/**
 * 评论 API 响应接口
 */
interface CommentApiResponse {
    success: boolean;
    html?: string;
    msg?: string;
    commentCount?: string;
}

/**
 * 评论 API 模块
 * 负责与服务器通信，处理评论的发布和加载
 */
export class CommentApi {
    /**
     * 发表新评论
     * @param url 提交的URL
     * @param formData 表单数据
     * @returns 返回操作结果，包含成功状态、HTML内容、错误信息等
     */
    public async postComment(url: string, formData: FormData): Promise<CommentApiResponse> {
        try {
            const response = await fetch(url, {
                method: 'POST',
                body: formData,
                headers: {
                    'X-Requested-With': 'XMLHttpRequest',
                },
            });

            const commentCount = response.headers.get('commentCount');

            const contentType = response.headers.get('content-type');
            if (contentType && contentType.includes('application/json')) {
                const data = await response.json();
                return { success: false, msg: data.msg || '提交失败' };
            }

            const html = await response.text();

            try {
                const json = JSON.parse(html);
                if (json && json.success === false) {
                    return { success: false, msg: json.msg };
                }
            } catch (e) {
                /* 不是 JSON 格式，假定为 HTML 成功响应 */
            }

            return {
                success: true,
                html,
                commentCount: commentCount || undefined,
            };
        } catch (error) {
            console.error('评论发布错误:', error);
            return { success: false, msg: '网络请求失败' };
        }
    }

    /**
     * 加载评论（刷新或分页）
     * @param url 请求的URL
     * @returns 返回操作结果，包含成功状态、HTML内容、评论数量等
     */
    public async loadComments(url: string): Promise<CommentApiResponse> {
        try {
            const response = await fetch(url, {
                method: 'GET',
                headers: {
                    'X-Requested-With': 'XMLHttpRequest',
                },
            });

            if (!response.ok) {
                const { logger } = await import('../ConsoleLogger.ts');
                logger.outPutError(`HTTP error! status: ${response.status}`);
                return { success: false, msg: `请求失败，状态码：${response.status}` };
            }

            const commentCount = response.headers.get('commentCount');
            const html = await response.text();

            return {
                success: true,
                html,
                commentCount: commentCount || undefined,
            };
        } catch (error) {
            console.error('评论加载错误:', error);
            return { success: false };
        }
    }
}