name: Nightly Release-Green

# Solution D — continuous, NON-BLOCKING drift signal for the active release branch.
#
# WHY: the full gate (ci.yml) only runs on the release PR (PR → main), so reds
# accrue silently on release/** and explode — in layers — at release time. This
# nightly reproduces the release-equivalent validation on the active release branch
# HEAD and, when there are HARD failures, opens/updates a single tracking issue.
#
# It is NOT a required status check and never touches a contributor PR — it only
# reports. Ratchet drift (eslint warnings / cognitive-complexity / file-size) is
# expected mid-cycle and is reported but never raises the alarm on its own; only
# real defects (typecheck / lint errors / unit / vitest / db-rules / public-creds /
# package-artifact) flip the issue open.

on:
  schedule:
    - cron: "23 5 * * *" # 05:23 UTC daily — off-peak, distinct from other nightlies
  workflow_dispatch:
    inputs:
      branch:
        description: "Release branch to validate (default: highest release/vX.Y.Z)"
        required: false
        type: string

permissions:
  contents: read
  issues: write

concurrency:
  group: nightly-release-green
  cancel-in-progress: true

env:
  OMNIROUTE_SKIP_SYSTEM_TRUST: "1"

jobs:
  release-green:
    name: Validate active release branch
    # Dynamic runner: with USE_VPS_RUNNER=true (release window / on-demand pre-flight)
    # this runs on the dedicated VPS runner — clean env (no operator OMNIROUTE_API_KEY,
    # no local noauth CLIs => zero machine-specific false positives) and no contention.
    # Nightly cron normally finds the var false (VM off) and falls back to hosted.
    runs-on: ${{ (vars.USE_VPS_RUNNER == 'true' && fromJSON('["self-hosted","omni-release"]')) || 'ubuntu-latest' }}
    env:
      JWT_SECRET: ci-nightly-secret-with-sufficient-length-for-validation
      API_KEY_SECRET: ci-nightly-api-key-secret-long
      DISABLE_SQLITE_AUTO_BACKUP: "true"
    steps:
      - uses: actions/checkout@v7
        with:
          fetch-depth: 0
          persist-credentials: false

      - name: Resolve active release branch
        id: branch
        env:
          INPUT_BRANCH: ${{ github.event.inputs.branch }}
        run: |
          set -euo pipefail
          if [ -n "${INPUT_BRANCH:-}" ]; then
            TARGET="$INPUT_BRANCH"
          else
            # highest release/vX.Y.Z by semver among remote branches
            TARGET=$(git for-each-ref --format='%(refname:short)' 'refs/remotes/origin/release/v*' \
              | sed 's#origin/##' \
              | sort -t/ -k2 -V \
              | tail -1)
          fi
          if [ -z "$TARGET" ]; then echo "No release/v* branch found"; exit 1; fi
          # Strict format guard — reject anything that isn't release/vX.Y.Z (blocks
          # ref/command injection via the workflow_dispatch input).
          if ! printf '%s' "$TARGET" | grep -qE '^release/v[0-9]+\.[0-9]+\.[0-9]+$'; then
            echo "Refusing non-canonical branch name: $TARGET"; exit 1
          fi
          echo "target=$TARGET" >> "$GITHUB_OUTPUT"
          echo "Active release branch: $TARGET"

      - name: Checkout the release branch
        env:
          TARGET: ${{ steps.branch.outputs.target }}
        run: |
          set -euo pipefail
          git checkout "$TARGET"
          git log -1 --oneline

      - uses: actions/setup-node@v6
        with:
          node-version: "24"
          cache: npm

      - uses: ./.github/actions/npm-ci-retry

      - name: Release-green validation (full)
        id: validate
        run: |
          set +e
          # --hermetic: scrub live-test trigger vars (self-hosted runner may carry
          # operator env; hosted ignores the unknown flag before #6300 lands).
          node scripts/quality/validate-release-green.mjs --json --with-build --hermetic \
            1> release-green.json 2> release-green.log
          echo "exit=$?" >> "$GITHUB_OUTPUT"
          echo "------- report -------"
          cat release-green.log

      - name: Open / update tracking issue on HARD failure
        if: steps.validate.outputs.exit != '0'
        env:
          GH_TOKEN: ${{ github.token }}
          TARGET: ${{ steps.branch.outputs.target }}
          RUN_URL: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}
        run: |
          set -euo pipefail
          TITLE="🔴 Release branch not green: ${TARGET}"
          {
            echo "The nightly **release-green** validation found HARD failures on \`${TARGET}\`."
            echo "These are real defects that would block the release PR — fix them in the"
            echo "originating PR branch (via co-authorship), not by demanding it from contributors."
            echo ""
            echo "**Run:** ${RUN_URL}"
            echo ""
            echo '```'
            sed -n '/──────── verdict ────────/,$p' release-green.log || tail -40 release-green.log
            echo '```'
            echo ""
            echo "_Ratchet drift (eslint warnings / cognitive-complexity / file-size) listed above is expected mid-cycle and is rebaselined at release — it is NOT a contributor concern and did not, on its own, open this issue._"
          } > issue-body.md

          EXISTING=$(gh issue list --repo "$GITHUB_REPOSITORY" --state open \
            --search "in:title $TITLE" --json number --jq '.[0].number' 2>/dev/null || echo "")
          if [ -n "$EXISTING" ]; then
            gh issue comment "$EXISTING" --repo "$GITHUB_REPOSITORY" --body-file issue-body.md
            echo "Updated existing issue #$EXISTING"
          else
            gh issue create --repo "$GITHUB_REPOSITORY" --title "$TITLE" --body-file issue-body.md
          fi

      - name: Upload report artifact
        if: always()
        uses: actions/upload-artifact@v4
        with:
          name: release-green-report
          path: |
            release-green.json
            release-green.log
          if-no-files-found: ignore