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feat(git-sync): vendor IO engine (pull/push/git/settings) with GitSyncClient seam (Phase A.3)

Browse Source 
Vendor the IO engine from docmost-sync into packages/git-sync/src/engine:
- git.ts (VaultGit, execFile shell-out — verbatim)
- pull.ts (readExisting, computePullActions, applyPullActions)
- push.ts (classifyRenameMoves, computePushActions, applyPushActions, runPush)
- settings.ts adapted (pure parseSettings + Settings type; no process.env binding
  — the server builds Settings from EnvironmentService later), config-errors.ts.
CLI main()/import.meta entrypoints dropped (server drives in-process).

Client seam: new engine/client.types.ts defines GitSyncClient; pull.ts/push.ts
now use Pick<GitSyncClient, ...> instead of the non-vendored DocmostClient. Engine
logic byte-identical except a zod4-compat fix in config-errors (zod4 dropped the
issue.received==='undefined' signal; match /received undefined/ on the message).

Ported the engine unit tests (compute/apply pull+push actions, classify-rename-
moves, run-push, settings, config-errors) incl. real-git temp-repo tests: 431
pass / 3 expected-fail (was 314/3). REST/CLI-coupled upstream tests skipped
(noted). CJS build clean. No apps/server wiring yet (next step).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
claude code agent 227
2026-06-21 14:39:38 +03:00
parent b0cd4bd6cf
commit 70bd0dba4d
32 changed files with 6222 additions and 2728 deletions
Download Patch File Download Diff File Expand all files Collapse all files

132
packages/git-sync/src/engine/client.types.ts Normal file
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/**
* The client seam (plan §3.1). Upstream `pull.ts`/`push.ts` reached into the
* REST `DocmostClient` from the `docmost-client` package via `Pick<DocmostClient,
* ...>` subsets. That package is NOT vendored here (the gitmost server writes
* NATIVELY — through repositories + collab `openDirectConnection`, plan §3.2/§3.3),
* so the engine must depend on a narrow STRUCTURAL interface instead.
*
* `GitSyncClient` is that interface: the native datasource (server side, a later
* step) implements it, and the vendored engine only ever uses `Pick<GitSyncClient,
* ...>` subsets of it. The signatures below MIRROR exactly the methods the
* vendored `pull.ts`/`push.ts` actually call (arg shapes + the fields the engine
* reads off each result) — verified against the upstream `DocmostClient`
* (packages/docmost-client/src/client.ts) so a real REST client is still
* structurally assignable, and so the native adapter has a precise contract.
*/
/**
* A page node as returned by `listSpaceTree` (the sidebar/tree walk, no body).
* The engine layout (`buildVaultLayout`) consumes `PageNode` from `./layout`,
* which only requires `id` (+ optional `title`/`slugId`/`parentPageId`); this
* lite shape documents the fields the tree walk surfaces. Upstream nodes also
* carry `position`, `icon`, `hasChildren` — kept open via the index signature.
*/
export interface GitSyncPageNodeLite {
id: string;
slugId?: string;
title?: string;
parentPageId?: string | null;
hasChildren?: boolean;
/** Upstream `listSpaceTree` nodes carry extra fields (position, icon, …). */
[key: string]: unknown;
}
/**
* The structural client the engine depends on. Only `Pick<GitSyncClient, ...>`
* subsets are ever used:
* - pull reads: `getPageJson` (+ the tree walk's `listSpaceTree`),
* - push writes: `importPageMarkdown` / `createPage` / `deletePage` /
* `movePage` / `renamePage`,
* - continuous (phase B+): `listRecentSince` / `listTrash` / `restorePage`.
*/
export interface GitSyncClient {
// --- reads (pull) ---------------------------------------------------------
/**
* Full tree of page nodes for the space (or the subtree rooted at
* `rootPageId`), each WITHOUT body content. `complete` is `false` when the
* walk was truncated / a fetch failed — the pull side suppresses absence
* deletions on an incomplete tree (SPEC §8). Native impl returns
* `complete: true` always (reads the DB, not a paginated REST endpoint).
*/
listSpaceTree(
spaceId: string,
rootPageId?: string,
): Promise<{ pages: GitSyncPageNodeLite[]; complete: boolean }>;
/**
* One page WITH its ProseMirror body content. `applyPullActions` reads
* `id`, `slugId`, `title`, `parentPageId`, `spaceId` (for the file meta) and
* `content` (to stabilize/serialize). `updatedAt` is carried for the
* poll-suppression loop-guard.
*/
getPageJson(pageId: string): Promise<{
id: string;
slugId: string;
title: string;
parentPageId: string | null;
spaceId: string;
updatedAt: string;
content: unknown;
}>;
// --- writes (push) --------------------------------------------------------
/**
* Replace a page's body from a self-contained markdown file (meta + body).
* The collab/Yjs write path (SPEC §2/§15.6) — never a raw jsonb overwrite.
* `applyPushActions` reads only an optional `updatedAt` off the result
* (via `extractUpdatedAt`, tolerant of extra fields).
*/
importPageMarkdown(
pageId: string,
fullMarkdown: string,
): Promise<{ updatedAt?: string; [key: string]: unknown }>;
/**
* Create a new page and return the assigned id at `data.id`
* (`applyPushActions` reads `result.data.id`, then writes it back into the
* file's meta). An optional top-level/`data.updatedAt` feeds the loop-guard.
*/
createPage(
title: string,
content: string,
spaceId: string,
parentPageId?: string,
): Promise<{ data: { id: string }; updatedAt?: string; [key: string]: unknown }>;
/** Soft-delete a page to Trash (SPEC §8). Result is not inspected. */
deletePage(pageId: string): Promise<unknown>;
/**
* Reparent a page (and optionally set its fractional-index `position`). The
* engine passes `position` UNDEFINED for now; the native impl computes a
* default between siblings (plan §3.2). Result is not inspected.
