/**
 * Contextual Hint System
 * 
 * A subtle, non-intrusive tooltip system providing just-in-time guidance and learning
 * for the Quantum NLP Framework. This system detects when a user might need help
 * understanding a feature and provides relevant information without disrupting workflow.
 */

class ContextualHintSystem {
    constructor() {
        this.hints = {};
        this.activeHint = null;
        this.hintContainer = null;
        this.shownHints = [];
        
        this.initialize();
    }
    
    /**
     * Initialize the hint system
     */
    initialize() {
        // Load previously shown hints
        this.loadShownHints();
        
        // Register predefined hints
        this.registerPredefinedHints();
        
        // Initialize scroll listener for detecting visible elements
        this.initScrollListener();
        
        // Create container for hints if it doesn't exist
        if (!document.getElementById('contextual-hints-container')) {
            this.hintContainer = document.createElement('div');
            this.hintContainer.id = 'contextual-hints-container';
            document.body.appendChild(this.hintContainer);
        } else {
            this.hintContainer = document.getElementById('contextual-hints-container');
        }
        
        // Listen for ESC key to dismiss hints
        document.addEventListener('keydown', (e) => {
            if (e.key === 'Escape' && this.activeHint) {
                this.dismissActiveHint();
            }
        });
        
        // Listen for clicks outside hint to dismiss
        document.addEventListener('click', (e) => {
            if (this.activeHint && !this.activeHint.contains(e.target)) {
                // Check if the click was not on the target element either
                const activeHintId = this.activeHint.getAttribute('data-hint-id');
                const targetElement = document.querySelector(`[data-hint="${activeHintId}"]`);
                
                if (!targetElement || !targetElement.contains(e.target)) {
                    this.dismissActiveHint();
                }
            }
        });
    }
    
    /**
     * Register a hint with the system
     * @param {string} id - Unique identifier for the hint
     * @param {object} options - Hint options
     */
    registerHint(id, options) {
        this.hints[id] = {
            title: options.title || 'Hint',
            content: options.content || '',
            position: options.position || 'bottom',
            important: options.important || false,
            maxShows: options.maxShows || 3,
            icon: options.icon || 'fas fa-lightbulb',
            selector: options.selector || null,
            particles: options.particles || false,
            trigger: options.trigger || 'auto', // auto, manual, hover
            buttonText: options.buttonText || 'Got it',
            onShown: options.onShown || null,
            onDismiss: options.onDismiss || null
        };
        
        // Attach triggers for this hint if necessary
        if (options.selector) {
            this.attachHintTrigger(id);
        }
    }
    
    /**
     * Register all predefined hints for the application
     */
    registerPredefinedHints() {
        // Quantum Dimensions hint
        this.registerHint('quantum-dimensions', {
            title: 'Quantum Dimensions',
            content: 'Increase dimensions for deeper, multi-layered analysis of your text. Higher dimensions explore more interconnected thought paths.',
            position: 'top',
            selector: '#depth',
            icon: 'fas fa-layer-group',
            trigger: 'hover'
        });
        
        // OpenAI integration hint
        this.registerHint('openai-integration', {
            title: 'AI Enhancement',
            content: 'Enable this to use OpenAI for generating human-like responses based on quantum analysis results. Requires API key in settings.',
            position: 'right',
            selector: '#use_ai',
            icon: 'fas fa-robot',
            important: !document.body.classList.contains('has-openai-key')
        });
        
        // Analyze button hint
        this.registerHint('analyze-button', {
            title: 'Quantum Analysis',
            content: 'Start the quantum-inspired recursive thinking process to analyze your text through multiple dimensions.',
            position: 'top',
            selector: '#analyze-btn',
            particles: true,
            maxShows: 2
        });
        
        // Quantum Score hint
        this.registerHint('quantum-score', {
            title: 'Quantum Score',
            content: 'This score represents the confidence and coherence of the quantum analysis across all dimensions.',
            position: 'left',
            selector: '.quantum-score-visualization',
            icon: 'fas fa-chart-line',
            trigger: 'manual'
        });
        
