SSR Hydration

/**
 * Utilities for hydration markup generation and processing
 */
const HydrationMarkup: {
  /** The attribute name used to mark hydratable elements */
  readonly attributeMarkerName: string;
  
  /**
   * Creates a start marker for content binding hydration
   * @param index - The binding index
   * @param targetNodeId - The ID of the target node
   * @returns HTML comment marker string
   */
  contentBindingStartMarker(index: number, targetNodeId: string): string;
  
  /**
   * Creates an end marker for content binding hydration
   * @param index - The binding index
   * @returns HTML comment marker string
   */
  contentBindingEndMarker(index: number): string;
  
  /**
   * Creates a marker for attribute binding hydration
   * @param index - The binding index
   * @param targetNodeId - The ID of the target node
   * @param attributeName - The name of the attribute
   * @returns HTML comment marker string
   */
  attributeBindingMarker(index: number, targetNodeId: string, attributeName: string): string;
  
  /**
   * Parses hydration markers from HTML content
   * @param html - The HTML content to parse
   * @returns Parsed hydration information
   */
  parseHydrationMarkers(html: string): HydrationInfo;
};

/**
 * Hydration information extracted from markers
 */
interface HydrationInfo {
  /** Content binding locations */
  contentBindings: Array<{
    index: number;
    targetNodeId: string;
    startNode: Comment;
    endNode: Comment;
  }>;
  
  /** Attribute binding locations */
  attributeBindings: Array<{
    index: number;
    targetNodeId: string;
    attributeName: string;
    marker: Comment;
  }>;
  
  /** Hydratable elements */
  hydratableElements: Array<{
    element: Element;
    templateId: string;
  }>;
}

import { ViewTemplate, html } from "@microsoft/fast-element";
import { HydrationMarkup } from "@microsoft/fast-element/element-hydration.js";

// Template that supports hydration
const userCardTemplate = html<UserCard>`
  <div class="user-card" ${HydrationMarkup.attributeMarker('data-user-id', x => x.userId)}>
    ${HydrationMarkup.contentBindingStartMarker(0, 'user-name')}
    <h2 id="user-name">${x => x.name}</h2>
    ${HydrationMarkup.contentBindingEndMarker(0)}
    
    ${HydrationMarkup.contentBindingStartMarker(1, 'user-email')}
    <p id="user-email">${x => x.email}</p>
    ${HydrationMarkup.contentBindingEndMarker(1)}
    
    <div class="user-stats">
      ${HydrationMarkup.contentBindingStartMarker(2, 'post-count')}
      <span id="post-count">Posts: ${x => x.postCount}</span>
      ${HydrationMarkup.contentBindingEndMarker(2)}
      
      ${HydrationMarkup.contentBindingStartMarker(3, 'follower-count')}  
      <span id="follower-count">Followers: ${x => x.followerCount}</span>
      ${HydrationMarkup.contentBindingEndMarker(3)}
    </div>
  </div>
`;

// Server-side rendering function
function renderUserCardSSR(userData: UserData): string {
  // Server-side template rendering with hydration markers
  let html = `
    <div class="user-card" data-user-id="${userData.userId}" ${HydrationMarkup.attributeMarkerName}="user-card-template">
      ${HydrationMarkup.contentBindingStartMarker(0, 'user-name')}
      <h2 id="user-name">${userData.name}</h2>
      ${HydrationMarkup.contentBindingEndMarker(0)}
      
      ${HydrationMarkup.contentBindingStartMarker(1, 'user-email')}
      <p id="user-email">${userData.email}</p>
      ${HydrationMarkup.contentBindingEndMarker(1)}
      
      <div class="user-stats">
        ${HydrationMarkup.contentBindingStartMarker(2, 'post-count')}
        <span id="post-count">Posts: ${userData.postCount}</span>
        ${HydrationMarkup.contentBindingEndMarker(2)}
        
