Accessibility Innovation

class IntelligentSceneDescriptor {
  constructor(
    private visionAPI: ComputerVisionAPI,
    private nlpProcessor: NaturalLanguageProcessor,
    private contextEngine: ContextualAwarenessEngine
  ) {}

  async describeScene(
    image: ImageData, 
    userContext: UserContext,
    previousContext?: ConversationContext
  ): Promise<RichDescription> {
    
    // Multi-layer analysis
    const basicDetection = await this.visionAPI.detectObjects(image);
    const spatialRelationships = await this.visionAPI.analyzeSpatialLayout(image);
    const textContent = await this.visionAPI.extractText(image);
    const facialAnalysis = await this.visionAPI.analyzeFaces(image);
    const emotionalContext = await this.visionAPI.analyzeEmotion(image);

    // Context-aware description generation
    const relevantDetails = this.filterByUserIntent(
      { basicDetection, spatialRelationships, textContent, facialAnalysis },
      userContext.currentTask
    );

    // Natural language generation
    const description = await this.nlpProcessor.generateDescription({
      visualElements: relevantDetails,
      userPreferences: userContext.descriptionStyle, // Brief, detailed, or technical
      previousContext: previousContext,
      priorityInformation: this.determinePriority(userContext.currentTask)
    });

    return {
      primaryDescription: description.main,
      detailLayers: {
        spatial: description.spatial, // "The button is in the top right corner"
        textual: description.textual, // "The sign reads 'Emergency Exit'"
        social: description.social, // "Three people are sitting at a table, appearing to have a serious conversation"
        navigational: description.navigational // "There's a doorway 5 steps ahead on your left"
      },
      interactiveElements: this.identifyInteractableElements(basicDetection),
      suggestedActions: this.generateActionSuggestions(userContext, relevantDetails)
    };
  }

  private filterByUserIntent(visualData: VisualAnalysis, currentTask: UserTask): FilteredData {
    if (currentTask.type === 'navigation') {
      return {
        obstacles: visualData.spatialRelationships.obstacles,
        pathways: visualData.spatialRelationships.walkableAreas,
        landmarks: visualData.basicDetection.navigationLandmarks,
        signage: visualData.textContent.directionalSigns
      };
    }

    if (currentTask.type === 'social_interaction') {
      return {
        people: visualData.facialAnalysis.detectedPeople,
        emotions: visualData.emotionalContext.groupDynamics,
        socialCues: visualData.facialAnalysis.bodyLanguage,
        environmentalContext: visualData.spatialRelationships.socialSpaces
      };
    }

    if (currentTask.type === 'document_reading') {
      return {
        textStructure: visualData.textContent.documentStructure,
        readingOrder: visualData.textContent.readingFlow,
        importantElements: visualData.textContent.headings,
        graphicalElements: visualData.basicDetection.charts
      };
    }

    return visualData; // Return everything if task is unclear
  }
}

class HapticVisionSystem {
  constructor(
    private hapticDevice: HapticDevice,
    private spatialProcessor: SpatialMappingEngine
  ) {}

  async convertVisualToHaptic(
    visualScene: VisualScene,
    user: UserProfile
  ): Promise<HapticExperience> {
    
    // Create spatial haptic map
    const hapticMap = await this.spatialProcessor.createHapticMap(visualScene, {
      resolution: user.hapticSensitivity,
      bodyMapping: user.preferredHapticZones,
      temporalSensitivity: user.temporalProcessingSpeed
    });

    // Multi-layer haptic feedback
    return {
      structural: this.createStructuralFeedback(hapticMap),
      textural: this.createTexturalFeedback(visualScene.surfaces),
      directional: this.createDirectionalGuidance(visualScene.navigationInfo),
      interactive: this.createInteractionFeedback(visualScene.interactableElements),
      temporal: this.createTemporalPatterns(visualScene.movingElements)
    };
  }

  private createStructuralFeedback(hapticMap: HapticMap): StructuralHaptics {
    return {
      edges: hapticMap.edges.map(edge => ({
        position: edge.coordinates,
        intensity: this.calculateEdgeIntensity(edge.prominence),
        pattern: 'sharp_pulse', // Distinct from surfaces
        duration: 100 // milliseconds
      })),
      surfaces: hapticMap.surfaces.map(surface => ({
        area: surface.boundingBox,
        texture: this.mapVisualTextureToHaptic(surface.visualTexture),
        pattern: 'sustained_vibration',
        intensity: this.calculateSurfaceIntensity(surface.importance)
      })),
      depth: hapticMap.depthLayers.map(layer => ({
        distance: layer.distanceFromUser,
        intensity: this.calculateDepthIntensity(layer.distance),
        pattern: 'depth_gradient', // Stronger for closer objects
        spatialMapping: layer.spatialCoordinates
      }))
    };
  }

