/**
 * @license
 * Copyright 2026 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import { execSync } from 'node:child_process';

try {
  const query = `
  query($owner: String!, $repo: String!) {
    repository(owner: $owner, name: $repo) {
      pullRequests(last: 100, states: MERGED) {
        nodes {
          authorAssociation
          comments { totalCount }
          reviews { totalCount }
        }
      }
      issues(last: 100, states: CLOSED) {
        nodes {
          authorAssociation
          comments { totalCount }
        }
      }
    }
  }
  `;
  const output = execSync(`gh api graphql -F owner=google-gemini -F repo=gemini-cli -f query='${query}'`, { encoding: 'utf-8' });
  const data = JSON.parse(output).data.repository;
  
  const prs = data.pullRequests.nodes;
  const issues = data.issues.nodes;
  
  const allItems = [...prs.map(p => ({
    association: p.authorAssociation,
    touches: p.comments.totalCount + (p.reviews ? p.reviews.totalCount : 0)
  })), ...issues.map(i => ({
    association: i.authorAssociation,
    touches: i.comments.totalCount
  }))];
  
  const isMaintainer = (assoc) => ['MEMBER', 'OWNER', 'COLLABORATOR'].includes(assoc);
  
  const calculateAvg = (items) => items.length ? items.reduce((a, b) => a + b.touches, 0) / items.length : 0;
  
  const overall = calculateAvg(allItems);
  const maintainers = calculateAvg(allItems.filter(i => isMaintainer(i.association)));
  const community = calculateAvg(allItems.filter(i => !isMaintainer(i.association)));
  
  const timestamp = new Date().toISOString();
  
  process.stdout.write(JSON.stringify({ metric: 'user_touches_overall', value: Math.round(overall * 100) / 100, timestamp }) + '\n');
  process.stdout.write(JSON.stringify({ metric: 'user_touches_maintainers', value: Math.round(maintainers * 100) / 100, timestamp }) + '\n');
  process.stdout.write(JSON.stringify({ metric: 'user_touches_community', value: Math.round(community * 100) / 100, timestamp }) + '\n');
} catch (err) {
  process.stderr.write(err instanceof Error ? err.message : String(err));
  process.exit(1);
}