        ${HydrationMarkup.contentBindingStartMarker(3, 'follower-count')}
        <span id="follower-count">Followers: ${userData.followerCount}</span>
        ${HydrationMarkup.contentBindingEndMarker(3)}
      </div>
    </div>
  `;
  
  return html;
}

// Client-side hydration process
class HydrationManager {
  static hydrateUserCard(element: Element, userData: UserData): UserCard {
    // Parse hydration info
    const hydrationInfo = HydrationMarkup.parseHydrationMarkers(element.outerHTML);
    
    // Create component instance
    const userCard = new UserCard();
    userCard.userId = userData.userId;
    userCard.name = userData.name;
    userCard.email = userData.email;
    userCard.postCount = userData.postCount;
    userCard.followerCount = userData.followerCount;
    
    // Hydrate the element
    this.hydrateElement(userCard, element, hydrationInfo);
    
    return userCard;
  }
  
  private static hydrateElement(
    component: any, 
    element: Element, 
    hydrationInfo: HydrationInfo
  ): void {
    // Process content bindings
    hydrationInfo.contentBindings.forEach(binding => {
      const targetElement = element.querySelector(`#${binding.targetNodeId}`);
      if (targetElement) {
        // Establish reactive binding for content
        this.establishContentBinding(component, targetElement, binding.index);
      }
    });
    
    // Process attribute bindings  
    hydrationInfo.attributeBindings.forEach(binding => {
      const targetElement = element.querySelector(`#${binding.targetNodeId}`);
      if (targetElement) {
        // Establish reactive binding for attribute
        this.establishAttributeBinding(
          component, 
          targetElement, 
          binding.attributeName, 
          binding.index
        );
      }
    });
  }
  
  private static establishContentBinding(
    component: any, 
    element: Element, 
    bindingIndex: number
  ): void {
    // Set up reactive content binding
    Observable.getNotifier(component).subscribe({
      handleChange: () => {
        // Update content based on component state
        this.updateElementContent(component, element, bindingIndex);
      }
    });
  }
  
  private static establishAttributeBinding(
    component: any, 
    element: Element, 
    attributeName: string,
    bindingIndex: number
  ): void {
    // Set up reactive attribute binding
    Observable.getNotifier(component).subscribe({
      handleChange: () => {
        // Update attribute based on component state
        this.updateElementAttribute(component, element, attributeName, bindingIndex);
      }
    });
  }
  
  private static updateElementContent(
    component: any, 
    element: Element, 
    bindingIndex: number
  ): void {
    // Update logic based on binding index and component state
    switch (bindingIndex) {
      case 0: // User name
        element.textContent = component.name;
        break;
      case 1: // User email
        element.textContent = component.email;
        break;
      case 2: // Post count
        element.textContent = `Posts: ${component.postCount}`;
        break;
      case 3: // Follower count
        element.textContent = `Followers: ${component.followerCount}`;
        break;
    }
  }
  
  private static updateElementAttribute(
    component: any, 
    element: Element, 
    attributeName: string,
    bindingIndex: number
  ): void {
    // Update attribute based on component state
    if (attributeName === 'data-user-id') {
      element.setAttribute(attributeName, component.userId);
    }
  }
}

interface UserData {
  userId: string;
  name: string;
  email: string;
  postCount: number;
  followerCount: number;
}

class UserCard {
  userId: string = '';
  name: string = '';
  email: string = '';
  postCount: number = 0;
  followerCount: number = 0;
}

/**
 * Checks if an object supports hydration
 * @param obj - The object to check
 * @returns True if the object is hydratable
 */
function isHydratable(obj: any): obj is { [Hydratable]: true };

/**
 * Symbol that marks an object as hydratable
 */
const Hydratable: unique symbol;

/**
 * Element view template that supports hydration
 */
interface HydratableElementViewTemplate<TSource = any, TParent = any>
  extends ElementViewTemplate<TSource, TParent> {
  