  // Advanced: Predictive haptic feedback
  async providePredictiveHaptics(
    currentScene: VisualScene,
    userMovement: MovementData,
    destination: NavigationGoal
  ): Promise<PredictiveHaptics> {
    
    const predictedPath = await this.spatialProcessor.predictOptimalPath(
      currentScene, userMovement, destination
    );

    const upcomingObstacles = await this.spatialProcessor.identifyFutureObstacles(
      predictedPath, userMovement.velocity
    );

    return {
      pathGuidance: this.createPathGuidanceHaptics(predictedPath),
      obstacleWarnings: this.createObstacleWarnings(upcomingObstacles),
      destinationApproach: this.createDestinationSignaling(destination, predictedPath),
      correctionSuggestions: this.createNavigationCorrections(predictedPath, currentScene)
    };
  }
}

class GazeInteractionEngine {
  constructor(
    private gazeTracker: EyeTrackingAPI,
    private intentPredictor: IntentPredictionEngine,
    private adaptiveUI: AdaptiveUIEngine
  ) {}

  async enableGazeInteraction(user: UserProfile): Promise<GazeInteractionSession> {
    // Calibrate to user's unique gaze patterns
    const calibration = await this.gazeTracker.calibrateForUser(user);
    
    return {
      dwellTimeSettings: this.calculateOptimalDwellTime(user.motorCapabilities),
      intentionPredictor: this.setupIntentPrediction(user.behaviorPattern),
      adaptiveInterface: this.createGazeOptimizedUI(user.preferences),
      fatiguePrevention: this.setupFatigueMonitoring(user.enduranceProfile)
    };
  }

  async processGazeInput(
    gazeData: GazePoint[],
    currentContext: InteractionContext
  ): Promise<InteractionCommand> {
    
    // Analyze gaze pattern for intent
    const gazePattern = this.analyzeGazePattern(gazeData);
    const predictedIntent = await this.intentPredictor.predict(gazePattern, currentContext);

    // Handle different types of gaze interactions
    if (gazePattern.type === 'focused_dwell') {
      return this.processDwellInteraction(gazePattern, predictedIntent);
    }

    if (gazePattern.type === 'saccadic_selection') {
      return this.processSaccadicSelection(gazePattern, predictedIntent);
    }

    if (gazePattern.type === 'smooth_pursuit') {
      return this.processSmoothPursuitGesture(gazePattern, predictedIntent);
    }

    if (gazePattern.type === 'blink_pattern') {
      return this.processBlinkCommand(gazePattern);
    }

    return this.processAmbiguousGaze(gazePattern, currentContext);
  }

  private processDwellInteraction(
    pattern: GazePattern, 
    intent: PredictedIntent
  ): InteractionCommand {
    return {
      action: intent.mostLikelyAction,
      confidence: intent.confidence,
      parameters: {
        dwellDuration: pattern.dwellTime,
        gazePrecision: pattern.precision,
        selectionFeedback: 'progressive_highlight', // Visual feedback during dwell
      },
      fallbackActions: intent.alternativeActions, // If primary action fails
      undoAvailable: true // Critical for motor accessibility
    };
  }

  // Advanced: Predictive gaze assistance
  async enablePredictiveGazeAssistance(
    user: UserProfile
  ): Promise<PredictiveGazeSystem> {
    return {
      targetMagnification: this.setupAdaptiveTargetSizing(user.gazePrecision),
      intentPrediction: this.setupMultiModalIntentPrediction(user),
      contextualAssistance: this.setupContextualGazeHelp(user.cognitiveProfile),
      fatigueAdaptation: this.setupDynamicAdaptation(user.fatiguePatterns)
    };
  }

  private setupAdaptiveTargetSizing(gazePrecision: GazePrecisionProfile): TargetAdapter {
    return {
      dynamicSizing: (target: UIElement) => {
        const baseSize = target.originalSize;
        const enlargementFactor = this.calculateEnlargementNeed(
          gazePrecision.averageError, 
          gazePrecision.tremor,
          target.importance
        );
        return {
          width: baseSize.width * enlargementFactor,
          height: baseSize.height * enlargementFactor,
          activationArea: baseSize.area * (enlargementFactor * 1.5) // Larger activation zone
        };
      },
      
      contextualGrouping: (elements: UIElement[]) => {
        // Group related elements to reduce gaze travel distance
        return this.createGazeOptimizedLayout(elements, gazePrecision.averageGazeJumpDistance);
      }
    };
  }
}

class MultimodalAccessibilityController {
  constructor(
    private speechRecognizer: SpeechRecognitionEngine,
    private gestureDetector: GestureDetectionEngine,
    private fusionEngine: MultiModalFusionEngine
  ) {}

  async enableMultimodalControl(
    user: UserProfile,
    capabilities: AccessibilityCapabilities
  ): Promise<MultimodalSession> {
    
