const api = {
    async request(url, options = {}) {
        const token = Storage.getToken();
        const headers = {
            'Content-Type': 'application/json',
            ...(token ? { 'Authorization': 'Bearer ' + token } : {}),
            ...options.headers
        };

        const response = await fetch('/api' + url, {
            ...options,
            headers
        });

        // 401 自动跳转登录
        if (response.status === 401) {
            Storage.clearToken();
            window.location.href = '/login.php';
            throw new Error('请先登录');
        }

        const data = await response.json();
        if (!response.ok) {
            throw new Error(data.message || '请求失败');
        }
        return data;
    },

    get(url) {
        return this.request(url, { method: 'GET' });
    },

    post(url, data) {
        return this.request(url, {
            method: 'POST',
            body: JSON.stringify(data)
        });
    },

    put(url, data) {
        return this.request(url, {
            method: 'PUT',
            body: JSON.stringify(data)
        });
    },

    delete(url) {
        return this.request(url, { method: 'DELETE' });
    },

    // 文件上传（不用 JSON Content-Type）
    async upload(url, formData) {
        const token = Storage.getToken();
        const headers = token ? { 'Authorization': 'Bearer ' + token } : {};
        
        const response = await fetch('/api' + url, {
            method: 'POST',
            headers,
            body: formData
        });

        if (response.status === 401) {
            Storage.clearToken();
            window.location.href = '/login.php';
            throw new Error('请先登录');
        }

        const data = await response.json();
        if (!response.ok) {
            throw new Error(data.message || '上传失败');
        }
        return data;
    }
};