Compliance Made Simple: ADA Requirements for Mobile Check Deposit Features

const accessibilityBarriers = {
  visual: [
    "Camera interface without screen reader support",
    "Visual-only feedback for image quality",
    "Insufficient color contrast in UI elements",
    "Missing alternative text for images and icons",
    "No audio cues for capture guidance"
  ],
  
  motor: [
    "Small touch targets for camera controls",
    "Precise positioning requirements",
    "Time-limited capture windows",
    "Complex gesture requirements",
    "No voice control alternatives"
  ],
  
  cognitive: [
    "Complex multi-step processes",
    "Unclear error messages",
    "No simplified interaction modes",
    "Overwhelming interface options",
    "Lack of progress indicators"
  ]
};

class AccessibleCheckCapture {
    
    constructor() {
        this.setupAccessibility();
        this.initializeAudioFeedback();
    }
    
    setupAccessibility() {
        // ARIA labels and roles
        const cameraContainer = document.getElementById('camera-container');
        cameraContainer.setAttribute('role', 'application');
        cameraContainer.setAttribute('aria-label', 'Check capture camera');
        
        // Keyboard navigation support
        this.setupKeyboardControls();
        
        // Focus management
        this.manageFocus();
    }
    
    setupKeyboardControls() {
        document.addEventListener('keydown', (event) => {
            switch(event.code) {
                case 'Space':
                case 'Enter':
                    if (event.target.id === 'capture-button') {
                        this.captureImage();
                        event.preventDefault();
                    }
                    break;
                    
                case 'Escape':
                    this.exitCameraMode();
                    break;
            }
        });
    }
    
    provideAccessibleFeedback(message) {
        // Update screen reader announcement
        const liveRegion = document.getElementById('sr-live-region');
        liveRegion.textContent = message;
        
        // Optional: Audio announcement
        if (this.audioEnabled) {
            this.speakMessage(message);
        }
    }
    
    speakMessage(message) {
        if ('speechSynthesis' in window) {
            const utterance = new SpeechSynthesisUtterance(message);
            utterance.rate = 0.8;
            utterance.pitch = 1;
            speechSynthesis.speak(utterance);
        }
    }
}

class AlternativeInputSupport {
    
    enableVoiceCommands() {
        if ('webkitSpeechRecognition' in window) {
            const recognition = new webkitSpeechRecognition();
            recognition.continuous = false;
            recognition.interimResults = false;
            
            recognition.onresult = (event) => {
                const command = event.results[0][0].transcript.toLowerCase();
                this.processVoiceCommand(command);
            };
            
            // Voice commands
            const commands = {
                'capture': () => this.captureImage(),
                'take picture': () => this.captureImage(),
                'cancel': () => this.cancelCapture(),
                'help': () => this.provideHelp(),
                'repeat': () => this.repeatLastInstruction()
            };
            
            recognition.start();
        }
    }
    
    enableSwitchControl() {
        // Support for external switch devices
        let currentFocusIndex = 0;
        const focusableElements = this.getFocusableElements();
        
        document.addEventListener('keydown', (event) => {
            if (event.code === 'Space' && event.ctrlKey) {
                // Switch navigation
                this.cycleFocus(focusableElements);
                event.preventDefault();
            }
        });
    }
}

class SimplifiedInterface {
    
    enableSimplifiedMode() {
        // Remove non-essential UI elements
        this.hideAdvancedOptions();
        
        // Larger touch targets
        this.enlargeInteractiveElements();
        
        // Step-by-step guidance
        this.enableStepByStepMode();
        
        // Clearer visual indicators
        this.enhanceVisualCues();
    }
    
    enlargeInteractiveElements() {
        const style = document.createElement('style');
        style.textContent = `
            .simplified-mode .capture-button {
                min-width: 60px;
                min-height: 60px;
                font-size: 18px;
            }
            
            .simplified-mode .nav-button {
                min-width: 48px;
                min-height: 48px;
                padding: 12px;
            }
        `;
        document.head.appendChild(style);
    }
    
    enableStepByStepMode() {
        const steps = [
            "Position your check in good lighting",
            "Align check with the frame guides", 
            "Hold steady and tap capture when ready",
            "Review the captured image"
        ];
        
        this.currentStep = 0;
        this.displayCurrentStep();
    }
}

const accessibilityColors = {
    // WCAG AAA compliance (7:1 contrast ratio)
    highContrast: {
        background: '#000000',
        text: '#ffffff',
        accent: '#ffff00',
        success: '#00ff00',
        error: '#ff6b6b'
    },
    
    // WCAG AA compliance (4.5:1 contrast ratio)
    standardContrast: {
        background: '#1a1a1a',
        text: '#ffffff',
        accent: '#4f9eff',
        success: '#00c851',
        error: '#ff4444'
    }
};

// Using axe-core for automated testing
const axeConfig = {
    rules: {
        'color-contrast': { enabled: true },
        'keyboard': { enabled: true },
        'aria-valid-attr': { enabled: true },
        'aria-required-attr': { enabled: true },
        'focus-order-semantics': { enabled: true }
    }
};

async function runAccessibilityAudit() {
    const results = await axe.run(document, axeConfig);
    
    if (results.violations.length > 0) {
        console.log('Accessibility violations found:', results.violations);
        return false;
    }
    
    return true;
}