name: Version Bump

on:
  push:
    branches:
      - dev
    paths-ignore:
      - 'VERSION'
      - '.github/workflows/version-bump.yml'

jobs:
  bump-version:
    runs-on: ubuntu-latest
    timeout-minutes: 45
    # Skip if commit message contains [skip ci] or [skip version]
    if: "!contains(github.event.head_commit.message, '[skip ci]') && !contains(github.event.head_commit.message, '[skip version]') && !startsWith(github.event.head_commit.message, 'chore: bump version')"

    permissions:
      actions: read
      contents: write
      pull-requests: read
      statuses: write

    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
          token: ${{ secrets.GITHUB_TOKEN }}

      - name: Get current version
        id: current
        run: |
          if [ -f VERSION ]; then
            VERSION=$(cat VERSION | tr -d '\n\r ')
          else
            VERSION="0.0.0"
          fi
          echo "version=$VERSION" >> $GITHUB_OUTPUT
          echo "Current version: $VERSION"

      - name: Determine bump type
        id: bump
        env:
          # Pass the commit message through the environment, NOT string-
          # interpolated into the run script. Splicing
          # ${{ github.event.head_commit.message }} directly into the shell
          # source means a body containing backticks, $(...) or | is parsed
          # as code — which broke this job (commit e3337f0's body had
          # `vagrant up | Out-Host`, a syntax error) and is a command-
          # injection vector. As an env var it is inert text bash never re-parses.
          COMMIT_MSG: ${{ github.event.head_commit.message }}
        run: |
          # Major if a [major] tag OR a BREAKING/major: conventional prefix is
          # present; minor for [minor] tag OR feat/feature/minor: prefix;
          # otherwise patch. Supporting both keeps existing conventional
          # commits working while allowing explicit [minor]/[major] tags.
          if echo "$COMMIT_MSG" | grep -qiE '\[major\]' || \
             echo "$COMMIT_MSG" | grep -qiE '^(BREAKING|breaking!|major):'; then
            echo "type=major" >> $GITHUB_OUTPUT
            echo "Bump type: major"
          elif echo "$COMMIT_MSG" | grep -qiE '\[minor\]' || \
               echo "$COMMIT_MSG" | grep -qiE '^(feat|feature|minor):'; then
            echo "type=minor" >> $GITHUB_OUTPUT
            echo "Bump type: minor"
          else
            echo "type=patch" >> $GITHUB_OUTPUT
            echo "Bump type: patch"
          fi

      - name: Calculate new version
        id: new
        run: |
          VERSION="${{ steps.current.outputs.version }}"
          BUMP_TYPE="${{ steps.bump.outputs.type }}"

          # Parse version components
          MAJOR=$(echo $VERSION | cut -d. -f1)
          MINOR=$(echo $VERSION | cut -d. -f2)
          PATCH=$(echo $VERSION | cut -d. -f3)

          # Bump appropriate component
          case $BUMP_TYPE in
            major)
              MAJOR=$((MAJOR + 1))
              MINOR=0
              PATCH=0
              ;;
            minor)
              MINOR=$((MINOR + 1))
              PATCH=0
              ;;
            patch)
              PATCH=$((PATCH + 1))
              ;;
          esac

          NEW_VERSION="${MAJOR}.${MINOR}.${PATCH}"
          echo "version=$NEW_VERSION" >> $GITHUB_OUTPUT
          echo "New version: $NEW_VERSION"

      # A GITHUB_TOKEN push deliberately does not start another workflow run.
      # Advancing dev immediately therefore used to replace the tested PR head
      # with an untested VERSION-only commit. Wait for every sibling run on the
      # triggering SHA first; on a red commit, do not advance dev at all.
      - name: Wait for sibling CI before advancing dev
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          deadline=$((SECONDS + 2400))
          settled_polls=0

          while [ "$SECONDS" -lt "$deadline" ]; do
            runs_file="$RUNNER_TEMP/serverkit-sibling-runs.json"
            gh run list \
              --repo "$GITHUB_REPOSITORY" \
              --commit "$GITHUB_SHA" \
              --limit 100 \
              --json workflowName,event,status,conclusion,url \
              > "$runs_file"

