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|
package claude
import (
"bufio"
"encoding/json"
"os"
"strings"
)
type RawMessage struct {
Type string `json:"type"`
Message json.RawMessage `json:"message"`
}
type UserMessage struct {
Role string `json:"role"`
Content string `json:"content"`
}
type AssistantMessage struct {
Role string `json:"role"`
Content []ContentBlock `json:"content"`
}
type ContentBlock struct {
Type string `json:"type"`
Text string `json:"text,omitempty"`
Thinking string `json:"thinking,omitempty"`
Name string `json:"name,omitempty"`
Input any `json:"input,omitempty"`
}
type PreviewContent struct {
Messages []PreviewMessage
Error string
}
type PreviewMessage struct {
Role string
Content string
}
func LoadSessionPreview(session *Session, maxMessages int) PreviewContent {
if session == nil || session.FullPath == "" {
return PreviewContent{Error: "No session selected"}
}
file, openError := os.Open(session.FullPath)
if openError != nil {
return PreviewContent{Error: "Could not open session file"}
}
defer func() { _ = file.Close() }()
var messages []PreviewMessage
scanner := bufio.NewScanner(file)
scanBuffer := make([]byte, 0, 64*1024)
scanner.Buffer(scanBuffer, 10*1024*1024)
for scanner.Scan() {
line := scanner.Text()
if line == "" {
continue
}
var rawMessage RawMessage
if unmarshalError := json.Unmarshal([]byte(line), &rawMessage); unmarshalError != nil {
continue
}
parsedMessages := parseRawMessage(rawMessage)
messages = append(messages, parsedMessages...)
}
if len(messages) > maxMessages {
messages = messages[len(messages)-maxMessages:]
}
if len(messages) == 0 {
return PreviewContent{Error: "No messages in session"}
}
return PreviewContent{Messages: messages}
}
func parseRawMessage(rawMessage RawMessage) []PreviewMessage {
var result []PreviewMessage
switch rawMessage.Type {
case "user":
var userMessage UserMessage
if unmarshalError := json.Unmarshal(rawMessage.Message, &userMessage); unmarshalError != nil {
return nil
}
content := userMessage.Content
if len(content) > 500 {
content = content[:500] + " …"
}
if content != "" {
result = append(result, PreviewMessage{Role: "user", Content: content})
}
case "assistant":
var assistantMessage AssistantMessage
if unmarshalError := json.Unmarshal(rawMessage.Message, &assistantMessage); unmarshalError != nil {
return nil
}
for _, contentBlock := range assistantMessage.Content {
switch contentBlock.Type {
case "text":
text := contentBlock.Text
if len(text) > 500 {
text = text[:500] + " …"
}
if text != "" {
result = append(result, PreviewMessage{Role: "assistant", Content: text})
}
case "tool_use":
toolInfo := contentBlock.Name
if toolInfo != "" {
if inputMap, isMap := contentBlock.Input.(map[string]interface{}); isMap {
if command, exists := inputMap["command"]; exists {
if commandString, isString := command.(string); isString {
if len(commandString) > 60 {
commandString = commandString[:60] + " …"
}
toolInfo += ": " + commandString
}
} else if pattern, exists := inputMap["pattern"]; exists {
if patternString, isString := pattern.(string); isString {
toolInfo += ": " + patternString
}
} else if filePath, exists := inputMap["file_path"]; exists {
if filePathString, isString := filePath.(string); isString {
pathParts := strings.Split(filePathString, "/")
toolInfo += ": " + pathParts[len(pathParts)-1]
}
}
}
result = append(result, PreviewMessage{Role: "tool", Content: toolInfo})
}
case "thinking":
thinking := contentBlock.Thinking
if len(thinking) > 200 {
thinking = thinking[:200] + " …"
}
if thinking != "" {
result = append(result, PreviewMessage{Role: "thinking", Content: thinking})
}
}
}
}
return result
}
|