action.yml

name: "Bundle Analysis"
description: "Analyze bundle size differences using rsdoctor and comment on PRs"
author: "GitHub Actions"

inputs:
  base_dir:
    description: "Directory containing base branch rsdoctor data"
    default: ".bundle-base"
    required: false
  current_dir:
    description: "Directory containing current branch rsdoctor data"
    default: "."
    required: false
  github_token:
    description: "GitHub token for posting comments"
    required: true
  header:
    description: "Header to identify the comment (for sticky comments)"
    default: "bundle-analysis"
    required: false
  pr_number:
    description: "Pull request number (auto-detected if not provided)"
    required: false
  skip_comment:
    description: "Skip posting comment if true"
    default: "false"
    required: false
  packages_dir:
    description: "Directory containing packages to analyze"
    default: "packages"
    required: false
  fail_on_increase:
    description: "Fail the action if bundle size increases significantly"
    default: "false"
    required: false
  threshold:
    description: "Percentage threshold for significant bundle size increase"
    default: "10"
    required: false

outputs:
  report_path:
    description: "Path to the generated bundle diff report"
  has_changes:
    description: "Whether bundle changes were detected"
  total_diff_percent:
    description: "Total bundle size change percentage"

runs:
  using: "composite"
  steps:
    - name: Install dependencies
      shell: bash
      working-directory: ${{ github.action_path }}
      run: |
        if [ ! -d "node_modules" ]; then
          # Use pnpm from PATH if available (set by workflow), otherwise install it
          if ! command -v pnpm &> /dev/null; then
            if [ -n "$PNPM_HOME" ]; then
              export PATH="$PNPM_HOME:$PATH"
            else
              core_url="https://get.pnpm.io/install.sh"
              curl -fsSL "$core_url" | sh -
              export PNPM_HOME="$HOME/.local/share/pnpm"
              export PATH="$PNPM_HOME:$PATH"
            fi
          fi
          # Try frozen lockfile first, fall back to regular install if lockfile is outdated
          pnpm install --frozen-lockfile || pnpm install --no-frozen-lockfile
        fi
    - name: Run bundle analysis
      shell: bash
      working-directory: ${{ github.action_path }}
      run: |
        # Ensure pnpm is in PATH
        if [ -n "$PNPM_HOME" ] && [ -z "$(command -v pnpm)" ]; then
          export PATH="$PNPM_HOME:$PATH"
        fi
        pnpm exec tsx "$GITHUB_ACTION_PATH/src/main.ts"
      env:
        INPUT_BASE_DIR: ${{ inputs.base_dir }}
        INPUT_CURRENT_DIR: ${{ inputs.current_dir }}
        INPUT_GITHUB_TOKEN: ${{ inputs.github_token }}
        INPUT_HEADER: ${{ inputs.header }}
        INPUT_PR_NUMBER: ${{ inputs.pr_number }}
        INPUT_SKIP_COMMENT: ${{ inputs.skip_comment }}
        INPUT_FAIL_ON_INCREASE: ${{ inputs.fail_on_increase }}
        INPUT_PACKAGES_DIR: ${{ inputs.packages_dir }}
        INPUT_THRESHOLD: ${{ inputs.threshold }}