// NAC资产一键上链系统 - 主JS脚本

// API基础URL
const API_BASE_URL = '/api';

// 工具函数：获取JWT Token
function getToken() {
    return localStorage.getItem('token');
}

// 工具函数：设置JWT Token
function setToken(token) {
    localStorage.setItem('token', token);
}

// 工具函数：清除JWT Token
function clearToken() {
    localStorage.removeItem('token');
    localStorage.removeItem('user');
}

// 工具函数：获取用户信息
function getUser() {
    const userStr = localStorage.getItem('user');
    return userStr ? JSON.parse(userStr) : null;
}

// 工具函数：设置用户信息
function setUser(user) {
    localStorage.setItem('user', JSON.stringify(user));
}

// 工具函数：API请求
async function apiRequest(endpoint, options = {}) {
    const token = getToken();
    const headers = {
        'Content-Type': 'application/json',
        ...options.headers,
    };

    if (token) {
        headers['Authorization'] = `Bearer ${token}`;
    }

    try {
        const response = await fetch(`${API_BASE_URL}${endpoint}`, {
            ...options,
            headers,
        });

        const data = await response.json();

        if (!response.ok) {
            throw new Error(data.message || '请求失败');
        }

        return data;
    } catch (error) {
        console.error('API请求错误:', error);
        throw error;
    }
}

// 工具函数：显示提示消息
function showAlert(message, type = 'info') {
    const alertDiv = document.createElement('div');
    alertDiv.className = `alert alert-${type}`;
    alertDiv.textContent = message;
    alertDiv.style.position = 'fixed';
    alertDiv.style.top = '20px';
    alertDiv.style.right = '20px';
    alertDiv.style.zIndex = '3000';
    alertDiv.style.minWidth = '300px';

    document.body.appendChild(alertDiv);

    setTimeout(() => {
        alertDiv.remove();
    }, 3000);
}

// 工具函数：格式化日期
function formatDate(dateString) {
    const date = new Date(dateString);
    return date.toLocaleString('zh-CN');
}

// 工具函数：格式化状态
function formatState(state) {
    const stateMap = {
        'Pending': '待处理',
        'ComplianceChecking': 'AI合规审批中',
        'Valuating': 'AI估值中',
        'GeneratingDNA': '生成DNA中',
        'Custodying': '托管对接中',
        'MintingXTZH': 'XTZH铸造中',
        'IssuingToken': '代币发行中',
        'Listing': '链上公示中',
        'Listed': '已上链',
        'Failed': '失败',
    };
    return stateMap[state] || state;
}

// 工具函数：获取状态样式类
function getStateClass(state) {
    const classMap = {
        'Pending': 'status-pending',
        'ComplianceChecking': 'status-processing',
        'Valuating': 'status-processing',
        'GeneratingDNA': 'status-processing',
        'Custodying': 'status-processing',
        'MintingXTZH': 'status-processing',
        'IssuingToken': 'status-processing',
        'Listing': 'status-processing',
        'Listed': 'status-success',
        'Failed': 'status-failed',
    };
    return classMap[state] || 'status-pending';
}

// 初始化导航栏
function initNav() {
    const token = getToken();
    const user = getUser();

    const loginLink = document.getElementById('login-link');
    const registerLink = document.getElementById('register-link');
    const dashboardLink = document.getElementById('dashboard-link');
    const adminLink = document.getElementById('admin-link');
    const logoutLink = document.getElementById('logout-link');

    if (token && user) {
        // 已登录
        if (loginLink) loginLink.style.display = 'none';
        if (registerLink) registerLink.style.display = 'none';
        if (dashboardLink) dashboardLink.style.display = 'inline';
        if (logoutLink) logoutLink.style.display = 'inline';

        // 管理员显示管理链接
        if (user.role === 'admin' && adminLink) {
            adminLink.style.display = 'inline';
        }
    } else {
        // 未登录
        if (loginLink) loginLink.style.display = 'inline';
        if (registerLink) registerLink.style.display = 'inline';
        if (dashboardLink) dashboardLink.style.display = 'none';
        if (adminLink) adminLink.style.display = 'none';
        if (logoutLink) logoutLink.style.display = 'none';
    }

    // 退出登录
    if (logoutLink) {
        logoutLink.addEventListener('click', (e) => {
            e.preventDefault();
            clearToken();
            showAlert('已退出登录', 'success');
            setTimeout(() => {
                window.location.href = '/';
            }, 1000);
        });
    }
}

// 页面加载完成后初始化
document.addEventListener('DOMContentLoaded', () => {
    initNav();
});

// 导出工具函数供其他页面使用
window.NAC = {
    apiRequest,
    getToken,
    setToken,
    clearToken,
    getUser,
    setUser,
    showAlert,
    formatDate,
    formatState,
    getStateClass,
};