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// installed by dingger
// managed by dingger; reinstalling or updating the integration overwrites this file.
// add custom hooks/plugins beside this file instead of editing it.
import net from "node:net";
// The dingger hook receiver listens here; override with DINGGER_AGENT_SOCKET.
const socketPath =
process.env.DINGGER_AGENT_SOCKET ||
`${process.env.HOME}/.local/state/dingger/agent.sock`;
// tmux sets TMUX_PANE in the environment of every process it starts in a
// pane, so it names exactly the pane this pi runs in. (Asking tmux for "the
// current pane" is wrong: that is the session's active pane, not ours.)
const paneId = process.env.DINGGER_PANE_ID || process.env.TMUX_PANE;
const source = "dingger:pi";
function enabled() {
return !!paneId;
}
function sendRequestAttempt(request: unknown, timeoutMs: number): Promise<boolean> {
if (!enabled()) {
return Promise.resolve(true);
}
return new Promise((resolve) => {
let done = false;
let timeout: ReturnType<typeof setTimeout> | undefined;
const finish = (delivered: boolean) => {
if (done) return;
done = true;
if (timeout) {
clearTimeout(timeout);
}
socket.destroy();
resolve(delivered);
};
const socket = net.createConnection(socketPath);
socket.on("error", () => finish(false));
socket.on("connect", () => socket.write(`${JSON.stringify(request)}\n`));
socket.on("data", () => finish(true));
socket.on("end", () => finish(false));
timeout = setTimeout(() => finish(false), timeoutMs);
timeout.unref?.();
});
}
async function sendRequest(request: unknown): Promise<void> {
if (await sendRequestAttempt(request, 500)) {
return;
}
await sendRequestAttempt(request, 1500);
}
type AgentState = "working" | "blocked" | "idle";
function report(state: AgentState, message?: string): Promise<void> {
return sendRequest({
id: `${source}:${Date.now()}:${Math.random().toString(36).slice(2)}`,
method: "pane.report_agent",
params: {
pane_id: paneId!,
source,
agent: "pi",
state,
message,
seq: Date.now() * 1000,
},
});
}
let sendInFlight = false;
let queuedState: { state: AgentState; message?: string } | undefined;
function queueState(state: AgentState, message?: string): void {
queuedState = { state, message };
if (!sendInFlight) {
void drainStateQueue();
}
}
async function drainStateQueue(): Promise<void> {
if (sendInFlight) {
return;
}
sendInFlight = true;
try {
while (queuedState) {
const next = queuedState;
queuedState = undefined;
await report(next.state, next.message);
}
} finally {
sendInFlight = false;
if (queuedState) {
void drainStateQueue();
}
}
}
export default function (pi) {
if (!enabled()) {
return;
}
let agentActive = false;
let blockedCount = 0;
let blockedMessage: string | undefined;
let lastState: AgentState | undefined;
let lastMessage: string | undefined;
function desiredState() {
if (blockedCount > 0) {
return { state: "blocked" as const, message: blockedMessage };
}
if (agentActive) {
return { state: "working" as const, message: undefined };
}
return { state: "idle" as const, message: undefined };
}
function publishState(force = false) {
const next = desiredState();
if (!force && next.state === lastState && next.message === lastMessage) {
return;
}
lastState = next.state;
lastMessage = next.message;
queueState(next.state, next.message);
}
pi.events.on("blocked", (data) => {
if (!data?.active) {
blockedCount = Math.max(0, blockedCount - 1);
if (blockedCount === 0) {
blockedMessage = undefined;
}
publishState();
return;
}
blockedCount += 1;
blockedMessage = data.label;
publishState();
});
pi.on("session_start", async (event, ctx) => {
// TUI only: RPC/JSON/print modes are headless.
if (ctx?.mode !== "tui") {
return;
}
// A reload can replace this extension mid-run without emitting another agent_start.
agentActive = ctx?.isIdle?.() === false;
publishState(true);
});
pi.on("agent_start", (_event, ctx) => {
agentActive = true;
publishState();
});
pi.on("agent_settled", (_event, ctx) => {
if (ctx?.isIdle?.() !== true) {
return;
}
agentActive = false;
publishState();
});
}
|
