name: create new release

on:
  workflow_dispatch:
    inputs:
      version:
        description: "Version to register (without leading 'v' and semantic versioning schema, e.g. '1.0.1')"
        required: true

jobs:
  create_package:
    name: "create package"
    runs-on: ubuntu-latest
    outputs:
      previous_version: ${{ steps.version_test.outputs.previous_version }}
    steps:
      # 1. checkout the repo
      - name: "checkout"
        uses: actions/checkout@v3

      # 2. test if provided version number fits in semantic versioning schema
      - name: "test version number"
        id: version_test
        run: |
          VERSION=${{ github.event.inputs.version }}
          echo "check if version follows the semantic version pattern"
          SEM_VER_REGEX="^(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)$"
          STATUS=0
          if [[ ! $VERSION =~ $SEM_VER_REGEX ]]; then
            STATUS=1
          fi
          if [ $STATUS = 1 ]; then
            echo "Version $VERSION does not follow the semantic versioning schema."
            echo "Please see https://semver.org/ for further information."
            exit 1
          fi
          echo "check if version was already used"
          grep -qs "Version \[$VERSION\]" CHANGELOG.md && STATUS=1
          if [ $STATUS = 1 ]; then
            echo "Version $VERSION is already present in CHANGELOG.md."
            exit 1
          fi
          echo "check if version is an increment"
          VERSION_MAJOR=$(echo $VERSION | cut -d. -f1 )
          VERSION_MINOR=$(echo $VERSION | cut -d. -f2 )
          VERSION_PATCH=$(echo $VERSION | cut -d. -f3 )
          PREVIOUS_VERSION=$(grep -n -m 1 "## Version \[*.*.*\]" CHANGELOG.md | cut -d[ -f2 | cut -d] -f1)
          PREVIOUS_VERSION_MAJOR=$(echo $PREVIOUS_VERSION | cut -d. -f1 )
          PREVIOUS_VERSION_MINOR=$(echo $PREVIOUS_VERSION | cut -d. -f2 )
          PREVIOUS_VERSION_PATCH=$(echo $PREVIOUS_VERSION | cut -d. -f3 )
          if [[ $VERSION_MAJOR -eq PREVIOUS_VERSION_MAJOR ]]; then
            if [[ $VERSION_MINOR -eq PREVIOUS_VERSION_MINOR ]]; then
              if [[ $(($VERSION_PATCH - 1)) -ne PREVIOUS_VERSION_PATCH ]]; then
                STATUS=1
              fi
            else
              if [[ $(($VERSION_MINOR - 1)) -eq PREVIOUS_VERSION_MINOR ]]; then
                if [[ $VERSION_PATCH -ne 0 ]]; then
                  STATUS=1
                fi
              else
                STATUS=1
              fi
            fi
          else
            if [[ $(($VERSION_MAJOR - 1)) -eq PREVIOUS_VERSION_MAJOR ]]; then
              if [[ $VERSION_MINOR -ne 0 ]]; then
                STATUS=1
              fi
              if [[ $VERSION_PATCH -ne 0 ]]; then
                STATUS=1
              fi
            else
              STATUS=1
            fi
          fi
          if [ $STATUS = 1 ]; then
            echo "Version $VERSION skipped steps from the previous version $PREVIOUS_VERSION and thus does not follow the semantic versioning schema."
            echo "Please see https://semver.org/ for further information."
            exit 1
          fi
          echo "::set-output name=previous_version::$(version_test deposition show prereserved $PREVIOUS_VERSION)"

      # 3. create release note
      - name: "create release note"
        run: |
          VERSION=${{ github.event.inputs.version }}
          PREVIOUS_VERSION=${{ needs.create_package.outputs.previous_version }}
          STATUS=0
          echo "create release note"
          TOP=$(grep -n "## \[Unreleased\]" CHANGELOG.md | cut -d: -f1)
          TOP=$(( $TOP + 1 ))
          BOTTOM=$(grep -n -m 1 "## Version \[$PREVIOUS_VERSION\]" CHANGELOG.md | cut -d: -f1)
          BOTTOM=$(( $BOTTOM - 1 ))
          awk "NR>$TOP&&NR<$BOTTOM" CHANGELOG.md > release-note-v$VERSION.md
          sed -i -- "s/###/##/g" release-note-v$VERSION.md
          echo "check if release note is empty"
          WORD_COUNT=$(wc -w release-note-v$VERSION.md | awk '{print $1}')
          if [[ $WORD_COUNT -lt 4 ]]; then
            STATUS=1
          fi
          if [ $STATUS = 1 ]; then
            echo "Please provide a meaningful CHANGELOG.md for the new version $VERSION"
            exit 1
          fi

      # 4. Update zenodo metadata.json
      - name: "Update zenodo metadata.json"
        run: |
          VERSION=${{ github.event.inputs.version }}
          sed -i".backup" -e"s/\"version\": \"%%\[SCRIPT\]\"/\"version\": \"$VERSION\"/g" .github/zenodo/metadata.json

      # 5. create release archive
      - name: "create release archive"
        uses: papeloto/action-zip@v1
        with:
          files: docs src test README.md LICENSE Project.toml
          recursive: false
          dest: TrainRuns.jl-v${{ github.event.inputs.version }}.zip

      # 6. upload artifact to share it with other jobs
      - uses: actions/upload-artifact@v3
        with:
          path: |
            release-note-v${{ github.event.inputs.version }}.md
            TrainRuns.jl-v${{ github.event.inputs.version }}.zip
          if-no-files-found: error # 'warn' or 'ignore' are also available, defaults to `warn`
      - uses: actions/upload-artifact@v3
        with:
          path: .github/zenodo/metadata.json
          if-no-files-found: error # 'warn' or 'ignore' are also available, defaults to `warn`

  publish_github:
    needs: create_package
    name: "publish on github"
    runs-on: ubuntu-latest
    steps:
      # 1. download artifact in folder artifact/
      - uses: actions/download-artifact@v3

