feat: 添加小红书Feed评论功能 (#50)

实现通过HTTP GIN API和MCP API发表评论到小红书Feed的功能：
- 新增POST /api/v1/feeds/comment端点
- 新增post_comment_to_feed MCP工具
- 添加PostCommentRequest和PostCommentResponse类型
- 实现PostCommentToFeed服务方法
- 新增CommentFeedAction用于浏览器自动化操作

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-authored-by: Claude <noreply@anthropic.com>

handlers_api.go

@@ -124,6 +124,27 @@ func (s *AppServer) getFeedDetailHandler(c *gin.Context) {
 	respondSuccess(c, result, "获取Feed详情成功")
 }
 
+// postCommentHandler 发表评论到Feed
+func (s *AppServer) postCommentHandler(c *gin.Context) {
+	var req PostCommentRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		respondError(c, http.StatusBadRequest, "INVALID_REQUEST",
+			"请求参数错误", err.Error())
+		return
+	}
+
+	// 发表评论
+	result, err := s.xiaohongshuService.PostCommentToFeed(c.Request.Context(), req.FeedID, req.XsecToken, req.Content)
+	if err != nil {
+		respondError(c, http.StatusInternalServerError, "POST_COMMENT_FAILED",
+			"发表评论失败", err.Error())
+		return
+	}
+
+	c.Set("account", "ai-report")
+	respondSuccess(c, result, result.Message)
+}
+
 // healthHandler 健康检查
 func healthHandler(c *gin.Context) {
 	respondSuccess(c, map[string]any{

mcp_handlers.go

@@ -223,3 +223,65 @@ func (s *AppServer) handleGetFeedDetail(ctx context.Context, args map[string]any
 		}},
 	}
 }
+
+// handlePostComment 处理发表评论到Feed
+func (s *AppServer) handlePostComment(ctx context.Context, args map[string]interface{}) *MCPToolResult {
+	logrus.Info("MCP: 发表评论到Feed")
+
+	// 解析参数
+	feedID, ok := args["feed_id"].(string)
+	if !ok || feedID == "" {
+		return &MCPToolResult{
+			Content: []MCPContent{{
+				Type: "text",
+				Text: "发表评论失败: 缺少feed_id参数",
+			}},
+			IsError: true,
+		}
+	}
+
+	xsecToken, ok := args["xsec_token"].(string)
+	if !ok || xsecToken == "" {
+		return &MCPToolResult{
+			Content: []MCPContent{{
+				Type: "text",
+				Text: "发表评论失败: 缺少xsec_token参数",
+			}},
+			IsError: true,
+		}
+	}
+
+	content, ok := args["content"].(string)
+	if !ok || content == "" {
+		return &MCPToolResult{
+			Content: []MCPContent{{
+				Type: "text",
+				Text: "发表评论失败: 缺少content参数",
+			}},
+			IsError: true,
+		}
+	}
+
+	logrus.Infof("MCP: 发表评论 - Feed ID: %s, 内容长度: %d", feedID, len(content))
+
+	// 发表评论
+	result, err := s.xiaohongshuService.PostCommentToFeed(ctx, feedID, xsecToken, content)
+	if err != nil {
+		return &MCPToolResult{
+			Content: []MCPContent{{
+				Type: "text",
+				Text: "发表评论失败: " + err.Error(),
+			}},
+			IsError: true,
+		}
+	}
+
+	// 返回成功结果，只包含feed_id
+	resultText := fmt.Sprintf("评论发表成功 - Feed ID: %s", result.FeedID)
+	return &MCPToolResult{
+		Content: []MCPContent{{
+			Type: "text",
+			Text: resultText,
+		}},
+	}
+}

routes.go

@@ -33,6 +33,7 @@ func setupRoutes(appServer *AppServer) *gin.Engine {
 		api.GET("/feeds/list", appServer.listFeedsHandler)
 		api.GET("/feeds/search", appServer.searchFeedsHandler)
 		api.POST("/feeds/detail", appServer.getFeedDetailHandler)
+		api.POST("/feeds/comment", appServer.postCommentHandler)
 	}
 
 	return router

service.go

@@ -192,3 +192,30 @@ func (s *XiaohongshuService) GetFeedDetail(ctx context.Context, feedID, xsecToke
 
 	return response, nil
 }
+
+// PostCommentToFeed 发表评论到Feed
+func (s *XiaohongshuService) PostCommentToFeed(ctx context.Context, feedID, xsecToken, content string) (*PostCommentResponse, error) {
+	// 使用非无头模式以便查看操作过程
+	b := browser.NewBrowser(false)
+	defer b.Close()
+
+	page := b.NewPage()
+	defer page.Close()
+
+	// 创建 Feed 评论 action
+	action := xiaohongshu.NewCommentFeedAction(page)
+
+	// 发表评论
+	err := action.PostComment(ctx, feedID, xsecToken, content)
+	if err != nil {
+		return nil, err
+	}
+
+	response := &PostCommentResponse{
+		FeedID:  feedID,
+		Success: true,
+		Message: "评论发表成功",
+	}
+
+	return response, nil
+}