*/
movePage(
pageId: string,
parentPageId: string | null,
position?: string,
): Promise<unknown>;
/** Change a page's title only (no body touch). Result is not inspected. */
renamePage(pageId: string, title: string): Promise<unknown>;
// --- continuous (phase B+) ------------------------------------------------
/**
* Pages updated since `sinceIso` (the poll-safety reconciliation, SPEC §8).
* `spaceId` may be undefined (all spaces); `hardPageCap` bounds the walk.
*/
listRecentSince(
spaceId: string | undefined,
sinceIso: string | null,
hardPageCap?: number,
): Promise<unknown[]>;
/** List soft-deleted (trashed) pages for the space (deletion detection). */
listTrash(spaceId: string): Promise<unknown[]>;
/** Restore a soft-deleted page from Trash. Result is not inspected. */
restorePage(pageId: string): Promise<unknown>;
}

46
packages/git-sync/src/engine/config-errors.ts Normal file
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import { ZodError } from 'zod';
// Turn a ZodError from settings validation into a clear, actionable startup
// message that names the offending env var(s), then exit(1) — no raw stack
// trace. Mirrors the Python new-project skeleton's load_settings_or_exit.
// A non-ZodError is left to propagate unchanged.
export function loadSettingsOrExit<T>(factory: () => T): T {
try {
return factory();
} catch (err) {
if (!(err instanceof ZodError)) throw err;
const missing: string[] = [];
const invalid: string[] = [];
for (const issue of err.issues) {
const name = issue.path.length ? String(issue.path[0]) : '?';
// A missing required variable surfaces as an `invalid_type` issue whose
// received value was `undefined`. zod 3 exposed `issue.received` directly;
// zod 4 dropped that field and instead folds it into the message
// ("expected string, received undefined"). Detect both shapes so the
// missing-vs-invalid split holds across zod majors. NOTE: an invalid (but
// present) value uses a different code (invalid_format / invalid_value) or
// an `invalid_type` message that reports a non-undefined received (e.g.
// "received NaN" from a coerced number), so neither is misread as missing.
const i = issue as { received?: unknown; message?: string };
const isMissing =
issue.code === 'invalid_type' &&
(i.received === 'undefined' ||
/received undefined/i.test(i.message ?? ''));
if (isMissing) missing.push(name);
else invalid.push(`${name}: ${issue.message}`);
}
const lines = ['Configuration error in environment / .env:'];
if (missing.length) {
lines.push(' Missing required variable(s):');
for (const n of [...new Set(missing)]) lines.push(` - ${n}`);
}
if (invalid.length) {
lines.push(' Invalid value(s):');
for (const item of invalid) lines.push(` - ${item}`);
}
lines.push('');
lines.push('Set them in .env (see .env.example) and try again.');
process.stderr.write(lines.join('\n') + '\n');
process.exit(1);
}
}

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packages/git-sync/src/engine/git.ts Normal file
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/**
* Thin async wrapper over the system `git` binary (SPEC §5: state store = git).
*
* IMPORTANT — VAULT-SCOPED: every operation here runs with `cwd = vaultPath`,
* which is the vault's OWN git repository (default `data/vault`), SEPARATE from
* the docmost-sync source repo. This module MUST NEVER run git against the
* source repo. `data/` is gitignored by the source repo, so a nested repo under
* `data/vault` is safe. The pull cycle is READ-ONLY toward Docmost; this module
* only touches the local vault git, never a git remote (push is deferred, see
* SPEC §7).
*
* Implementation notes:
* - We shell out via `node:child_process` `execFile` (promisified), passing
* ARGS AS AN ARRAY — no shell, so there is no command injection surface even
* if a page title / branch name contains shell metacharacters.
* - EVERY git invocation funnels through the single `runRaw` primitive, which
* ALWAYS prepends `--no-pager -c core.quotepath=false` to the argv (so git
* never blocks on a pager and always prints verbatim UTF-8 paths). There is
* no exception — even the `git --version` preflight goes through `runRaw`.
* - "nothing to commit" is treated as a graceful no-op, not an error.
*/
import { execFile } from "node:child_process";
import { mkdir } from "node:fs/promises";
import { promisify } from "node:util";
const execFileAsync = promisify(execFile);
/** Bot identity used for engine-authored vault commits (SPEC §7.3). */
export const BOT_AUTHOR_NAME = "Docmost Sync";
export const BOT_AUTHOR_EMAIL = "docmost-sync@local";
/** Default branch the vault repo is initialized on. */
export const DEFAULT_BRANCH = "main";
/**
* One row of `git diff --name-status` (SPEC §6 "ФС → Docmost"). `status` is the
* single-letter change code (`-M` rename detection on), `path` is the (new) file
* path; for a rename/copy (`R`/`C`) `oldPath` is the source and `path` is the
* destination, with `score` carrying git's similarity index (0–100).
*/
export interface DiffEntry {
status: "A" | "M" | "D" | "R" | "C";
/** New (destination) path. For A/M/D it is the only path. */
path: string;
/** Source path — present only for R/C. */
oldPath?: string;
/** Rename/copy similarity score (0–100) — present only for R/C. */
score?: number;
}
/** Result of a `merge`: whether it succeeded cleanly or left conflict markers. */
export interface MergeResult {
/** True when the merge applied cleanly (fast-forward or clean 3-way). */
ok: boolean;
/** True when the merge stopped on conflicts (markers left in the worktree). */
conflict: boolean;
/** Raw combined stdout+stderr, for logging/diagnostics. */
output: string;
}
/** Options for an engine-authored commit (provenance, SPEC §7.3). */
export interface CommitOptions {
authorName: string;
authorEmail: string;
/**
* Trailer lines appended to the commit message body (e.g.
