#!/usr/bin/env node
// packages/broadcast-panel/e2e/dify-plugin-playwright.mjs
// Minimal Playwright "plugin" runner inspired by dify-plugin-playwright
// Usage (CLI):
//   node dify-plugin-playwright.mjs --ws ws://localhost:3003 --url http://localhost:5176 --out /tmp/dify-shot.png
// Or import and call runPlaywright(options)

import { chromium } from 'playwright';
import fs from 'fs';
import path from 'path';

async function runPlaywright({ wsEndpoint, url, out = '/tmp/dify-playwright-shot.png', steps = [] }){
  const result = { success: false, wsEndpoint, url, out, steps: [], error: null, used: null };
  let browser;
  try{
    // Try to connect to remote Playwright server if wsEndpoint provided
    if(wsEndpoint){
      result.steps.push(`attempt_connect:${wsEndpoint}`);
      try{
        browser = await chromium.connect({ wsEndpoint, timeout: 30000 });
        result.used = 'remote';
        result.steps.push({ action: 'connect', ok: true, meta: { wsEndpoint } });
      }catch(connectErr){
        // Log the error and fallback to launching local browser
        const em = String(connectErr && (connectErr.stack || connectErr.message || connectErr));
        result.steps.push({ action: 'connect', ok: false, meta: { error: em } });
        result.steps.push({ action: 'fallback', ok: true, meta: { reason: 'connect-failed, launching local chromium' } });
        try{
          browser = await chromium.launch({ headless: true });
          result.used = 'local-launch';
          result.steps.push({ action: 'launch', ok: true, meta: { launched: true } });
        }catch(launchErr){
          result.error = 'Failed to connect remote and failed to launch local chromium: ' + String(launchErr && (launchErr.stack || launchErr.message));
          return result;
        }
      }
    } else {
      // No wsEndpoint provided -> launch local
      result.steps.push('no-wsendpoint-launch-local');
      browser = await chromium.launch({ headless: true });
      result.used = 'local-launch';
      result.steps.push({ action: 'launch', ok: true });
    }

    const context = await browser.newContext();
    const page = await context.newPage();

    // default flow if no custom steps
    if(!steps || steps.length === 0){
      steps = [
        { action: 'goto', url },
        { action: 'wait', ms: 1000 },
        { action: 'clickText', text: 'Entrar al Estudio' },
        { action: 'wait', ms: 1000 },
        { action: 'screenshot', path: out }
      ];
    }

    for(const s of steps){
      const step = { action: s.action || 'unknown', ok: false, meta: null };
      try{
        if(s.action === 'goto'){
          await page.goto(s.url, { waitUntil: 'networkidle', timeout: s.timeout || 30000 });
          step.ok = true; step.meta = { url: page.url() };
        } else if(s.action === 'wait'){
          await page.waitForTimeout(s.ms || 500);
          step.ok = true;
        } else if(s.action === 'clickText'){
          const locator = page.locator(`text=${s.text}`);
          const c = await locator.count();
          if(c > 0){ await locator.first().click({ timeout: 5000 }); step.ok = true; } else { step.ok = false; step.meta = { found: 0 }; }
        } else if(s.action === 'type'){
          await page.locator(s.selector).fill(s.text); step.ok = true;
        } else if(s.action === 'screenshot'){
          const p = s.path || out;
          await page.screenshot({ path: p, fullPage: true }); step.ok = true; step.meta = { path: p };
        } else if(s.action === 'eval'){
          const r = await page.evaluate(s.fn);
          step.ok = true; step.meta = { result: r };
        } else {
          // unknown
          step.ok = false; step.meta = { reason: 'unknown action' };
        }
      }catch(err){
        step.ok = false; step.meta = { error: String(err && (err.stack || err.message || err)) };
      }
      result.steps.push(step);
    }

    result.success = result.steps.every(st => typeof st === 'object' ? st.ok || st.action==='connect' : true);

    await context.close();
    try{ await browser.close(); }catch(e){}
    return result;
  }catch(err){
    if(browser){ try{ await browser.close(); }catch(e){} }
    result.error = String(err && (err.stack || err.message || err));
    return result;
  }
}

// CLI runner
if(process.argv[1] && process.argv[1].endsWith('dify-plugin-playwright.mjs')){
  // parse args simply
  const args = process.argv.slice(2);
  const opts = {};
  for(let i=0;i<args.length;i++){
    if(args[i] === '--ws') opts.wsEndpoint = args[++i];
    if(args[i] === '--url') opts.url = args[++i];
    if(args[i] === '--out') opts.out = args[++i];
  }
  if(!opts.url) opts.url = process.env.BROADCAST_URL || 'http://localhost:5176';
  if(!opts.wsEndpoint) opts.wsEndpoint = process.env.PW_WS || 'ws://localhost:3003';
  (async ()=>{
    const res = await runPlaywright({ wsEndpoint: opts.wsEndpoint, url: opts.url, out: opts.out });
    console.log(JSON.stringify(res, null, 2));
    if(!res.success) process.exit(2);
    process.exit(0);
  })();
}

export { runPlaywright };