv-monitor:latest\`"
              echo
              echo "- \`ghcr.io/${{ github.repository_owner }}/cwv-monitor-migrations:${VERSION}\`"
              echo "- \`ghcr.io/${{ github.repository_owner }}/cwv-monitor-migrations:${MAJOR_MINOR}\`"
              echo "- \`ghcr.io/${{ github.repository_owner }}/cwv-monitor-migrations:latest\`"
              echo
              echo "- \`ghcr.io/${{ github.repository_owner }}/cwv-monitor-seed:${VERSION}\`"
              echo "- \`ghcr.io/${{ github.repository_owner }}/cwv-monitor-seed:${MAJOR_MINOR}\`"
              echo "- \`ghcr.io/${{ github.repository_owner }}/cwv-monitor-seed:latest\`"
            else
              echo "## Install"
              echo
              echo "\`npm i next-cwv-monitor@${VERSION}\`"
            fi
          } > "$NOTES_FILE"

          echo "notes_file=$NOTES_FILE" >> "$GITHUB_OUTPUT"

      - name: Create GitHub Release (if missing)
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          TAG="${{ steps.vars.outputs.tag }}"
          TITLE="${{ steps.vars.outputs.release_title }}"
          NOTES_FILE="${{ steps.notes.outputs.notes_file }}"

          if gh release view "$TAG" >/dev/null 2>&1; then
            echo "Release for $TAG already exists, skipping"
            exit 0
          fi

          gh release create "$TAG" --title "$TITLE" --notes-file "$NOTES_FILE"