  /**
   * Hydrates an element view from server-rendered content
   * @param firstChild - First child node of the hydration range
   * @param lastChild - Last child node of the hydration range
   * @param hostBindingTarget - The element that host behaviors will be bound to
   */
  hydrate(
    firstChild: Node,
    lastChild: Node,
    hostBindingTarget?: Element
  ): ElementView<TSource, TParent>;
}

/**
 * Synthetic view template that supports hydration
 */
interface HydratableSyntheticViewTemplate<TSource = any, TParent = any>
  extends SyntheticViewTemplate<TSource, TParent> {
  
  /**
   * Hydrates a synthetic view from server-rendered content
   * @param firstChild - First child node of the hydration range
   * @param lastChild - Last child node of the hydration range
   */
  hydrate(firstChild: Node, lastChild: Node): SyntheticView<TSource, TParent>;
}

/**
 * View interface that supports hydration
 */
interface HydratableView extends HTMLView {
  /** Indicates this view supports hydration */
  readonly isHydratable: true;
  
  /**
   * Hydrates the view from existing DOM content
   * @param firstChild - First child node to hydrate
   * @param lastChild - Last child node to hydrate
   */
  hydrate(firstChild: Node, lastChild: Node): void;
}

import { 
  isHydratable, 
  Hydratable, 
  HydratableElementViewTemplate,
  ViewTemplate,
  html,
  FASTElement,
  customElement
} from "@microsoft/fast-element";

// Create hydratable template
function createHydratableTemplate<T>(): HydratableElementViewTemplate<T> {
  const template = html<T>`
    <div class="hydratable-content">
      <h1>${x => (x as any).title}</h1>
      <p>${x => (x as any).description}</p>
    </div>
  `;
  
  // Mark template as hydratable
  (template as any)[Hydratable] = true;
  
  // Add hydration method
  (template as any).hydrate = function(
    firstChild: Node,
    lastChild: Node,
    hostBindingTarget?: Element
  ) {
    // Create view from existing DOM
    const view = this.create(hostBindingTarget);
    
    // Hydrate from existing nodes
    view.hydrate(firstChild, lastChild);
    
    return view;
  };
  
  return template as HydratableElementViewTemplate<T>;
}

// Hydratable component
@customElement("hydratable-component")
export class HydratableComponent extends FASTElement {
  title: string = "Default Title";
  description: string = "Default Description";
  
  // Use hydratable template
  static template = createHydratableTemplate<HydratableComponent>();
  
  // Support SSR hydration
  static supportsHydration = true;
  
  connectedCallback() {
    super.connectedCallback();
    
    // Check if this component needs hydration
    if (this.needsHydration()) {
      this.performHydration();
    }
  }
  
  private needsHydration(): boolean {
    // Check for hydration markers or server-rendered content
    return this.hasAttribute('data-ssr') || 
           this.querySelector('[data-hydration-marker]') !== null;
  }
  
  private performHydration(): void {
    if (isHydratable(HydratableComponent.template)) {
      // Get existing content range
      const firstChild = this.shadowRoot?.firstChild;
      const lastChild = this.shadowRoot?.lastChild;
      
      if (firstChild && lastChild) {
        // Perform hydration
        const view = HydratableComponent.template.hydrate(
          firstChild,
          lastChild,
          this
        );
        
        // Bind to current component data
        view.bind(this);
      }
    }
  }
}

// SSR rendering utility
class SSRRenderer {
  static renderComponentToString<T>(
    template: HydratableElementViewTemplate<T>,
    data: T
  ): string {
    if (!isHydratable(template)) {
      throw new Error('Template must be hydratable for SSR');
    }
    
    // Server-side rendering logic
    return this.renderTemplateWithData(template, data);
  }
  
  private static renderTemplateWithData<T>(
    template: HydratableElementViewTemplate<T>,
    data: T
  ): string {
    // Simplified SSR rendering
    // In real implementation, this would involve proper template processing
    
    const title = (data as any).title || 'Default Title';
    const description = (data as any).description || 'Default Description';
    
    return `
      <div class="hydratable-content" data-ssr="true">
        <!-- ${HydrationMarkup.contentBindingStartMarker(0, 'title')} -->
        <h1>${title}</h1>
        <!-- ${HydrationMarkup.contentBindingEndMarker(0)} -->
        
