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

async function executeScriptOnCurrentTab(scriptFile) {
  try {
    // Get list of tabs from Chrome DevTools Protocol
    const response = await axios.get('http://localhost:9222/json');
    const tabs = response.data;
    
    // Find the first page tab (not extensions or devtools)
    const targetTab = tabs.find(tab => tab.type === 'page');
    
    if (!targetTab) {
      console.error('No active page tab found. Make sure Chrome is running with --remote-debugging-port=9222');
      process.exit(1);
    }
    
    console.log(`Found tab: ${targetTab.title}`);
    console.log(`URL: ${targetTab.url}`);
    
    // Read the script content
    const scriptContent = fs.readFileSync(scriptFile, 'utf-8');
    
    // Connect to the WebSocket debugger URL
    const WebSocket = require('ws');
    const ws = new WebSocket(targetTab.webSocketDebuggerUrl);
    
    ws.on('open', () => {
      console.log('Connected to Chrome DevTools');
      
      // Send Runtime.evaluate command to execute the script
      ws.send(JSON.stringify({
        id: 1,
        method: 'Runtime.evaluate',
        params: {
          expression: scriptContent,
          returnByValue: true
        }
      }));
    });
    
    ws.on('message', (data) => {
      const message = JSON.parse(data);
      
      if (message.id === 1) {
        if (message.result.exceptionDetails) {
          console.error('Script execution error:', message.result.exceptionDetails);
        } else {
          console.log('Script executed successfully');
          if (message.result.result.value !== undefined) {
            console.log('Result:', message.result.result.value);
          }
        }
        ws.close();
        process.exit(0);
      }
    });
    
    ws.on('error', (error) => {
      console.error('WebSocket error:', error);
      process.exit(1);
    });
    
  } catch (error) {
    if (error.code === 'ECONNREFUSED') {
      console.error('Could not connect to Chrome. Make sure Chrome is running with:');
      console.error('chrome.exe --remote-debugging-port=9222');
    } else {
      console.error('Error:', error.message);
    }
    process.exit(1);
  }
}

const scriptFile = process.argv[2];

if (!scriptFile) {
  console.error('Usage: node run-script.js <script-file>');
  process.exit(1);
}

if (!fs.existsSync(scriptFile)) {
  console.error(`Script file not found: ${scriptFile}`);
  process.exit(1);
}

executeScriptOnCurrentTab(scriptFile);