* `Docmost-Sync-Source: docmost`). These are the machine-readable provenance
* the loop-guard keys on (SPEC §12, "commit-attribution").
*/
trailers?: string[];
}
/**
* A git wrapper bound to a single vault path. Construct once per vault; every
* method runs git with `cwd = vaultPath`.
*/
export class VaultGit {
constructor(private readonly vaultPath: string) {}
/**
* Preflight: verify a runnable `git` binary is on PATH. The daemon shells out
* to system `git` for every vault operation, so a missing binary (e.g. a slim
* container image without git) must fail fast with an actionable message
* rather than a cryptic ENOENT deep inside the first real git call. Presence
* check only — we do NOT gate on a specific version. Runs `git --version`
* with NO `cwd` (the vault dir may not exist yet at preflight time).
*/
async assertGitAvailable(): Promise<void> {
// Goes through the single `runRaw` primitive like every other invocation.
// `cwd: null` means "do not set a cwd" — the vault dir may not exist yet at
// preflight time, so we must not point git at a missing directory.
const r = await this.runRaw(["--version"], { cwd: null });
if (r.code !== 0) {
const detail = (r.stderr || r.stdout || "").trim();
throw new Error(
"git binary not found or not runnable — install git (the vault state " +
`store requires it). Underlying error: ${detail}`,
);
}
}
/**
* Run a git command in the vault and return trimmed stdout. THIN wrapper over
* the single `runRaw` primitive: throws a clear, unified Error (including
* stderr/stdout) on a non-zero exit.
*/
private async run(
args: string[],
opts?: { cwd?: string | null; env?: Record<string, string> },
): Promise<string> {
const r = await this.runRaw(args, opts);
if (r.code !== 0) {
const detail = (r.stderr || r.stdout || "").trim();
throw new Error(`git ${args.join(" ")} failed: ${detail}`);
}
return r.stdout.trim();
}
/**
* The ONE primitive every git invocation in this module flows through. Builds
* the full argv (`--no-pager -c core.quotepath=false <args>`), env, cwd, and
* maxBuffer, runs git, and NEVER throws — it returns the exit info so callers
* can treat a non-zero exit as either an error (`run`) or a meaningful state
* (e.g. a merge conflict, a porcelain diff that "fails" deliberately).
*
* - argv: ALWAYS prepends `--no-pager -c core.quotepath=false`, so git never
* blocks on a pager and always prints verbatim UTF-8 paths (no octal
* escaping/quoting). `quotepath=false` is the baseline for ALL path-
* printing commands (ls-files, diff --name-only, …).
* - cwd: `opts.cwd === null` -> do NOT set cwd (the preflight, where the
* vault dir may not exist); otherwise `opts.cwd ?? this.vaultPath`.
* - env: `vaultGitEnv(opts?.env)` (cwd-isolation + caller extras).
* - On a spawn/exec error we capture the error `message` too, so a failure
* before git could write to stderr (e.g. ENOENT) is NOT lost.
*/
private async runRaw(
args: string[],
opts?: { cwd?: string | null; env?: Record<string, string> },
): Promise<{ code: number; stdout: string; stderr: string }> {
const cwd = opts?.cwd === null ? undefined : (opts?.cwd ?? this.vaultPath);
try {
const { stdout, stderr } = await execFileAsync(
"git",
["--no-pager", "-c", "core.quotepath=false", ...args],
{
// Generous buffer: file listings / porcelain output on a large vault
// can be sizable.
...(cwd !== undefined ? { cwd } : {}),
maxBuffer: 64 * 1024 * 1024,
env: vaultGitEnv(opts?.env),
},
);
return { code: 0, stdout, stderr };
} catch (err: unknown) {
const e = err as {
code?: number;
stdout?: string;
stderr?: string;
message?: string;
};
return {
code: typeof e.code === "number" ? e.code : 1,
stdout: e.stdout ?? "",
// Preserve the error message when there is no stderr (e.g. a spawn
// failure like ENOENT, where promisified execFile sets stderr to an
// EMPTY STRING — so `||`, not `??`, to fall through to `message`).
stderr: e.stderr || e.message || "",
};
}
}
/**
* Ensure the vault directory exists and is an initialized git repo on `main`
* with an initial (empty) commit so branches exist. Idempotent: safe to call
* on every run. Sets a LOCAL bot identity for the vault repo if none is set
* (so engine commits never fall back to a global/unset identity).
*/
async ensureRepo(): Promise<void> {
await mkdir(this.vaultPath, { recursive: true });
if (!(await this.isRepo())) {
// `git init -b main` sets the initial branch on modern git; we still
// guard the branch name below for safety on older binaries.
await this.run(["init", "-b", DEFAULT_BRANCH]);
}
// Set a local identity for the vault repo if unset, so engine commits have
// a deterministic committer even on a machine with no global git config.
if (!(await this.hasLocalConfig("user.name"))) {
await this.run(["config", "user.name", BOT_AUTHOR_NAME]);
}
if (!(await this.hasLocalConfig("user.email"))) {
await this.run(["config", "user.email", BOT_AUTHOR_EMAIL]);
}
// Neutralize correctness-affecting git config in the vault's LOCAL config so
// a user's GLOBAL/system config cannot change porcelain BEHAVIOR (not just
// output) and corrupt the vault. The vault is OUR dedicated repo, so LOCAL
// values (which override global/system) are the right scope. Set
// UNCONDITIONALLY every run — idempotent and cheap; `git config <key>`
// writes to `--local` by default inside the repo. These MUST be in place
// before any add/commit/checkout that could be affected, hence they run
// before the initial-commit block below.
// - core.autocrlf=false — CRITICAL (SPEC §11): a global core.autocrlf=true
// would rewrite LF<->CRLF on add/checkout, making our deterministic,
// byte-stable markdown churn and breaking the round-trip invariant.
