interface EphemeralUISystem {
  contextAnalyzer: ContextAnalyzer;
  intentClassifier: IntentClassifier;
  componentSynthesizer: ComponentSynthesizer;
  renderingEngine: DynamicRenderer;
}

class EphemeralUIEngine {
  constructor(
    private llm: LanguageModel,
    private componentLibrary: ComponentLibrary,
    private designSystem: DesignSystem
  ) {}

  async synthesizeInterface(
    userIntent: string,
    contextState: ApplicationContext
  ): Promise<EphemeralInterface> {
    // Multi-modal intent analysis
    const intentVector = await this.analyzeIntent(userIntent, contextState);
    
    // Component composition via LLM reasoning
    const interfaceSpec = await this.llm.complete({
      prompt: this.buildInterfacePrompt(intentVector, contextState),
      schema: InterfaceSpecificationSchema,
      temperature: 0.1 // Low temperature for consistent UI generation
    });
    
    // Dynamic component instantiation
    const components = await this.instantiateComponents(interfaceSpec);
    
    return new EphemeralInterface({
      components,
      lifecycle: interfaceSpec.lifecycle,
      interactionHandlers: this.bindEventHandlers(interfaceSpec.interactions)
    });
  }

  private buildInterfacePrompt(
    intent: IntentVector,
    context: ApplicationContext
  ): string {
    return `
    Generate an optimal interface specification for:
    
    Intent: ${intent.primary_action} (confidence: ${intent.confidence})
    Context: ${JSON.stringify(context.relevant_state)}
    Available Components: ${this.componentLibrary.getAvailableComponents()}
    Design Constraints: ${this.designSystem.getConstraints()}
    
    Requirements:
    - Minimize cognitive load for task completion
    - Optimize for single-task efficiency  
    - Ensure accessibility compliance
    - Consider mobile-responsive layouts
    
    Return a complete interface specification with component hierarchy,
    interaction patterns, and lifecycle management.
    `;
  }
}

// Traditional stateful component
class TraditionalComponent extends React.Component {
  state = { expanded: false, selectedItems: [], filters: {} };
  // Persistent state creates interface rigidity
}

// Ephemeral stateless component
interface EphemeralComponentProps {
  intentContext: IntentContext;
  renderDirectives: RenderDirectives;
  onStateChange: (mutation: StateMutation) => void;
}

const EphemeralComponent: React.FC<EphemeralComponentProps> = ({
  intentContext,
  renderDirectives,
  onStateChange
}) => {
  // All state derived from context
  const derivedState = useMemo(() => 
    deriveStateFromIntent(intentContext), [intentContext]
  );
  
  // Interactions generate state mutations, not local state updates
  const handleInteraction = useCallback((action: UserAction) => {
    const mutation = generateStateMutation(action, intentContext);
    onStateChange(mutation);
  }, [intentContext, onStateChange]);
  
  return renderDirectives.render(derivedState, handleInteraction);
};

class ComponentSynthesizer {
  constructor(
    private designLLM: LanguageModel,
    private componentRegistry: ComponentRegistry
  ) {}

  async synthesizeOptimalLayout(
    taskRequirements: TaskRequirements,
    userPreferences: UserPreferences,
    deviceConstraints: DeviceConstraints
  ): Promise<ComponentComposition> {
    
    // AI-driven layout optimization
    const layoutStrategy = await this.designLLM.complete({
      prompt: `
      Optimize interface layout for:
      Task: ${taskRequirements.primaryObjective}
      User Experience Level: ${userPreferences.expertiseLevel}
      Device: ${deviceConstraints.formFactor}
      Screen: ${deviceConstraints.dimensions}
      
      Principles:
      - Minimize cognitive switching costs
      - Optimize information hierarchy
      - Reduce interaction friction
      - Maximize task completion efficiency
      
      Select optimal components and arrangement from available library.
      `,
      schema: LayoutOptimizationSchema
    });

    // Component instantiation with dynamic properties
    const components = await Promise.all(
      layoutStrategy.components.map(async (spec) => {
        const Component = this.componentRegistry.get(spec.type);
        
        // AI-generated component properties
        const dynamicProps = await this.generateComponentProps(
          spec, taskRequirements, userPreferences
        );
        
        return {
          Component,
          props: { ...spec.baseProps, ...dynamicProps },
          position: spec.layoutPosition,
          constraints: spec.responsiveConstraints
        };
      })
    );

    return new ComponentComposition(components, layoutStrategy.interactionFlow);
  }

  private async generateComponentProps(
    spec: ComponentSpec,
    requirements: TaskRequirements,
    preferences: UserPreferences
  ): Promise<DynamicProps> {
    // Context-aware property generation
    return this.designLLM.complete({
      prompt: `
      Generate optimal properties for ${spec.type} component:
      