            relevant=$(jq '[.[] | select(
              .workflowName != "Version Bump"
              and .workflowName != "Discord Notify"
            )]' "$runs_file")
            failed=$(jq -r '.[] | select(
              .status == "completed"
              and .conclusion != "success"
              and .conclusion != "skipped"
              and .conclusion != "neutral"
            ) | "\(.workflowName) [\(.event)]: \(.conclusion) — \(.url)"' \
              <<< "$relevant")
            if [ -n "$failed" ]; then
              echo "::error::Sibling CI failed; VERSION will not advance."
              printf '%s\n' "$failed"
              exit 1
            fi

            pending=$(jq '[.[] | select(.status != "completed")] | length' \
              <<< "$relevant")
            total=$(jq 'length' <<< "$relevant")
            echo "Sibling CI: $total discovered, $pending still running"

            if [ "$pending" -eq 0 ]; then
              settled_polls=$((settled_polls + 1))
              # Three quiet polls prevent a just-created push/PR run from being
              # missed before GitHub has indexed it for `gh run list`.
              if [ "$settled_polls" -ge 3 ]; then
                break
              fi
            else
              settled_polls=0
            fi
            sleep 10
          done

          if [ "$SECONDS" -ge "$deadline" ]; then
            echo "::error::Timed out waiting for sibling CI; VERSION will not advance."
            exit 1
          fi

      - name: Update VERSION file
        run: |
          echo "${{ steps.new.outputs.version }}" > VERSION
          cat VERSION

      - name: Commit and push
        id: commit
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"
          git add VERSION
          git commit -m "chore: bump version to ${{ steps.new.outputs.version }} [skip ci]"
          git push
          echo "sha=$(git rev-parse HEAD)" >> "$GITHUB_OUTPUT"

      # The bot push cannot fire Main Promotion either. Publish the exact
      # required context only after sibling CI passed and an open same-repo
      # dev -> main promotion was verified. This keeps strict branch protection
      # attached to the generated head instead of the now-parent commit.
      - name: Preserve the promotion gate on the generated commit
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          NEW_SHA: ${{ steps.commit.outputs.sha }}
        run: |
          owner="${GITHUB_REPOSITORY%%/*}"
          pr_number=$(gh api --method GET "repos/$GITHUB_REPOSITORY/pulls" \
            -f state=open \
            -f base=main \
            -f head="$owner:dev" \
            --jq '.[0].number // empty')

          if [ -z "$pr_number" ]; then
            echo "No open dev -> main promotion; no promotion status is needed."
            exit 0
          fi

          gh api --method POST "repos/$GITHUB_REPOSITORY/statuses/$NEW_SHA" \
            -f state=success \
            -f context='Require dev source' \
            -f description='Sibling CI passed; verified same-repository dev -> main promotion' \
            -f target_url="$GITHUB_SERVER_URL/$GITHUB_REPOSITORY/actions/runs/$GITHUB_RUN_ID"
          echo "Published Require dev source for PR #$pr_number at $NEW_SHA"

      - name: Create summary
        env:
          # Same injection-safety reason as the bump step: keep the raw
          # commit message out of the run script source.
          TRIGGER_MSG: ${{ github.event.head_commit.message }}
        run: |
          echo "## Version Bump Summary" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "| Field | Value |" >> $GITHUB_STEP_SUMMARY
          echo "|-------|-------|" >> $GITHUB_STEP_SUMMARY
          echo "| Previous Version | ${{ steps.current.outputs.version }} |" >> $GITHUB_STEP_SUMMARY
          echo "| New Version | ${{ steps.new.outputs.version }} |" >> $GITHUB_STEP_SUMMARY
          echo "| Bump Type | ${{ steps.bump.outputs.type }} |" >> $GITHUB_STEP_SUMMARY
          # First line only, and via env — keeps a multi-line / special-char
          # body from corrupting the markdown table or the script.
          echo "| Trigger Commit | $(echo "$TRIGGER_MSG" | head -n1) |" >> $GITHUB_STEP_SUMMARY