assign-issue.yml

name: Issue Assignment Manager

on:
  issue_comment:
    types:
      - created

jobs:
  assign-issue:
    runs-on: ubuntu-latest

    steps:
      - name: Set up Node.js
        uses: actions/setup-node@v3
        with:
          node-version: '16'

      - name: Create assignment script
        run: |
          cat > assign.js << 'EOL'
          const github = require('@actions/github');
          const core = require('@actions/core');

          async function handleAssignCommand() {
            try {
              const token = process.env.GITHUB_TOKEN;
              const octokit = github.getOctokit(token);
              const context = github.context;
              const { issue, comment } = context.payload;
              const { owner, repo } = context.repo;

              // Check if the comment contains /assign
              const commentBody = comment.body.trim();
              if (commentBody !== '/assign') {
                console.log('Comment does not contain /assign. Skipping.');
                return;
              }

              const commenter = comment.user.login;

              // Fetch all open issues assigned to the commenter
              const { data: issues } = await octokit.rest.issues.listForRepo({
                owner,
                repo,
                state: 'open',
                assignee: commenter,
              });

              if (issues.length > 0) {
                console.log(`${commenter} is already assigned to an issue.`);
                await octokit.rest.issues.createComment({
                  owner,
                  repo,
                  issue_number: issue.number,
                  body: `@${commenter}, you are already assigned to an issue. You can only work on one issue at a time.`,
                });
                return;
              }

              // Check if the issue is already assigned to someone
              if (issue.assignees && issue.assignees.length > 0) {
                console.log(`Issue #${issue.number} is already assigned.`);
                await octokit.rest.issues.createComment({
                  owner,
                  repo,
                  issue_number: issue.number,
                  body: 'This issue is already assigned to someone else.',
                });
                return;
              }

              // Assign the issue to the commenter
              await octokit.rest.issues.addAssignees({
                owner,
                repo,
                issue_number: issue.number,
                assignees: [commenter],
              });

              console.log(`Assigned issue #${issue.number} to @${commenter}.`);
              await octokit.rest.issues.createComment({
                owner,
                repo,
                issue_number: issue.number,
                body: `@${commenter}, the issue has been assigned to you. Happy coding!`,
              });
            } catch (error) {
              console.error(error);
              core.setFailed(error.message);
            }
          }

          handleAssignCommand();
          EOL

      - name: Install dependencies
        run: npm install @actions/github @actions/core

      - name: Handle /assign command
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: node assign.js