// `false` guarantees git stores/checks out verbatim bytes.
// - core.safecrlf=false — avoid CRLF-related warnings/aborts on add.
// - commit.gpgsign=false — the headless daemon must never try to GPG-sign
// a commit (would fail/hang; we already set GIT_TERMINAL_PROMPT=0).
// - core.attributesFile=/dev/null — neutralize the user's GLOBAL
// gitattributes so a global clean/smudge filter (filter.<name>.clean)
// cannot rewrite the STORED blob and break §11 byte-stability (a config
// that core.autocrlf=false does not cover). POSIX-only path, which is
// fine: the daemon runs on Linux (Docker) / macOS. A system
// /etc/gitattributes remains the host admin's domain (out of scope).
// NOTE: these stay PERSISTED LOCAL config (not `-c` flags) on purpose — a
// human running git by hand in the vault must inherit the same neutralized
// behavior; a transient `-c` would not persist. (core.quotepath, by
// contrast, only affects OUR parsing of output and so is baked into the
// `runRaw` argv baseline instead.)
try {
await this.run(["config", "core.autocrlf", "false"]);
await this.run(["config", "core.safecrlf", "false"]);
await this.run(["config", "commit.gpgsign", "false"]);
await this.run(["config", "core.attributesFile", "/dev/null"]);
} catch (err: unknown) {
const detail = err instanceof Error ? err.message : String(err);
throw new Error(
`failed to pin vault git config (SPEC §11) — ensure ${this.vaultPath}` +
"/.git/config is writable and not locked (e.g. stale config.lock): " +
detail,
);
}
// Create the initial empty commit on `main` if the repo has no commits yet,
// so both `main` and (later) `docmost` branches have a common base.
if (!(await this.hasAnyCommit())) {
// Make sure we are on the default branch before the first commit (covers
// the older-git case where `init -b` was not honored).
await this.run(["checkout", "-B", DEFAULT_BRANCH]);
await this.commitRaw("init vault", {
authorName: BOT_AUTHOR_NAME,
authorEmail: BOT_AUTHOR_EMAIL,
allowEmpty: true,
});
}
}
/** True if `cwd` is inside a git work-tree (the vault is initialized). */
private async isRepo(): Promise<boolean> {
const r = await this.runRaw(["rev-parse", "--is-inside-work-tree"]);
return r.code === 0 && r.stdout.trim() === "true";
}
/** True if a LOCAL git config key is set in the vault repo. */
private async hasLocalConfig(key: string): Promise<boolean> {
const r = await this.runRaw(["config", "--local", "--get", key]);
return r.code === 0 && r.stdout.trim().length > 0;
}
/** True if the repo has at least one commit (HEAD resolves). */
private async hasAnyCommit(): Promise<boolean> {
const r = await this.runRaw(["rev-parse", "--verify", "HEAD"]);
return r.code === 0;
}
/** True if a branch with the given name exists. */
async branchExists(name: string): Promise<boolean> {
const r = await this.runRaw([
"rev-parse",
"--verify",
`refs/heads/${name}`,
]);
return r.code === 0;
}
/**
* Create `name` from `fromBranch` if it does not already exist. No-op (and no
* checkout) when the branch is already present.
*/
async ensureBranch(name: string, fromBranch: string): Promise<void> {
if (await this.branchExists(name)) return;
await this.run(["branch", name, fromBranch]);
}
/** Name of the currently checked-out branch. */
async currentBranch(): Promise<string> {
return this.run(["rev-parse", "--abbrev-ref", "HEAD"]);
}
/** Check out an existing branch. */
async checkout(name: string): Promise<void> {
await this.run(["checkout", name]);
}
/** Stage everything (adds, modifications, deletions). */
async stageAll(): Promise<void> {
await this.run(["add", "-A"]);
}
/**
* True if the vault is mid-merge (an unresolved merge from a previous run,
* SPEC §9 / §12). Detected via a `MERGE_HEAD` ref OR any unmerged
* (conflicted) index entries (`git ls-files -u`). The pull cycle checks this
* BEFORE any checkout so a left-over merge produces a clear, actionable
* message instead of a raw "you need to resolve your current index first"
* failure deep inside `checkout`. This is what makes re-runs converge
* (resumability, SPEC §12).
*/
async isMergeInProgress(): Promise<boolean> {
// MERGE_HEAD exists exactly while a merge is in progress.
const mergeHead = await this.runRaw([
"rev-parse",
"--verify",
"--quiet",
"MERGE_HEAD",
]);
if (mergeHead.code === 0 && mergeHead.stdout.trim().length > 0) return true;
// Fallback / belt-and-suspenders: any unmerged index entries also mean the
// working tree is mid-conflict and a checkout would refuse.
const unmerged = await this.runRaw(["ls-files", "-u"]);
return unmerged.code === 0 && unmerged.stdout.trim().length > 0;
}
/**
* Commit the currently STAGED changes with an explicit author/committer
* identity and the given trailers appended to the message body (SPEC §7.3
* provenance). Returns `true` if a commit was made, `false` if there was
* nothing to commit (graceful no-op). The caller is expected to have staged
* its changes first (e.g. via `stageAll`).
*/
async commit(message: string, opts: CommitOptions): Promise<boolean> {
// Nothing staged -> nothing to commit. Treat as a no-op (SPEC §11: a
// deterministic re-pull of unchanged pages produces identical bytes, so
// git sees no diff and we must not error).
const staged = await this.runRaw([
"diff",
"--cached",
"--quiet",
]);
// `diff --cached --quiet` exits 0 when the index matches HEAD (nothing
// staged), 1 when there are staged changes.
if (staged.code === 0) return false;
await this.commitRaw(message, opts);
return true;
}
/**
* Low-level commit used by both `commit` and `ensureRepo`'s initial commit.
