(function () {
  const vscode = acquireVsCodeApi();

  // Debug logging is opt-in to avoid flooding the devtools console.
  // Enable by running in the webview devtools console:
  //   localStorage.setItem('ac:webviewDebug','1')
  // and then reloading the webview.
  const DEBUG = (() => {
    try {
      return localStorage.getItem('ac:webviewDebug') === '1';
    } catch {
      return false;
    }
  })();

  // Send session data to iframe
  const iframe = document.getElementById("aesthetic");

  iframe.classList.add("visible");
  
  // ♻️ Iframe ready state tracking (declared early for message handler access)
  let readyTimeout = null;
  let loadTimeout = null;
  let refreshCount = 0;
  let isReady = false;
  const maxRefreshAttempts = 5;
  
  // Helper to clear all pending timeouts
  function clearAllTimeouts() {
    if (readyTimeout) {
      clearTimeout(readyTimeout);
      readyTimeout = null;
    }
    if (loadTimeout) {
      clearTimeout(loadTimeout);
      loadTimeout = null;
    }
  }

  // Handle messages sent from the extension to the webview AND from the iframe
  window.addEventListener("message", (event) => {
    const message = event.data; // The json data that the extension sent
    if (DEBUG) {
      // Avoid flooding logs with boot chatter unless debugging.
      if (message?.type !== 'boot-log') {
        console.log(
          "📶 Message:",
          message,
          "from:",
          event.source === iframe.contentWindow ? "iframe" : "extension",
        );
      }
    }
    switch (message.type) {
      case "vscode-extension:reload": {
        vscode.postMessage({ type: "vscode-extension:reload" });
        break;
      }
      case "vscode-extension:defocus": {
        vscode.postMessage({ type: "vscode-extension:defocus" });
        break;
      }
      case "setSession": {
        // window.aestheticSession = message.session;
        // sendSessionToIframe(message.session);
        break;
      }
      case "clipboard:copy": {
        // console.log("📎 Copying clipboard message...");
        vscode.postMessage({ type: "clipboard:copy", value: message.value });
        break;
      }
      case "url:updated": {
        vscode.postMessage({ type: "url:updated", slug: message.slug });
        break;
      }
      case "clipboard:copy:confirmation": {
        iframe.contentWindow.postMessage(
          { type: "clipboard:copy:confirmation" },
          "*",
        );
        break;
      }
      // case "aesthetic-panel:open": {
      //   console.log("🪧 Posting panel opener...");
      //   iframe.contentWindow.postMessage({ type: "aesthetic-panel:open" }, "*");
      //   break;
      // }
      case "publish": {
        vscode.postMessage({
          type: "publish",
          url: message.url,
        });
        break;
      }
      case "setCode": {
        vscode.postMessage({ type: "setCode", value: message.value });
        break;
      }
      case "runPiece": {
        vscode.postMessage({ type: "runPiece" });
        break;
      }
      case "openDocs": {
        vscode.postMessage({ type: "openDocs" });
        break;
      }
      case "openSource": {
        vscode.postMessage({
          type: "openSource",
          title: message.title,
          source: message.source,
        });
        break;
      }
      case "login": {
        vscode.postMessage({
          type: "login",
          tenant: message.tenant || "aesthetic",
        });
        break;
      }
      case "logout": {
        vscode.postMessage({
          type: "logout",
          tenant: message.tenant || "aesthetic",
        });
        break;
      }
      case "openExternal": {
        vscode.postMessage({
          type: "openExternal",
          url: message.url,
        });
        break;
      }
      case "ready": {
        if (isReady) break; // Already handled, ignore duplicate ready messages
        console.log("🫐 ✅ Received ready message, clearing timeout");
        clearAllTimeouts();
        isReady = true;
        break;
      }
      default: {
        // If debugging is enabled, surface unknown message types.
        if (DEBUG && message?.type) {
          console.log("🫐 Unhandled message type:", message.type);
        }
      }
    }
  });

  // Add event listener for when the window is focused.
  // Only send on actual blur→focus transitions to prevent spurious re-focus
  // events from clearing prompt text and reopening the keyboard curtain.
  let parentHadFocus = document.hasFocus();
  window.addEventListener("blur", () => {
    parentHadFocus = false;
  });
  window.addEventListener("focus", () => {
    if (!parentHadFocus) {
      parentHadFocus = true;
      iframe.contentWindow.postMessage({ type: "aesthetic-parent:focused" }, "*");
    }
  });

  // ♻️ Start the refresh timeout cycle
  readyTimeout = setTimeout(refresh, 5000);

  function refresh() {
    if (isReady) {
      // Already ready, don't refresh
      return;
    }
    refreshCount++;
    if (refreshCount > maxRefreshAttempts) {
      console.log("🫐 Max refresh attempts reached, assuming ready");
      clearTimeout(readyTimeout);
      readyTimeout = null;
      isReady = true; // Prevent further refreshes
      return;
    }
    console.log(`🫐 Awaiting... (attempt ${refreshCount}/${maxRefreshAttempts})`);
    
    // Post a message to the iframe to show retry status in boot log
    try {
      iframe.contentWindow?.postMessage({ 
        type: "boot-retry", 
        attempt: refreshCount, 
        maxAttempts: maxRefreshAttempts 
      }, "*");
    } catch (e) {
      // Iframe might not be ready yet
    }
    
    const url = new URL(iframe.src);
    url.searchParams.set("ac-timestamp", new Date().getTime());
    iframe.src = url.href;
    readyTimeout = setTimeout(refresh, 5000);
  }
  
  // Also listen for iframe load event as a fallback
  iframe.addEventListener('load', () => {
    if (isReady) return; // Already handled
    console.log("🫐 Iframe loaded");
    // Give the iframe content a bit of time to initialize and send ready message
    loadTimeout = setTimeout(() => {
      if (!isReady && readyTimeout) {
        console.log("🫐 Clearing timeout after iframe load (fallback)");
        clearAllTimeouts();
        isReady = true;
      }
    }, 2000);
  });
})();