Lap Tran
4c6e85c97c
Point fm at the isolated oc2 wrapper, upgrade Homebrew packages on rebuild, and declare ffmpeg, docker-desktop, puremac, utm, node, and tea. Update nixpkgs, home-manager, and nix-homebrew locks. Track Pi agent config, crew-dispatch, and the Gitea PR helper that home.nix already expected.
78 lines
2.6 KiB
TypeScript
78 lines
2.6 KiB
TypeScript
// Pi Calm - persisted on/off preference.
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//
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// Copyright (c) 2026 Kun Chen. MIT License - see the LICENSE file in this directory.
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//
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// The preference lives in a plain local state file named "calm" directly under
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// Pi's agent directory (~/.pi/agent by default, PI_CODING_AGENT_DIR when set).
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// That directory is Pi runtime territory: this repository never tracks the
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// state file and Home Manager never manages it. The file contains exactly
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// "on\n" or "off\n"; anything else, including a missing or unreadable file,
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// means off.
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import { randomUUID } from "node:crypto";
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import {
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mkdirSync,
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readFileSync,
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renameSync,
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rmSync,
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writeFileSync,
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} from "node:fs";
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import { homedir } from "node:os";
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import { dirname, join } from "node:path";
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import * as PiCodingAgent from "@earendil-works/pi-coding-agent";
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export const CALM_PREFERENCE_FILE_NAME = "calm";
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/**
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* Resolve Pi's agent directory through Pi's exported getAgentDir(), which
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* honors PI_CODING_AGENT_DIR and tilde expansion. If a future Pi stops
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* exporting it, fall back to the documented environment variable and default
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* path instead of failing.
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*/
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export function calmAgentDir(): string {
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if (typeof PiCodingAgent.getAgentDir === "function") return PiCodingAgent.getAgentDir();
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const envDir = process.env.PI_CODING_AGENT_DIR?.trim();
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if (envDir) return envDir;
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return join(homedir(), ".pi", "agent");
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}
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export function calmPreferencePath(): string {
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return join(calmAgentDir(), CALM_PREFERENCE_FILE_NAME);
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}
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/** Load the persisted preference. Calm is off by default and on any read error. */
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export function loadCalmPreference(): boolean {
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try {
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return readFileSync(calmPreferencePath(), "utf8").trim() === "on";
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} catch {
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return false;
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}
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}
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/**
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* Persist the preference atomically (unique temp file plus rename) so a
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* crashed write never leaves a truncated state file. A failure throws a clear
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* error naming the path so /calm can surface it instead of silently applying
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* a toggle that would not survive a restart.
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*/
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export function persistCalmPreference(active: boolean): void {
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const path = calmPreferencePath();
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try {
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mkdirSync(dirname(path), { recursive: true });
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const temporaryPath = `${path}.${process.pid}.${randomUUID()}.tmp`;
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try {
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writeFileSync(temporaryPath, active ? "on\n" : "off\n", {
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encoding: "utf8",
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flag: "wx",
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mode: 0o600,
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});
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renameSync(temporaryPath, path);
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} finally {
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rmSync(temporaryPath, { force: true });
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}
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} catch (error) {
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const reason = error instanceof Error ? error.message : String(error);
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throw new Error(`Pi Calm could not persist its preference to ${path}: ${reason}`);
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}
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}
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