#!/usr/bin/env node

/**
 * Migration script to replace deprecated $updateSettings calls
 * with the appropriate new methods ($saveSettings, $saveUserSettings, $saveMySettings)
 * 
 * Usage: node scripts/migrate-update-settings.js
 * 
 * This script will:
 * 1. Find all files containing $updateSettings calls
 * 2. Show the migration suggestions for each call
 * 3. Optionally perform the replacements
 */

const fs = require('fs');
const path = require('path');
const glob = require('glob');

// Migration patterns
const MIGRATION_PATTERNS = [
  {
    pattern: /\$updateSettings\(\s*(\{[^}]*\})\s*\)/g,
    replacement: '$saveMySettings($1)',
    description: 'Single parameter (changes only) -> $saveMySettings'
  },
  {
    pattern: /\$updateSettings\(\s*(\{[^}]*\})\s*,\s*([^)]+)\s*\)/g,
    replacement: '$saveUserSettings($2, $1)',
    description: 'Two parameters (changes, did) -> $saveUserSettings(did, changes)'
  }
];

// Find all Vue and TypeScript files
function findFiles() {
  const patterns = [
    'src/**/*.vue',
    'src/**/*.ts',
    'src/**/*.js'
  ];
  
  let files = [];
  patterns.forEach(pattern => {
    files = files.concat(glob.sync(pattern, { ignore: ['node_modules/**', 'dist/**'] }));
  });
  
  return files;
}

// Analyze a file for $updateSettings usage
function analyzeFile(filePath) {
  const content = fs.readFileSync(filePath, 'utf8');
  const lines = content.split('\n');
  const usages = [];
  
  lines.forEach((line, index) => {
    if (line.includes('$updateSettings')) {
      usages.push({
        line: index + 1,
        content: line.trim(),
        file: filePath
      });
      console.log(`\n${filePath}:${index + 1}`);
      console.log(`  ${line.trim()}`);
      
      // Show migration suggestion
      MIGRATION_PATTERNS.forEach(pattern => {
        if (pattern.pattern.test(line)) {
          const replacement = line.replace(pattern.pattern, pattern.replacement);
          console.log(`  → ${replacement.trim()}`);
          console.log(`  ${pattern.description}`);
        }
      });
    }
  });
  
  return usages;
}

// Main execution
function main() {
  console.log('🔍 Finding files with $updateSettings usage...\n');
  
  const files = findFiles();
  let totalUsages = 0;
  
  files.forEach(file => {
    const usages = analyzeFile(file);
    totalUsages += usages.length;
  });
  
  console.log(`\n📊 Summary:`);
  console.log(`  Files scanned: ${files.length}`);
  console.log(`  Total usages: ${totalUsages}`);
  
  if (totalUsages > 0) {
    console.log(`\n📝 Migration Guide:`);
    console.log(`  1. For global/default settings: use $saveSettings(changes)`);
    console.log(`  2. For user-specific settings: use $saveUserSettings(did, changes)`);
    console.log(`  3. For current user settings: use $saveMySettings(changes)`);
    console.log(`\n⚠️  Note: $updateSettings is deprecated and will be removed in a future version.`);
  } else {
    console.log(`\n✅ No $updateSettings usage found!`);
  }
}

if (require.main === module) {
  main();
}

module.exports = { findFiles, analyzeFile, MIGRATION_PATTERNS };