        <!-- ${HydrationMarkup.contentBindingStartMarker(1, 'description')} -->
        <p>${description}</p>
        <!-- ${HydrationMarkup.contentBindingEndMarker(1)} -->
      </div>
    `;
  }
}

// Client-side hydration orchestrator
class HydrationOrchestrator {
  private hydrationQueue: Array<{
    element: Element;
    component: any;
    template: HydratableElementViewTemplate<any>;
  }> = [];
  
  queueForHydration<T>(
    element: Element,
    component: T,
    template: HydratableElementViewTemplate<T>
  ): void {
    if (!isHydratable(template)) {
      console.warn('Template is not hydratable, skipping hydration queue');
      return;
    }
    
    this.hydrationQueue.push({ element, component, template });
  }
  
  async processHydrationQueue(): Promise<void> {
    for (const item of this.hydrationQueue) {
      try {
        await this.hydrateComponent(item);
      } catch (error) {
        console.error('Hydration failed for component:', error);
      }
    }
    
    this.hydrationQueue = [];
  }
  
  private async hydrateComponent(item: {
    element: Element;
    component: any;
    template: HydratableElementViewTemplate<any>;
  }): Promise<void> {
    const { element, component, template } = item;
    
    // Find hydration range
    const shadowRoot = element.shadowRoot;
    if (!shadowRoot) {
      throw new Error('Element must have shadow root for hydration');
    }
    
    const firstChild = shadowRoot.firstChild;
    const lastChild = shadowRoot.lastChild;
    
    if (firstChild && lastChild) {
      // Perform hydration
      const view = template.hydrate(firstChild, lastChild, element);
      
      // Bind to component data
      view.bind(component);
      
      // Mark as hydrated
      element.setAttribute('data-hydrated', 'true');
    }
  }
}

// Application setup with SSR hydration
class SSRApp {
  private hydrationOrchestrator = new HydrationOrchestrator();
  
  async initializeWithHydration(): Promise<void> {
    // Find all server-rendered components
    const ssrElements = document.querySelectorAll('[data-ssr]');
    
    for (const element of ssrElements) {
      await this.setupComponentHydration(element);
    }
    
    // Process all queued hydrations
    await this.hydrationOrchestrator.processHydrationQueue();
  }
  
  private async setupComponentHydration(element: Element): Promise<void> {
    const tagName = element.tagName.toLowerCase();
    
    // Map element to component class and template
    const componentInfo = this.getComponentInfo(tagName);
    if (!componentInfo) {
      return;
    }
    
    const { componentClass, template } = componentInfo;
    
    // Create component instance
    const component = new componentClass();
    
    // Extract data from SSR attributes or content
    this.populateComponentFromSSR(component, element);
    
    // Queue for hydration
    this.hydrationOrchestrator.queueForHydration(
      element,
      component,
      template
    );
  }
  
  private getComponentInfo(tagName: string): {
    componentClass: any;
    template: HydratableElementViewTemplate<any>;
  } | null {
    // Component registry lookup
    const registry: Record<string, any> = {
      'hydratable-component': {
        componentClass: HydratableComponent,
        template: HydratableComponent.template
      }
    };
    
    return registry[tagName] || null;
  }
  
  private populateComponentFromSSR(component: any, element: Element): void {
    // Extract component data from SSR attributes or content
    const title = element.querySelector('h1')?.textContent;
    const description = element.querySelector('p')?.textContent;
    
    if (title) component.title = title;
    if (description) component.description = description;
  }
}

// Initialize SSR hydration
const ssrApp = new SSRApp();
document.addEventListener('DOMContentLoaded', () => {
  ssrApp.initializeWithHydration().then(() => {
    console.log('SSR hydration completed');
  }).catch(error => {
    console.error('SSR hydration failed:', error);
  });
});

