name: Prepare Release

on:
  workflow_dispatch:
    inputs:
      version:
        description: Optional semantic version override, with or without leading v. When omitted, the recommended version is used.
        required: false
  workflow_call:
    inputs:
      version:
        description: Optional semantic version override, with or without leading v. When omitted, the recommended version is used.
        required: false
        default: ''
        type: string

jobs:
  prepare:
    runs-on: ubuntu-latest
    container: docker.io/catthehacker/ubuntu:act-latest
    defaults:
      run:
        shell: bash
    env:
      RELEASE_TOKEN: ${{ secrets.GITHUB_TOKEN }}
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Setup Go
        uses: actions/setup-go@v5
        with:
          go-version: '1.26.1'
          check-latest: true
          cache: true
          cache-dependency-path: go.sum

      - name: Resolve release version
        id: resolve-version
        env:
          INPUT_VERSION: ${{ inputs.version }}
        run: |
          set -euo pipefail

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

          if [[ -n "$provided_version" ]]; then
            release_version="$provided_version"
          else
            if ! release_version="$(go run ./cmd/vociferate --recommend --root . 2>release-recommendation.err)"; then
              recommendation_error="$(tr '\n' ' ' < release-recommendation.err | sed 's/[[:space:]]\+/ /g' | sed 's/^ //; s/ $//')"
              echo "Resolve release version: ${recommendation_error}" >&2
              exit 1
            fi
          fi

          echo "RELEASE_VERSION=$release_version" >> "$GITHUB_ENV"
          echo "version=$release_version" >> "$GITHUB_OUTPUT"

      - name: Prepare release files
        run: |
          set -euo pipefail
          go run ./cmd/vociferate \
            --root . \
            --version "$RELEASE_VERSION" \
            --date "$(date -u +%F)" \
            --changelog changelog.md

      - name: Run tests
        run: |
          set -euo pipefail
          go test ./...

      - name: Configure git author
        run: |
          set -euo pipefail
          git config user.name "gitea-actions[bot]"
          git config user.email "gitea-actions[bot]@users.noreply.local"

      - name: Commit release changes and push tag
        run: |
          set -euo pipefail

          normalized_version="${RELEASE_VERSION#v}"
          tag="v${normalized_version}"

          if git rev-parse "$tag" >/dev/null 2>&1; then
            echo "Tag ${tag} already exists" >&2
            exit 1
          fi

          case "$GITHUB_SERVER_URL" in
            https://*)
              authed_remote="https://oauth2:${RELEASE_TOKEN}@${GITHUB_SERVER_URL#https://}/${GITHUB_REPOSITORY}.git"
              ;;
            http://*)
              authed_remote="http://oauth2:${RELEASE_TOKEN}@${GITHUB_SERVER_URL#http://}/${GITHUB_REPOSITORY}.git"
              ;;
            *)
              echo "Unsupported GITHUB_SERVER_URL: ${GITHUB_SERVER_URL}" >&2
              exit 1
              ;;
          esac

          git remote set-url origin "$authed_remote"
          git add changelog.md release-version
          git commit -m "release: prepare ${tag}"
          git tag "$tag"
          git push origin HEAD
          git push origin "$tag"

      - name: Summarize prepared release
        run: |
          set -euo pipefail

          normalized_version="${RELEASE_VERSION#v}"
          tag="v${normalized_version}"

          {
            echo "## Release Prepared"
            echo
            echo "- Updated files were committed to main."
            echo "- Tag pushed: ${tag}"
            echo "- The tag-triggered Do Release workflow will create or update the release and publish binaries."
          } >> "$GITHUB_STEP_SUMMARY"