name: Update Release

on:
  push:
    tags:
      - 'v*.*.*'
  workflow_dispatch:
    inputs:
      tag:
        description: Semantic version tag to publish, with or without leading v. Defaults to the current tag ref when dispatched from a tag.
        required: false
  workflow_call:
    inputs:
      tag:
        description: Semantic version tag to publish, with or without leading v. When omitted, the current tag ref is used.
        required: false
        default: ''
        type: string

jobs:
  release:
    runs-on: ubuntu-latest
    container: docker.io/catthehacker/ubuntu:act-latest
    outputs:
      tag: ${{ steps.publish.outputs.tag }}
      version: ${{ steps.publish.outputs.version }}
    defaults:
      run:
        shell: bash
    env:
      RELEASE_TOKEN: ${{ secrets.RELEASE_PAT }}
      SUMMARY_FILE: ${{ runner.temp }}/update-release-summary.md
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Fetch and detect release tag
        id: detect-tag
        run: |
          set -euo pipefail

          # Fetch all tags from origin first
          git fetch origin --tags --force --quiet 2>/dev/null || true
          
          # Check if HEAD is at a tag (prepare-release may have just tagged it)
          if head_tag="$(git describe --exact-match --tags HEAD 2>/dev/null)" && [[ -n "$head_tag" ]]; then
            echo "detected_tag=$head_tag" >> "$GITHUB_OUTPUT"
            exit 0
          fi
          
          # Fall back to finding the most recent tag
          if latest_tag="$(git describe --tags --abbrev=0 2>/dev/null)" && [[ -n "$latest_tag" ]]; then
            echo "detected_tag=$latest_tag" >> "$GITHUB_OUTPUT"
          fi

      - name: Resolve release version
        id: resolve-version
        env:
          INPUT_TAG: ${{ inputs.tag }}
          DETECTED_TAG: ${{ steps.detect-tag.outputs.detected_tag }}
        run: |
          set -euo pipefail

          normalize_candidate() {
            local raw="$1"

            raw="$(printf '%s' "$raw" | sed 's/^[[:space:]]\+//; s/[[:space:]]\+$//')"

            # Teacup can surface expression strings as %!t(string=value); unwrap it.
            if [[ "$raw" =~ ^%\!t\(string=(.*)\)$ ]]; then
              raw="${BASH_REMATCH[1]}"
            fi

            raw="$(printf '%s' "$raw" | sed 's/^[[:space:]]\+//; s/[[:space:]]\+$//')"
            printf '%s' "$raw"
          }

          input_tag="$(normalize_candidate "${INPUT_TAG}")"
          detected_tag="$(normalize_candidate "${DETECTED_TAG}")"

          # Try explicit input first.
          requested_tag="$input_tag"
          
          # Fall back to detected tag if neither input nor caller tag is available.
          if [[ -z "$requested_tag" && -n "$detected_tag" ]]; then
            requested_tag="$detected_tag"
          fi
          
          # Try GITHUB_REF if still empty
          if [[ -z "$requested_tag" && "$GITHUB_REF" == refs/tags/* ]]; then
            requested_tag="${GITHUB_REF#refs/tags/}"
          fi
          
          if [[ -n "$requested_tag" ]]; then
            # Normalize to v-prefixed format
            normalized="${requested_tag#v}"
            tag="v${normalized}"
          else
            echo "Error: Could not resolve release version" >&2
            echo "  - inputs.tag(raw): '$INPUT_TAG'" >&2
            echo "  - detected_tag(raw): '${DETECTED_TAG}'" >&2
            echo "  - GITHUB_REF: '$GITHUB_REF'" >&2
            exit 1
          fi

          echo "tag=${tag}" >> "$GITHUB_OUTPUT"
          echo "version=${normalized}" >> "$GITHUB_OUTPUT"

      - name: Checkout release tag
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
          ref: refs/tags/${{ steps.resolve-version.outputs.tag }}

      - name: Setup Go
        uses: actions/setup-go@v5
        with:
          go-version-file: go.mod
          check-latest: false
          cache: true
          cache-dependency-path: go.sum

      - name: Install UPX
        uses: crazy-max/ghaction-upx@v3
        with:
          install-only: true