/**
 * Error thrown when hydration fails due to content mismatch
 */
class HydrationBindingError extends Error {
  /**
   * Creates a hydration binding error
   * @param message - Error message
   * @param propertyBag - Additional error information
   */
  constructor(
    message: string | undefined,
    public readonly propertyBag: {
      index: number;
      hydrationStage: string;
      itemsLength?: number;
      viewsState: string[];
      viewTemplateString?: string;
      rootNodeContent: string;
    }
  );
}

/**
 * Hydration validation utilities
 */
const HydrationValidator: {
  /**
   * Validates that server and client content match
   * @param serverContent - Content from server-side rendering
   * @param clientTemplate - Client-side template
   * @param data - Data used for rendering
   * @returns Validation result
   */
  validateContentMatch(
    serverContent: string,
    clientTemplate: ViewTemplate,
    data: any
  ): HydrationValidationResult;
  
  /**
   * Checks for common hydration issues
   * @param element - Element being hydrated
   * @returns Array of potential issues
   */
  checkForHydrationIssues(element: Element): HydrationIssue[];
  
  /**
   * Enables debug mode for hydration
   * @param enabled - Whether to enable debug mode
   */
  setDebugMode(enabled: boolean): void;
};

/**
 * Result of hydration validation
 */
interface HydrationValidationResult {
  /** Whether validation passed */
  isValid: boolean;
  
  /** List of validation errors */
  errors: HydrationValidationError[];
  
  /** List of validation warnings */
  warnings: HydrationValidationWarning[];
}

/**
 * Hydration validation error
 */
interface HydrationValidationError {
  /** Error type */
  type: 'content-mismatch' | 'structure-mismatch' | 'missing-marker';
  
  /** Error message */
  message: string;
  
  /** Expected content */
  expected: string;
  
  /** Actual content */
  actual: string;
  
  /** Location of error */
  location: {
    bindingIndex?: number;
    elementPath?: string;
  };
}

/**
 * Hydration validation warning
 */
interface HydrationValidationWarning {
  /** Warning type */
  type: 'performance' | 'accessibility' | 'seo';
  
  /** Warning message */
  message: string;
  
  /** Suggested fix */
  suggestion?: string;
}

/**
 * Potential hydration issue
 */
interface HydrationIssue {
  /** Issue severity */
  severity: 'error' | 'warning' | 'info';
  
  /** Issue category */
  category: 'content' | 'structure' | 'performance' | 'accessibility';
  
  /** Issue description */
  description: string;
  
  /** Element causing the issue */
  element: Element;
  
  /** Suggested resolution */
  resolution?: string;
}

import { 
  HydrationBindingError,
  HydrationValidator,
  HydrationValidationResult 
} from "@microsoft/fast-element";

// Hydration error handler
class HydrationErrorHandler {
  static handleHydrationError(error: HydrationBindingError): void {
    console.group('Hydration Error Details');
    console.error('Message:', error.message);
    console.log('Binding Index:', error.propertyBag.index);
    console.log('Hydration Stage:', error.propertyBag.hydrationStage);
    console.log('Views State:', error.propertyBag.viewsState);
    console.log('Root Node Content:', error.propertyBag.rootNodeContent);
    
    if (error.propertyBag.viewTemplateString) {
      console.log('Template:', error.propertyBag.viewTemplateString);
    }
    
    console.groupEnd();
    
