name: canary / publish

# Discoverable, one-click canary publisher. Surfaces in the Actions tab so any
# maintainer can publish a prerelease of the branch they're working on without
# learning the manual `canary/*` branch + dispatch dance.
#
# IMPORTANT: this workflow does NOT publish to npm itself. It ORCHESTRATES
# publish-release.yml, which holds the SINGLE npm OIDC trusted-publisher binding
# (see that file's header). Adding a second npm-publishing entry point would
# break OIDC for every @copilotkit/* package. The npm trusted publishers for
# the @copilotkit packages are bound to publish-release.yml + the `npm`
# environment.
#
# Why a separate orchestrator instead of a flag inside publish-release.yml:
#   The `npm` GitHub Environment's deployment-branch policy is evaluated against
#   the ref a run is TRIGGERED on — NOT against branches created mid-run. So
#   publish-release.yml can only publish a canary when its run's ref already
#   matches the policy (`canary/*`). Creating a branch inside a run triggered on
#   `feature/*` does not change that run's ref, so it would still be rejected.
#   This workflow therefore runs on any non-main branch, mirrors it to a
#   short-lived `canary/<slug>` ref, dispatches publish-release.yml ON that ref
#   (clearing the env gate), waits for it, then deletes the ref.
#
# Token: the branch create/delete and the cross-workflow dispatch use the
# devops-bot GitHub App token, NOT the default GITHUB_TOKEN. Events authenticated
# with GITHUB_TOKEN do not start new workflow runs (recursion prevention), so the
# delegated publish-release run would silently never fire.

on:
  workflow_dispatch:
    inputs:
      scope:
        description: "Package scope to publish a canary for. Regenerated from release.config.json — do NOT hand-edit (the release-scope-dropdown-sync CI guard enforces parity)."
        required: true
        type: choice
        options:
          - monorepo
          - angular
          - channels
          - channels-discord
          - channels-intelligence
          - channels-slack
          - channels-teams
          - channels-telegram
          - channels-whatsapp
      suffix:
        description: "Prerelease suffix (e.g. 'fix-user-issue'); blank = unix timestamp. Allowed: [a-zA-Z0-9._-]+. Reuse a suffix only if the base version moved, else the publish collides."
        required: false
        type: string
      dry_run:
        # NOTE: this orchestrator exposes `dry_run` (underscore, matching ag-ui's
        # convention), but publish-release.yml's input is `dry-run` (hyphen).
        # The dispatch step below maps `dry_run` → `-f dry-run=` accordingly.
        description: "Dry run: build + detect but do NOT publish to npm. Useful for previewing what would ship."
        required: false
        default: false
        type: boolean

concurrency:
  # Serialize repeated dispatches on the same source branch FOR THE SAME SCOPE.
  # Cross-branch ref races are independently prevented by making the canary ref
  # unique per run (slug + github.run_id, see the slug step below).
  # The scope is folded into the key so canaries for different scopes (e.g.
  # `monorepo` vs `angular`) on the same branch run in independent lanes instead
  # of queuing behind each other (cancel-in-progress: false).
  group: canary-publish-${{ inputs.scope }}-${{ github.ref }}
  cancel-in-progress: false

permissions:
  # The job's own GITHUB_TOKEN does nothing privileged — every write goes through
  # the App token minted below.
  contents: read

jobs:
  canary:
    runs-on: ubuntu-latest
    # The delegated publish-release run can take up to ~40 min worst case
    # (build ~20 + publish ~20); this orchestrator's ceiling must exceed it,
    # otherwise a timeout-kill triggers ref cleanup mid-publish (yanking the
    # canary ref out from under a still-running publish). publish-release.yml
    # also carries a GLOBAL `concurrency: group: publish-release,
    # cancel-in-progress: false`, so our delegated run can sit QUEUED behind
    # an unrelated release for a long time before it even starts; the ceiling
    # must budget that queue time on top of the ~40-min worst case.
    timeout-minutes: 90
    steps:
      - name: Guard ref
        # Canary publishes are for non-main BRANCHES only. Block main (use the
        # stable release flow) and block non-branch refs such as tags (a tag
        # dispatch would otherwise canary-publish from the tagged commit).
        if: github.ref == 'refs/heads/main' || !startsWith(github.ref, 'refs/heads/')
        # Pass github.ref via env (matches "Validate suffix" discipline) so the
        # ref name is never interpolated into the shell — tag/branch names may
        # contain shell metacharacters and direct ${{ }} interpolation here
        # would be an expression-injection sink.
        env:
          REF: ${{ github.ref }}
        run: |
          echo "::error::Canary publishes are for non-main branches only (got '$REF'). To release from main, use the 'release / create-pr' workflow (stable-release.yml) → merge the release PR, or 'release / publish' with mode=stable for retries."
          exit 1

