acp-cli 0.2.2

Headless CLI client for the Agent Client Protocol (ACP)
Documentation 
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use std::io::{self, Write};

use serde_json::json;

use super::OutputRenderer;

pub struct JsonRenderer;

impl JsonRenderer {
    pub fn new() -> Self {
        Self
    }

    fn emit(&self, value: serde_json::Value) {
        let line = serde_json::to_string(&value).expect("failed to serialize JSON output");
        println!("{line}");
        let _ = io::stdout().flush();
    }
}

impl Default for JsonRenderer {
    fn default() -> Self {
        Self::new()
    }
}

impl OutputRenderer for JsonRenderer {
    fn text_chunk(&mut self, text: &str) {
        self.emit(json!({"type": "text", "content": text}));
    }

    fn tool_status(&mut self, tool: &str) {
        self.emit(json!({"type": "tool", "name": tool}));
    }

    fn permission_denied(&mut self, tool: &str) {
        self.emit(json!({"type": "error", "message": format!("permission denied: {tool}")}));
    }

    fn error(&mut self, err: &str) {
        self.emit(json!({"type": "error", "message": err}));
    }

    fn session_info(&mut self, id: &str) {
        self.emit(json!({"type": "session", "sessionId": id}));
    }

    fn done(&mut self) {
        self.emit(json!({"type": "done"}));
    }
}