document.addEventListener('DOMContentLoaded', function() {
    // 获取DOM元素
    const loginForm = document.getElementById('loginForm');
    const registerForm = document.getElementById('registerForm');
    const loginToggle = document.getElementById('loginToggle');
    const registerToggle = document.getElementById('registerToggle');

    // 处理密码可见性切换
    document.querySelectorAll('.toggle-password').forEach(button => {
        button.addEventListener('click', function() {
            const input = this.previousElementSibling;
            const icon = this.querySelector('.visibility-icon');
            
            // 切换密码可见性
            if (input.type === 'password') {
                input.type = 'text';
                icon.src = 'assets/icons/png/visiable_b.png';
            } else {
                input.type = 'password';
                icon.src = 'assets/icons/png/invisiable_b.png';
            }
        });
    });

    // 创建Toast提示函数
    function showToast(message) {
        const toast = document.createElement('div');
        toast.className = 'toast';
        toast.textContent = message;
        document.body.appendChild(toast);
        
        setTimeout(() => toast.classList.add('show'), 10);
        
        setTimeout(() => {
            toast.classList.remove('show');
            setTimeout(() => toast.remove(), 300);
        }, 2000);
    }

    // 添加Toast样式
    const style = document.createElement('style');
    style.textContent = `
        .toast {
            position: fixed;
            top: 20px;
            right: 20px;
            background: rgba(0, 0, 0, 0.8);
            color: white;
            padding: 12px 24px;
            border-radius: 8px;
            font-size: 14px;
            z-index: 10000;
            opacity: 0;
            transition: opacity 0.3s ease;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        }
        .toast.show {
            opacity: 1;
        }
    `;
    document.head.appendChild(style);
    
    // 处理表单切换
    if (loginToggle && registerToggle) {
        loginToggle.addEventListener('click', () => {
            loginToggle.classList.add('active');
            registerToggle.classList.remove('active');
            loginForm.classList.add('active');
            registerForm.classList.remove('active');
        });

        registerToggle.addEventListener('click', () => {
            registerToggle.classList.add('active');
            loginToggle.classList.remove('active');
            registerForm.classList.add('active');
            loginForm.classList.remove('active');
        });
    }
    
    // 处理登录表单提交
    if (loginForm) {
        loginForm.querySelector('form').addEventListener('submit', async (e) => {
            e.preventDefault();
            
            const username = document.getElementById('loginUsername').value;
            const password = document.getElementById('loginPassword').value;
            const remember = document.getElementById('remember').checked;
            
            if (!username || !password) {
                showToast('请输入用户名和密码');
                return;
            }

            try {
                const response = await fetch('/api/login', {
                    method: 'POST',
                    headers: {
                        'Content-Type': 'application/json'
                    },
                    body: JSON.stringify({
                        username,
                        password,
                        remember
                    })
                });

                const data = await response.json();
                
                if (data.success) {
                    localStorage.setItem('userInfo', JSON.stringify(data.user));
                    showToast(`欢迎回来，${data.user.username}！`);
                    setTimeout(() => {
                        window.location.href = 'main.html';
                    }, 1000);
                } else {
                    showToast(data.message || '登录失败，请检查用户名和密码');
                }
            } catch (error) {
                console.error('登录请求错误:', error);
                showToast('登录请求失败，请稍后再试');
            }
        });
    }

    // 处理注册表单提交
    if (registerForm) {
        registerForm.querySelector('form').addEventListener('submit', async (e) => {
            e.preventDefault();
            
            const username = document.getElementById('regUsername').value;
            const password = document.getElementById('regPassword').value;
            const confirmPassword = document.getElementById('regConfirmPassword').value;

            if (!username || !password) {
                showToast('用户名和密码为必填项');
                return;
            }

            if (password !== confirmPassword) {
                showToast('两次输入的密码不一致');
                return;
            }

            const userInfo = {
                full_name: document.getElementById('fullName').value.trim() || '',
                phone: document.getElementById('phone').value.trim() || '',
                email: document.getElementById('email').value.trim() || '',
                department: document.getElementById('department').value.trim() || '',
                position: document.getElementById('position').value.trim() || '',
                access_level: 1
            };

            try {
                const response = await fetch('/api/register', {
                    method: 'POST',
                    headers: {
                        'Content-Type': 'application/json'
                    },
                    body: JSON.stringify({
                        username,
                        password,
                        userInfo
                    })
                });

                const data = await response.json();
                
                if (data.success) {
                    showToast('注册成功！请登录');
                    loginToggle.click();
                    e.target.reset();
                } else {
                    let errorMessage;
                    switch (data.userId) {
                        case -1:
                            errorMessage = '注册失败：系统错误';
                            break;
                        case -2:
                            errorMessage = '注册失败：用户名已存在';
                            break;
                        case -3:
                            errorMessage = '注册失败：无效的用户信息格式';
                            break;
                        case -4:
                            errorMessage = '注册失败：用户名不能为空';
                            break;
                        case -5:
                            errorMessage = '注册失败：密码不能为空';
                            break;
                        case -6:
                            errorMessage = '注册失败：无效的权限级别';
                            break;
                        default:
                            errorMessage = data.message || '注册失败，请稍后重试';
                    }
                    showToast(errorMessage);
                }
            } catch (error) {
                console.error('注册请求失败:', error);
                showToast('注册请求失败，请稍后重试');
            }
        });
    }
});