streamable_http.go

@@ -233,6 +233,28 @@ func (s *AppServer) processToolsList(request *JSONRPCRequest) *JSONRPCResponse {
 				"required": []string{"feed_id", "xsec_token"},
 			},
 		},
+		{
+			"name":        "post_comment_to_feed",
+			"description": "发表评论到小红书笔记",
+			"inputSchema": map[string]interface{}{
+				"type": "object",
+				"properties": map[string]interface{}{
+					"feed_id": map[string]interface{}{
+						"type":        "string",
+						"description": "小红书笔记ID，从Feed列表获取",
+					},
+					"xsec_token": map[string]interface{}{
+						"type":        "string",
+						"description": "访问令牌，从Feed列表的xsecToken字段获取",
+					},
+					"content": map[string]interface{}{
+						"type":        "string",
+						"description": "评论内容",
+					},
+				},
+				"required": []string{"feed_id", "xsec_token", "content"},
+			},
+		},
 	}
 
 	return &JSONRPCResponse{
@@ -275,6 +297,8 @@ func (s *AppServer) processToolCall(ctx context.Context, request *JSONRPCRequest
 		result = s.handleSearchFeeds(ctx, toolArgs)
 	case "get_feed_detail":
 		result = s.handleGetFeedDetail(ctx, toolArgs)
+	case "post_comment_to_feed":
+		result = s.handlePostComment(ctx, toolArgs)
 	default:
 		return &JSONRPCResponse{
 			JSONRPC: "2.0",

types.go

@@ -72,3 +72,17 @@ type FeedDetailResponse struct {
 	FeedID string `json:"feed_id"`
 	Data   any    `json:"data"`
 }
+
+// PostCommentRequest 发表评论请求
+type PostCommentRequest struct {
+	FeedID    string `json:"feed_id" binding:"required"`
+	XsecToken string `json:"xsec_token" binding:"required"`
+	Content   string `json:"content" binding:"required"`
+}
+
+// PostCommentResponse 发表评论响应
+type PostCommentResponse struct {
+	FeedID  string `json:"feed_id"`
+	Success bool   `json:"success"`
+	Message string `json:"message"`
+}

xiaohongshu/comment_feed.go

@@ -0,0 +1,50 @@
+package xiaohongshu
+
+import (
+	"context"
+	"time"
+
+	"github.com/go-rod/rod"
+	"github.com/sirupsen/logrus"
+)
+
+// CommentFeedAction 表示 Feed 评论动作
+type CommentFeedAction struct {
+	page *rod.Page
+}
+
+// NewCommentFeedAction 创建 Feed 评论动作
+func NewCommentFeedAction(page *rod.Page) *CommentFeedAction {
+	return &CommentFeedAction{page: page}
+}
+
+// PostComment 发表评论到 Feed
+func (f *CommentFeedAction) PostComment(ctx context.Context, feedID, xsecToken, content string) error {
+	page := f.page.Context(ctx).Timeout(60 * time.Second)
+
+	// 构建详情页 URL
+	url := makeFeedDetailURL(feedID, xsecToken)
+
+	logrus.Infof("Opening feed detail page: %s", url)
+
+	// 导航到详情页
+	page.MustNavigate(url)
+	page.MustWaitDOMStable()
+
+	time.Sleep(1 * time.Second)
+
+	elem := page.MustElement("div.input-box div.content-edit span")
+	elem.MustClick()
+
+	elem2 := page.MustElement("div.input-box div.content-edit p.content-input")
+	elem2.MustInput(content)
+
+	time.Sleep(1 * time.Second)
+
+	submitButton := page.MustElement("div.bottom button.submit")
+	submitButton.MustClick()
+
+	time.Sleep(1 * time.Second)
+
+	return nil
+}

xiaohongshu/feed_detail.go

@@ -25,7 +25,7 @@ func (f *FeedDetailAction) GetFeedDetail(ctx context.Context, feedID, xsecToken
 	page := f.page.Context(ctx).Timeout(60 * time.Second)
 
 	// 构建详情页 URL
-	url := fmt.Sprintf("https://www.xiaohongshu.com/explore/%s?xsec_token=%s&xsec_source=pc_feed", feedID, xsecToken)
+	url := makeFeedDetailURL(feedID, xsecToken)
 
 	// 导航到详情页
 	page.MustNavigate(url)
@@ -75,3 +75,7 @@ func (f *FeedDetailAction) GetFeedDetail(ctx context.Context, feedID, xsecToken
 		Comments: noteDetail.Comments,
 	}, nil
 }
+
+func makeFeedDetailURL(feedID, xsecToken string) string {
+	return fmt.Sprintf("https://www.xiaohongshu.com/explore/%s?xsec_token=%s&xsec_source=pc_feed", feedID, xsecToken)
+}