    // Adapt to user's specific capabilities
    const modalityConfig = this.optimizeModalitiesForUser(capabilities);

    return {
      primaryModality: modalityConfig.primary,
      supportingModalities: modalityConfig.supporting,
      fallbackSystems: modalityConfig.fallbacks,
      fusionStrategy: this.setupFusionStrategy(capabilities),
      adaptationEngine: this.setupRealTimeAdaptation(user)
    };
  }

  async processCombinedInput(
    voiceInput?: VoiceCommand,
    gestureInput?: GestureCommand,
    gazeInput?: GazeCommand,
    context: InteractionContext
  ): Promise<UnifiedCommand> {
    
    // Intelligent fusion of multiple input modalities
    const inputStreams = this.normalizeInputStreams({
      voice: voiceInput,
      gesture: gestureInput,
      gaze: gazeInput
    });

    const fusedIntent = await this.fusionEngine.combineIntents(
      inputStreams,
      context,
      this.getConfidenceWeights(user.reliabilityProfiles)
    );

    // Handle complementary commands
    if (this.areInputsComplementary(inputStreams)) {
      return this.processComplementaryCommand(fusedIntent);
    }

    // Handle conflicting commands
    if (this.areInputsConflicting(inputStreams)) {
      return this.resolveConflict(inputStreams, context);
    }

    // Handle reinforcing commands (same intent from multiple modalities)
    if (this.areInputsReinforcing(inputStreams)) {
      return this.processReinforcedCommand(fusedIntent);
    }

    return this.processSingleModalityCommand(fusedIntent);
  }

  private processComplementaryCommand(intent: FusedIntent): UnifiedCommand {
    // Example: "Open settings" (voice) + pointing gesture (gesture) = open settings at pointed location
    // Example: "Scroll down" (voice) + eye gaze on specific area (gaze) = scroll that specific area
    
    return {
      primaryAction: intent.primaryAction,
      targetRefinement: intent.spatialModifiers, // From gesture/gaze
      speedModifiers: intent.velocityModifiers, // From voice tone/gesture speed
      precisionEnhancement: intent.precisionBoosts, // From multi-modal confirmation
      confidenceScore: intent.combinedConfidence
    };
  }

  // Adaptive error correction
  async setupAdaptiveErrorCorrection(
    user: UserProfile
  ): Promise<ErrorCorrectionSystem> {
    
    return {
      patternLearning: this.learnUserErrorPatterns(user.historicalData),
      predictiveCorrection: this.setupPredictiveCorrection(user.commonMistakes),
      contextualDisambiguation: this.setupContextualDisambiguation(user.domain),
      undoSystemOptimization: this.optimizeUndoForUser(user.motorCapabilities)
    };
  }
}

class CognitiveAccessibilityEngine {
  constructor(
    private cognitiveAssessment: CognitiveAssessmentAPI,
    private adaptiveUI: AdaptiveUserInterface,
    private memoryAssistance: MemoryAssistanceSystem
  ) {}

  async createCognitivelyAdaptiveExperience(
    user: UserProfile
  ): Promise<CognitiveAdaptiveSession> {
    
    const cognitiveProfile = await this.cognitiveAssessment.assessUser(user);
    
    return {
      memorySupport: this.setupMemoryAssistance(cognitiveProfile),
      attentionGuidance: this.setupAttentionGuidance(cognitiveProfile),
      processingSupport: this.setupProcessingSupport(cognitiveProfile),
      errorPrevention: this.setupErrorPrevention(cognitiveProfile),
      progressTracking: this.setupProgressSupport(cognitiveProfile)
    };
  }

  private setupMemoryAssistance(profile: CognitiveProfile): MemoryAssistanceSystem {
    return {
      // Working memory support
      informationChunking: {
        maxSimultaneousElements: profile.workingMemoryCapacity,
        chunkingStrategy: profile.preferredChunkingMethod,
        rehearsalSupport: profile.requiresRehearsal
      },

      // Long-term memory support
      contextualReminders: {
        personalContext: this.createPersonalContextReminders(profile),
        proceduralSupport: this.createProceduralMemoryAids(profile),
        episodicSupport: this.createEpisodicMemoryHelpers(profile)
      },

