// 用户资料页面JavaScript
(function() {
    'use strict';
    
    // 页面初始化
    document.addEventListener('DOMContentLoaded', function() {
        initProfilePage();
    });
    
    function initProfilePage() {
        bindFormEvents();
        bindInputValidation();
        showInitialMessage();
        initTabs();
    }
    
    // 绑定表单事件
    function bindFormEvents() {
        const profileForm = document.getElementById('profileForm');
        const passwordForm = document.getElementById('passwordForm');
        
        console.log('Profile form found:', !!profileForm);
        console.log('Password form found:', !!passwordForm);
        
        if (profileForm) {
            profileForm.addEventListener('submit', handleProfileUpdate);
            console.log('Profile form event listener added');
        }
        
        if (passwordForm) {
            passwordForm.addEventListener('submit', handlePasswordChange);
            console.log('Password form event listener added');
        }
    }
    
    // 处理用户资料更新
    async function handleProfileUpdate(event) {
        event.preventDefault();
        
        const form = event.target;
        const submitBtn = form.querySelector('button[type="submit"]');
        const originalText = submitBtn.textContent;
        
        try {
            setButtonLoading(submitBtn, true);
            
            const formData = new FormData(form);
            const data = Object.fromEntries(formData.entries());
            
            // 验证必填字段
            if (!validateProfileData(data)) {
                return;
            }
            
            const response = await fetch('/profile/update', {
                method: 'POST',
                headers: { 'Content-Type': 'application/json' },
                body: JSON.stringify(data)
            });
            
            const result = await response.json();
            
            if (result.success) {
                showMessage('资料更新成功！', 'success', 'profileForm');
                updateUserInfoDisplay(result.user);
            } else {
                throw new Error(result.message || '更新失败');
            }
            
        } catch (error) {
            showMessage(error.message || '更新失败，请重试', 'error', 'profileForm');
            console.error('Profile update error:', error);
        } finally {
            setButtonLoading(submitBtn, false, originalText);
        }
    }
    
    // 处理密码修改
    async function handlePasswordChange(event) {
        event.preventDefault();
        
        const form = event.target;
        const submitBtn = form.querySelector('button[type="submit"]');
        const originalText = submitBtn.textContent;
        
        try {
            setButtonLoading(submitBtn, true);
            
            const formData = new FormData(form);
            const data = Object.fromEntries(formData.entries());
            
            if (!validatePasswordData(data)) {
                return;
            }
            
            const response = await fetch('/profile/change-password', {
                method: 'POST',
                headers: { 'Content-Type': 'application/json' },
                body: JSON.stringify(data)
            });
            
            const result = await response.json();
            
            if (result.success) {
                showMessage('密码修改成功！', 'success', 'passwordForm');
                form.reset();
            } else {
                throw new Error(result.message || '密码修改失败');
            }
            
        } catch (error) {
            showMessage(error.message || '密码修改失败，请重试', 'error', 'passwordForm');
            console.error('Password change error:', error);
        } finally {
            setButtonLoading(submitBtn, false, originalText);
        }
    }
    
    // 验证用户资料数据
    function validateProfileData(data) {
        if (!data.username.trim()) {
            showMessage('用户名不能为空', 'error', 'profileForm');
            return false;
        }
        
        if (data.username.length < 3) {
            showMessage('用户名长度不能少于3位', 'error', 'profileForm');
            return false;
        }
        
        if (data.email && !isValidEmail(data.email)) {
            showMessage('请输入有效的邮箱地址', 'error', 'profileForm');
            return false;
        }
        
        return true;
    }
    
    // 验证密码数据
    function validatePasswordData(data) {
        const { oldPassword, newPassword, confirmPassword } = data;
        
        if (!oldPassword || !newPassword || !confirmPassword) {
            showMessage('请填写所有密码字段', 'error', 'passwordForm');
            return false;
        }
        
        if (newPassword.length < 6) {
            showMessage('新密码长度不能少于6位', 'error', 'passwordForm');
            return false;
        }
        
        if (newPassword !== confirmPassword) {
            showMessage('新密码与确认密码不匹配', 'error', 'passwordForm');
            return false;
        }
        
        if (oldPassword === newPassword) {
            showMessage('新密码不能与当前密码相同', 'error', 'passwordForm');
            return false;
        }
        
        return true;
    }
    
    // 绑定输入验证
    function bindInputValidation() {
        const inputs = document.querySelectorAll('.form-input, .form-textarea');
        
        inputs.forEach(input => {
            input.addEventListener('blur', function() {
                validateField(this);
            });
            
            input.addEventListener('input', function() {
                clearFieldError(this);
            });
        });
    }
    
