name: "release: bump version and cut the release"

# One entry point for a SeaweedFS release:
#   1. bump MAJOR/MINOR in constants.go and the Helm Chart.yaml, commit to master
#   2. push the <appVersion> tag, which fans out to the workflows that trigger on
#      `push: tags` (binaries_release*, container_release_unified, helm_manual_release)
#   3. create the GitHub release, with GitHub's generated notes
#   4. dispatch "Prepare release" in seaweedfs-csi-driver and seaweedfs-operator,
#      which pick up the new master through `go get -u`, and wait for both
#
# Events raised by the default GITHUB_TOKEN do not start other workflows, and it
# cannot reach the other two repositories at all. Add a repo secret RELEASE_PAT
# with `contents: write` here and `actions: write` on the csi-driver and operator
# repos. Without it the tag is still pushed, but nothing downstream of it runs.

on:
  workflow_dispatch:
    inputs:
      bump:
        description: "Which part to increment (ignored when 'version' is set)"
        type: choice
        options:
          - minor
          - major
        default: minor
      version:
        description: "Explicit MAJOR.MINOR to set, e.g. 4.36 (overrides 'bump')"
        type: string
        required: false
      downstream:
        description: "Also release the CSI driver and the operator"
        type: boolean
        default: true
      dry_run:
        description: "Show the version bump, but change nothing"
        type: boolean
        default: false

jobs:
  release:
    runs-on: ubuntu-latest
    permissions:
      contents: write
    outputs:
      app_version: ${{ steps.compute.outputs.app_version }}
      sha: ${{ steps.tag.outputs.sha }}
    steps:
      - uses: actions/checkout@v7
        with:
          ref: master
          fetch-depth: 0
          token: ${{ secrets.RELEASE_PAT || secrets.GITHUB_TOKEN }}

      - name: Check the release token
        env:
          HAS_PAT: ${{ secrets.RELEASE_PAT != '' }}
        run: |
          if [ "$HAS_PAT" != "true" ]; then
            echo "::warning::RELEASE_PAT is not set. The tag will be pushed with GITHUB_TOKEN, so the binary, container and helm workflows will not start on their own."
          fi

      - name: Compute new version
        id: compute
        env:
          BUMP: ${{ inputs.bump }}
          INPUT_VERSION: ${{ inputs.version }}
        run: |
          set -euo pipefail
          CONST=weed/util/version/constants.go

          MAJOR=$(grep -oP 'MAJOR_VERSION\s*=\s*int32\(\K[0-9]+' "$CONST")
          MINOR=$(grep -oP 'MINOR_VERSION\s*=\s*int32\(\K[0-9]+' "$CONST")
          echo "current: ${MAJOR}.${MINOR}"

          if [ -n "$INPUT_VERSION" ]; then
            if ! [[ "$INPUT_VERSION" =~ ^[0-9]+\.[0-9]+$ ]]; then
              echo "::error::version must be MAJOR.MINOR, e.g. 5.01 (got '$INPUT_VERSION')"
              exit 1
            fi
            # 10# forces base 10 so 08/09 are not parsed as octal.
            MAJOR=$((10#${INPUT_VERSION%%.*}))
            MINOR=$((10#${INPUT_VERSION##*.}))
            if [ "$MINOR" -gt 99 ]; then
              echo "::error::minor must be 0-99 (got $MINOR); it rolls into the next major at 99"
              exit 1
            fi
          else
            case "$BUMP" in
              # Minor is a 2-digit field: 4.99 -> 5.00 -> 5.01.
              major) MAJOR=$((MAJOR + 1)); MINOR=0 ;;
              minor)
                if [ "$MINOR" -ge 99 ]; then
                  MAJOR=$((MAJOR + 1)); MINOR=0
                else
                  MINOR=$((MINOR + 1))
                fi
                ;;
              *) echo "::error::unknown bump '$BUMP'"; exit 1 ;;
            esac
          fi

          # appVersion mirrors the Go VERSION_NUMBER (zero-padded minor);
          # chart version is plain SemVer (no leading zeros).
          APP_VERSION=$(printf '%d.%02d' "$MAJOR" "$MINOR")
          CHART_VERSION="${MAJOR}.${MINOR}.0"
          echo "new: app=${APP_VERSION} chart=${CHART_VERSION}"

          {
            echo "major=${MAJOR}"
            echo "minor=${MINOR}"
            echo "app_version=${APP_VERSION}"
            echo "chart_version=${CHART_VERSION}"
          } >> "$GITHUB_OUTPUT"

      - name: Apply version to constants.go
        env:
          MAJOR: ${{ steps.compute.outputs.major }}
          MINOR: ${{ steps.compute.outputs.minor }}
        run: |
          set -euo pipefail
          CONST=weed/util/version/constants.go
          sed -i -E "s/(MAJOR_VERSION[[:space:]]*=[[:space:]]*int32\()[0-9]+(\))/\1${MAJOR}\2/" "$CONST"
          sed -i -E "s/(MINOR_VERSION[[:space:]]*=[[:space:]]*int32\()[0-9]+(\))/\1${MINOR}\2/" "$CONST"
          grep -E 'MAJOR_VERSION|MINOR_VERSION' "$CONST"