      // Prospective memory (remembering to do things)
      intentionSupport: {
        taskReminders: this.setupIntelligentReminders(profile),
        contextualCues: this.setupContextualTriggers(profile),
        habitFormation: this.setupHabitSupport(profile)
      }
    };
  }

  private setupAttentionGuidance(profile: CognitiveProfile): AttentionGuidanceSystem {
    return {
      // Selective attention support
      distractionReduction: {
        backgroundNoise: profile.distractionSensitivity.auditory,
        visualClutter: profile.distractionSensitivity.visual,
        motionSensitivity: profile.distractionSensitivity.motion
      },

      // Sustained attention support
      attentionMaintenance: {
        breakReminders: this.calculateOptimalBreakIntervals(profile),
        engagementMonitoring: this.setupEngagementTracking(profile),
        motivationSupport: this.setupMotivationalElements(profile)
      },

      // Divided attention support
      taskManagement: {
        sequentialTasking: profile.preferredTaskOrganization === 'sequential',
        priorityHighlighting: this.setupPriorityVisualization(profile),
        cognitiveLoadIndicators: this.setupLoadIndicators(profile)
      }
    };
  }

  // Real-time cognitive adaptation
  async adaptToCognitiveState(
    currentState: CognitiveState,
    userInteraction: InteractionData
  ): Promise<CognitiveAdaptation> {
    
    const cognitiveLoad = this.assessCurrentCognitiveLoad(currentState, userInteraction);
    const fatigueLevel = this.assessCognitiveFatigue(currentState);
    const comprehensionLevel = this.assessComprehension(userInteraction);

    if (cognitiveLoad > 0.8) {
      return this.implementCognitiveLoadReduction();
    }

    if (fatigueLevel > 0.7) {
      return this.implementFatigueCompensation();
    }

    if (comprehensionLevel < 0.6) {
      return this.implementComprehensionSupport();
    }

    return this.maintainCurrentAdaptation();
  }

  private implementCognitiveLoadReduction(): CognitiveAdaptation {
    return {
      interfaceSimplification: {
        hideNonEssentialElements: true,
        increaseWhitespace: true,
        reduceColorComplexity: true,
        simplifyLanguage: true
      },
      interactionSimplification: {
        reduceChoices: true,
        provideClearNextSteps: true,
        eliminateTimeoutPressure: true,
        offerProgressSummary: true
      },
      supportEnhancement: {
        increaseHelperText: true,
        provideVisualCues: true,
        offerAudioSupport: true,
        enableSlowerPacing: true
      }
    };
  }
}

class NeuroinclusiveDesignEngine {
  
  async createNeuroinclusiveInterface(
    user: UserProfile,
    neurodivergenceType: NeurodivergenceProfile[]
  ): Promise<NeuroinclusiveInterface> {
    
    const designAdaptations = neurodivergenceType.map(type => {
      switch(type.condition) {
        case 'autism':
          return this.createAutismFriendlyAdaptations(type.specificNeeds);
        case 'adhd':
          return this.createADHDFriendlyAdaptations(type.specificNeeds);
        case 'dyslexia':
          return this.createDyslexiaFriendlyAdaptations(type.specificNeeds);
        case 'anxiety':
          return this.createAnxietyFriendlyAdaptations(type.specificNeeds);
        default:
          return this.createGeneralNeurodivergentAdaptations(type);
      }
    });

    return this.fusionEngine.combineAdaptations(designAdaptations);
  }

  private createAutismFriendlyAdaptations(needs: AutismSpecificNeeds): InterfaceAdaptation {
    return {
      sensoryConsiderations: {
        reducedVisualStimuli: needs.visualSensitivity,
        consistentAudioCues: needs.auditoryPreferences,
        minimizedFlashing: true,
        calmColorPalettes: needs.colorPreferences
      },
      
      predictabilityFeatures: {
        consistentNavigation: true,
        clearRoutines: this.establishUIRoutines(),
        changeNotifications: this.setupChangeAnnouncements(),
        familiarPatterns: this.maintainFamiliarElements()
      },

      communicationSupport: {
        literalLanguage: needs.communicationStyle === 'literal',
        visualSchedules: needs.benefitsFromVisualSchedules,
        socialCueExplanations: needs.requiresSocialGuidance,
        emotionRegulationTools: this.provideEmotionSupport()
      },

      autonomyFeatures: {
        selfDirectedPacing: true,
        interestBasedCustomization: needs.specialInterests,
        sensoryBreakOptions: this.provideSensoryBreaks(),
        routinePersonalization: this.enableRoutineCustomization()
      }
    };
  }

