name: finalize-release
# Post-publish bookend to cut-release.yml. When a STABLE release ships, this:
#   1. Deletes the now-obsolete "backport release/vX.Y.Z" label — a shipped
#      release takes no more backports, so the label only invites mistakes.
#   2. Opens a PR bumping main's synchronized workspace versions to X.Y.(Z+1),
#      keeping main strictly ahead of the just-shipped stable tag (the build
#      guard requires apps/packaged version > the latest open-design-v* tag),
#      arms it for the merge queue (gh pr merge --auto enqueues on green), and
#      requests a @nexu-io/core-maintainers review.
#
# Trigger: workflow_run on release-stable completing — NOT `release: published`.
# release-stable.yml promotes its own draft to published with `gh release edit
# --draft=false` using GITHUB_TOKEN, and a release event minted by GITHUB_TOKEN
# does not trigger other workflows (GitHub's loop guard). So we react to the
# build finishing instead, exactly like backport-automerge / bake-plugin-
# previews-automerge react to ci. The version is read from the LATEST published
# release — release-stable promotes its release with `--latest`, so after a real
# publish that IS the just-shipped stable. We deliberately do NOT parse
# workflow_run.head_branch: release-stable can be dispatched from one ref while
# building another via its `ref` input, so head_branch may be the dispatch ref,
# not the built release branch. A dry-run (metadata/prepublish) publishes nothing,
# so `--latest` stays the previous (already-finalized) stable and every step
# no-ops by idempotency. The draft/prerelease/X.Y.Z guards add belt-and-braces.
#
# Why the bump PR still needs ONE human approval (unlike the other automerge
# bots, which merge hands-free): main enforces require_code_owner_review, and the
# bump touches CODEOWNERS-owned release manifests (apps/packaged, apps/desktop,
# packages/platform, packages/sidecar*, tools/pack, tools/dev). A bot approval
# can't satisfy the code-owner gate, so a core-maintainer must approve. Once they
# do, the armed merge queue squashes it in automatically — no manual file editing,
# label cleanup, or enqueue. (release/v* has require_code_owner_review=false,
# which is why backports CAN auto-approve.)

on:
  workflow_run:
    workflows: ["release-stable"]
    types: [completed]
  workflow_dispatch:
    inputs:
      tag:
        description: 'Stable release tag to finalize, e.g. open-design-v0.12.0'
        required: true
        default: ''

permissions:
  contents: read               # actual writes go through the App token below

jobs:
  finalize:
    if: >-
      github.repository == 'nexu-io/open-design' &&
      (github.event_name == 'workflow_dispatch' ||
       github.event.workflow_run.conclusion == 'success')
    runs-on: ubuntu-latest
    steps:
      - uses: actions/create-github-app-token@v2
        id: app
        with:
          app-id: ${{ secrets.RELEASE_BOT_APP_ID }}
          private-key: ${{ secrets.RELEASE_BOT_PRIVATE_KEY }}

      - name: Resolve the shipped version (latest published stable, or the dispatch tag)
        id: ver
        env:
          GH_TOKEN: ${{ steps.app.outputs.token }}
          EVENT: ${{ github.event_name }}
          INPUT_TAG: ${{ inputs.tag }}
        run: |
          set -euo pipefail
          # workflow_dispatch backfill -> finalize the exact tag asked for.
          # workflow_run -> the latest published release, which release-stable marked --latest;
          # NEVER parse workflow_run.head_branch (it can be the dispatch ref, not the built
          # release branch, when release-stable runs with a `ref` input).
          if [ "$EVENT" = "workflow_dispatch" ]; then
            req="$INPUT_TAG"
            case "$req" in open-design-v*) : ;; *) req="open-design-v$req" ;; esac   # allow a bare X.Y.Z
            state=$(gh release view "$req" --repo nexu-io/open-design --json tagName,isDraft,isPrerelease 2>/dev/null || echo '')
          else
            state=$(gh release view --repo nexu-io/open-design --json tagName,isDraft,isPrerelease 2>/dev/null || echo '')
          fi
          if [ -z "$state" ]; then
            echo "No release to finalize (no published stable / dry-run / not shipped)."
            echo "skip=true" >> "$GITHUB_OUTPUT"; exit 0
          fi
          tag=$(printf '%s' "$state" | jq -r '.tagName')
          draft=$(printf '%s' "$state" | jq -r '.isDraft')
          pre=$(printf '%s' "$state" | jq -r '.isPrerelease')
          ver="${tag#open-design-v}"
          # Only a published (draft=false), non-prerelease, open-design-vX.Y.Z release finalizes.
          # On a dry-run the latest published release is the previous (already-finalized) stable,
          # which the bump idempotency + tolerant label delete below turn into a clean no-op.
          if [ "$draft" != "false" ] || [ "$pre" != "false" ] || ! printf '%s' "$ver" | grep -Eq '^[0-9]+\.[0-9]+\.[0-9]+$'; then
            echo "Latest release '$tag' is draft=$draft prerelease=$pre — not a stable X.Y.Z; skipping."
            echo "skip=true" >> "$GITHUB_OUTPUT"; exit 0
          fi
          major=${ver%%.*}; rest=${ver#*.}; minor=${rest%%.*}; patch=${rest##*.}
          next="${major}.${minor}.$((patch+1))"
          {
            echo "skip=false"
            echo "version=$ver"
            echo "next=$next"
            echo "branch=release-bot/bump-main-v$next"
          } >> "$GITHUB_OUTPUT"
          echo "Shipped stable v$ver -> bump main to v$next"

