// 通用工具函数
// AJAX全局设置
$.ajaxSetup({
    beforeSend: function(xhr, settings) {
        if (!settings.url.includes('/api/login')) {
            const token = localStorage.getItem('access_token');
            if (token) {
                xhr.setRequestHeader('Authorization', 'Bearer ' + token);
            }
        }
    }
});
// 检查登录状态
function checkAuth() {
    const token = localStorage.getItem('access_token');
    if (!token) {
        window.location.href = '/';
        return false;
    }
    return true;
}

// 获取当前用户信息
function getCurrentUser() {
    if (!checkAuth()) return;

    $.ajax({
        url: '/api/me',
        method: 'GET',
        success: function(data) {
            $('#current-username').text(data.username);
            localStorage.setItem('current_user', JSON.stringify(data));

            if (data.role === 'admin') {
                $('.admin-only').show();
                $('#nav-users').show();
            }
        },
        error: function(xhr) {
            if (xhr.status === 401 || xhr.status === 422) {
                logout();
            }
        }
    });
}

// 退出登录
function logout() {
    localStorage.removeItem('access_token');
    localStorage.removeItem('current_user');
    window.location.href = '/';
}

// 格式化日期
function formatDate(dateString) {
    if (!dateString) return '-';
    const date = new Date(dateString);
    return date.toLocaleDateString('zh-CN');
}

// 格式化日期时间
function formatDateTime(dateString) {
    if (!dateString) return '-';
    const date = new Date(dateString);
    return date.toLocaleString('zh-CN');
}

// 显示错误消息
function showError(message) {
    alert(message);
}

// 显示成功消息
function showSuccess(message) {
    alert(message);
}

// AJAX错误处理
function handleAjaxError(xhr) {
    if (xhr.status === 401) {
        alert('登录已过期，请重新登录');
        logout();
    } else if (xhr.status === 403 && xhr.responseJSON?.code === 'USER_DISABLED') {
        alert('您的账号已被禁用，请联系管理员');
        logout();
    } else {
        const error = xhr.responseJSON?.error || '操作失败';
        showError(error);
    }
}

// 获取状态徽章HTML
function getStatusBadge(status) {
    const statusMap = {
        'pending': { text: '待认领', class: 'status-pending' },
        'claimed': { text: '已认领', class: 'status-claimed' },
        'completed': { text: '已完成', class: 'status-completed' }
    };
    
    const info = statusMap[status] || { text: status, class: '' };
    return `<span class="badge badge-status ${info.class}">${info.text}</span>`;
}

// 获取优先级样式类
function getPriorityClass(priority) {
    const map = {
        '高': 'priority-high',
        '中': 'priority-medium',
        '低': 'priority-low'
    };
    return map[priority] || '';
}

// 页面加载时初始化
$(document).ready(function() {
    // 如果不是登录页，检查认证
    if (!window.location.pathname.match(/^\/?$/)) {
        checkAuth();
        getCurrentUser();
    }
});