  private createADHDFriendlyAdaptations(needs: ADHDSpecificNeeds): InterfaceAdaptation {
    return {
      attentionSupport: {
        distractionReduction: needs.distractibilityLevel,
        focusEnhancement: this.setupFocusTools(),
        taskBreakdown: this.createTaskChunking(),
        priorityVisualization: this.setupPriorityIndicators()
      },

      hyperactivityAccommodation: {
        fidgetingSupport: this.provideFidgetingOutlets(),
        movementIntegration: needs.benefitsFromMovement,
        energyChanneling: this.createEnergyChannellingFeatures(),
        restlessnessRelief: this.provideRestlessnessSupport()
      },

      impulsivityManagement: {
        pauseBeforeAction: this.setupPausePrompts(),
        consequenceVisualization: needs.benefitsFromConsequencePreview,
        undoSupport: this.enhanceUndoCapabilities(),
        reflectionPrompts: this.createReflectionMoments()
      },

      executiveFunctionSupport: {
        planningAssistance: this.setupPlanningTools(),
        timeManagement: this.createTimeAwarenessFeatures(),
        organizationSupport: this.provideOrganizationalStructure(),
        memoryAids: this.setupMemorySupport()
      }
    };
  }
}

class GlobalAccessibilityPlatform {
  
  async deployAccessibleSolutionGlobally(
    region: string,
    disabilityPrevalence: DisabilityStatistics,
    technicalInfrastructure: TechnicalCapabilities
  ): Promise<RegionalAccessibilityStrategy> {
    
    // Assess regional accessibility landscape
    const accessibilityGaps = await this.assessRegionalGaps(region);
    const culturalConsiderations = await this.assessCulturalAccessibilityNorms(region);
    const technicalConstraints = await this.assessTechnicalConstraints(technicalInfrastructure);

    // Develop deployment strategy
    return {
      priorityFeatures: this.prioritizeFeaturesByImpact(accessibilityGaps, disabilityPrevalence),
      culturalAdaptations: this.adaptToCulturalContext(culturalConsiderations),
      technicalOptimizations: this.optimizeForInfrastructure(technicalConstraints),
      partnershipStrategy: this.developPartnershipApproach(region),
      impactMeasurement: this.setupImpactTracking(region, disabilityPrevalence)
    };
  }

  private prioritizeFeaturesByImpact(
    gaps: AccessibilityGap[],
    prevalence: DisabilityStatistics
  ): PriorityFeatureList {
    
    const impactScores = gaps.map(gap => ({
      feature: gap.missingFeature,
      impactScore: gap.populationAffected * prevalence[gap.disabilityType] * gap.severityScore,
      implementationCost: gap.estimatedDevelopmentCost,
      roi: gap.impactScore / gap.implementationCost
    }));

    return impactScores
      .sort((a, b) => b.roi - a.roi)
      .slice(0, 10); // Top 10 highest impact features
  }

  // Partnership with disability organizations
  async establishAccessibilityPartnerships(region: string): Promise<PartnershipNetwork> {
    const disabilityOrganizations = await this.identifyRegionalDisabilityOrgs(region);
    const technicalPartners = await this.identifyTechnicalPartners(region);
    const governmentAgencies = await this.identifyGovernmentAccessibilityAgencies(region);

    return {
      disabilityRightsOrgs: disabilityOrganizations.map(org => ({
        name: org.name,
        expertise: org.specializations,
        userTestingCapabilities: org.communitySize,
        advocationCapabilities: org.policyInfluence,
        partnershipType: 'user_testing_and_advocacy'
      })),

      technicalPartners: technicalPartners.map(partner => ({
        name: partner.name,
        capabilities: partner.accessibilityTechExpertise,
        localKnowledge: partner.regionalExperience,
        partnershipType: 'technical_implementation'
      })),

      governmentPartners: governmentAgencies.map(agency => ({
        name: agency.name,
        policyInfluence: agency.policyMakingCapacity,
        fundingPotential: agency.budgetarySupport,
        partnershipType: 'policy_and_funding'
      }))
    };
  }
}

class ALSAdaptiveInterface {
  async adaptToProgressiveCondition(
    user: ALSUserProfile,
    currentCapabilities: MotorCapabilities
  ): Promise<ProgressiveAdaptation> {
    
    return {
      speechAdaptation: this.adaptSpeechRecognition(user.speechChanges),
      motorFallback: this.setupAlternativeInputs(currentCapabilities),
      predictiveAssistance: this.enhancePredictiveCapabilities(user.commonCommands),
      emergencyAccess: this.setupEmergencyControls(user.caregiverContacts)
    };
  }
}