repository-add-issue-to-epic.yml

---
name: Add issue to epic

on: # yamllint disable-line rule:truthy
  issues:
    types:
      - labeled

concurrency:
  group: add-issue-to-epic
  cancel-in-progress: false

permissions: read-all

jobs:
  add-issue-to-epic:
    runs-on: ubuntu-latest
    permissions:
      issues: write
    steps:
      - name: Add issue to Epic
        id: add_issue_to_epic
        uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7.0.1
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            console.log("Starting script...");
            const payload = context.payload;
            const issueNumber = payload.issue.number;
            const issueTitle = payload.issue.title;
            const labelName = payload.label.name;

            console.log(`Issue Number: ${issueNumber}`);
            console.log(`Issue Title: ${issueTitle}`);
            console.log(`Label Name: ${labelName}`);

            // Check if the label applied is an Epic label
            if (!labelName.includes('(Epic #')) {
              console.log('The applied label is not an Epic label. Exiting...');
              return;
            }

            // Extract the Epic's issue number from the label name
            const epicNumber = labelName.match(/\(Epic #(\d+)\)/)[1];
            console.log(`Epic Number Extracted: ${epicNumber}`);

            if (!epicNumber) {
              console.log('Could not determine the Epic issue number. Exiting...');
              return;
            }

            // Fetch the description of the Epic
            const epic = await github.rest.issues.get({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: epicNumber
            });
            const epicBody = epic.data.body;
            console.log("Fetched Epic Body:");
            console.log(epicBody);

            // Amend the Epic description with a checkbox and link to the new issue
            const newItemLink = `- [ ] #${issueNumber}`;
            console.log(`New Item Link: ${newItemLink}`);
            const updatedDescription = `${epicBody}\n${newItemLink}`;
            console.log("Updated Description:");
            console.log(updatedDescription);

            // Update the Epic description
            await github.rest.issues.update({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: epicNumber,
              body: updatedDescription
            });
            console.log("Epic description updated successfully.");