action.yml

name: "React Doctor"
description: "Scan React codebases for security, performance, and correctness issues"
branding:
  icon: "activity"
  color: "blue"

inputs:
  directory:
    description: "Project directory to scan"
    default: "."
  verbose:
    description: "Show file details per rule"
    default: "true"
  project:
    description: "Workspace project(s) to scan (comma-separated)"
    required: false
  diff:
    description: "Base branch for diff mode (e.g. main). Only files changed vs this branch are scanned."
    required: false
  github-token:
    description: "GitHub token for posting PR comments. When set on pull_request events, findings are posted as a PR comment."
    required: false
  fail-on:
    description: "Exit with error code on diagnostics: error, warning, none"
    default: "error"
  offline:
    description: "Skip sending diagnostics to the react.doctor API and calculate score locally"
    default: "false"
  node-version:
    description: "Node.js version to use"
    default: "22"

outputs:
  score:
    description: "Health score (0-100)"
    value: ${{ steps.score.outputs.score }}

runs:
  using: "composite"
  steps:
    - uses: actions/setup-node@v4
      with:
        node-version: ${{ inputs.node-version }}

    - if: ${{ inputs.diff != '' && github.event_name == 'pull_request' }}
      shell: bash
      run: |
        case "$DIFF_BASE" in -* ) echo "::error::diff input cannot start with -"; exit 1 ;; esac
        case "$HEAD_REF" in -* ) echo "::error::head_ref cannot start with -"; exit 1 ;; esac
        git fetch origin "$DIFF_BASE" && git branch -f "$DIFF_BASE" FETCH_HEAD 2>/dev/null || true
        git checkout "$HEAD_REF" 2>/dev/null || true
      env:
        GITHUB_TOKEN: ${{ inputs.github-token }}
        DIFF_BASE: ${{ inputs.diff }}
        HEAD_REF: ${{ github.head_ref }}

    - shell: bash
      env:
        NO_COLOR: "1"
        INPUT_DIRECTORY: ${{ inputs.directory }}
        INPUT_VERBOSE: ${{ inputs.verbose }}
        INPUT_PROJECT: ${{ inputs.project }}
        INPUT_DIFF: ${{ inputs.diff }}
        INPUT_GITHUB_TOKEN: ${{ inputs.github-token }}
        INPUT_FAIL_ON: ${{ inputs.fail-on }}
        INPUT_OFFLINE: ${{ inputs.offline }}
        RUNNER_TEMP: ${{ runner.temp }}
        GITHUB_RUN_ID: ${{ github.run_id }}
      run: |
        FLAGS=("--fail-on" "$INPUT_FAIL_ON")
        if [ "$INPUT_VERBOSE" = "true" ]; then FLAGS+=("--verbose"); fi
        if [ -n "$INPUT_PROJECT" ]; then FLAGS+=("--project" "$INPUT_PROJECT"); fi
        if [ -n "$INPUT_DIFF" ]; then FLAGS+=("--diff" "$INPUT_DIFF"); fi
        if [ "$INPUT_OFFLINE" = "true" ]; then FLAGS+=("--offline"); fi

        OUTPUT_FILE="${RUNNER_TEMP:-/tmp}/react-doctor-output-${GITHUB_RUN_ID:-$$}.txt"
        echo "REACT_DOCTOR_OUTPUT_FILE=$OUTPUT_FILE" >> "$GITHUB_ENV"

        if [ -n "$INPUT_GITHUB_TOKEN" ]; then
          npx -y react-doctor@latest "$INPUT_DIRECTORY" "${FLAGS[@]}" | tee "$OUTPUT_FILE"
        else
          npx -y react-doctor@latest "$INPUT_DIRECTORY" "${FLAGS[@]}"
        fi

    - id: score
      if: always()
      shell: bash
      env:
        INPUT_DIRECTORY: ${{ inputs.directory }}
        INPUT_OFFLINE: ${{ inputs.offline }}
      run: |
        # HACK: --score is an output-collection step, not a gate. Force
        # --fail-on none so older react-doctor releases (which exit
        # non-zero when the score lands in the "Needs work" band, even
        # though the value itself is the only meaningful signal here)
        # don't fail the composite action under `set -e -o pipefail`.
        SCORE_ARGS=("$INPUT_DIRECTORY" "--score" "--fail-on" "none")
        if [ "$INPUT_OFFLINE" = "true" ]; then SCORE_ARGS+=("--offline"); fi
        SCORE=$(npx -y react-doctor@latest "${SCORE_ARGS[@]}" 2>/dev/null | tail -1 | tr -d '[:space:]') || true
        if [[ -n "$SCORE" && "$SCORE" =~ ^[0-9]+$ ]]; then
          echo "score=$SCORE" >> "$GITHUB_OUTPUT"
        fi

    - if: ${{ inputs.github-token != '' && github.event_name == 'pull_request' }}
      uses: actions/github-script@v7
      env:
        REACT_DOCTOR_OUTPUT_FILE: ${{ env.REACT_DOCTOR_OUTPUT_FILE }}
        REACT_DOCTOR_SCORE: ${{ steps.score.outputs.score }}
      with:
        github-token: ${{ inputs.github-token }}
        script: |
          const fs = require("fs");
          const path = process.env.REACT_DOCTOR_OUTPUT_FILE;
          if (!path || !fs.existsSync(path)) return;
          const output = fs.readFileSync(path, "utf8").trim();
          if (!output) return;

          const score = process.env.REACT_DOCTOR_SCORE;
          const scoreLine =
            score && /^[0-9]+$/.test(score)
              ? `**Score:** \`${score}\` / 100\n\n`
              : "";

          const marker = "<!-- react-doctor -->";
          const fence = "````";
          const body = `${marker}\n## React Doctor\n\n${scoreLine}${fence}\n${output}\n${fence}`;

          const { data: comments } = await github.rest.issues.listComments({
            ...context.repo,
            issue_number: context.issue.number,
          });
          const prev = comments.find((c) => c.body?.startsWith(marker));
          if (prev) {
            await github.rest.issues.updateComment({
              ...context.repo,
              comment_id: prev.id,
              body,
            });
          } else {
            await github.rest.issues.createComment({
              ...context.repo,
              issue_number: context.issue.number,
              body,
            });
          }