      Task Context: ${requirements.context}
      User Preferences: ${preferences.interfaceStyle}
      Component Purpose: ${spec.purpose}
      
      Optimize for usability and task efficiency.
      `,
      schema: ComponentPropsSchema
    });
  }
}

class IntentDrivenRenderer {
  private intentHistory: IntentTracker;
  private predictionEngine: InterfacePredictionEngine;
  
  constructor() {
    this.intentHistory = new IntentTracker(50); // 50-interaction window
    this.predictionEngine = new InterfacePredictionEngine();
  }

  async renderAdaptiveInterface(
    currentIntent: UserIntent,
    globalContext: ApplicationContext
  ): Promise<AdaptiveInterface> {
    
    // Track intent progression
    this.intentHistory.record(currentIntent);
    
    // Predict likely next actions
    const intentPredictions = await this.predictionEngine.predictNextIntents(
      this.intentHistory.getSequence(),
      globalContext
    );
    
    // Pre-generate interface components for predicted intents
    const preloadedComponents = await this.preloadLikelyComponents(
      intentPredictions
    );
    
    // Render current interface with predictive optimization
    const currentInterface = await this.synthesizeInterface(
      currentIntent,
      globalContext
    );
    
    return new AdaptiveInterface({
      primary: currentInterface,
      preloaded: preloadedComponents,
      transitionStrategies: this.generateTransitionStrategies(intentPredictions)
    });
  }

  private async preloadLikelyComponents(
    predictions: IntentPrediction[]
  ): Promise<PreloadedComponent[]> {
    return Promise.all(
      predictions
        .filter(p => p.confidence > 0.7) // High-confidence predictions only
        .map(async prediction => {
          const component = await this.synthesizeInterface(
            prediction.intent,
            prediction.projectedContext
          );
          
          return {
            component,
            probability: prediction.confidence,
            transitionTriggers: prediction.triggerConditions
          };
        })
    );
  }
}

class ContextualInteractionEngine {
  async generateInteractionPattern(
    componentType: ComponentType,
    userProfile: UserProfile,
    taskContext: TaskContext
  ): Promise<InteractionPattern> {
    
    const interactionSpec = await this.llm.complete({
      prompt: `
      Design optimal interaction pattern for ${componentType}:
      
      User Expertise: ${userProfile.domainExpertise}
      Task Urgency: ${taskContext.urgencyLevel}
      Environment: ${taskContext.environment} 
      Device Capabilities: ${taskContext.inputMethods}
      
      Optimize for:
      - Minimal error rate
      - Maximum efficiency
      - Reduced cognitive load
      - Accessibility compliance
      
      Generate specific interaction behaviors, animations, and feedback patterns.
      `,
      schema: InteractionPatternSchema
    });

    return new InteractionPattern({
      gestureRecognition: interactionSpec.gestures,
      feedbackTimings: interactionSpec.feedback,
      errorPrevention: interactionSpec.safeguards,
      adaptiveBehaviors: interactionSpec.adaptations
    });
  }
}

// Example: Context-adaptive form interaction
class AdaptiveFormComponent {
  renderField(fieldSpec: FieldSpec, context: InteractionContext) {
    const adaptations = this.determineAdaptations(fieldSpec, context);
    
    return {
      inputType: adaptations.optimalInputMethod,
      validationStrategy: adaptations.validationApproach,
      assistanceLevel: adaptations.guidanceIntensity,
      errorRecovery: adaptations.errorHandlingPattern
    };
  }
  
  private determineAdaptations(
    field: FieldSpec, 
    context: InteractionContext
  ): FieldAdaptations {
    // AI-driven adaptation logic
    if (context.userExpertise.high && context.taskUrgency.high) {
      return {
        optimalInputMethod: 'keyboard-shortcuts',
        validationApproach: 'deferred',
        guidanceIntensity: 'minimal',
        errorHandlingPattern: 'inline-correction'
      };
    }
    
    if (context.userExpertise.low && context.environmentNoise.high) {
      return {
        optimalInputMethod: 'voice-with-confirmation',
        validationApproach: 'real-time',
        guidanceIntensity: 'verbose',
        errorHandlingPattern: 'modal-recovery'
      };
    }
    