* Builds the full message with appended trailers and sets author + committer
* identity via env vars (so the committer matches the author, not the repo
* default).
*/
private async commitRaw(
message: string,
opts: CommitOptions & { allowEmpty?: boolean },
): Promise<void> {
const fullMessage = buildCommitMessage(message, opts.trailers);
// `--no-verify` skips pre-commit/commit-msg hooks: a global core.hooksPath
// (or any injected hook) must never interfere with engine commits in our
// dedicated vault repo.
const args = ["commit", "--no-verify", "-m", fullMessage];
if (opts.allowEmpty) args.push("--allow-empty");
// Route through the single `runRaw` primitive; set author + committer
// identity via env vars (so the committer matches the author, not the repo
// default). Throw via the same unified message on a non-zero exit.
const r = await this.runRaw(args, {
env: {
GIT_AUTHOR_NAME: opts.authorName,
GIT_AUTHOR_EMAIL: opts.authorEmail,
GIT_COMMITTER_NAME: opts.authorName,
GIT_COMMITTER_EMAIL: opts.authorEmail,
},
});
if (r.code !== 0) {
const detail = (r.stderr || r.stdout || "").trim();
throw new Error(`git ${args.join(" ")} failed: ${detail}`);
}
}
/**
* Merge `fromBranch` into the current branch (`git merge --no-edit`).
* Fast-forwards when possible; performs a real 3-way merge otherwise. Conflict
* state is SURFACED (returned), NOT auto-resolved (SPEC §9): the conflict
* markers are left in the worktree for manual resolution by a later increment,
* and — critically — nothing is pushed to Docmost (we never write to Docmost
* anyway).
*/
async merge(fromBranch: string): Promise<MergeResult> {
const r = await this.runRaw(["merge", "--no-edit", fromBranch]);
const output = `${r.stdout}\n${r.stderr}`.trim();
if (r.code === 0) {
return { ok: true, conflict: false, output };
}
// A non-zero exit on merge most commonly means a conflict. Confirm by
// checking for unmerged paths (porcelain "U" status) so we don't mislabel
// an unrelated failure as a conflict.
const conflict = await this.hasUnmergedPaths();
return { ok: false, conflict, output };
}
/** True if the index has any unmerged (conflicted) paths. */
private async hasUnmergedPaths(): Promise<boolean> {
const r = await this.runRaw(["diff", "--name-only", "--diff-filter=U"]);
return r.code === 0 && r.stdout.trim().length > 0;
}
/**
* List tracked files on the current branch (paths relative to the vault
* root, forward-slash separated). An optional glob (a git pathspec) narrows
* the listing, e.g. `"*.md"`.
*
* The target wiki is RUSSIAN, so vault file names routinely contain Cyrillic
* (e.g. `Колонка.md`). With git's DEFAULT `core.quotepath=true`, `ls-files`
* returns non-ASCII paths octal-escaped and double-quoted (`"\320\232..."`),
* which `src/pull.ts` `readExisting` would then parse as garbage paths,
* breaking move/duplicate detection. We defeat that two ways at once:
* - `core.quotepath=false` disables the octal-escape/quoting. It is now the
* `runRaw` argv baseline (prepended to EVERY invocation), so we no longer
* pass it inline here.
* - `-z` emits NUL-delimited RAW UTF-8 paths (no quoting, no newline
* ambiguity), which we split on `\0`.
* We read the RAW stdout (NOT the trimming `run()` helper, which would mangle
* the NUL-delimited bytes) and split on `\0`, dropping empty entries. Paths
* are returned verbatim — git already emits forward slashes.
*/
async listTrackedFiles(glob?: string): Promise<string[]> {
const r = await this.runRaw(["ls-files", "-z", ...(glob ? [glob] : [])]);
if (r.code !== 0) {
const detail = (r.stderr || r.stdout || "").trim();
throw new Error(`git ls-files failed: ${detail}`);
}
return r.stdout.split("\0").filter((p) => p.length > 0);
}
/**
* Diff two refs with `--name-status -M -z` and parse the NUL-delimited output
* (SPEC §6: the FS→Docmost push direction diffs `main` against
* `refs/docmost/last-pushed`). Rename detection is ON (`-M`), so a moved/renamed
* file is reported as a single `R` row with both its old and new path instead
* of a delete+add pair — that distinction is what lets the push planner tell a
* move from a delete+create (SPEC §8 "Move vs delete").
*
* `-z` makes git emit NUL-delimited RAW UTF-8 records (the Russian wiki has
* Cyrillic file names) with NO quoting/escaping. The record shape differs by
* status:
* - A/M/D: `status\0path\0`
* - R/C: `Rnnn\0oldPath\0newPath\0` (nnn = similarity score, e.g. `R100`)
* We read the RAW stdout (not the trimming `run()` helper, which would mangle
* the NUL bytes), split on `\0`, drop the trailing empty entry, and walk the
* tokens pulling 1 or 2 path tokens per status. Paths are returned verbatim.
*/
async diffNameStatus(
fromRef: string,
toRef: string,
): Promise<DiffEntry[]> {
const r = await this.runRaw([
"diff",
"--name-status",
"-M",
"-z",
fromRef,
toRef,
]);
if (r.code !== 0) {
const detail = (r.stderr || r.stdout || "").trim();
throw new Error(`git diff --name-status failed: ${detail}`);
}
// Tokens alternate: <status> <path...> <status> <path...> ... With `-z`,
// each token (status code AND each path) is its own NUL-delimited field.
const tokens = r.stdout.split("\0").filter((t) => t.length > 0);
const entries: DiffEntry[] = [];
let i = 0;
while (i < tokens.length) {
const raw = tokens[i++];
// The status token is e.g. `A`, `M`, `D`, or `R100` / `C075`. The leading
// letter is the change kind; any trailing digits are the similarity score.
const letter = raw[0] as DiffEntry["status"];
if (letter === "R" || letter === "C") {
const score = Number.parseInt(raw.slice(1), 10);
const oldPath = tokens[i++];
const path = tokens[i++];
if (oldPath === undefined || path === undefined) break; // malformed tail
entries.push({
status: letter,
path,
oldPath,
...(Number.isFinite(score) ? { score } : {}),
});
} else if (letter === "A" || letter === "M" || letter === "D") {
const path = tokens[i++];
if (path === undefined) break; // malformed tail
entries.push({ status: letter, path });
} else {
// Unknown/other status (e.g. T type-change, U unmerged) — consume one
// path token defensively so the walk stays aligned, but do not emit it
// (the push planner only handles A/M/D/R/C).
i++;
}
}
return entries;
}
/**
* Resolve a ref/commit-ish to its full SHA, or `null` if it does not exist.
