Add configurable Pi Web data directory

README.md

@@ -220,10 +220,12 @@ Environment variables:
 
 - `PI_WEB_PORT` / `PORT` — web server port. Defaults to `8504`.
 - `PI_WEB_HOST` — web server bind host. Defaults to `127.0.0.1`.
-- `PI_WEB_SESSIOND_SOCKET` — Unix socket path used by both the daemon and web process when `PI_WEB_SESSIOND_URL` is not set. Defaults to `~/.pi-web/sessiond.sock`.
+- `PI_WEB_DATA_DIR` — Pi Web data directory. Defaults to `~/.pi-web`.
+- `PI_WEB_SESSIOND_SOCKET` — Unix socket path used by both the daemon and web process when `PI_WEB_SESSIOND_URL` is not set. Defaults to `$PI_WEB_DATA_DIR/sessiond.sock`.
 - `PI_WEB_SESSIOND_PORT` — optional TCP port for the daemon. If unset, the daemon listens on the Unix socket instead.
 - `PI_WEB_SESSIOND_HOST` — daemon TCP bind host when `PI_WEB_SESSIOND_PORT` is set. Defaults to `127.0.0.1`.
 - `PI_WEB_SESSIOND_URL` — daemon URL used by the web process when connecting over TCP, for example `http://127.0.0.1:3001`. If you set `PI_WEB_SESSIOND_PORT`, set this for the web process too.
+- `PI_WEB_PROJECTS_FILE` — optional override for the projects storage JSON file. Defaults to `$PI_WEB_DATA_DIR/projects.json`.
 
 ## systemd user services
 

src/config.ts

@@ -24,6 +24,16 @@ export function defaultPiWebConfigPath(env: NodeJS.ProcessEnv = process.env): st
   return join(xdgConfigHome !== undefined && xdgConfigHome !== "" ? xdgConfigHome : join(homedir(), ".config"), "pi-web", "config.json");
 }
 
+export function defaultPiWebDataDir(): string {
+  return join(homedir(), ".pi-web");
+}
+
+export function piWebDataDir(env: NodeJS.ProcessEnv = process.env, cwd = process.cwd()): string {
+  const configured = env["PI_WEB_DATA_DIR"];
+  if (configured === undefined || configured === "") return defaultPiWebDataDir();
+  return resolve(cwd, configured);
+}
+
 export function piWebConfigPath(env: NodeJS.ProcessEnv = process.env, cwd = process.cwd()): string {
   const configured = env["PI_WEB_CONFIG"];
   if (configured === undefined || configured === "") return defaultPiWebConfigPath(env);

src/server/sessiond/config.ts

@@ -1,8 +1,8 @@
-import { homedir } from "node:os";
 import { join } from "node:path";
+import { piWebDataDir } from "../../config.js";
 
 export function sessiondSocketPath(): string {
-  return process.env["PI_WEB_SESSIOND_SOCKET"] ?? join(homedir(), ".pi-web", "sessiond.sock");
+  return process.env["PI_WEB_SESSIOND_SOCKET"] ?? join(piWebDataDir(), "sessiond.sock");
 }
 
 export function sessiondHttpUrl(): string | undefined {

src/server/storage/projectStore.test.ts

@@ -0,0 +1,13 @@
+import { join } from "node:path";
+import { describe, expect, it } from "vitest";
+import { projectStorePath } from "./projectStore.js";
+
+describe("projectStorePath", () => {
+  it("uses PI_WEB_DATA_DIR by default", () => {
+    expect(projectStorePath({ PI_WEB_DATA_DIR: "demo-data" }, "/tmp/pi-web")).toBe(join("/tmp/pi-web", "demo-data", "projects.json"));
+  });
+
+  it("uses PI_WEB_PROJECTS_FILE when configured", () => {
+    expect(projectStorePath({ PI_WEB_PROJECTS_FILE: "demo/projects.json" }, "/tmp/pi-web")).toBe(join("/tmp/pi-web", "demo/projects.json"));
+  });
+});

src/server/storage/projectStore.ts

@@ -1,6 +1,6 @@
 import { mkdir, readFile, writeFile } from "node:fs/promises";
-import { dirname, join } from "node:path";
+import { dirname, join, resolve } from "node:path";
-import { homedir } from "node:os";
+import { piWebDataDir } from "../../config.js";
 import { randomUUID } from "node:crypto";
 import type { Project } from "../types.js";
 
@@ -31,8 +31,18 @@ function isRecord(value: unknown): value is Record<string, unknown> {
   return typeof value === "object" && value !== null;
 }
 
+export function defaultProjectStorePath(env: NodeJS.ProcessEnv = process.env, cwd = process.cwd()): string {
+  return join(piWebDataDir(env, cwd), "projects.json");
+}
+
+export function projectStorePath(env: NodeJS.ProcessEnv = process.env, cwd = process.cwd()): string {
+  const configured = env["PI_WEB_PROJECTS_FILE"];
+  if (configured === undefined || configured === "") return defaultProjectStorePath(env, cwd);
+  return resolve(cwd, configured);
+}
+
 export class ProjectStore {
-  constructor(private readonly filePath = join(homedir(), ".pi-web", "projects.json")) {}
+  constructor(private readonly filePath = projectStorePath()) {}
 
   async list(): Promise<Project[]> {
     return (await this.read()).projects;