      - name: Validate suffix
        if: inputs.suffix != ''
        env:
          SUFFIX: ${{ inputs.suffix }}
        run: |
          set -euo pipefail
          # Validate BEFORE any side effect (token mint, ref creation) so a bad
          # suffix can't leave an orphaned canary ref behind. Bash regex matches
          # the WHOLE string (grep matches per line and would accept a multi-line
          # value whose first line is valid).
          if ! [[ "$SUFFIX" =~ ^[a-zA-Z0-9._-]+$ ]]; then
            echo "::error::Invalid suffix '$SUFFIX'. Allowed: [a-zA-Z0-9._-]+ (blank = unix timestamp)."
            exit 1
          fi

      - name: Mint devops-bot token
        id: app-token
        uses: actions/create-github-app-token@bcd2ba49218906704ab6c1aa796996da409d3eb1 # v3.2.0
        with:
          app-id: 1108748
          private-key: ${{ secrets.DEVOPS_BOT_PRIVATE_KEY }}
          # Scoped permissions (v3+): contents=write for create/delete of the
          # canary ref; actions=write to dispatch publish-release.yml and watch
          # the delegated run. No other scopes are needed.
          permission-contents: write
          permission-actions: write

      - name: Compute canary branch name
        id: slug
        env:
          REF_NAME: ${{ github.ref_name }}
        run: |
          set -euo pipefail
          # Byte-deterministic (LC_ALL=C) transform collapsing the source ref to a
          # single path segment under canary/ so it matches the `canary/*`
          # deployment-branch policy. tr -s collapses same-char runs (so no `..`),
          # and the sed fully strips any leading/trailing `.`/`-` runs.
          export LC_ALL=C
          SLUG=$(printf '%s' "$REF_NAME" | tr '/' '-' | tr -c 'a-zA-Z0-9._-' '-' | tr -s '.-')
          SLUG=$(printf '%s' "$SLUG" | sed -E 's/^[.-]+//; s/[.-]+$//')
          if [ -z "$SLUG" ]; then
            echo "::error::Could not derive a canary slug from ref '$REF_NAME'"
            exit 1
          fi
          # Append run id AND attempt so every dispatch — including a re-run of
          # this same orchestration — owns a UNIQUE canary ref. This prevents two
          # dispatches whose source branches slugify to the same value (or a
          # re-run reusing the run id) from racing one shared ref, and keeps run
          # discovery below unambiguous (exactly one publish run per ref).
          REF_SUFFIX="${GITHUB_RUN_ID}-${GITHUB_RUN_ATTEMPT}"
          echo "branch=canary/${SLUG}-${REF_SUFFIX}" >> "$GITHUB_OUTPUT"
          echo "Canary branch: canary/${SLUG}-${REF_SUFFIX}"

      - name: Create or update canary ref
        env:
          GH_TOKEN: ${{ steps.app-token.outputs.token }}
          BRANCH: ${{ steps.slug.outputs.branch }}
          SHA: ${{ github.sha }}
        run: |
          set -euo pipefail
          # Point canary/<slug> at the dispatched ref's HEAD. The ref is unique
          # per run AND attempt (slug + run_id + run_attempt — re-runs increment
          # the attempt), so the "already exists" arm is defense-in-depth and
          # should be unreachable in practice. Force-update only on that specific
          # error; any OTHER failure (auth, rate limit, 5xx) must surface, not be
          # silently retried.
          ERR=$(mktemp)
          if gh api --silent -X POST "repos/${GITHUB_REPOSITORY}/git/refs" \
              -f ref="refs/heads/${BRANCH}" -f sha="$SHA" 2>"$ERR"; then
            echo "Created ${BRANCH} at ${SHA}"
          elif grep -qi "already exists" "$ERR"; then
            echo "Ref ${BRANCH} already exists; force-updating to ${SHA}"
            gh api --silent -X PATCH "repos/${GITHUB_REPOSITORY}/git/refs/heads/${BRANCH}" \
              -f sha="$SHA" -F force=true
          else
            echo "::error::Failed to create canary ref ${BRANCH}:"
            cat "$ERR" >&2
            exit 1
          fi

