name: OpenClaw Gate

on:
  issues:
    types: [opened]
  pull_request_target:
    types: [opened]

jobs:
  check-contributor:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      issues: write
      pull-requests: write
    steps:
      - name: Check contributor
        uses: actions/github-script@v7
        with:
          script: |
            const isPR = !!context.payload.pull_request;
            const author = isPR
              ? context.payload.pull_request.user.login
              : context.payload.issue.user.login;
            const number = isPR
              ? context.payload.pull_request.number
              : context.payload.issue.number;
            const defaultBranch = context.payload.repository.default_branch;

            if (author.endsWith('[bot]') || author === 'dependabot[bot]') {
              console.log(`Skipping bot: ${author}`);
              return;
            }

            const APPROVED_FILE = '.github/APPROVED_CONTRIBUTORS';
            const VALID_CAPABILITIES = new Set(['issue', 'pr']);

            // --- Check APPROVED_CONTRIBUTORS ---
            async function getTextFile(path) {
              const { data } = await github.rest.repos.getContent({
                owner: context.repo.owner,
                repo: context.repo.repo,
                path,
                ref: defaultBranch,
              });
              if (!('content' in data) || typeof data.content !== 'string') {
                throw new Error(`Expected file content for ${path}`);
              }
              return Buffer.from(data.content, 'base64').toString('utf8');
            }

            try {
              const content = await getTextFile(APPROVED_FILE);
              const approved = new Map();
              for (const rawLine of content.split('\n')) {
                const line = rawLine.trim();
                if (!line || line.startsWith('#')) continue;

                const parts = line.split(/\s+/);
                if (parts.length !== 2) continue;

                const [username, capability] = parts;
                const normalizedCapability = capability.toLowerCase();
                if (!VALID_CAPABILITIES.has(normalizedCapability)) continue;

                approved.set(username.toLowerCase(), normalizedCapability);
              }

              if (approved.has(author.toLowerCase())) {
                console.log(`${author} is in APPROVED_CONTRIBUTORS, passing`);
                return;
              }
            } catch (err) {
              console.log(`Could not read APPROVED_CONTRIBUTORS: ${err.message}`);
            }

            // --- Also pass collaborators with write+ access ---
            try {
              const { data: perm } = await github.rest.repos.getCollaboratorPermissionLevel({
                owner: context.repo.owner,
                repo: context.repo.repo,
                username: author,
              });
              if (['admin', 'maintain', 'write'].includes(perm.permission)) {
                console.log(`${author} is a collaborator (${perm.permission}), passing`);
                return;
              }
            } catch {
              // not a collaborator
            }

            // --- Check if user opened issues/PRs on openclaw/openclaw ---
            async function hasOpenClawActivity(username) {
              try {
                const { data } = await github.rest.search.issuesAndPullRequests({
                  q: `repo:openclaw/openclaw author:${username}`,
                  per_page: 1,
                });
                if (data.total_count > 0) {
                  console.log(`${username} has opened ${data.total_count} issues/PRs on openclaw/openclaw`);
                  return true;
                }
              } catch (err) {
                console.log(`Search failed: ${err.message}`);
              }
              return false;
            }

            const hasActivity = await hasOpenClawActivity(author);
            if (!hasActivity) {
              console.log(`${author} has no openclaw/openclaw activity, passing`);
              return;
            }

            // --- Add openclaw label ---
            console.log(`${author} has openclaw/openclaw activity, adding label`);
            await github.rest.issues.addLabels({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: number,
              labels: ['possibly-openclaw-clanker'],
            });