feat: 支持CozeV3

relay/model/message.go

@@ -1,5 +1,7 @@
 package model
 
+import "encoding/json"
+
 type Message struct {
 	Role       string  `json:"role,omitempty"`
 	Content    any     `json:"content,omitempty"`
@@ -37,6 +39,53 @@ func (m Message) StringContent() string {
 	return ""
 }
 
+func (m Message) CozeV3StringContent() string {
+	content, ok := m.Content.(string)
+	if ok {
+		return content
+	}
+	contentList, ok := m.Content.([]any)
+	if ok {
+		contents := make([]map[string]any, 0)
+		var contentStr string
+		for _, contentItem := range contentList {
+			contentMap, ok := contentItem.(map[string]any)
+			if !ok {
+				continue
+			}
+			switch contentMap["type"] {
+			case "text":
+				if subStr, ok := contentMap["text"].(string); ok {
+					contents = append(contents, map[string]any{
+						"type": "text",
+						"text": subStr,
+					})
+				}
+			case "image_url":
+				if subStr, ok := contentMap["image_url"].(string); ok {
+					contents = append(contents, map[string]any{
+						"type":     "image",
+						"file_url": subStr,
+					})
+				}
+			case "file":
+				if subStr, ok := contentMap["image_url"].(string); ok {
+					contents = append(contents, map[string]any{
+						"type":     "file",
+						"file_url": subStr,
+					})
+				}
+			}
+		}
+		if len(contents) > 0 {
+			b, _ := json.Marshal(contents)
+			return string(b)
+		}
+		return contentStr
+	}
+	return ""
+}
+
 func (m Message) ParseContent() []MessageContent {
 	var contentList []MessageContent
 	content, ok := m.Content.(string)