// AAA Production Entry Point – Coinbase Wallet Direct Integration
// ---------------------------------------------------------------
// Version: 2.1.0 - RainbowKit + Wagmi + Early Farcaster Ready
// Essential browser compatibility & node-style globals (Buffer, process, …)

// Initialize environment validation immediately
import { env } from './config/env';
console.log(`[Main] Starting DCW Frontend in ${env.isDev ? 'DEV' : 'PROD'} mode`);

// Debug log export utility (production debugging)
import './utils/debugExport.js';

// =============================================================================
// CRITICAL: EARLY PLATFORM DETECTION & SDK LOADING
// This MUST happen before React mounts to prevent Warpcast reload
// =============================================================================
if (typeof window !== 'undefined') {
  const ua = navigator.userAgent || '';
  const href = window.location.href || '';
  const referrer = document.referrer || '';
  
  // Global diagnostics object for debugging
  window.DCW_DIAGNOSTICS = {
    timestamp: new Date().toISOString(),
    userAgent: ua,
    href: href,
    referrer: referrer,
    hasMiniKit: !!window.miniKit,
    miniKitFrame: window.miniKit?.isFrameContext,
    hasFarcaster: !!window.farcaster,
    hasEthereum: !!window.ethereum,
    ethereumIsBase: !!window.ethereum?.isBase,
    ethereumIsCoinbase: !!window.ethereum?.isCoinbaseWallet,
    isIframe: window.parent !== window,
    detectedPlatform: null,
    sdkReadyCalled: false,
    errors: []
  };
  
  // FARCASTER DETECTION
  const isFarcasterLikely = (
    /warpcast|farcaster/i.test(ua) ||
    /warpcast|farcaster/i.test(referrer) ||
    /warpcast|farcaster|\.fc\./i.test(href) ||
    window.farcaster ||
    window.__farcaster_miniapp__ ||
    (window.miniKit && window.miniKit.isFrameContext === true) ||
    (window.parent !== window && (referrer.includes('warpcast') || referrer.includes('farcaster')))
  );
  
  // BASE DETECTION (Check BEFORE Farcaster to avoid false positives from miniKit)
  const isBaseLikely = !isFarcasterLikely && (
    /base\.app/i.test(referrer) ||
    /base\.app/i.test(href) ||
    window.ethereum?.isBase ||
    window.ethereum?.isBaseMiniKit ||
    window.baseMiniKit ||
    (window.miniKit && window.miniKit.isFrameContext !== true)
  );
  
  console.log('[Main] 🔍 EARLY DETECTION:', {
    isFarcaster: isFarcasterLikely,
    isBase: isBaseLikely,
    ua: ua.substring(0, 60),
    referrer: referrer.substring(0, 60)
  });
  
  if (isFarcasterLikely) {
    window.DCW_DIAGNOSTICS.detectedPlatform = 'farcaster';
    console.log('[Main] 🟣 Farcaster detected EARLY - loading SDK IMMEDIATELY');
    
    // Dynamic import the SDK and call ready() ASAP
    import('@farcaster/miniapp-sdk')
      .then(module => {
        const sdk = module.default || module;
        window.DCW_DIAGNOSTICS.sdkLoaded = true;
        window.DCW_FARCASTER_SDK = sdk;
        
        if (sdk?.actions?.ready) {
          sdk.actions.ready();
          console.log('[Main] 🚀 EARLY sdk.actions.ready() called BEFORE React mount');
          window.DCW_DIAGNOSTICS.sdkReadyCalled = true;
        } else {
          console.warn('[Main] SDK loaded but no actions.ready() method');
          window.DCW_DIAGNOSTICS.errors.push('No actions.ready method');
        }
      })
      .catch(e => {
        console.error('[Main] Early Farcaster SDK load FAILED:', e);
        window.DCW_DIAGNOSTICS.errors.push('SDK load failed: ' + e.message);
      });
  } else if (isBaseLikely) {
    window.DCW_DIAGNOSTICS.detectedPlatform = 'base';
    console.log('[Main] 🔵 Base detected EARLY');
  } else {
    window.DCW_DIAGNOSTICS.detectedPlatform = 'web';
    console.log('[Main] 🌐 Web/Desktop detected');
  }
  
  // Expose debug function
  window.dcwDebug = function() {
    console.log('=== DCW DIAGNOSTICS ===');
    console.table(window.DCW_DIAGNOSTICS);
    return window.DCW_DIAGNOSTICS;
  };
}

// Define ALL globals immediately (before ANY other imports)
if (typeof window !== 'undefined') {
  // Define global first (this is what the polyfill plugins expect)
  window.global = window;

  // Define GLOBAL (some libraries expect this)
  window.GLOBAL = window;

  // Define process
  if (typeof window.process === 'undefined') {
    window.process = {
      env: {},
      browser: true,
      version: 'v18.0.0',
      versions: { node: '18.0.0' },
      platform: 'browser',
      arch: 'web'
    };
  }

  // Define Buffer with complete implementation
  if (typeof window.Buffer === 'undefined') {
    window.Buffer = {
      isBuffer: function (obj) {
        return obj != null && obj._isBuffer === true;
      },
      from: function (data, encoding) {
        if (typeof data === 'string') {
          return new TextEncoder().encode(data);
        }
        if (Array.isArray(data)) {
          return new Uint8Array(data);
        }
        return new Uint8Array(data);
      },
      alloc: function (size) {
        return new Uint8Array(size);
      },
      allocUnsafe: function (size) {
        return new Uint8Array(size);
      },
      concat: function (buffers) {
        let totalLength = 0;
        for (const buffer of buffers) {
          totalLength += buffer.length;
        }
        const result = new Uint8Array(totalLength);
        let offset = 0;
        for (const buffer of buffers) {
          result.set(buffer, offset);
          offset += buffer.length;
        }
        return result;
      },
      byteLength: function (string, encoding) {
        return new TextEncoder().encode(string).length;
      }
    };
    console.log('[Main] All globals defined');
  }
}

// Import polyfills
import './polyfills/nodeGlobals.js'; // Additional global shims

// Verify globals are available
console.log('[Main] Globals status:', {
  hasBuffer: !!window.Buffer,
  hasGlobal: !!window.global,
  hasProcess: !!window.process
});

import React from 'react';
import ReactDOM from 'react-dom/client';
import App from './App';
import './App.css';
import './index.css';

// Farcaster Mini App Bridge
import { initFrameBridge } from './engine/frameBridge.js';

// Initialize Farcaster SDK if in a Frame environment
// This is safe to call unconditionally as it performs its own environment checks
initFrameBridge().catch(err => {
  console.error('[Main] Failed to initialize Frame Bridge:', err);
});

// Expose device helpers for E2E tests
import * as device from './engine/device.js';
if (typeof window !== 'undefined') {
  window.DCW_Device = device;
}

// ---------------------------------------------------------------------------
// React root
// ---------------------------------------------------------------------------

const rootEl = document.getElementById('root');
ReactDOM.createRoot(rootEl).render(
  <React.StrictMode>
    <App />
  </React.StrictMode>,
);