      - name: Dispatch publish-release.yml on the canary ref and wait
        id: dispatch
        env:
          GH_TOKEN: ${{ steps.app-token.outputs.token }}
          BRANCH: ${{ steps.slug.outputs.branch }}
          SCOPE: ${{ inputs.scope }}
          SUFFIX: ${{ inputs.suffix }}
          DRY_RUN: ${{ inputs.dry_run }}
        run: |
          set -euo pipefail
          # (suffix already validated in the "Validate suffix" step above, before
          # the canary ref was created)
          #
          # Input name mapping: this orchestrator's `dry_run` (underscore) maps
          # to publish-release.yml's `dry-run` (hyphen). Keep both as-is — the
          # underscore matches ag-ui's convention; the hyphen matches cpk's
          # existing publish-release.yml signature.
          gh workflow run publish-release.yml \
            --repo "$GITHUB_REPOSITORY" \
            --ref "$BRANCH" \
            -f mode=prerelease \
            -f scope="$SCOPE" \
            -f suffix="$SUFFIX" \
            -f dry-run="$DRY_RUN"

          # The dispatch went through. If anything from here on fails BEFORE a run
          # is located, the cleanup step keeps the ref (a dispatched-but-unindexed
          # run may still need it). If the dispatch itself had failed, no run can
          # exist and the ref is safe to delete.
          echo "dispatched=true" >> "$GITHUB_OUTPUT"
          # Residual race: a cancellation landing in the instant between
          # `gh workflow run` succeeding above and this output write would route
          # cleanup down the "no run exists" path and delete the ref under a
          # queued run. Accepted risk — the delegated canary run fails visibly
          # at checkout and can simply be re-dispatched.

          # The canary ref is unique to this run+attempt, so there is exactly ONE
          # publish-release dispatch on it — no timestamp watermark needed (which
          # also sidesteps runner/server clock-skew). Poll until it indexes
          # (30 x 6s = 3 min tolerance for Actions indexing lag). --limit is
          # defensive headroom; the branch/workflow/event filters are applied
          # server-side so the matching run is never crowded out.
          RUN_ID=""
          ERR=$(mktemp)
          for i in $(seq 1 30); do
            sleep 6
            RUN_ID=$(gh run list \
              --repo "$GITHUB_REPOSITORY" \
              --workflow=publish-release.yml \
              --branch "$BRANCH" \
              --event workflow_dispatch \
              --limit 100 \
              --json databaseId \
              --jq 'sort_by(.databaseId) | last | .databaseId // empty' 2>"$ERR") || {
                RUN_ID=""
                echo "::warning::gh run list failed on attempt ${i}; will retry:" >&2
                cat "$ERR" >&2
              }
            if [ -n "$RUN_ID" ]; then
              break
            fi
          done
          if [ -z "$RUN_ID" ]; then
            echo "::error::Dispatched publish-release run never appeared on ${BRANCH}. Leaving the ref in place for debugging; delete it manually once resolved."
            exit 1
          fi

          # Mark located BEFORE the watch so cleanup runs even if the publish
          # fails — but is skipped entirely if we never tracked a run (so we
          # never delete a ref a still-pending run may need).
          echo "located=true" >> "$GITHUB_OUTPUT"
          echo "run_id=${RUN_ID}" >> "$GITHUB_OUTPUT"

          RUN_URL=$(gh run view "$RUN_ID" --repo "$GITHUB_REPOSITORY" --json url --jq .url)
          echo "Delegated publish run: ${RUN_URL}"
          {
            echo "## Canary publish"
            echo ""
            echo "- **Scope:** \`${SCOPE}\`"
            echo "- **Source branch:** \`${GITHUB_REF_NAME}\`"
            echo "- **Delegated run:** ${RUN_URL}"
          } >> "$GITHUB_STEP_SUMMARY"