    // Attempt recovery
    this.attemptHydrationRecovery(error);
  }
  
  private static attemptHydrationRecovery(error: HydrationBindingError): void {
    // Recovery strategies based on error stage
    switch (error.propertyBag.hydrationStage) {
      case 'content-binding':
        this.recoverContentBinding(error);
        break;
      case 'attribute-binding':
        this.recoverAttributeBinding(error);
        break;
      case 'event-binding':
        this.recoverEventBinding(error);
        break;
      default:
        console.warn('No recovery strategy available for stage:', error.propertyBag.hydrationStage);
    }
  }
  
  private static recoverContentBinding(error: HydrationBindingError): void {
    console.log('Attempting content binding recovery...');
    // Implement content binding recovery logic
  }
  
  private static recoverAttributeBinding(error: HydrationBindingError): void {
    console.log('Attempting attribute binding recovery...');
    // Implement attribute binding recovery logic
  }
  
  private static recoverEventBinding(error: HydrationBindingError): void {
    console.log('Attempting event binding recovery...');
    // Implement event binding recovery logic
  }
}

// Hydration debugging utility
class HydrationDebugger {
  private static debugMode = false;
  
  static enableDebugMode(): void {
    this.debugMode = true;
    HydrationValidator.setDebugMode(true);
    console.log('Hydration debug mode enabled');
  }
  
  static disableDebugMode(): void {
    this.debugMode = false;
    HydrationValidator.setDebugMode(false);
    console.log('Hydration debug mode disabled');
  }
  
  static validateAndLog(
    serverContent: string,
    clientTemplate: ViewTemplate,
    data: any,
    elementName: string
  ): boolean {
    if (!this.debugMode) return true;
    
    console.group(`Hydration Validation: ${elementName}`);
    
    try {
      const result = HydrationValidator.validateContentMatch(
        serverContent,
        clientTemplate,
        data
      );
      
      this.logValidationResult(result);
      
      return result.isValid;
    } catch (error) {
      console.error('Validation failed:', error);
      return false;
    } finally {
      console.groupEnd();
    }
  }
  
  private static logValidationResult(result: HydrationValidationResult): void {
    if (result.isValid) {
      console.log('✅ Hydration validation passed');
    } else {
      console.log('❌ Hydration validation failed');
    }
    
    if (result.errors.length > 0) {
      console.group('Errors:');
      result.errors.forEach((error, index) => {
        console.error(`${index + 1}. ${error.type}: ${error.message}`);
        console.log('   Expected:', error.expected);
        console.log('   Actual:', error.actual);
        
        if (error.location.bindingIndex !== undefined) {
          console.log('   Binding Index:', error.location.bindingIndex);
        }
        
        if (error.location.elementPath) {
          console.log('   Element Path:', error.location.elementPath);
        }
      });
      console.groupEnd();
    }
    
    if (result.warnings.length > 0) {
      console.group('Warnings:');
      result.warnings.forEach((warning, index) => {
        console.warn(`${index + 1}. ${warning.type}: ${warning.message}`);
        
        if (warning.suggestion) {
          console.log('   Suggestion:', warning.suggestion);
        }
      });
      console.groupEnd();
    }
  }
  
  static checkElementForIssues(element: Element): void {
    if (!this.debugMode) return;
    
    const issues = HydrationValidator.checkForHydrationIssues(element);
    
    if (issues.length === 0) {
      console.log('✅ No hydration issues found for element:', element.tagName);
      return;
    }
    
    console.group(`Hydration Issues for ${element.tagName}:`);
    
    issues.forEach((issue, index) => {
      const icon = issue.severity === 'error' ? '❌' : 
                   issue.severity === 'warning' ? '⚠️' : 'ℹ️';
      
      console.log(`${icon} ${index + 1}. [${issue.category}] ${issue.description}`);
      
      if (issue.resolution) {
        console.log(`   💡 Resolution: ${issue.resolution}`);
      }
    });
    
    console.groupEnd();
  }
}

// Production hydration with error handling
class ProductionHydrationManager {
  private errorReporter?: (error: any) => void;
  
  constructor(errorReporter?: (error: any) => void) {
    this.errorReporter = errorReporter;
  }
  
  async safeHydration<T>(
    element: Element,
    template: HydratableElementViewTemplate<T>,
    data: T
  ): Promise<boolean> {
    try {
      // Validate before hydration in development
      if (process.env.NODE_ENV === 'development') {
        HydrationDebugger.enableDebugMode();
        HydrationDebugger.checkElementForIssues(element);
      }
      