      # 2. creating a new release
      - name: "create release"
        id: create_release
        uses: actions/create-release@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} # This token is provided by Actions, you do not need to create your own token
        with:
          tag_name: ${{ github.ref }}
          release_name: Release ${{ github.ref }}
          body_path: artifact/release-note-v${{ github.event.inputs.version }}.md
          draft: false
          prerelease: false

      # 3. upload package to new release
      - name: "upload release asset"
        uses: actions/upload-release-asset@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          upload_url: ${{ steps.create_release.outputs.upload_url }}
          asset_path: artifact/TrainRuns.jl-v${{ github.event.inputs.version }}.zip
          asset_name: TrainRuns.jl-v${{ github.event.inputs.version }}.zip
          asset_content_type: application/zip

      # 4. publish release on github
      - name: "publish release"
        uses: StuYarrow/publish-release@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          id: ${{ steps.create_release.outputs.id }}

  publish_zenodo:
    needs: create_package
    name: "publish on zenodo"
    outputs:
      doi: ${{ steps.zenodraft.outputs.doi }}
    runs-on: ubuntu-latest
    steps:
      # 1. download artifact in folder artifact/ and move it one level up
      - uses: actions/download-artifact@v3
      - run: |
          mv ./artifact/TrainRuns.jl-v${{ github.event.inputs.version }}.zip ./

      # 2. install zenodraft
      - name: "install zenodraft"
        run: npm install -g zenodraft

      # 3. upload new release to zenodo
      - name: "uploading to zenodo"
        id: zenodraft
        env:
          ZENODO_ACCESS_TOKEN: ${{ secrets.ZENODO_ACCESS_TOKEN }}
          COLLECTION: 6448563
        run: |
          ID=$(zenodraft deposition create version $COLLECTION)
          zenodraft file add $ID TrainRuns.jl-v*.zip
          zenodraft metadata update $ID artifact/metadata.json
          zenodraft deposition publish $ID
          echo "::set-output name=doi::$(zenodraft deposition show prereserved $ID)"

  update_repo:
    needs: publish_zenodo
    name: "updating CITATION.cff and CHANGELOG.md"
    runs-on: ubuntu-latest
    steps:
      # 1. checkout the repo
      - name: "checkout"
        uses: actions/checkout@v3
      
      # 2. update CITATION.cff
      - name: "update CITATION.cff"
        run: |
          DATE=$(date "+%Y-%m-%d")
          VERSION=${{ github.event.inputs.version }}
          DOI=${{ needs.publish_zenodo.outputs.doi }}
          echo "find lines in CITATION.cff"
          VERSION_LINE=$(grep -n '^version:' CITATION.cff | cut -d: -f1)
          DATE_LINE=$(grep -n 'date-released:' CITATION.cff | cut -d: -f1)
          echo "select the second DOI"
          DOI_LINE=$(grep -n 'type: doi' CITATION.cff | cut -d: -f1 | awk "NR==2")
          DOI_LINE=$(( $DOI_LINE + 1 ))
          echo "update CITATION.cff"
          sed -i -- "${VERSION_LINE}s|.*|version: $VERSION|" CITATION.cff
          sed -i -- "${DATE_LINE}s|.*|date-released: ${DATE}|" CITATION.cff
          sed -i -- "${DOI_LINE}s|.*|    value: $DOI|" CITATION.cff
      
      # 3. update CHANGELOG.md
      - name: "update CHANGELOG.md"
        run: |
          DATE=$(date "+%Y-%m-%d")
          VERSION=${{ github.event.inputs.version }}
          URL="https://github.com/railtoolkit/TrainRuns.jl/compare"
          PREVIOUS_VERSION=${{ needs.create_package.outputs.previous_version }}
          echo "increment CHANGELOG.md"
          sed -i -- "/## \[Unreleased\]/a\\\n\n## Version [$VERSION] $DATE" CHANGELOG.md
          sed -i -- "s|^\[Unreleased\]: .*$|\[Unreleased\]: $URL/v$VERSION...main\n\[$VERSION\]: $URL/v$PREVIOUS_VERSION...v$VERSION|" CHANGELOG.md
      
      # 4. push the change back to main
      - name: push
        uses: EndBug/add-and-commit@v9
        with:
          message: "DOI updated to ${{ github.event.inputs.version }} (via github action)"
          add: CITATION.cff CHANGELOG.md
          author_name: railtoolkit
          author_email: railtoolkit@ownx.net

  register:
    needs: update_repo
    name: "publish in JuliaRegistries"
    runs-on: ubuntu-latest
    steps:
      # 1. register new release at JuliaRegistries
      - uses: julia-actions/RegisterAction@latest
        with:
          token: ${{ secrets.GITHUB_TOKEN }}

  publish_mastodon:
    needs: publish_zenodo
    name: "Send toot about it to railtoolkit@fosstodon.org"
    runs-on: ubuntu-latest
    steps:
      - uses: cbrgm/mastodon-github-action@v1
        with:
          message: "The new version ${{ github.event.inputs.version }} of TrainRuns.jl is available! DOI: https://doi.org/${{needs.publish_zenodo.outputs.doi}}"
          visibility: "public" # default: public
        env:
          MASTODON_URL: "https://fosstodon.org/"
          MASTODON_ACCESS_TOKEN: ${{ secrets.MASTODON_ACCESS_TOKEN }} # access token