* `rev-parse --verify --quiet` exits non-zero (and prints nothing) for an
* unknown ref, so a non-zero exit maps cleanly to `null`. Used to read
* `refs/docmost/last-pushed` (SPEC §5) — which is absent before the first push.
*/
async revParse(ref: string): Promise<string | null> {
const r = await this.runRaw(["rev-parse", "--verify", "--quiet", ref]);
if (r.code !== 0) return null;
const sha = r.stdout.trim();
return sha.length > 0 ? sha : null;
}
/**
* Read a ref to its SHA, or `null` if unset. Thin alias over `revParse`,
* named for the push direction's marker `refs/docmost/last-pushed` (SPEC §5:
* "что из `main` уже отражено в Docmost").
*/
async readRef(ref: string): Promise<string | null> {
return this.revParse(ref);
}
/**
* Point `ref` at `target` (`git update-ref <ref> <target>`). Used to advance
* `refs/docmost/last-pushed` to the just-pushed `main` commit after a push
* (SPEC §6 step 3 / §5). `target` may be a SHA or any commit-ish git accepts.
*/
async updateRef(ref: string, target: string): Promise<void> {
await this.run(["update-ref", ref, target]);
}
/**
* Fast-forward `branch` to `toCommit` — but ONLY if it is a TRUE fast-forward,
* i.e. the current `branch` tip is an ancestor of `toCommit` (verified via
* `git merge-base --is-ancestor <branch> <toCommit>`). Used to advance the
* `docmost` mirror branch after a clean push (SPEC §6 step 3 / §10): once a
* push succeeds, Docmost already contains the pushed `main` content, so the
* mirror must reflect it — otherwise the NEXT pull would diff our own write
* back and re-pull it (loop-guard).
*
* SAFETY — never force, never clobber divergent history:
* - If `branch` IS an ancestor of `toCommit`, advance it with
* `git update-ref refs/heads/<branch> <toCommit>`. The `docmost` branch is
* NOT checked out during a push (push works on `main`), so updating the ref
* directly is safe and avoids any working-tree touch.
* - If `branch` is NOT an ancestor (divergent / would-be non-fast-forward),
* do NOT move it — return `{ ok: false, reason: 'not-fast-forward' }` and
* let the caller log it. We must never overwrite a `docmost` history that
* has commits the push base does not contain.
*
* Returns `{ ok: true }` when the branch was advanced (or already at
* `toCommit`, a degenerate fast-forward), `{ ok: false, reason }` otherwise.
* A missing `branch` or `toCommit` also yields `{ ok: false }` with a reason.
*/
async fastForwardBranch(
branch: string,
toCommit: string,
): Promise<{ ok: boolean; reason?: string }> {
const branchRef = `refs/heads/${branch}`;
// Resolve both endpoints first so a missing ref is a clean refusal, not a
// confusing `merge-base` failure.
const branchSha = await this.revParse(branchRef);
if (branchSha === null) {
return { ok: false, reason: `branch ${branch} does not exist` };
}
const targetSha = await this.revParse(toCommit);
if (targetSha === null) {
return { ok: false, reason: `target ${toCommit} does not resolve` };
}
// Already at the target -> a no-op fast-forward (still ok).
if (branchSha === targetSha) return { ok: true };
// `merge-base --is-ancestor A B` exits 0 iff A is an ancestor of B. Only a
// true ancestor is a fast-forward; anything else is divergent and refused.
const ancestor = await this.runRaw([
"merge-base",
"--is-ancestor",
branchSha,
targetSha,
]);
if (ancestor.code !== 0) {
return { ok: false, reason: "not-fast-forward" };
}
// Safe to advance: the branch is not checked out during push, so a direct
// ref update avoids a checkout/working-tree touch.
await this.updateRef(branchRef, targetSha);
return { ok: true };
}
/**
* Read a file's content at a specific ref (`git show <ref>:<path>`), or `null`
* if the path does not exist there. Used by the push direction to read the
* PRE-IMAGE of a DELETED file (e.g. at `refs/docmost/last-pushed`) so its
* `docmost:meta` — and therefore its `pageId` — can be recovered to translate
* the deletion into a `delete_page` (SPEC §6/§8: only TRACKED files, i.e. ones
* that had a pageId, are deleted in Docmost). A non-zero exit (path absent at
* that ref) maps to `null` rather than throwing.
*/
async showFileAtRef(ref: string, path: string): Promise<string | null> {
// `git show <ref>:<path>` requires the path relative to the repo root; pass
// it verbatim (forward-slash, matching `listTrackedFiles` / diff output).
const r = await this.runRaw(["show", `${ref}:${path}`]);
if (r.code !== 0) return null;
return r.stdout;
}
}
/**
* Build the environment for a vault git invocation (SPEC §12 cwd-isolation).
* Used by the single `runRaw` primitive every git command flows through, so
* these pins apply uniformly (including the `git --version` preflight).