      - name: Preflight release API access
        env:
          TAG_NAME: ${{ steps.resolve-version.outputs.tag }}
        run: |
          set -euo pipefail

          if [[ -z "${RELEASE_TOKEN:-}" ]]; then
            echo "No release token available. Set secrets.RELEASE_PAT." >&2
            exit 1
          fi

          api_base="${GITHUB_API_URL:-${GITHUB_SERVER_URL%/}/api/v1}"
          repo_api="${api_base}/repos/${GITHUB_REPOSITORY}"

          curl --fail-with-body -sS \
            -H "Authorization: token ${RELEASE_TOKEN}" \
            -H "Content-Type: application/json" \
            "${repo_api}" >/dev/null

          curl --fail-with-body -sS \
            -H "Authorization: token ${RELEASE_TOKEN}" \
            -H "Content-Type: application/json" \
            "${repo_api}/releases?limit=1" >/dev/null

          if ! git rev-parse --verify --quiet "refs/tags/${TAG_NAME}" >/dev/null; then
            echo "Tag ${TAG_NAME} was not found in the checked out repository." >&2
            exit 1
          fi

      - name: Create or update release
        id: publish
        uses: ./publish
        with:
          token: ${{ secrets.RELEASE_PAT }}
          version: ${{ steps.resolve-version.outputs.version }}

      - name: Build release binaries
        env:
          RELEASE_VERSION: ${{ steps.publish.outputs.version }}
        run: |
          set -euo pipefail

          upx_cmd=""
          if command -v upx >/dev/null 2>&1; then
            upx_cmd=upx
          elif command -v upx-ucl >/dev/null 2>&1; then
            upx_cmd=upx-ucl
          else
            echo "UPX is not available on PATH after install step; continuing without binary compression." >&2
          fi

          mkdir -p dist

          for target in linux/amd64 linux/arm64; do
            os="${target%/*}"
            arch="${target#*/}"

            bin="vociferate_${RELEASE_VERSION}_${os}_${arch}"
            GOOS="$os" GOARCH="$arch" go build -trimpath -ldflags="-s -w" -o "dist/${bin}" ./cmd/vociferate
            if [[ -n "${upx_cmd}" ]]; then
              "${upx_cmd}" --best --lzma "dist/${bin}"
            fi
          done

          (
            cd dist
            shasum -a 256 * > checksums.txt
          )

      - name: Upload release binaries
        env:
          RELEASE_ID: ${{ steps.publish.outputs.release-id }}
          RELEASE_VERSION: ${{ steps.publish.outputs.version }}
        run: |
          set -euo pipefail

          raw_release_id="$(printf '%s' "${RELEASE_ID:-}" | sed 's/^[[:space:]]\+//; s/[[:space:]]\+$//')"
          if [[ "$raw_release_id" =~ ^%\!t\(string=(.*)\)$ ]]; then
            raw_release_id="${BASH_REMATCH[1]}"
          fi

          release_id="$(printf '%s' "$raw_release_id" | sed 's/^[[:space:]]\+//; s/[[:space:]]\+$//')"
          if ! [[ "$release_id" =~ ^[0-9]+$ ]]; then
            echo "Invalid release id from publish step: '${RELEASE_ID}'" >&2
            exit 1
          fi

          release_detail_api="${GITHUB_API_URL:-${GITHUB_SERVER_URL%/}/api/v1}/repos/${GITHUB_REPOSITORY}/releases/${release_id}"
          if ! curl --fail-with-body -sS \
            -H "Authorization: token ${RELEASE_TOKEN}" \
            -H "Content-Type: application/json" \
            "$release_detail_api" >/dev/null; then
            echo "Resolved release endpoint is not accessible: ${release_detail_api}" >&2
            exit 1
          fi

          release_api="${GITHUB_API_URL:-${GITHUB_SERVER_URL%/}/api/v1}/repos/${GITHUB_REPOSITORY}/releases/${release_id}/assets"

          for asset in dist/*; do
            name="$(basename "$asset")"

            assets_json="$(curl -sS --fail-with-body \
              -H "Authorization: token ${RELEASE_TOKEN}" \
              -H "Content-Type: application/json" \
              "${release_api}")"

            escaped_name="$(printf '%s' "$name" | sed 's/[][(){}.^$*+?|\\/]/\\&/g')"
            existing_asset_id="$(printf '%s' "$assets_json" | tr -d '\n' | sed -n "s/.*{\"id\":\([0-9][0-9]*\)[^}]*\"name\":\"${escaped_name}\".*/\1/p")"

            if [[ -n "$existing_asset_id" ]]; then
              curl --fail-with-body \
                -X DELETE \
                -H "Authorization: token ${RELEASE_TOKEN}" \
                -H "Content-Type: application/json" \
                "${release_api}/${existing_asset_id}"
            fi

            curl --fail-with-body \
              -X POST \
              -H "Authorization: token ${RELEASE_TOKEN}" \
              -H "Content-Type: application/octet-stream" \
              "${release_api}?name=${name}" \
              --data-binary "@${asset}"
          done