          # --exit-status propagates the publish run's failure to this job.
          gh run watch "$RUN_ID" --repo "$GITHUB_REPOSITORY" --exit-status

          # --exit-status catches failures, but a non-failure non-success conclusion
          # (e.g. skipped) exits 0 with nothing published. Require success explicitly.
          CONCLUSION=$(gh run view "$RUN_ID" --repo "$GITHUB_REPOSITORY" --json conclusion --jq .conclusion)
          if [ "$CONCLUSION" != "success" ]; then
            echo "::error::Delegated publish run concluded '$CONCLUSION' (expected 'success')."
            exit 1
          fi

      - name: Mint cleanup token
        id: cleanup-token
        # The job ceiling (90 min) exceeds the 1-hour App-token TTL, so the
        # token minted at job start can be expired by cleanup time. Mint a
        # fresh one. Same condition as the delete step below.
        if: always() && steps.slug.outputs.branch != '' && (steps.dispatch.outputs.located == 'true' || steps.dispatch.outputs.dispatched != 'true')
        uses: actions/create-github-app-token@bcd2ba49218906704ab6c1aa796996da409d3eb1 # v3.2.0
        with:
          app-id: 1108748
          private-key: ${{ secrets.DEVOPS_BOT_PRIVATE_KEY }}
          permission-contents: write
          permission-actions: read

      - name: Delete canary ref
        # Three cases:
        #   (a) Run was located (located=true) → delete the ref; the delegated
        #       publish run has finished (success or fail) and no longer needs it.
        #       Additionally gated below by a live status check on RUN_ID: on
        #       cancellation/timeout (always() runs cleanup too) a still-queued
        #       or running delegated run must keep its branch, since
        #       checkout-by-SHA can fail once the ref is gone.
        #   (b) Dispatch succeeded (dispatched=true) but the run was never located
        #       within the poll window → KEEP the ref; a pending publish run may
        #       still pick it up and would silently break if the ref vanished.
        #   (c) The dispatch command itself failed or this step never ran
        #       (dispatched != 'true') → no publish run can exist, so the ref is
        #       safe to delete (and almost certainly was never created).
        # The `steps.slug.outputs.branch != ''` guard skips cleanup entirely when
        # the slug step never produced a branch name (a guard/suffix failure that
        # bailed before any ref was created). A DELETE on an empty path would
        # 404-gracefully anyway, but skipping avoids the spurious API call.
        if: always() && steps.slug.outputs.branch != '' && (steps.dispatch.outputs.located == 'true' || steps.dispatch.outputs.dispatched != 'true')
        env:
          GH_TOKEN: ${{ steps.cleanup-token.outputs.token }}
          BRANCH: ${{ steps.slug.outputs.branch }}
          RUN_ID: ${{ steps.dispatch.outputs.run_id }}
        run: |
          # Best-effort cleanup: never fail the job on a delete hiccup, but do
          # surface a real error instead of masking every failure as "gone".
          set -uo pipefail
          # If we tracked a delegated run, only delete the ref once that run has
          # completed. always() brings us here on cancellation/timeout too — a
          # still-queued run would fail checkout if its branch (and thus the
          # commit's reachability) disappears from under it.
          if [ -n "${RUN_ID}" ]; then
            STATUS=$(gh run view "$RUN_ID" --repo "$GITHUB_REPOSITORY" --json status --jq .status 2>/dev/null || echo unknown)
            if [ "$STATUS" != "completed" ]; then
              echo "::warning::Delegated run $RUN_ID status is '$STATUS' (not completed); keeping ${BRANCH} — delete it manually once the run finishes."
              exit 0
            fi
          fi
          ERR=$(mktemp)
          if gh api --silent -X DELETE "repos/${GITHUB_REPOSITORY}/git/refs/heads/${BRANCH}" 2>"$ERR"; then
            echo "Deleted ${BRANCH}"
          elif grep -qiE "not found|does not exist" "$ERR"; then
            echo "Branch ${BRANCH} already gone"
          else
            echo "::warning::Failed to delete canary ref ${BRANCH} (manual cleanup may be needed):"
            cat "$ERR" >&2
          fi