        // Zap Integrations hint
        this.registerHint('zap-integrations', {
            title: 'ZAP Integrations',
            content: 'Connect the Quantum Framework to other services and applications to extend its capabilities.',
            position: 'bottom',
            selector: 'a[href="/zap-integrations"]',
            icon: 'fas fa-bolt',
            trigger: 'hover'
        });
        
        // Automation Workflow hint
        this.registerHint('automation-workflow', {
            title: 'Automation Workflow',
            content: 'View and configure automated tasks and workflows using the quantum framework.',
            position: 'bottom',
            selector: 'a[href="/automation-workflow"]',
            icon: 'fas fa-cogs',
            trigger: 'hover'
        });
        
        // Named Entities hint
        this.registerHint('named-entities', {
            title: 'Named Entities',
            content: 'These are specific objects identified in your text like people, organizations, locations, and more.',
            position: 'right',
            selector: '.quantum-entity-item',
            icon: 'fas fa-fingerprint',
            trigger: 'manual'
        });
    }
    
    /**
     * Attach a trigger to show a hint when interacting with an element
     * @param {string} hintId - The ID of the hint to trigger
     */
    attachHintTrigger(hintId) {
        const hint = this.hints[hintId];
        if (!hint || !hint.selector) return;
        
        // Find all matching elements
        const elements = document.querySelectorAll(hint.selector);
        if (elements.length === 0) return;
        
        elements.forEach(element => {
            // Add data attribute to mark the element as a hint target
            element.setAttribute('data-hint', hintId);
            element.classList.add('hint-target');
            
            // Attach event listeners based on trigger type
            if (hint.trigger === 'hover') {
                element.addEventListener('mouseenter', () => {
                    this.considerShowingHint(hintId, element);
                    element.classList.add('hint-highlight');
                });
                
                element.addEventListener('mouseleave', () => {
                    element.classList.remove('hint-highlight');
                });
            } else if (hint.trigger === 'auto') {
                // For auto triggers, we'll check visibility in the scroll listener
                // and show the hint when appropriate
            }
            
            // For manual triggers, the hint will be shown programmatically
        });
    }
    
    /**
     * Consider whether to show a hint based on whether it's been shown before
     * @param {string} hintId - The ID of the hint to consider showing
     * @param {Element} target - The target element for the hint
     */
    considerShowingHint(hintId, target) {
        // Don't show if another hint is active
        if (this.activeHint) return;
        
        const hint = this.hints[hintId];
        if (!hint) return;
        
        // Count how many times this hint has been shown
        const timesShown = this.shownHints.filter(id => id === hintId).length;
        
        // If it's been shown fewer times than the max, show it
        if (timesShown < hint.maxShows) {
            this.showHint(hintId, target);
        }
    }
    
    /**
     * Show a hint for a specific element
     * @param {string} hintId - The ID of the hint to show
     * @param {Element} targetElement - The element to attach the hint to
     */
    showHint(hintId, targetElement) {
        const hint = this.hints[hintId];
        if (!hint) return;
        
        // Dismiss any active hint
        this.dismissActiveHint();
        
        // Create the hint element
        const hintElement = document.createElement('div');
        hintElement.className = `contextual-hint position-${hint.position}`;
        hintElement.setAttribute('data-hint-id', hintId);
        
        if (hint.important) {
            hintElement.classList.add('important');
        }
        
        if (hint.particles) {
            hintElement.classList.add('has-particles');
        }
        
        // Add LED tracer effect
        const ledTracer = document.createElement('div');
        ledTracer.className = 'led-tracer';
        hintElement.appendChild(ledTracer);
        
        // Add content
        hintElement.innerHTML += `
            <div class="contextual-hint-title">
                <i class="${hint.icon}"></i>
                <h5>${hint.title}</h5>
            </div>
            <div class="contextual-hint-content">${hint.content}</div>
            <div class="contextual-hint-actions">
                <button class="hint-button hint-button-primary">${hint.buttonText}</button>
                <span class="hint-dont-show">Don't show again</span>
            </div>
        `;
        
