name: Label PRs from core team

on:
  pull_request_target:
    types: [opened, reopened, synchronize, ready_for_review, edited]

permissions:
  contents: read
  issues: write

jobs:
  label-core-team:
    if: ${{ !github.event.pull_request.draft }}
    runs-on: ubuntu-latest
    steps:
      - name: Check out base repository
        uses: actions/checkout@v4
        with:
          repository: ${{ github.repository }}
          ref: ${{ github.event.pull_request.base.ref }}

      - name: Determine if PR author is a core team member
        id: check_core
        shell: bash
        run: |
          AUTHOR="${{ github.event.pull_request.user.login }}"
          LIST_FILE=".github/core-team.txt"

          if [ ! -f "$LIST_FILE" ]; then
            echo "core=false" >> "$GITHUB_OUTPUT"
            exit 0
          fi

          # Normalize author to lowercase and strip leading '@'
          AUTHOR_NORM="$(echo "$AUTHOR" | tr '[:upper:]' '[:lower:]' | sed 's/^@//')"

          # Compare against normalized list values (ignore comments/blank lines)
          if awk -v author="$AUTHOR_NORM" '
            BEGIN { found=0 }
            {
              line=$0
              sub(/^[ \t]+|[ \t]+$/, "", line)
              if (line ~ /^#/ || line == "") next
              sub(/^@/, "", line)
              line=tolower(line)
              if (line == author) { found=1; exit }
            }
            END { exit(found ? 0 : 1) }
          ' "$LIST_FILE"; then
            echo "core=true" >> "$GITHUB_OUTPUT"
          else
            echo "core=false" >> "$GITHUB_OUTPUT"
          fi

      - name: Add core-team label
        if: steps.check_core.outputs.core == 'true'
        uses: actions/github-script@v7
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            const label = 'core-team';
            const { owner, repo } = context.repo;
            const prNumber = context.payload.pull_request.number;
            try {
              await github.rest.issues.addLabels({
                owner,
                repo,
                issue_number: prNumber,
                labels: [label],
              });
              core.info(`Label '${label}' added to PR #${prNumber}`);
            } catch (error) {
              core.warning(`Failed to add label: ${error.message}`);
            }


