covrs 0.2.3

name: "covrs diff coverage"
description: "Post a diff-coverage comment on a GitHub pull request using covrs"
branding:
  icon: "check-circle"
  color: "green"

inputs:
  token:
    description: "GitHub token for API access"
    default: ${{ github.token }}
  db:
    description: "Path to the covrs SQLite database"
    default: ".covrs.db"
  root:
    description: "Project root for making coverage paths relative (default: current working directory)"
    required: false
  path-prefix:
    description: "Path prefix to prepend to diff file paths for matching against coverage data"
    required: false
  coverage-files:
    description: "Coverage file(s) to ingest before computing diff coverage (space or newline separated)"
    required: true
  version:
    description: "covrs version to install (e.g. '0.1.0'). Omit to install the latest."
    required: false

runs:
  using: "composite"
  steps:
    - name: Install covrs
      shell: bash
      run: |
        set -euo pipefail

        # Resolve version
        VERSION="${{ inputs.version }}"
        if [ -z "$VERSION" ]; then
          VERSION=$(
            curl -fsSL \
              -H "Accept: application/vnd.github+json" \
              -H "X-GitHub-Api-Version: 2022-11-28" \
              "https://api.github.com/repos/scttnlsn/covrs/releases/latest" \
            | grep '"tag_name"' | sed -E 's/.*"v([^"]+)".*/\1/'
          )
          if [ -z "$VERSION" ]; then
            echo "::error::Could not determine latest covrs version"
            exit 1
          fi
        fi

        # Resolve platform
        OS="$(uname -s)"
        ARCH="$(uname -m)"
        case "${OS}-${ARCH}" in
          Linux-x86_64)   TARGET="x86_64-unknown-linux-gnu"   ;;
          Linux-aarch64)  TARGET="aarch64-unknown-linux-gnu"  ;;
          Darwin-x86_64)  TARGET="x86_64-apple-darwin"        ;;
          Darwin-arm64)   TARGET="aarch64-apple-darwin"       ;;
          *)
            echo "::error::Unsupported platform: ${OS}-${ARCH}"
            exit 1
            ;;
        esac

        # Download prebuilt binary
        URL="https://github.com/scttnlsn/covrs/releases/download/v${VERSION}/covrs-${TARGET}.tar.gz"
        INSTALL_DIR="${RUNNER_TEMP:-/tmp}/covrs-bin"
        mkdir -p "$INSTALL_DIR"

        echo "Downloading covrs v${VERSION} for ${TARGET}"
        curl -fsSL "$URL" | tar -xz -C "$INSTALL_DIR"
        chmod +x "$INSTALL_DIR/covrs"
        echo "$INSTALL_DIR" >> "$GITHUB_PATH"

    - name: Ingest coverage files
      shell: bash
      run: |
        set -euo pipefail

        INGEST_ARGS=()
        if [ -n "${{ inputs.root }}" ]; then
          INGEST_ARGS+=(--root "${{ inputs.root }}")
        fi

        for file in ${{ inputs.coverage-files }}; do
          echo "Ingesting: $file"
          covrs --db "${{ inputs.db }}" ingest "$file" "${INGEST_ARGS[@]}"
        done

    - name: Post coverage comment
      shell: bash
      env:
        GITHUB_TOKEN: ${{ inputs.token }}
      run: |
        set -euo pipefail

        ARGS=(--db "${{ inputs.db }}")
        ARGS+=(diff-coverage --style markdown --comment)

        if [ -n "${{ inputs.path-prefix }}" ]; then
          ARGS+=(--path-prefix "${{ inputs.path-prefix }}")
        fi

        echo "Running: covrs ${ARGS[*]}"
        covrs "${ARGS[@]}"