#!/usr/bin/env node
// Prints the project's SonarQube measures into the job log.
//
// This exists because the numbers are otherwise unreachable. The server is
// SonarQube 9.9 Community: it has no Bearer auth, so the official MCP cannot
// connect, and the host URL is a CI secret, so there is no way to query it from
// a developer's machine either. The measures lived only on a dashboard, which
// made "reduce the debt" an instruction nobody could act on without a browser
// open beside them. See #261.
//
// The scanner masks SONAR_HOST_URL and SONAR_TOKEN in the log. Measures are not
// secret, so they print fine — only the URL they came from is redacted.
//
// Authentication is HTTP Basic with the token as the username and an empty
// password. That is the documented scheme for 9.9; the `Authorization: Bearer`
// form was added later and returns 401 here.
//
// Runs with `if: always()` and deliberately WITHOUT `continue-on-error`. A
// cleanup report that can break a build is worse than no report, so instead of
// being guarded this script simply never fails: every path exits 0 and problems
// are described rather than thrown. Guarding it would also oblige it to be named
// in the workflow's final gate — workflowGate.test.ts asserts that pairing — and
// that gate exists to fail the job, which is the opposite of what is wanted for
// a report. Same shape as the summarize-jest.js steps beside it.

const https = require('https');
const http = require('http');
const fs = require('fs');
const path = require('path');

const HOST = process.env.SONAR_HOST_URL;
const TOKEN = process.env.SONAR_TOKEN;
const PROJECT = process.argv[2] || 'redefined-designs';

// Ordered so the four things the cleanup issue asks about come first, rather
// than alphabetically. Each row is [metric key, label, formatter].
const METRICS = [
  ['security_hotspots', 'Security hotspots', (v) => v],
  ['vulnerabilities', 'Vulnerabilities', (v) => v],
  ['bugs', 'Bugs', (v) => v],
  ['duplicated_lines_density', 'Duplicated lines', (v) => `${v}%`],
  ['duplicated_blocks', 'Duplicated blocks', (v) => v],
  ['sqale_index', 'Technical debt', formatDebt],
  ['code_smells', 'Code smells', (v) => v],
  ['coverage', 'Coverage', (v) => `${v}%`],
  ['line_coverage', 'Line coverage', (v) => `${v}%`],
  ['branch_coverage', 'Branch coverage', (v) => `${v}%`],
  ['uncovered_lines', 'Uncovered lines', (v) => v],
  ['ncloc', 'Lines of code', (v) => v],
  ['new_coverage', 'Coverage on new code', (v) => `${v}%`],
  ['new_duplicated_lines_density', 'Duplication on new code', (v) => `${v}%`],
  ['new_code_smells', 'Code smells on new code', (v) => v]
];

/** sqale_index is minutes. Days here are Sonar's 8-hour working days. */
function formatDebt(minutes) {
  const total = Number(minutes);
  if (!Number.isFinite(total)) return String(minutes);
  const days = Math.floor(total / (8 * 60));
  const hours = Math.floor((total % (8 * 60)) / 60);
  const mins = total % 60;
  return `${total} min (${days}d ${hours}h ${mins}m)`;
}

function get(url) {
  return new Promise((resolve) => {
    const client = url.startsWith('https:') ? https : http;
    const request = client.get(
      url,
      // The empty password is deliberate: 9.9 expects `token:` rather than a
      // password, and omitting the colon sends the token as a username with no
      // password field at all, which it rejects.
      { auth: `${TOKEN}:`, timeout: 30000 },
      (res) => {
        let body = '';
        res.on('data', (chunk) => (body += chunk));
        res.on('end', () => resolve({ status: res.statusCode, body }));
      }
    );
    request.on('timeout', () => {
      request.destroy();
      resolve({ status: 0, body: 'timed out after 30s' });
    });
    request.on('error', (err) => resolve({ status: 0, body: err.message }));
  });
}

function parse(body) {
  try {
    return JSON.parse(body);
  } catch {
    return null;
  }
}