      - name: Summary
        if: ${{ always() }}
        env:
          TAG_NAME: ${{ steps.publish.outputs.tag }}
          RELEASE_VERSION: ${{ steps.publish.outputs.version }}
          PUBLISH_OUTCOME: ${{ steps.publish.outcome }}
        run: |
          set -euo pipefail

          if [[ "${PUBLISH_OUTCOME}" == "success" ]]; then
            {
              echo "## Release Published"
              echo
              echo "- Tag: ${TAG_NAME}"
              echo "- Release notes sourced from changelog entry ${RELEASE_VERSION}."
              echo "- Published assets: vociferate_${RELEASE_VERSION}_linux_amd64, vociferate_${RELEASE_VERSION}_linux_arm64, checksums.txt"
              echo "- Release binaries are compressed with UPX from crazy-max/ghaction-upx@v3 when available, otherwise uploaded uncompressed."
            } >> "$SUMMARY_FILE"
          else
            {
              echo "## Release Failed"
              echo
              echo "- Tag: ${TAG_NAME:-unknown}"
              echo "- Create or update release step did not complete successfully."
            } >> "$SUMMARY_FILE"
          fi

          echo 'Summary'
          echo

          if [[ -s "$SUMMARY_FILE" ]]; then
            cat "$SUMMARY_FILE"
          else
            echo 'No summary generated.'
          fi

  validate:
    runs-on: ubuntu-latest
    container: docker.io/catthehacker/ubuntu:act-latest
    needs: release
    strategy:
      fail-fast: false
      matrix:
        include:
          - asset_arch: amd64
            run_command: ./vociferate
          - asset_arch: arm64
            run_command: qemu-aarch64-static ./vociferate
    defaults:
      run:
        shell: bash
    env:
      SUMMARY_FILE: ${{ runner.temp }}/update-release-validate-summary.md
    steps:
      - name: Checkout tagged revision
        uses: actions/checkout@v4
        with:
          ref: refs/tags/${{ needs.release.outputs.tag }}

      - name: Install arm64 emulator
        if: ${{ matrix.asset_arch == 'arm64' }}
        run: |
          set -euo pipefail
          apt-get update
          apt-get install -y qemu-user-static

      - name: Download released binary
        env:
          TOKEN: ${{ secrets.RELEASE_PAT }}
          TAG_NAME: ${{ needs.release.outputs.tag }}
          RELEASE_VERSION: ${{ needs.release.outputs.version }}
          ASSET_ARCH: ${{ matrix.asset_arch }}
          SERVER_URL: ${{ github.server_url }}
        run: |
          set -euo pipefail

          asset_name="vociferate_${RELEASE_VERSION}_linux_${ASSET_ARCH}"
          asset_url="${SERVER_URL}/aether/vociferate/releases/download/${TAG_NAME}/${asset_name}"

          curl --fail --location \
            -H "Authorization: token ${TOKEN}" \
            -o vociferate \
            "$asset_url"
          chmod +x vociferate

          echo "asset_name=${asset_name}" >> "$GITHUB_ENV"

      - name: Smoke test released binary
        env:
          RUN_COMMAND: ${{ matrix.run_command }}
          TAG_NAME: ${{ needs.release.outputs.tag }}
        run: |
          set -euo pipefail

          ${RUN_COMMAND} --help >/dev/null

          recommend_stderr="$(mktemp)"
          if ${RUN_COMMAND} --recommend --root . >/dev/null 2>"${recommend_stderr}"; then
            echo "Expected --recommend to fail on the tagged release checkout" >&2
            exit 1
          fi

          recommend_error="$(cat "${recommend_stderr}")"
          case "${recommend_error}" in
            *"unreleased section is empty"*)
              ;;
            *)
              echo "Unexpected recommend failure output: ${recommend_error}" >&2
              exit 1
              ;;
          esac

          {
            echo "## Released Binary Validation (${{ matrix.asset_arch }})"
            echo
            echo "- Release tag: ${TAG_NAME}"
            echo "- Asset: ${asset_name}"
            echo "- Binary executed successfully via --help."
            echo "- --recommend failed as expected on the tagged checkout because Unreleased is empty."
          } >> "$SUMMARY_FILE"

      - name: Summary
        if: ${{ always() }}
        run: |
          set -euo pipefail

          echo 'Summary'
          echo

          if [[ -s "$SUMMARY_FILE" ]]; then
            cat "$SUMMARY_FILE"
          else
            echo 'No summary generated.'
          fi