      // Perform hydration
      const view = template.hydrate(
        element.firstChild!,
        element.lastChild!,
        element
      );
      
      view.bind(data);
      
      return true;
      
    } catch (error) {
      // Handle hydration errors
      if (error instanceof HydrationBindingError) {
        HydrationErrorHandler.handleHydrationError(error);
      } else {
        console.error('Unexpected hydration error:', error);
      }
      
      // Report error in production
      this.errorReporter?.(error);
      
      // Fallback to client-side rendering
      return this.fallbackToCSR(element, template, data);
    }
  }
  
  private async fallbackToCSR<T>(
    element: Element,
    template: HydratableElementViewTemplate<T>,
    data: T
  ): Promise<boolean> {
    try {
      console.log('Falling back to client-side rendering');
      
      // Clear server-rendered content
      element.innerHTML = '';
      
      // Create fresh client-side view
      const view = template.create(element);
      view.bind(data);
      view.appendTo(element);
      
      return true;
      
    } catch (error) {
      console.error('Client-side rendering fallback failed:', error);
      this.errorReporter?.(error);
      
      return false;
    }
  }
}

// Application-level hydration setup
class AppHydration {
  private productionManager = new ProductionHydrationManager(
    (error) => {
      // Report to error tracking service
      console.error('Hydration error reported:', error);
    }
  );
  
  async hydrateApplication(): Promise<void> {
    const hydratableElements = document.querySelectorAll('[data-hydratable]');
    
    const hydrationPromises = Array.from(hydratableElements).map(element => 
      this.hydrateElement(element)
    );
    
    const results = await Promise.allSettled(hydrationPromises);
    
    // Log overall hydration results
    const successful = results.filter(r => r.status === 'fulfilled').length;
    const failed = results.filter(r => r.status === 'rejected').length;
    
    console.log(`Hydration complete: ${successful} successful, ${failed} failed`);
    
    if (failed > 0) {
      console.warn('Some components failed to hydrate and fell back to CSR');
    }
  }
  
  private async hydrateElement(element: Element): Promise<void> {
    const componentType = element.getAttribute('data-component-type');
    const componentData = this.extractComponentData(element);
    
    // Get component template (would be from registry in real app)
    const template = this.getComponentTemplate(componentType!);
    
    if (template && isHydratable(template)) {
      const success = await this.productionManager.safeHydration(
        element,
        template,
        componentData
      );
      
      if (!success) {
        throw new Error(`Failed to hydrate ${componentType}`);
      }
    }
  }
  
  private extractComponentData(element: Element): any {
    // Extract component data from element attributes or content
    const dataScript = element.querySelector('script[type="application/json"]');
    
    if (dataScript) {
      return JSON.parse(dataScript.textContent || '{}');
    }
    
    return {};
  }
  
  private getComponentTemplate(componentType: string): HydratableElementViewTemplate<any> | null {
    // Component template registry
    const templates: Record<string, any> = {
      'user-card': createHydratableTemplate(),
      'product-listing': createHydratableTemplate(),
      // Add more component templates
    };
    
    return templates[componentType] || null;
  }
}

/**
 * Hydration stage type
 */
type HydrationStage = 
  | "initial"
  | "content-binding" 
  | "attribute-binding"
  | "event-binding"
  | "complete";

/**
 * Hydration marker type
 */
interface HydrationMarker {
  /** Marker type */
  type: 'content' | 'attribute' | 'element';
  
  /** Binding index */
  index: number;
  
  /** Target node ID */
  targetNodeId?: string;
  
  /** Attribute name for attribute markers */
  attributeName?: string;
}

/**
 * Hydration context interface
 */
interface HydrationContext {
  /** Current hydration stage */
  stage: HydrationStage;
  
  /** Available hydration markers */
  markers: HydrationMarker[];
  
  /** Root element being hydrated */
  rootElement: Element;
  
  /** Component data */
  data: any;
}