        // Add particles if enabled
        if (hint.particles) {
            const particlesContainer = document.createElement('div');
            particlesContainer.className = 'hint-particles';
            
            // Add several particles
            for (let i = 0; i < 8; i++) {
                const particle = document.createElement('div');
                particle.className = 'hint-particle';
                particle.style.top = `${Math.random() * 100}%`;
                particle.style.left = `${Math.random() * 100}%`;
                particle.style.animationDelay = `${Math.random() * 2}s`;
                particlesContainer.appendChild(particle);
            }
            
            hintElement.appendChild(particlesContainer);
        }
        
        // Add to DOM
        this.hintContainer.appendChild(hintElement);
        
        // Position relative to target
        this.positionHint(hintElement, targetElement, hint.position);
        
        // Show with animation
        setTimeout(() => {
            hintElement.classList.add('active');
        }, 10);
        
        // Set as active hint
        this.activeHint = hintElement;
        
        // Record that this hint has been shown
        this.markHintAsShown(hintId);
        
        // Attach event listeners to buttons
        const dismissButton = hintElement.querySelector('.hint-button');
        dismissButton.addEventListener('click', () => {
            this.dismissActiveHint();
            
            // Run onDismiss callback if provided
            if (typeof hint.onDismiss === 'function') {
                hint.onDismiss();
            }
        });
        
        const dontShowAgain = hintElement.querySelector('.hint-dont-show');
        dontShowAgain.addEventListener('click', () => {
            // Add to shown hints enough times to reach maxShows
            for (let i = timesShown; i < hint.maxShows; i++) {
                this.markHintAsShown(hintId);
            }
            
            this.dismissActiveHint();
        });
        
        // Call onShown callback if provided
        if (typeof hint.onShown === 'function') {
            hint.onShown();
        }
    }
    
    /**
     * Position a hint element relative to its target
     * @param {Element} hintElement - The hint element
     * @param {Element} targetElement - The target element
     * @param {string} position - The position (top, bottom, left, right)
     */
    positionHint(hintElement, targetElement, position) {
        if (!targetElement) return;
        
        const targetRect = targetElement.getBoundingClientRect();
        const hintRect = hintElement.getBoundingClientRect();
        
        let top, left;
        
        switch (position) {
            case 'top':
                top = targetRect.top - hintRect.height - 15;
                left = targetRect.left + (targetRect.width / 2) - (hintRect.width / 2);
                hintElement.querySelector('::before').style.left = '50%';
                break;
                
            case 'bottom':
                top = targetRect.bottom + 15;
                left = targetRect.left + (targetRect.width / 2) - (hintRect.width / 2);
                hintElement.querySelector('::before').style.left = '50%';
                break;
                
            case 'left':
                top = targetRect.top + (targetRect.height / 2) - (hintRect.height / 2);
                left = targetRect.left - hintRect.width - 15;
                hintElement.querySelector('::before').style.top = '50%';
                break;
                
            case 'right':
                top = targetRect.top + (targetRect.height / 2) - (hintRect.height / 2);
                left = targetRect.right + 15;
                hintElement.querySelector('::before').style.top = '50%';
                break;
        }
        
        // Adjust if the hint would be off-screen
        const viewportWidth = window.innerWidth;
        const viewportHeight = window.innerHeight;
        
        if (left < 10) left = 10;
        if (left + hintRect.width > viewportWidth - 10) {
            left = viewportWidth - hintRect.width - 10;
        }
        
        if (top < 10) top = 10;
        if (top + hintRect.height > viewportHeight - 10) {
            top = viewportHeight - hintRect.height - 10;
        }
        
        // Set the position
        hintElement.style.top = `${top}px`;
        hintElement.style.left = `${left}px`;
    }
    
    /**
     * Dismiss the currently active hint
     */
    dismissActiveHint() {
        if (this.activeHint) {
            this.activeHint.classList.remove('active');
            