*
* cwd-isolation is this module's central safety guarantee: every git command
* MUST operate on the vault repo at `cwd: vaultPath` and nothing else. An
* inherited `GIT_DIR` / `GIT_WORK_TREE` in `process.env` would silently
* redirect the operation away from `cwd` (e.g. to the source repo or another
* checkout), defeating that guarantee. So we always strip them, regardless of
* whatever else the caller adds (author/committer identity, etc.).
*
* Exported for unit testing.
*/
export function vaultGitEnv(
extra?: Record<string, string>,
): NodeJS.ProcessEnv {
const env: NodeJS.ProcessEnv = {
...process.env,
// Locale-independent output (defense in depth). We never parse localized
// prose, but pinning the locale prevents a future regression where some
// git message we DO key on is translated by an inherited LC_ALL/LANG.
LC_ALL: "C",
LANG: "C",
// Never page (we already pass --no-pager, but a stray GIT_PAGER could still
// bite) and never block on an interactive prompt (e.g. credentials) — the
// daemon runs unattended and must not hang.
GIT_PAGER: "cat",
GIT_TERMINAL_PROMPT: "0",
...extra,
};
delete env.GIT_DIR;
delete env.GIT_WORK_TREE;
return env;
}
/**
* Build a commit message body with trailer lines appended (SPEC §7.3). The
* trailers are separated from the subject by a blank line so `git interpret-
* trailers` / `git log --format=%(trailers)` parse them as trailers.
* Exported for unit testing.
*/
export function buildCommitMessage(
subject: string,
trailers?: string[],
): string {
if (!trailers || trailers.length === 0) return subject;
return `${subject}\n\n${trailers.join("\n")}`;
}

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/**
* Pull cycle — Docmost -> vault (SPEC §6 "Docmost -> ФС").
*
* This increment turns the read-only mirror into the git-backed pull cycle:
*
* 1. ensureRepo(vault); refuse if a merge is in progress (SPEC §9/§12);
* ensureBranch("docmost", "main") (SPEC §5 branches)
* 2. checkout docmost
* 3. fetch the live tree (listSpaceTree -> {pages, complete}) -> compute the
* desired `live` files (relPath via the pure sanitize/disambiguation layout)
* 4. parse `existing` tracked .md files (pageId + relPath from docmost:meta)
* 5. plan = planReconciliation(live, existing) (pure, SPEC §5/§8); toDelete
* is absence-only, moves are separate
* 6. decideAbsenceDeletions: SUPPRESS absence deletions on an incomplete tree
* fetch (SPEC §8) and behind the mass-delete guard (defense in depth)
* 7. write each live page in its fixpoint form (normalize-on-write, SPEC §11);
* apply moved-old-path removals (only when the move write SUCCEEDED) and
* absence-delete removals (only when the decision allowed them)
* 8. stageAll + commit on `docmost` with the provenance trailer (SPEC §7.3)
* 9. checkout main + merge docmost (conflicts are surfaced, NOT auto-resolved,
* SPEC §9); push is deferred (SPEC §7)
* 10. one-line summary
*
* DIRECTION IS Docmost -> vault ONLY. Nothing here ever writes to Docmost
* (read-only: listSpaceTree + getPageJson). All git operations run against
* the vault repo (`cwd = vaultPath`), never the source repo (see ./git.ts).
*
* VENDORED into gitmost (plan §2.1/§3.1): the client seam is the native
* `GitSyncClient` (`Pick<GitSyncClient, ...>`), not the upstream REST
* `DocmostClient`; the upstream CLI `main()` entry point is dropped (the gitmost
* server drives the engine in-process). Engine LOGIC is byte-identical.
*/
import { dirname } from "node:path";
import { sep } from "node:path";
import { parseDocmostMarkdown } from "../lib/index";
import type { GitSyncClient } from "./client.types";
import { buildVaultLayout, type PageNode } from "./layout";
import {
VaultGit,
BOT_AUTHOR_NAME,
BOT_AUTHOR_EMAIL,
DEFAULT_BRANCH,
} from "./git";
import {
planReconciliation,
decideAbsenceDeletions,
type LiveEntry,
type MovedEntry,
type DeletionDecision,
} from "./reconcile";
import { stabilizePageFile, type PageMeta } from "./stabilize";
// Engine-only mirror branch (SPEC §5): the engine writes here, humans never do.
const DOCMOST_BRANCH = "docmost";
// Machine-readable provenance the loop-guard keys on (SPEC §7.3 / §12).
const SOURCE_TRAILER = "Docmost-Sync-Source: docmost";
// Number of pages fetched/stabilized concurrently. Bounded so a large space
// does not open thousands of simultaneous requests/conversions at once.
const CONCURRENCY = 6;
// How often to log incremental progress (every N completed pages).
const PROGRESS_EVERY = 25;
/** Convert a vault-relative path (forward-slash) to an absolute FS path. */
function relToAbs(vaultRoot: string, relPath: string): string {
return [vaultRoot, ...relPath.split("/")].join("/");
}
/** Convert an absolute/relative segment list under the vault to a relPath. */
function segmentsToRelPath(segments: string[], stem: string): string {
return [...segments, `${stem}.md`].join("/");
}
/**
* Injectable IO for `readExisting` (R-Pull-1, test-strategy report §5). The real
* `main` wires these to `git.listTrackedFiles("*.md")` and an `fs.readFile`
* rooted at the vault; tests pass fakes so the parsing/skip rules are unit-
* testable without a real git repo or filesystem.
*/
export interface ReadExistingDeps {
/** List tracked .md paths (forward-slash, vault-relative). */
listTracked: () => Promise<string[]>;
/** Read a tracked file's text by its (forward-slash) vault-relative path. */
readFile: (relPath: string) => Promise<string>;
}
/**
* Read every tracked .md file in the vault and parse its `docmost:meta` to
* recover `{ pageId, relPath }`. Files without a parseable pageId in meta are
* skipped (they are not engine-tracked pages — e.g. a stray hand-written file).
