name: Nightly rexglue-sdk

on:
  schedule:
    - cron: "0 6 * * *"
  workflow_dispatch: {}

permissions:
  contents: write
  actions: write

env:
  DEV_BRANCH: development
  NIGHTLY_TAG_PREFIX: nightly-
  NIGHTLY_RETENTION: 10
  RELEASE_LIST_LIMIT: 1000

jobs:
  check:
    runs-on: ubuntu-latest
    outputs:
      should_build: ${{ steps.compare.outputs.should_build }}
      dev_sha: ${{ steps.compare.outputs.dev_sha }}
      prev_nightly_sha: ${{ steps.compare.outputs.prev_nightly_sha }}
      tag_name: ${{ steps.compare.outputs.tag_name }}
    steps:
      - name: Checkout dev branch
        uses: actions/checkout@v6
        with:
          ref: ${{ env.DEV_BRANCH }}
          fetch-depth: 1

      - name: Compare dev HEAD to most recent nightly
        id: compare
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          dev_sha=$(git rev-parse HEAD)
          short_sha="${dev_sha:0:8}"
          tag_name="${NIGHTLY_TAG_PREFIX}$(date -u +%Y%m%d)-${short_sha}"
          echo "dev_sha=${dev_sha}" >> "$GITHUB_OUTPUT"
          echo "tag_name=${tag_name}" >> "$GITHUB_OUTPUT"
          prev_release=$(gh release list --limit "${RELEASE_LIST_LIMIT}" \
            --json tagName,isPrerelease,createdAt \
            | jq -r --arg prefix "${NIGHTLY_TAG_PREFIX}" \
                '[.[] | select(.isPrerelease) | select(.tagName | startswith($prefix))]
                  | sort_by(.createdAt) | last | .tagName // ""' \
            2>/dev/null || echo "")
          if [ -n "${prev_release}" ]; then
            prev_sha=$(gh release view "${prev_release}" --json targetCommitish -q .targetCommitish 2>/dev/null || echo "")
          else
            prev_sha=""
          fi
          echo "prev_nightly_sha=${prev_sha}" >> "$GITHUB_OUTPUT"
          if [ "${dev_sha}" = "${prev_sha}" ]; then
            echo "${DEV_BRANCH} unchanged since last nightly (${dev_sha}); skipping build."
            echo "should_build=false" >> "$GITHUB_OUTPUT"
          else
            echo "${DEV_BRANCH} advanced (${prev_sha:-<no prior nightly>} -> ${dev_sha}); building as ${tag_name}."
            echo "should_build=true" >> "$GITHUB_OUTPUT"
          fi

  build-win-amd64:
    needs: check
    if: needs.check.outputs.should_build == 'true'
    uses: ./.github/workflows/_build-platform.yaml
    with:
      platform: win-amd64
      ref: ${{ needs.check.outputs.dev_sha }}
      publish_mode: artifact
      artifact_name: nightly-win-amd64
    secrets: inherit

  build-linux-amd64:
    needs: check
    if: needs.check.outputs.should_build == 'true'
    uses: ./.github/workflows/_build-platform.yaml
    with:
      platform: linux-amd64
      ref: ${{ needs.check.outputs.dev_sha }}
      publish_mode: artifact
      artifact_name: nightly-linux-amd64
    secrets: inherit

  build-linux-arm64:
    needs: check
    if: needs.check.outputs.should_build == 'true'
    uses: ./.github/workflows/_build-platform.yaml
    with:
      platform: linux-arm64
      ref: ${{ needs.check.outputs.dev_sha }}
      publish_mode: artifact
      artifact_name: nightly-linux-arm64
    secrets: inherit

  publish:
    needs: [check, build-win-amd64, build-linux-amd64, build-linux-arm64]
    if: needs.check.outputs.should_build == 'true'
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v6
        with:
          ref: ${{ needs.check.outputs.dev_sha }}
          fetch-depth: 0

      - name: Download all artifacts
        uses: actions/download-artifact@v8
        with:
          path: artifacts

      - name: Publish nightly release
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          VERSION: ${{ needs.build-win-amd64.outputs.version }}
          DEV_SHA: ${{ needs.check.outputs.dev_sha }}
          PREV_SHA: ${{ needs.check.outputs.prev_nightly_sha }}
          TAG_NAME: ${{ needs.check.outputs.tag_name }}
        run: |
          if [ -n "${PREV_SHA}" ] && git cat-file -e "${PREV_SHA}^{commit}" 2>/dev/null; then
            commits=$(git log --no-merges --pretty='format:- %s (%h)' "${PREV_SHA}..${DEV_SHA}")
            range_header="Changes since previous nightly (\`${PREV_SHA:0:8}\`):"
          else
            commits=$(git log --no-merges --pretty='format:- %s (%h)' -20 "${DEV_SHA}")
            range_header="Latest commits on \`${DEV_BRANCH}\`:"
          fi
          if [ -z "${commits}" ]; then
            commits="- (no new commits)"
          fi
          notes=$(printf '%s\n\n%s\n' "${range_header}" "${commits}")
          gh release create "${TAG_NAME}" \
            --target "${DEV_SHA}" \
            --title "Nightly ${VERSION}" \
            --notes "${notes}" \
            --prerelease \
            artifacts/nightly-win-amd64/*.zip \
            artifacts/nightly-linux-amd64/*.zip \
            artifacts/nightly-linux-arm64/*.zip

      - name: Prune old nightlies
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          gh release list --limit "${RELEASE_LIST_LIMIT}" \
            --json tagName,isPrerelease,createdAt \
            | jq -r --arg prefix "${NIGHTLY_TAG_PREFIX}" --argjson keep "${NIGHTLY_RETENTION}" \
                '[.[] | select(.isPrerelease) | select(.tagName | startswith($prefix))]
                  | sort_by(.createdAt) | reverse | .[$keep:] | .[].tagName' \
            | while IFS= read -r tag; do
                [ -z "${tag}" ] && continue
                echo "Pruning ${tag}"
                gh release delete "${tag}" --yes --cleanup-tag
              done