            // Remove from DOM after animation completes
            setTimeout(() => {
                if (this.activeHint && this.activeHint.parentNode) {
                    this.activeHint.parentNode.removeChild(this.activeHint);
                }
                this.activeHint = null;
            }, 300);
        }
    }
    
    /**
     * Mark a hint as having been shown
     * @param {string} hintId - The ID of the hint
     */
    markHintAsShown(hintId) {
        this.shownHints.push(hintId);
        this.saveShownHints();
    }
    
    /**
     * Check if a hint has been shown the maximum number of times
     * @param {string} hintId - The ID of the hint
     * @returns {boolean} Whether the hint has been shown max times
     */
    hasHintBeenShown(hintId) {
        const hint = this.hints[hintId];
        if (!hint) return true;
        
        const timesShown = this.shownHints.filter(id => id === hintId).length;
        return timesShown >= hint.maxShows;
    }
    
    /**
     * Load the list of shown hints from localStorage
     */
    loadShownHints() {
        const savedHints = localStorage.getItem('shownHints');
        if (savedHints) {
            try {
                this.shownHints = JSON.parse(savedHints);
            } catch (e) {
                this.shownHints = [];
            }
        }
    }
    
    /**
     * Save the list of shown hints to localStorage
     */
    saveShownHints() {
        localStorage.setItem('shownHints', JSON.stringify(this.shownHints));
    }
    
    /**
     * Reset all shown hints so they'll be shown again
     */
    resetShownHints() {
        this.shownHints = [];
        localStorage.removeItem('shownHints');
    }
    
    /**
     * Initialize the scroll listener for detecting visible elements
     */
    initScrollListener() {
        // Check initially
        this.checkVisibleElementsForHints();
        
        // Check on scroll
        window.addEventListener('scroll', () => {
            this.checkVisibleElementsForHints();
        });
        
        // Check on resize
        window.addEventListener('resize', () => {
            this.checkVisibleElementsForHints();
        });
        
        // Check after a short delay (DOM may still be loading)
        setTimeout(() => {
            this.checkVisibleElementsForHints();
        }, 1000);
    }
    
    /**
     * Check for elements with auto hints that are visible in the viewport
     */
    checkVisibleElementsForHints() {
        // Don't check if a hint is already active
        if (this.activeHint) return;
        
        // Look for elements with auto hints that are in the viewport
        for (const hintId in this.hints) {
            const hint = this.hints[hintId];
            
            if (hint.trigger !== 'auto') continue;
            if (this.hasHintBeenShown(hintId)) continue;
            
            const elements = document.querySelectorAll(`[data-hint="${hintId}"]`);
            
            for (const element of elements) {
                if (this.isElementInViewport(element)) {
                    this.considerShowingHint(hintId, element);
                    break;
                }
            }
        }
    }
    
    /**
     * Check if an element is in the viewport
     * @param {Element} el - The element to check
     * @returns {boolean} Whether the element is in the viewport
     */
    isElementInViewport(el) {
        const rect = el.getBoundingClientRect();
        
        return (
            rect.top >= 0 &&
            rect.left >= 0 &&
            rect.bottom <= (window.innerHeight || document.documentElement.clientHeight) &&
            rect.right <= (window.innerWidth || document.documentElement.clientWidth)
        );
    }
}

// Initialize the hint system when the DOM is ready
document.addEventListener('DOMContentLoaded', () => {
    window.contextualHintSystem = new ContextualHintSystem();
    
    // Manually show hints for elements that may not be detected automatically
    setTimeout(() => {
        const quantumScoreElements = document.querySelectorAll('.quantum-score-visualization');
        if (quantumScoreElements.length > 0) {
            window.contextualHintSystem.considerShowingHint('quantum-score', quantumScoreElements[0]);
        }
        
        const entityItems = document.querySelectorAll('.quantum-entity-item');
        if (entityItems.length > 0) {
            window.contextualHintSystem.considerShowingHint('named-entities', entityItems[0]);
        }
    }, 2000);
});