    // ... additional adaptation strategies
  }
}

class EphemeralRenderingEngine {
  private componentPool: ComponentPool;
  private garbageCollector: InterfaceGarbageCollector;
  
  constructor() {
    this.componentPool = new ComponentPool({
      maxPoolSize: 1000,
      componentTypes: ['Button', 'Input', 'Modal', 'List', 'Chart'],
      preallocationStrategy: 'predictive'
    });
    
    this.garbageCollector = new InterfaceGarbageCollector({
      collectionTrigger: 'memory-pressure',
      retentionPolicy: 'intent-relevance'
    });
  }

  async renderEphemeralInterface(
    interfaceSpec: InterfaceSpecification
  ): Promise<RenderedInterface> {
    
    // Acquire components from pool
    const pooledComponents = await this.componentPool.acquire(
      interfaceSpec.requiredComponents
    );
    
    // Configure components for specific intent
    const configuredComponents = await this.configureComponents(
      pooledComponents,
      interfaceSpec.configuration
    );
    
    // Render with lifecycle management
    const renderedInterface = new RenderedInterface({
      components: configuredComponents,
      lifecycle: new EphemeralLifecycle({
        onUnmount: () => this.componentPool.release(configuredComponents),
        onIntentChange: (newIntent) => this.handleIntentTransition(newIntent),
        garbageCollection: this.garbageCollector.schedule
      })
    });
    
    return renderedInterface;
  }

  private async handleIntentTransition(
    newIntent: UserIntent
  ): Promise<TransitionResult> {
    // Determine optimal transition strategy
    const transitionStrategy = await this.analyzeTransitionPath(
      this.currentInterface,
      newIntent
    );
    
    switch (transitionStrategy.type) {
      case 'component-reuse':
        return this.reuseComponents(transitionStrategy.reusableComponents);
      
      case 'partial-regeneration':
        return this.partiallyRegenerateInterface(transitionStrategy.updateRegions);
      
      case 'complete-regeneration':
        return this.completelyRegenerateInterface(newIntent);
    }
  }
}

class EphemeralUIOptimizer {
  private precomputationEngine: InterfacePrecomputationEngine;
  private cacheManager: SemanticCacheManager;
  
  async optimizeInterfaceGeneration(
    intentSequence: UserIntent[],
    systemResources: SystemResources
  ): Promise<OptimizationStrategy> {
    
    // Semantic clustering of similar intents
    const intentClusters = await this.clusterSimilarIntents(intentSequence);
    
    // Pre-generate interface templates for clusters
    const templateCache = await this.precomputationEngine.generateTemplates(
      intentClusters,
      systemResources.computeBudget
    );
    
    // Implement intelligent caching strategy
    const cacheStrategy = this.cacheManager.optimizeCacheStrategy({
      intentPatterns: intentClusters,
      memoryConstraints: systemResources.memoryLimit,
      latencyRequirements: systemResources.latencyTarget
    });
    
    return new OptimizationStrategy({
      templatePrecomputation: templateCache,
      cacheManagement: cacheStrategy,
      renderingPipeline: this.optimizeRenderingPipeline(systemResources)
    });
  }

  private async clusterSimilarIntents(
    intents: UserIntent[]
  ): Promise<IntentCluster[]> {
    // Semantic embedding of user intents
    const intentEmbeddings = await Promise.all(
      intents.map(intent => this.embedIntent(intent))
    );
    
    // Clustering similar intents for template reuse
    return this.performSemanticClustering(intentEmbeddings, {
      clusteringAlgorithm: 'hierarchical',
      similarityThreshold: 0.85,
      maxClusters: 20
    });
  }
}

class CrossPlatformEphemeralRenderer {
  async renderUniversalInterface(
    intent: UserIntent,
    platformContext: PlatformContext
  ): Promise<PlatformAdaptedInterface> {
    
    // Platform-specific optimization
    const platformOptimizations = await this.analyzePlatformConstraints(
      platformContext
    );
    
    // Generate adaptive interface specification
    const adaptiveSpec = await this.llm.complete({
      prompt: `
      Adapt interface for cross-platform deployment:
      
      Intent: ${intent.description}
      Target Platforms: ${platformContext.targetPlatforms}
      Shared Components: ${platformContext.sharedComponentLibrary}
      Platform-Specific Constraints: ${JSON.stringify(platformOptimizations)}
      
      Generate interface that optimizes for each platform while maintaining
      functional consistency and brand coherence.
      `,
      schema: CrossPlatformInterfaceSchema
    });
    
    // Platform-specific rendering
    const platformRenderers = {
      'web': this.webRenderer,
      'mobile': this.mobileRenderer,
      'voice': this.voiceRenderer,
      'ar/vr': this.immersiveRenderer
    };
    
    const renderedInterfaces = await Promise.all(
      platformContext.targetPlatforms.map(async platform => ({
        platform,
        interface: await platformRenderers[platform].render(adaptiveSpec)
      }))
    );
    
    return new PlatformAdaptedInterface(renderedInterfaces);
  }
}