#!/usr/bin/env node

const fs = require('fs');
const path = require('path');
const { execSync } = require('child_process');

const projectRoot = path.resolve(__dirname, '../..');
const infoViewFile = path.join(projectRoot, 'src/views/InfoView.vue');
const serviceWorkerFile = path.join(projectRoot, 'public/service-worker.js');

console.log('Running pre-commit hook...');

// --- 1. Update Build Time in InfoView.vue ---
try {
  let infoViewContent = fs.readFileSync(infoViewFile, 'utf8');
  
  // Regex to find the line assigning to buildTime.value or ref("...")
  // It looks for ref("...") containing either __BUILD_TIME__ or a date-like string.
  // This regex captures the part inside ref("...").
  const buildTimeAssignmentRegex = /const buildTime = ref\s*\(\s*["']([^"']*)["']\s*\);/;
  const matchBuildTime = infoViewContent.match(buildTimeAssignmentRegex);

  const now = new Date();
  const newTimestamp = `${now.getFullYear()}-${String(now.getMonth() + 1).padStart(2, '0')}-${String(now.getDate()).padStart(2, '0')} ${String(now.getHours()).padStart(2, '0')}:${String(now.getMinutes()).padStart(2, '0')}:${String(now.getSeconds()).padStart(2, '0')}`;

  if (matchBuildTime && matchBuildTime[0]) { // If the line `const buildTime = ref(...)` is found
    // Replace the entire matched line with the new timestamp
    const oldLine = matchBuildTime[0];
    const newLine = `const buildTime = ref("${newTimestamp}");`;
    
    infoViewContent = infoViewContent.replace(oldLine, newLine);

    fs.writeFileSync(infoViewFile, infoViewContent, 'utf8');
    console.log(`Updated build time in ${path.basename(infoViewFile)} to: ${newTimestamp}`);
    execSync(`git add "${infoViewFile}"`, { stdio: 'inherit' });
  } else {
    console.warn(`Could not find the buildTime ref assignment line in ${path.basename(infoViewFile)}. Skipping build time update.`);
    // You might want to make this an error if the line should always exist after the first run.
    // For now, just a warning.
  }
} catch (error) {
  console.error(`Error updating build time in ${infoViewFile}:`, error);
  process.exit(1);
}

// --- 2. Increment Service Worker Cache Version ---
try {
  let swContent = fs.readFileSync(serviceWorkerFile, 'utf8');
  const cacheVersionRegex = /const CACHE_VERSION = ['"](nexus-timer-cache-v)(\d+)['"];/;
  const matchCache = swContent.match(cacheVersionRegex);

  if (matchCache && matchCache[1] && matchCache[2]) {
    const prefix = matchCache[1];
    const currentVersion = parseInt(matchCache[2], 10);
    const newVersion = currentVersion + 1;
    const newCacheVersionLine = `const CACHE_VERSION = '${prefix}${newVersion}';`;
    
    swContent = swContent.replace(cacheVersionRegex, newCacheVersionLine);
    fs.writeFileSync(serviceWorkerFile, swContent, 'utf8');
    console.log(`Updated Service Worker cache version in ${path.basename(serviceWorkerFile)} to: v${newVersion}`);
    execSync(`git add "${serviceWorkerFile}"`, { stdio: 'inherit' });
  } else {
    console.warn(`Could not find or parse CACHE_VERSION in ${path.basename(serviceWorkerFile)}. Skipping version increment.`);
  }
} catch (error) {
  console.error(`Error updating Service Worker cache version in ${serviceWorkerFile}:`, error);
  process.exit(1);
}

console.log('Pre-commit hook finished successfully.');
process.exit(0);