1use std::io::{self, Write};
2
3use serde_json::json;
4
5use super::OutputRenderer;
6
7pub struct JsonRenderer;
8
9impl JsonRenderer {
10 pub fn new() -> Self {
11 Self
12 }
13
14 fn emit(&self, value: serde_json::Value) {
15 let line = serde_json::to_string(&value).expect("failed to serialize JSON output");
16 println!("{line}");
17 let _ = io::stdout().flush();
18 }
19}
20
21impl Default for JsonRenderer {
22 fn default() -> Self {
23 Self::new()
24 }
25}
26
27impl OutputRenderer for JsonRenderer {
28 fn text_chunk(&mut self, text: &str) {
29 self.emit(json!({"type": "text", "content": text}));
30 }
31
32 fn tool_status(&mut self, tool: &str) {
33 self.emit(json!({"type": "tool", "name": tool}));
34 }
35
36 fn permission_denied(&mut self, tool: &str) {
37 self.emit(json!({"type": "error", "message": format!("permission denied: {tool}")}));
38 }
39
40 fn error(&mut self, err: &str) {
41 self.emit(json!({"type": "error", "message": err}));
42 }
43
44 fn session_info(&mut self, id: &str) {
45 self.emit(json!({"type": "session", "sessionId": id}));
46 }
47
48 fn done(&mut self) {
49 self.emit(json!({"type": "done"}));
50 }
51}