action.yaml

name: "Generate Commit Badge"
description: "Generate a Shields.io badge for commit count in a specified repository."
inputs:
  repository:
    description: "The GitHub repository (user/project) to query commits from."
    required: true
  author:
    description: "The author whose commits should be counted."
    required: true
  text:
    description: "The label text for the badge."
    required: true
  outputPath:
    description: "Path and file name for the generated badge (e.g., 'badges/dart-commits.svg')."
    required: true
  token:
    description: "GitHub token to authenticate API requests."
    required: true
  logo:
    description: "The logo to include in the badge (optional)."
    required: false
    default: "github"
  labelColor:
    description: "The background color for the badge label."
    required: false
    default: "#0175C2" # Default to blue
  color:
    description: "The background color for the badge value."
    required: false
    default: "lightgray"

runs:
  using: "composite"
  steps:
    - name: Count Commits
      id: count-commits
      shell: bash
      env:
        TOKEN: ${{ inputs.token }}
      run: |
        REPO="${{ inputs.repository }}"
        AUTHOR="${{ inputs.author }}"
        API_URL="https://api.github.com/search/commits?q=author:${AUTHOR}+repo:${REPO}"
        PER_PAGE=100
        PAGE=1
        COMMIT_COUNT=0
        while true; do
          # Fetch commit count using GitHub's Search API (faster, with pagination)
          COMMITS_URL="${API_URL}&per_page=${PER_PAGE}&page=${PAGE}"
          echo "Fetching commits from: $COMMITS_URL"
          RESPONSE=$(curl -s -H "Authorization: Bearer $TOKEN" -H "Accept: application/vnd.github.cloak-preview" "${COMMITS_URL}")

          # Get the number of commits from the current page
          LENGTH=$(echo "$RESPONSE" | jq '.items | length')
          echo "Commits on page $PAGE: $LENGTH"

          # If no commits are returned, break out of the loop
          if [ "$LENGTH" -eq 0 ]; then
            break
          fi

          # Increment the total commit count
          COMMIT_COUNT=$((COMMIT_COUNT + LENGTH))

          # Move to the next page
          PAGE=$((PAGE + 1))
        done

        echo "commit_count=$COMMIT_COUNT" >> $GITHUB_ENV

    - name: Generate Badge
      shell: bash
      run: |
        COMMIT_COUNT=${{ env.commit_count }}
        TEXT="${{ inputs.text }}"
        LOGO="${{ inputs.logo }}"
        LABEL_COLOR="${{ inputs.labelColor }}"
        LABEL_COLOR="${LABEL_COLOR//#/%23}"
        COLOR="${{ inputs.color }}"
        
        # URL encode the TEXT by replacing spaces with %20
        ENCODED_TEXT=$(echo "$TEXT" | sed 's/ /%20/g')
        
        BADGE_URL="https://img.shields.io/static/v1?label=${ENCODED_TEXT}&message=${COMMIT_COUNT}&color=${COLOR}&labelColor=${LABEL_COLOR}&style=flat&logo=${LOGO}"
        echo "BADGE_URL: $BADGE_URL"
        curl -s "$BADGE_URL" -o badge.svg
    
        # Verify the badge.svg was downloaded
        if [ ! -f badge.svg ]; then
          echo "Error: badge.svg was not created."
          exit 3
        fi

    - name: Save Badge
      shell: bash
      run: |
        mkdir -p $(dirname "${{ inputs.outputPath }}")
        mv badge.svg "${{ inputs.outputPath }}" || { echo "Error: Failed to move badge.svg"; exit 3; }