agent-file-tools 0.45.0

use std::fs;

use crate::bash_background::output::RUNNING_OUTPUT_PREVIEW_BYTES;
use crate::bash_background::persistence::BgMode;
use crate::bash_background::registry::BgTaskSnapshot;
use crate::context::AppContext;
use crate::protocol::{RawRequest, Response};
use serde::Deserialize;
use serde_json::json;

const PREVIEW_BYTES: usize = RUNNING_OUTPUT_PREVIEW_BYTES;

#[derive(Debug, Deserialize)]
struct BashStatusParams {
    #[serde(default)]
    task_id: Option<String>,
    #[serde(default)]
    output_mode: Option<String>,
}

pub fn handle(req: &RawRequest, ctx: &AppContext) -> Response {
    let raw_params = req
        .params
        .get("params")
        .cloned()
        .unwrap_or_else(|| req.params.clone());
    let params = match serde_json::from_value::<BashStatusParams>(raw_params) {
        Ok(params) => params,
        Err(e) => {
            return Response::error(
                &req.id,
                "invalid_request",
                format!("bash_status: invalid params: {e}"),
            );
        }
    };

    let output_mode = params.output_mode.clone();
    let Some(task_id) = params.task_id else {
        return Response::error(&req.id, "invalid_request", "bash_status: missing task_id");
    };

    if let Some(output_mode) = output_mode.as_deref() {
        if !matches!(output_mode, "screen" | "raw" | "both") {
            return Response::error(
                &req.id,
                "invalid_request",
                "bash_status: output_mode must be one of screen, raw, or both",
            );
        }
    }

    let storage_dir = crate::bash_background::storage_dir(ctx.config().storage_dir.as_deref());
    match ctx.bash_background().status(
        &task_id,
        req.session(),
        ctx.config().project_root.as_deref(),
        Some(&storage_dir),
        PREVIEW_BYTES,
    ) {
        Some(mut snapshot) => {
            maybe_render_pty_screen(&mut snapshot, output_mode.as_deref());
            Response::success(&req.id, json!(snapshot))
        }
        None => Response::error(
            &req.id,
            "task_not_found",
            format!("background task not found: {task_id}"),
        ),
    }
}

fn maybe_render_pty_screen(snapshot: &mut BgTaskSnapshot, output_mode: Option<&str>) {
    if snapshot.info.mode != BgMode::Pty || matches!(output_mode, Some("raw")) {
        return;
    }
    let Some(output_path) = snapshot.output_path.as_deref() else {
        return;
    };
    match fs::read(output_path) {
        Ok(raw) => {
            let rows = snapshot.pty_rows.unwrap_or(24);
            let cols = snapshot.pty_cols.unwrap_or(80);
            snapshot.pty_screen = Some(crate::pty_render::render_screen(&raw, rows, cols));
        }
        Err(error) => {
            snapshot.pty_screen = Some(format!(
                "[PTY screen unavailable: failed to read raw output: {error}]"
            ));
        }
    }
}