/**
 * @license
 * Copyright 2026 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */

import { readdirSync, writeFileSync } from 'node:fs';
import { join } from 'node:path';
import { execSync } from 'node:child_process';

const SCRIPTS_DIR = join(
  process.cwd(),
  'tools',
  'gemini-cli-bot',
  'metrics',
  'scripts',
);
const OUTPUT_FILE = join(process.cwd(), 'metrics-before.csv');

function processOutputLine(line: string, results: string[]) {
  const trimmedLine = line.trim();
  if (!trimmedLine) return;

  try {
    const parsed = JSON.parse(trimmedLine);
    if (
      parsed &&
      typeof parsed === 'object' &&
      'metric' in parsed &&
      'value' in parsed
    ) {
      results.push(`${parsed.metric},${parsed.value}`);
    } else {
      results.push(trimmedLine);
    }
  } catch {
    results.push(trimmedLine);
  }
}

async function run() {
  const scripts = readdirSync(SCRIPTS_DIR).filter(
    (file) => file.endsWith('.ts') || file.endsWith('.js'),
  );

  const results: string[] = ['metric,value'];

  for (const script of scripts) {
    console.log(`Running metric script: ${script}`);
    try {
      const scriptPath = join(SCRIPTS_DIR, script);
      const output = execSync(`npx tsx ${JSON.stringify(scriptPath)}`, {
        encoding: 'utf-8',
      });

      const lines = output.trim().split('\n');
      for (const line of lines) {
        processOutputLine(line, results);
      }
    } catch (error) {
      console.error(`Error running ${script}:`, error);
    }
  }

  writeFileSync(OUTPUT_FILE, results.join('\n'));
  console.log(`Saved metrics to ${OUTPUT_FILE}`);
}

run().catch(console.error);