      - name: Apply version to Chart.yaml
        env:
          APP_VERSION: ${{ steps.compute.outputs.app_version }}
          CHART_VERSION: ${{ steps.compute.outputs.chart_version }}
        run: |
          set -euo pipefail
          CHART=k8s/charts/seaweedfs/Chart.yaml
          sed -i -E "s/^appVersion:.*/appVersion: \"${APP_VERSION}\"/" "$CHART"
          sed -i -E "s/^version:.*/version: ${CHART_VERSION}/" "$CHART"
          cat "$CHART"

      - name: Commit, and push the tag
        id: tag
        env:
          TAG: ${{ steps.compute.outputs.app_version }}
          DRY_RUN: ${{ inputs.dry_run }}
        run: |
          set -euo pipefail
          if git ls-remote --exit-code --tags origin "refs/tags/${TAG}" >/dev/null 2>&1; then
            echo "::error::Tag ${TAG} already exists."
            exit 1
          fi
          if [ "$DRY_RUN" = "true" ]; then
            git --no-pager diff --stat
            echo "sha=$(git rev-parse HEAD)" >> "$GITHUB_OUTPUT"
            exit 0
          fi

          git config user.name "github-actions[bot]"
          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
          if git diff --quiet; then
            echo "::warning::Version files are already at ${TAG}; tagging the current HEAD."
          else
            git add weed/util/version/constants.go k8s/charts/seaweedfs/Chart.yaml
            git commit -m "${TAG}"
            git push
          fi

          # Push the tag with git so the `push: tags` triggers fire. Creating the
          # tag through the release API alone would only emit a `create` event.
          git tag "$TAG"
          git push origin "$TAG"
          echo "sha=$(git rev-parse HEAD)" >> "$GITHUB_OUTPUT"

      - name: Create the release
        if: ${{ !inputs.dry_run }}
        env:
          GH_TOKEN: ${{ secrets.RELEASE_PAT || secrets.GITHUB_TOKEN }}
          TAG: ${{ steps.compute.outputs.app_version }}
        run: gh release create "$TAG" --title "$TAG" --generate-notes --verify-tag

  downstream:
    needs: release
    if: ${{ inputs.downstream && !inputs.dry_run }}
    runs-on: ubuntu-latest
    permissions: {}
    strategy:
      fail-fast: false
      matrix:
        include:
          - repo: seaweedfs/seaweedfs-csi-driver
            workflow: prepare_release.yaml
          - repo: seaweedfs/seaweedfs-operator
            workflow: prepare_release.yml
    steps:
      - name: Release ${{ matrix.repo }}
        env:
          GH_TOKEN: ${{ secrets.RELEASE_PAT }}
          REPO: ${{ matrix.repo }}
          WORKFLOW: ${{ matrix.workflow }}
          SHA: ${{ needs.release.outputs.sha }}
          MODULE: github.com/seaweedfs/seaweedfs
        run: |
          set -euo pipefail
          if [ -z "${GH_TOKEN}" ]; then
            echo "::error::RELEASE_PAT with actions:write on ${REPO} is required to release it"
            exit 1
          fi

          # The dispatched workflow pins seaweedfs with `go get -u ...@latest`, so
          # wait until the proxy serves the release commit as the tip. Asking for
          # the commit by name is what makes the proxy fetch it.
          for _ in $(seq 30); do
            curl -sf "https://proxy.golang.org/${MODULE}/@v/${SHA}.info" >/dev/null || true
            TIP=$(curl -sf "https://proxy.golang.org/${MODULE}/@latest" | jq -r '.Origin.Hash // ""' || true)
            [ "$TIP" = "$SHA" ] && break
            sleep 10
          done
          if [ "$TIP" != "$SHA" ]; then
            echo "::error::the module proxy still serves ${TIP} as the tip, so ${REPO} would pin a pre-release commit. Run ${WORKFLOW} there once it catches up."
            exit 1
          fi

          # Wait on the release the dispatched workflow publishes, not on the run
          # that publishes it: a dispatch cannot be told apart from a concurrent
          # one through the API, and the release is what we are here for.
          released() { gh api "repos/${REPO}/releases?per_page=30" --jq '[.[].tag_name]'; }

          BEFORE=$(released)
          gh workflow run -R "$REPO" "$WORKFLOW" --ref master -f bump=patch -f update_seaweedfs=true

          for _ in $(seq 80); do
            sleep 15
            NEW=$(released | jq -c --argjson before "$BEFORE" '. - $before')
            [ "$(jq length <<<"$NEW")" -gt 0 ] && break
          done
          if [ "$(jq length <<<"$NEW")" -eq 0 ]; then
            echo "::error::${REPO} published no release within 20 minutes; see https://github.com/${REPO}/actions/workflows/${WORKFLOW}"
            exit 1
          fi
          echo "${REPO} released $(jq -r 'join(", ")' <<<"$NEW")"