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

function walkDir(dir, callback) {
  fs.readdirSync(dir).forEach(f => {
    let dirPath = path.join(dir, f);
    let isDirectory = fs.statSync(dirPath).isDirectory();
    if (isDirectory) {
      walkDir(dirPath, callback);
    } else {
      callback(dirPath);
    }
  });
}

const icons = new Set();

walkDir(path.join(__dirname, '../src/app'), (filePath) => {
  if (filePath.endsWith('.html') || filePath.endsWith('.ts')) {
    const content = fs.readFileSync(filePath, 'utf8');
    // Match name="icon-name"
    const nameMatches = content.matchAll(/name=["']([a-zA-Z0-9-]+)["']/g);
    for (const match of nameMatches) {
      icons.add(match[1]);
    }
    // Match [name]="... ? 'icon-a' : 'icon-b'"
    const ternaryMatches = content.matchAll(/'([a-zA-Z0-9-]+-outline|[a-zA-Z0-9-]+-sharp|[a-zA-Z0-9-]+)'/g);
    for (const match of ternaryMatches) {
      icons.add(match[1]);
    }
  }
});

console.log(JSON.stringify(Array.from(icons).sort(), null, 2));