Contributors Report

Generate a contributors report for the specified organization or repositories.

Step 1: Validate Configuration

Check the workflow inputs. Either organization or repositories must be provided.

• If both are empty and this is a scheduled run, default to analyzing all public repositories in the organization that owns the current repository. Determine the org from the GITHUB_REPOSITORY environment variable (the part before the /).
• If both are empty and this is a manual dispatch, fail with a clear error message: "You must provide either an organization or a comma-separated list of repositories."
• If both are provided, prefer repositories and ignore organization.

Step 2: Determine Date Range

• If start_date and end_date are provided, use them.
• Otherwise, default to the previous calendar month. For example, if today is 2025-03-15, the range is 2025-02-01 to 2025-02-28.
• Use bash to compute the dates if needed. Store them as START_DATE and END_DATE.

Step 3: Enumerate Repositories

• If repositories input was provided, split the comma-separated string into a list. Each entry should be in owner/repo format.
• If organization input was provided (or defaulted from Step 1), list all public, non-archived, non-fork repositories in the organization using the GitHub API. Collect their owner/repo identifiers.

Step 4: Collect Contributors from Commit History

For each repository in scope:

1. Use the GitHub API to list commits between START_DATE and END_DATE (use the since and until parameters on the commits endpoint).
2. For each commit, extract the author login (from author.login on the commit object).
3. Exclude bot accounts: skip any contributor whose username contains [bot] or whose type field is "Bot".
4. Track per-contributor:
   • Total number of commits across all repos.
   • The set of repos they contributed to.

Use bash to aggregate and deduplicate the contributor data across all repositories.

Step 5: Determine New vs Returning Contributors

For each contributor found in Step 4, check whether they have any commits before START_DATE in any of the in-scope repositories.

• If a contributor has no commits before START_DATE, mark them as a New Contributor.
• Otherwise, mark them as a Returning Contributor.

Step 6: Collect Sponsor Information (Optional)

If the sponsor_info input is true:

1. For each contributor, check whether they have a GitHub Sponsors profile by querying the user's profile via the GitHub API.
2. If the user has sponsorship enabled, record their sponsor URL as https://github.com/sponsors/<username>.
3. If not, leave the sponsor field empty.

Step 7: Generate Markdown Report

Build a markdown report with the following structure:

Summary Table

Metric	Value
Total Contributors	count
Total Contributions (Commits)	count
New Contributors	count
Returning Contributors	count
% New Contributors	percentage

Contributors Detail Table

Sort contributors by commit count descending.

#	Username	Contribution Count	New Contributor	Sponsor URL	Commits
1	@username	42	Yes	Sponsor	View

• The Username column should link to the contributor's GitHub profile.
• The Sponsor URL column should show "N/A" if sponsor_info is false or the user has no Sponsors page.
• The Commits column should link to a filtered commits view.

Step 8: Create Issue with Report

Create an issue in the current repository with:

• Title: [Contributors Report] <ORG_OR_REPO_SCOPE> — START_DATE to END_DATE
• Body: The full markdown report from Step 7.
• Labels: Add the label contributors-report if it exists; do not fail if it does not.