/**
 * HVAC jQuery Compatibility Fix
 * 
 * Resolves jQuery no-conflict mode issues in WordPress environments
 * where $ is not available globally but window.jQuery is.
 * 
 * This fix ensures all HVAC JavaScript files can access jQuery
 * methods like removeClass, addClass, etc. without errors.
 * 
 * @version 1.0.0
 * @date August 12, 2025
 */

(function() {
    'use strict';
    
    console.log('🔧 HVAC jQuery Compatibility Fix Loading...');
    
    // Ensure jQuery is available
    if (typeof window.jQuery === 'undefined') {
        console.error('❌ HVAC Compatibility Fix: jQuery not found!');
        return;
    }
    
    // Store jQuery version for debugging
    const jqueryVersion = window.jQuery.fn.jquery;
    console.log(`✅ jQuery ${jqueryVersion} detected`);
    
    // Create global $ alias if not available
    if (typeof window.$ === 'undefined') {
        window.$ = window.jQuery;
        console.log('🔗 Global $ alias created from window.jQuery');
    }
    
    // Extend jQuery with HVAC-specific compatibility methods
    window.jQuery.extend({
        hvacSafeFind: function(selector) {
            try {
                return window.jQuery(selector);
            } catch (error) {
                console.warn('⚠️ HVAC Safe Find Error:', error.message, 'for selector:', selector);
                return window.jQuery();
            }
        }
    });
    
    // Add HVAC-specific jQuery methods to prototype for enhanced compatibility
    window.jQuery.fn.extend({
        hvacSafeRemoveClass: function(className) {
            try {
                if (this.length > 0) {
                    return this.removeClass(className);
                }
                return this;
            } catch (error) {
                console.warn('⚠️ HVAC Safe Remove Class Error:', error.message);
                // Fallback to vanilla JavaScript
                this.each(function() {
                    if (this.classList && className) {
                        this.classList.remove(className);
                    }
                });
                return this;
            }
        },
        
        hvacSafeAddClass: function(className) {
            try {
                if (this.length > 0) {
                    return this.addClass(className);
                }
                return this;
            } catch (error) {
                console.warn('⚠️ HVAC Safe Add Class Error:', error.message);
                // Fallback to vanilla JavaScript
                this.each(function() {
                    if (this.classList && className) {
                        this.classList.add(className);
                    }
                });
                return this;
            }
        },
        
        hvacSafeVal: function(value) {
            try {
                if (typeof value !== 'undefined') {
                    return this.val(value);
                }
                return this.val();
            } catch (error) {
                console.warn('⚠️ HVAC Safe Val Error:', error.message);
                if (this.length > 0) {
                    return this[0].value || '';
                }
                return '';
            }
        }
    });
    
    // Global error handler for jQuery-related errors
    window.addEventListener('error', function(event) {
        if (event.error && event.error.message) {
            const message = event.error.message;
            if (message.includes('removeClass') || 
                message.includes('addClass') || 
                message.includes('$ is not defined') ||
                message.includes('jQuery')) {
                
                console.warn('🚨 HVAC jQuery Compatibility Issue Detected:', message);
                console.warn('💡 Suggestion: Use window.jQuery instead of $ or wrap code in jQuery(document).ready()');
                
                // Attempt to fix common issues
                if (typeof window.$ === 'undefined' && typeof window.jQuery !== 'undefined') {
                    window.$ = window.jQuery;
                    console.log('🔧 Auto-fixed: Created global $ alias');
                }
            }
        }
    });
    
    // Enhanced Field Population System Integration
    function initializeEnhancedFieldPopulation() {
        // Wait for enhanced field population system to load
        const checkInterval = setInterval(function() {
            if (typeof window.HVACEnhancedFieldPopulation !== 'undefined') {
                console.log('✅ Enhanced Field Population System detected');
                clearInterval(checkInterval);
                
                // Test the system
                try {
                    if (typeof window.HVACEnhancedFieldPopulation.testFieldAccess === 'function') {
                        const testResult = window.HVACEnhancedFieldPopulation.testFieldAccess();
                        console.log('🧪 Field Access Test Result:', testResult);
                    }
                } catch (error) {
                    console.error('❌ Enhanced Field Population Test Error:', error.message);
                }
            }
        }, 500);
        
        // Stop checking after 10 seconds
        setTimeout(function() {
            clearInterval(checkInterval);
        }, 10000);
    }
    
    // Safe document ready function
    function safeDocumentReady(callback) {
        if (typeof window.jQuery !== 'undefined') {
            window.jQuery(document).ready(callback);
        } else {
            if (document.readyState === 'loading') {
                document.addEventListener('DOMContentLoaded', callback);
            } else {
                callback();
            }
        }
    }
    
    // Initialize when DOM is ready
    safeDocumentReady(function() {
        console.log('🎯 HVAC jQuery Compatibility Fix Active');
        
        // Test jQuery operations
        try {
            const testElement = window.jQuery('<div>').addClass('hvac-test');
            if (testElement.hasClass('hvac-test')) {
                console.log('✅ jQuery operations working correctly');
            }
        } catch (error) {
            console.error('❌ jQuery operations test failed:', error.message);
        }
        
        // Initialize enhanced field population integration
        initializeEnhancedFieldPopulation();
        
        // Export compatibility functions to global scope for other scripts
        window.HVACjQuery = {
            safeFind: function(selector) {
                return window.jQuery.hvacSafeFind(selector);
            },
            safeRemoveClass: function(element, className) {
                return window.jQuery(element).hvacSafeRemoveClass(className);
            },
            safeAddClass: function(element, className) {
                return window.jQuery(element).hvacSafeAddClass(className);
            },
            safeVal: function(element, value) {
                return window.jQuery(element).hvacSafeVal(value);
            },
            version: jqueryVersion,
            isReady: true
        };
        
        console.log('🚀 HVAC jQuery Compatibility Fix Ready');
    });
    
    console.log('📄 HVAC jQuery Compatibility Fix Loaded');
    
})();