    // 验证单个字段
    function validateField(field) {
        const value = field.value.trim();
        const fieldName = field.name;
        
        clearFieldError(field);
        
        let isValid = true;
        let errorMessage = '';
        
        switch (fieldName) {
            case 'username':
                if (!value) {
                    isValid = false;
                    errorMessage = '用户名不能为空';
                } else if (value.length < 3) {
                    isValid = false;
                    errorMessage = '用户名长度不能少于3位';
                }
                break;
                
            case 'email':
                if (value && !isValidEmail(value)) {
                    isValid = false;
                    errorMessage = '请输入有效的邮箱地址';
                }
                break;
                
            case 'newPassword':
                if (value && value.length < 6) {
                    isValid = false;
                    errorMessage = '密码长度不能少于6位';
                }
                break;
        }
        
        if (!isValid) {
            showFieldError(field, errorMessage);
        }
        
        return isValid;
    }
    
    // 显示字段错误
    function showFieldError(field, message) {
        field.classList.add('error');
        
        let errorElement = field.parentNode.querySelector('.error-message');
        if (!errorElement) {
            errorElement = document.createElement('div');
            errorElement.className = 'error-message';
            field.parentNode.appendChild(errorElement);
        }
        
        errorElement.textContent = message;
        errorElement.classList.add('show');
    }
    
    // 清除字段错误
    function clearFieldError(field) {
        field.classList.remove('error');
        
        const errorElement = field.parentNode.querySelector('.error-message');
        if (errorElement) {
            errorElement.classList.remove('show');
        }
    }
    
    // 验证邮箱格式
    function isValidEmail(email) {
        const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
        return emailRegex.test(email);
    }
    
    // 设置按钮加载状态
    function setButtonLoading(button, loading, originalText = null) {
        if (loading) {
            button.disabled = true;
            button.textContent = '处理中...';
            button.classList.add('loading');
        } else {
            button.disabled = false;
            button.textContent = originalText || button.textContent;
            button.classList.remove('loading');
        }
    }
    
    // 显示消息
    function showMessage(message, type = 'info', formId = null) {
        console.log('showMessage called with:', { message, type, formId });
        removeExistingMessages();
        
        let targetContainer;
        if (formId === 'profileForm') {
            targetContainer = document.querySelector('#profileForm .message-container');
            console.log('Looking for profileForm message container:', !!targetContainer);
        } else if (formId === 'passwordForm') {
            targetContainer = document.querySelector('#passwordForm .message-container');
            console.log('Looking for passwordForm message container:', !!targetContainer);
        } else {
            // 如果没有指定表单，使用默认容器
            targetContainer = document.querySelector('.profile-content');
            console.log('Using default container:', !!targetContainer);
        }
        
        if (!targetContainer) {
            console.warn('Message container not found for formId:', formId);
            console.warn('Available containers:', document.querySelectorAll('.message-container'));
            // 尝试使用备用容器
            targetContainer = document.querySelector('.message-container');
            if (!targetContainer) {
                console.error('No message container found anywhere');
                return;
            }
        }
        
        console.log('Target container found:', targetContainer);
        
        const messageElement = document.createElement('div');
        messageElement.className = `message ${type} show`;
        
        const messageText = document.createElement('span');
        messageText.textContent = message;
        messageElement.appendChild(messageText);
        
        const closeButton = document.createElement('button');
        closeButton.className = 'message-close';
        closeButton.type = 'button';
        closeButton.innerHTML = '×';
        closeButton.onclick = function() {
            messageElement.remove();
        };
        messageElement.appendChild(closeButton);
        
        targetContainer.appendChild(messageElement);
        console.log('Message added to container');
        
