Add worktree init CLI for isolated development instances

cli/src/commands/worktree-lib.ts

@@ -0,0 +1,172 @@
+import path from "node:path";
+import type { PaperclipConfig } from "../config/schema.js";
+import { expandHomePrefix } from "../config/home.js";
+
+export const DEFAULT_WORKTREE_HOME = "~/.paperclip-worktrees";
+
+export type WorktreeLocalPaths = {
+  cwd: string;
+  repoConfigDir: string;
+  configPath: string;
+  envPath: string;
+  homeDir: string;
+  instanceId: string;
+  instanceRoot: string;
+  contextPath: string;
+  embeddedPostgresDataDir: string;
+  backupDir: string;
+  logDir: string;
+  secretsKeyFilePath: string;
+  storageDir: string;
+};
+
+function nonEmpty(value: string | null | undefined): string | null {
+  return typeof value === "string" && value.trim().length > 0 ? value.trim() : null;
+}
+
+function isLoopbackHost(hostname: string): boolean {
+  const value = hostname.trim().toLowerCase();
+  return value === "127.0.0.1" || value === "localhost" || value === "::1";
+}
+
+export function sanitizeWorktreeInstanceId(rawValue: string): string {
+  const trimmed = rawValue.trim().toLowerCase();
+  const normalized = trimmed
+    .replace(/[^a-z0-9_-]+/g, "-")
+    .replace(/-+/g, "-")
+    .replace(/^[-_]+|[-_]+$/g, "");
+  return normalized || "worktree";
+}
+
+export function resolveSuggestedWorktreeName(cwd: string, explicitName?: string): string {
+  return nonEmpty(explicitName) ?? path.basename(path.resolve(cwd));
+}
+
+export function resolveWorktreeLocalPaths(opts: {
+  cwd: string;
+  homeDir?: string;
+  instanceId: string;
+}): WorktreeLocalPaths {
+  const cwd = path.resolve(opts.cwd);
+  const homeDir = path.resolve(expandHomePrefix(opts.homeDir ?? DEFAULT_WORKTREE_HOME));
+  const instanceRoot = path.resolve(homeDir, "instances", opts.instanceId);
+  const repoConfigDir = path.resolve(cwd, ".paperclip");
+  return {
+    cwd,
+    repoConfigDir,
+    configPath: path.resolve(repoConfigDir, "config.json"),
+    envPath: path.resolve(repoConfigDir, ".env"),
+    homeDir,
+    instanceId: opts.instanceId,
+    instanceRoot,
+    contextPath: path.resolve(homeDir, "context.json"),
+    embeddedPostgresDataDir: path.resolve(instanceRoot, "db"),
+    backupDir: path.resolve(instanceRoot, "data", "backups"),
+    logDir: path.resolve(instanceRoot, "logs"),
+    secretsKeyFilePath: path.resolve(instanceRoot, "secrets", "master.key"),
+    storageDir: path.resolve(instanceRoot, "data", "storage"),
+  };
+}
+
+export function rewriteLocalUrlPort(rawUrl: string | undefined, port: number): string | undefined {
+  if (!rawUrl) return undefined;
+  try {
+    const parsed = new URL(rawUrl);
+    if (!isLoopbackHost(parsed.hostname)) return rawUrl;
+    parsed.port = String(port);
+    return parsed.toString();
+  } catch {
+    return rawUrl;
+  }
+}
+
+export function buildWorktreeConfig(input: {
+  sourceConfig: PaperclipConfig | null;
+  paths: WorktreeLocalPaths;
+  serverPort: number;
+  databasePort: number;
+  now?: Date;
+}): PaperclipConfig {
+  const { sourceConfig, paths, serverPort, databasePort } = input;
+  const nowIso = (input.now ?? new Date()).toISOString();
+
+  const source = sourceConfig;
+  const authPublicBaseUrl = rewriteLocalUrlPort(source?.auth.publicBaseUrl, serverPort);
+
+  return {
+    $meta: {
+      version: 1,
+      updatedAt: nowIso,
+      source: "configure",
+    },
+    ...(source?.llm ? { llm: source.llm } : {}),
+    database: {
+      mode: "embedded-postgres",
+      embeddedPostgresDataDir: paths.embeddedPostgresDataDir,
+      embeddedPostgresPort: databasePort,
+      backup: {
+        enabled: source?.database.backup.enabled ?? true,
+        intervalMinutes: source?.database.backup.intervalMinutes ?? 60,
+        retentionDays: source?.database.backup.retentionDays ?? 30,
+        dir: paths.backupDir,
+      },
+    },
+    logging: {
+      mode: source?.logging.mode ?? "file",
+      logDir: paths.logDir,
+    },
+    server: {
+      deploymentMode: source?.server.deploymentMode ?? "local_trusted",
+      exposure: source?.server.exposure ?? "private",
+      host: source?.server.host ?? "127.0.0.1",
+      port: serverPort,
+      allowedHostnames: source?.server.allowedHostnames ?? [],
+      serveUi: source?.server.serveUi ?? true,
+    },
+    auth: {
+      baseUrlMode: source?.auth.baseUrlMode ?? "auto",
+      ...(authPublicBaseUrl ? { publicBaseUrl: authPublicBaseUrl } : {}),
+      disableSignUp: source?.auth.disableSignUp ?? false,
+    },
+    storage: {
+      provider: source?.storage.provider ?? "local_disk",
+      localDisk: {
+        baseDir: paths.storageDir,
+      },
+      s3: {
+        bucket: source?.storage.s3.bucket ?? "paperclip",
+        region: source?.storage.s3.region ?? "us-east-1",
+        endpoint: source?.storage.s3.endpoint,
+        prefix: source?.storage.s3.prefix ?? "",
+        forcePathStyle: source?.storage.s3.forcePathStyle ?? false,
+      },
+    },
+    secrets: {
+      provider: source?.secrets.provider ?? "local_encrypted",
+      strictMode: source?.secrets.strictMode ?? false,
+      localEncrypted: {
+        keyFilePath: paths.secretsKeyFilePath,
+      },
+    },
+  };
+}
+
+export function buildWorktreeEnvEntries(paths: WorktreeLocalPaths): Record<string, string> {
+  return {
+    PAPERCLIP_HOME: paths.homeDir,
+    PAPERCLIP_INSTANCE_ID: paths.instanceId,
+    PAPERCLIP_CONFIG: paths.configPath,
+    PAPERCLIP_CONTEXT: paths.contextPath,
+  };
+}
+
+function shellEscape(value: string): string {
+  return `'${value.replaceAll("'", `'\"'\"'`)}'`;
+}
+
+export function formatShellExports(entries: Record<string, string>): string {
+  return Object.entries(entries)
+    .filter(([, value]) => typeof value === "string" && value.trim().length > 0)
+    .map(([key, value]) => `export ${key}=${shellEscape(value)}`)
+    .join("\n");
+}