name: auto-assign
on:
  issues:
    types:
      - labeled

jobs:
  assign_issue:
    # Only run on module label colors.
    if: ${{ github.event.label.color == '00611d' }}
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v2

      - name: Get assignee
        uses: actions/github-script@v6
        id: get-assignee
        with:
          github-token: ${{secrets.GITHUB_TOKEN}}
          script: |
            const fs = require('fs');

            // Read configuration file
            const config = JSON.parse(fs.readFileSync('.github/workflows/module-owners.json', 'utf8'));

            // Find matching label in config
            for (const [configLabel, users] of Object.entries(config)) {
              if (configLabel == "${{ github.event.label.name}}") {
                // Select Randomly
                const index = Math.floor(Math.random() * users.length)
                const assignee = users[index % users.length];
                return assignee
              }
            }
            // Returning empty string in case a valid assignee is not found.
            return ""
          result-encoding: string

      - name: Assign
        run: gh issue edit ${{ github.event.issue.number }} --add-label "triaged" --add-label "investigating" --add-assignee ${{ steps.get-assignee.outputs.result }}
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}