        // 5秒后自动隐藏
        setTimeout(() => {
            if (messageElement.parentNode) {
                messageElement.remove();
            }
        }, 5000);
    }
    
    // 关闭指定消息
    function closeMessage(messageId) {
        const messageElement = document.getElementById(messageId);
        if (messageElement) {
            messageElement.remove();
        }
    }
    
    // 移除现有消息
    function removeExistingMessages() {
        const existingMessages = document.querySelectorAll('.message');
        existingMessages.forEach(msg => msg.remove());
    }
    
    // 显示初始消息
    function showInitialMessage() {
        const urlParams = new URLSearchParams(window.location.search);
        const msg = urlParams.get('msg');
        const msgType = urlParams.get('type') || 'info';
        
        if (msg) {
            showMessage(decodeURIComponent(msg), msgType);
            const newUrl = window.location.pathname;
            window.history.replaceState({}, document.title, newUrl);
        }
    }
    
    // 更新用户信息显示
    function updateUserInfoDisplay(user) {
        const infoItems = document.querySelectorAll('.info-value');
        infoItems.forEach(item => {
            const label = item.previousElementSibling.textContent;
            if (label.includes('最后更新')) {
                item.textContent = new Date().toLocaleDateString('zh-CN');
            }
        });
    }
    
    // 重置表单
    function resetForm() {
        const form = document.getElementById('profileForm');
        if (form) {
            form.reset();
            const inputs = form.querySelectorAll('.form-input, .form-textarea');
            inputs.forEach(input => clearFieldError(input));
            showMessage('表单已重置', 'info');
        }
    }
    
    // 重置密码表单
    function resetPasswordForm() {
        console.log('resetPasswordForm called');
        const form = document.getElementById('passwordForm');
        console.log('Password form found:', !!form);
        
        if (form) {
            form.reset();
            const inputs = form.querySelectorAll('.form-input');
            inputs.forEach(input => clearFieldError(input));
            
            // 查找消息容器
            const messageContainer = form.querySelector('.message-container');
            console.log('Message container found:', !!messageContainer);
            
            showMessage('密码表单已清空', 'info', 'passwordForm');
        } else {
            console.error('Password form not found');
        }
    }
    
    // 初始化标签页
    function initTabs() {
        const tabBtns = document.querySelectorAll('.tab-btn');
        const tabPanes = document.querySelectorAll('.tab-pane');
        
        console.log('Initializing tabs...');
        console.log('Tab buttons found:', tabBtns.length);
        console.log('Tab panes found:', tabPanes.length);
        
        if (tabBtns.length === 0 || tabPanes.length === 0) {
            console.warn('Tab elements not found');
            return;
        }
        
        tabBtns.forEach(btn => {
            btn.addEventListener('click', function() {
                const targetTab = this.getAttribute('data-tab');
                console.log('Tab clicked:', targetTab); // 调试日志
                
                // 移除所有活动状态
                tabBtns.forEach(b => b.classList.remove('active'));
                tabPanes.forEach(p => p.classList.remove('active'));
                
                // 添加活动状态到当前标签
                this.classList.add('active');
                const targetPane = document.getElementById(targetTab + '-tab');
                if (targetPane) {
                    targetPane.classList.add('active');
                    console.log('Tab pane activated:', targetTab + '-tab'); // 调试日志
                    
                    // 重新绑定表单事件，确保新显示的Tab中的表单能正常工作
                    setTimeout(() => {
                        bindFormEvents();
                    }, 100);
                } else {
                    console.error('Target tab pane not found:', targetTab + '-tab');
                }
            });
        });
        
        // 确保默认标签页是激活状态
        const defaultTab = document.querySelector('.tab-btn.active');
        const defaultPane = document.querySelector('.tab-pane.active');
        if (defaultTab && defaultPane) {
            console.log('Default tab initialized:', defaultTab.getAttribute('data-tab'));
        }
    }
    
    // 导出函数供HTML调用
    window.resetForm = resetForm;
    window.resetPasswordForm = resetPasswordForm;
    window.closeMessage = closeMessage;
    
})();