      - name: Checkout main
        if: steps.ver.outputs.skip != 'true'
        uses: actions/checkout@v4
        with:
          ref: main            # we bump main, regardless of which ref the release tag points at
          fetch-depth: 0
          token: ${{ steps.app.outputs.token }}

      - uses: actions/setup-node@v4
        if: steps.ver.outputs.skip != 'true'
        with:
          node-version: 24

      - name: Delete the shipped release's backport label
        if: steps.ver.outputs.skip != 'true'
        env:
          GH_TOKEN: ${{ steps.app.outputs.token }}
          VERSION: ${{ steps.ver.outputs.version }}
        run: |
          set -euo pipefail
          label="backport release/v$VERSION"
          if gh label list --repo nexu-io/open-design --json name --jq '.[].name' | grep -qxF "$label"; then
            gh label delete "$label" --repo nexu-io/open-design --yes
            echo "Deleted label: $label"
          else
            echo "Label '$label' not present; nothing to delete."
          fi

      - name: Bump main's synchronized workspace versions
        id: bump
        if: steps.ver.outputs.skip != 'true'
        env:
          NEXT: ${{ steps.ver.outputs.next }}
        run: |
          set -euo pipefail
          current=$(node -p "require('./package.json').version")
          # Idempotency: only ever move main forward. If main is already at or ahead
          # of NEXT (re-run, or a later cut already moved it), do nothing.
          lower=$(printf '%s\n%s\n' "$current" "$NEXT" | sort -V | head -1)
          if [ "$current" = "$NEXT" ] || [ "$lower" = "$NEXT" ]; then
            echo "main is at $current (>= $NEXT); no bump needed."
            echo "changed=false" >> "$GITHUB_OUTPUT"
            exit 0
          fi
          # Bump only the synchronized set: every workspace package.json whose version
          # equals the current monorepo version. Independently-versioned packages
          # (telemetry-worker, components, agui-adapter, tools/serve, …) keep their own
          # version. `npm pkg set version` touches only the top-level "version" field,
          # never a pinned dependency that happens to share the number (e.g. @xterm/addon-fit).
          changed=0
          for f in package.json apps/*/package.json packages/*/package.json tools/*/package.json e2e/package.json; do
            [ -f "$f" ] || continue
            v=$(node -p "require('./$f').version" 2>/dev/null || echo '')
            if [ "$v" = "$current" ]; then
              ( cd "$(dirname "$f")" && npm pkg set version="$NEXT" )
              changed=$((changed+1))
            fi
          done
          echo "Bumped $changed manifests from $current to $NEXT."
          echo "changed=true" >> "$GITHUB_OUTPUT"

      - name: Open the bump PR, arm the merge queue, request review
        if: steps.ver.outputs.skip != 'true' && steps.bump.outputs.changed == 'true'
        env:
          GH_TOKEN: ${{ steps.app.outputs.token }}
          VERSION: ${{ steps.ver.outputs.version }}
          NEXT: ${{ steps.ver.outputs.next }}
          BRANCH: ${{ steps.ver.outputs.branch }}
        run: |
          set -euo pipefail
          if git ls-remote --exit-code --heads origin "$BRANCH" >/dev/null 2>&1; then
            echo "::warning::$BRANCH already exists; a bump PR is likely already open. Skipping."
            exit 0
          fi
          git config user.name  'open-design-release-bot[bot]'
          git config user.email 'open-design-release-bot[bot]@users.noreply.github.com'
          git switch -c "$BRANCH"
          git commit -am "chore(release): bump main to $NEXT ahead of stable $VERSION"
          git push origin "$BRANCH"
          head_sha=$(git rev-parse HEAD)
          body=$(printf '%s\n' \
            "Automated by \`finalize-release\` after publishing \`open-design-v$VERSION\`." \
            "" \
            "Keeps \`main\` strictly ahead of the shipped stable tag — the build guard requires \`apps/packaged\` version to be greater than the latest \`open-design-v*\` tag. Bumps only the synchronized workspace manifests (those already sharing the monorepo version); independently-versioned packages are left untouched." \
            "" \
            "The \`backport release/v$VERSION\` label was already deleted by this same run." \
            "" \
            "**Needs one core-maintainer approval:** this touches CODEOWNERS-owned release manifests, so \`main\`'s code-owner rule requires a human review (a bot approval can't satisfy it). The merge queue is already armed — approve and it squashes in automatically.")
          pr=$(gh pr create --repo nexu-io/open-design --base main --head "$BRANCH" \
            --title "chore(release): bump main to $NEXT ahead of stable $VERSION" \
            --body "$body")
          echo "Opened $pr"
          # Request the code owners who must approve (best-effort; never fail finalize on a hiccup).
          gh pr edit "$pr" --repo nexu-io/open-design --add-reviewer nexu-io/core-maintainers || \
            echo "::warning::could not request nexu-io/core-maintainers review on $pr"
          # main is a squash merge queue; --auto arms enqueue-on-green (proven by
          # bake-plugin-previews-automerge — allow_auto_merge=false does not block the queue).
          # --match-head-commit pins the armed SHA so a later push isn't merged untested.
          gh pr merge "$pr" --repo nexu-io/open-design --squash --auto --match-head-commit "$head_sha"