/**
 * Waits for the server to finish processing this run's analysis.
 *
 * The workflow does not set `sonar.qualitygate.wait`, so the scan step returns
 * as soon as the report is uploaded and the server computes measures in the
 * background. Querying immediately therefore returns the *previous* analysis,
 * which would be indistinguishable from the current one and quietly wrong — the
 * worst kind of number to publish into a cleanup report.
 *
 * The scanner writes the task id to .scannerwork/report-task.txt. Polling it
 * costs a few seconds and makes the difference between "these are this commit's
 * numbers" and "these are probably this commit's numbers".
 */
async function waitForAnalysis(base) {
  const reportPath = path.join(process.cwd(), '.scannerwork', 'report-task.txt');
  if (!fs.existsSync(reportPath)) {
    return 'no report-task.txt — reporting the last completed analysis, which may predate this commit';
  }

  const taskId = /^ceTaskId=(.+)$/m.exec(fs.readFileSync(reportPath, 'utf8'))?.[1]?.trim();
  if (!taskId) {
    return 'no ceTaskId in report-task.txt — reporting the last completed analysis';
  }

  // Twenty attempts at three seconds. A minute is far longer than this project
  // takes to process and short enough not to stretch the job noticeably.
  for (let attempt = 0; attempt < 20; attempt++) {
    const res = await get(`${base}/api/ce/task?id=${encodeURIComponent(taskId)}`);
    const status = parse(res.body)?.task?.status;
    if (status === 'SUCCESS') return null;
    if (status === 'FAILED' || status === 'CANCELED') {
      return `analysis ${status} on the server — reporting the last completed analysis instead`;
    }
    await new Promise((resolve) => setTimeout(resolve, 3000));
  }
  return 'analysis still processing after 60s — reporting the last completed analysis';
}

async function main() {
  if (!HOST || !TOKEN) {
    // Not an error. A fork or a run without the secrets configured reaches this
    // legitimately, and saying so is more useful than a stack trace.
    console.log('SonarQube measures: SONAR_HOST_URL or SONAR_TOKEN not set, skipping.');
    return;
  }

  const base = HOST.replace(/\/+$/, '');

  const staleness = await waitForAnalysis(base);

  const keys = METRICS.map(([key]) => key).join(',');
  const measuresUrl = `${base}/api/measures/component?component=${encodeURIComponent(PROJECT)}&metricKeys=${keys}`;

  const res = await get(measuresUrl);
  if (res.status !== 200) {
    console.log(`SonarQube measures: request failed (status ${res.status}). ${res.body.slice(0, 300)}`);
    return;
  }

  const json = parse(res.body);
  const measures = json?.component?.measures;
  if (!Array.isArray(measures)) {
    console.log('SonarQube measures: unexpected response shape.');
    console.log(res.body.slice(0, 300));
    return;
  }

  // Keyed by metric so the display order above is what prints, rather than
  // whatever order the API happened to return.
  const byKey = new Map(measures.map((m) => [m.metric, m]));

  const lines = ['', '=== SonarQube measures ===', ''];
  // Said plainly rather than omitted. A reader acting on these numbers needs to
  // know whether they describe this commit.
  if (staleness) lines.push(`NOTE: ${staleness}`, '');
  for (const [key, label, format] of METRICS) {
    const measure = byKey.get(key);
    // A metric can be legitimately absent — new-code metrics do not exist until
    // a second analysis, and branch_coverage is missing when nothing branches.
    if (!measure) {
      lines.push(`${label.padEnd(26)} —`);
      continue;
    }
    const value = measure.period?.value ?? measure.value;
    lines.push(`${label.padEnd(26)} ${format(value)}`);
  }

  const gate = await get(
    `${base}/api/qualitygates/project_status?projectKey=${encodeURIComponent(PROJECT)}`
  );
  const gateStatus = parse(gate.body)?.projectStatus?.status;
  lines.push('', `Quality gate                ${gateStatus ?? 'unknown'}`, '');

  console.log(lines.join('\n'));
}

main().catch((err) => {
  // Reported rather than thrown, for the reason in the header: this step must
  // not be able to fail the job.
  console.log(`SonarQube measures: ${err instanceof Error ? err.message : String(err)}`);
});