*
* The IO is injected (R-Pull-1) so this is testable with fakes. Skip rules:
* - a `readFile` rejection (tracked but missing on disk, a mid-operation race)
* -> skipped, NOT thrown; the next pull converges;
* - unparseable meta (`parseDocmostMarkdown` throws) -> skipped;
* - parseable but no `pageId` in meta -> skipped.
*/
export async function readExisting(
deps: ReadExistingDeps,
): Promise<{ pageId: string; relPath: string }[]> {
const tracked = await deps.listTracked();
const existing: { pageId: string; relPath: string }[] = [];
for (const relPath of tracked) {
// git ls-files always emits forward-slash paths; normalize just in case.
const rel = relPath.split(sep).join("/");
let text: string;
try {
text = await deps.readFile(rel);
} catch {
// Tracked but missing on disk (mid-operation race) — skip; the next pull
// converges.
continue;
}
let pageId: string | undefined;
try {
const { meta } = parseDocmostMarkdown(text);
pageId = meta?.pageId;
} catch {
// Unparseable meta — not engine-tracked; leave it alone.
pageId = undefined;
}
if (pageId) existing.push({ pageId, relPath: rel });
}
return existing;
}
/**
* Input to the PURE `computePullActions` (R-Pull-2). All data, no IO: the live
* tree nodes + completeness flag (from `listSpaceTree`) and the parsed
* `existing` tracked files (from `readExisting`).
*/
export interface PullActionsInput {
/** Live page nodes for the space (from `listSpaceTree`). */
pages: PageNode[];
/** Whether the live tree fetch was COMPLETE (SPEC §8 suppression). */
treeComplete: boolean;
/** Parsed tracked files: `{ pageId, relPath }` (from `readExisting`). */
existing: { pageId: string; relPath: string }[];
}
/**
* The PURE decisions object computed by `computePullActions` (no IO). It holds
* the reconciliation plan plus the SPEC §8 absence-deletion decision, with the
* suppression already folded in: `toDelete` is the POST-suppression set the
* caller should actually remove (empty when `deletionDecision.apply` is false).
*/
export interface PullActions {
/** Pages to (re)write at their relPath (add + update + move target). */
toWrite: { pageId: string; relPath: string }[];
/** Moves: write new path, then remove old path (only on a successful write). */
moved: MovedEntry[];
/**
* Absence-based paths to delete AFTER suppression. Empty when the decision
* suppressed deletions this cycle, so the caller can apply it unconditionally.
*/
toDelete: string[];
/** Why absence deletions were (or were not) applied (for logging + tests). */
deletionDecision: DeletionDecision;
/** Tracked-file count (for the suppression log messages). */
existingCount: number;
/** Planned absence-delete count BEFORE suppression (for the log message). */
plannedDeleteCount: number;
}
/**
* PURE pull-action planner (R-Pull-2, test-strategy report §5). Takes the live
* tree nodes + completeness + existing tracked files and returns the full set of
* decisions with NO IO:
*
* - builds the vault layout (deterministic relPath per live page),
* - `planReconciliation` -> toWrite / moved / absence-toDelete,
* - `decideAbsenceDeletions` -> the SPEC §8 suppression (incomplete-fetch +
* empty-live + mass-delete guard), folded IN here so `toDelete` is the
* POST-suppression set (empty when suppressed).
*
* Moves are NOT governed by the suppression: a moved page is present in `live`,
* so its old-path removal is real (the caller still gates it on the write
* succeeding). The expensive content fetch / file write / git ops happen in the
* thin `applyPullActions`.
*/
export function computePullActions(input: PullActionsInput): PullActions {
const { pages, treeComplete, existing } = input;
const layout = buildVaultLayout(pages);
const live: LiveEntry[] = [];
for (const p of pages) {
if (!p || !p.id) continue;
const entry = layout.get(p.id);
if (!entry) continue;
live.push({
pageId: p.id,
relPath: segmentsToRelPath(entry.segments, entry.stem),
});
}
// Plan reconciliation (pure). `plan.toDelete` is ABSENCE-based only;
// `plan.moved` carries move old-path removals separately.
const plan = planReconciliation(live, existing);
// Decide whether the ABSENCE-based deletions may be applied this cycle
// (SPEC §8): incomplete-fetch suppression + empty-live + mass-delete guard.
// Moves are NOT governed by this.
const deletionDecision = decideAbsenceDeletions({
treeComplete,
liveCount: live.length,
existingCount: existing.length,
deleteCount: plan.toDelete.length,
});
return {
toWrite: plan.toWrite,
moved: plan.moved,
// Fold the suppression in: a suppressed cycle deletes nothing.
toDelete: deletionDecision.apply ? plan.toDelete : [],
deletionDecision,
existingCount: existing.length,
plannedDeleteCount: plan.toDelete.length,
};
}
/**
* Injectable IO for `applyPullActions` (R-Pull-2). The real `main` wires these
* to the live client, the vault git wrapper, and `node:fs/promises`; tests pass
* fakes that RECORD calls so the ordering + the move-on-success data-loss guard
* are testable without real git/fs/network.
*/
export interface ApplyPullActionsDeps {
client: Pick<GitSyncClient, "getPageJson">;
git: Pick<VaultGit, "stageAll" | "commit" | "checkout" | "merge">;
/** Write a file by ABSOLUTE path (mkdir of the parent is done internally). */
writeFile: (absPath: string, text: string) => Promise<void>;
/** Recursive mkdir of an ABSOLUTE directory path. */
mkdir: (absDir: string) => Promise<void>;
/** Remove a file by ABSOLUTE path (force: a missing file is a no-op). */
rm: (absPath: string) => Promise<void>;
}
/** Outcome counters from `applyPullActions` (for the summary + tests). */
export interface ApplyResult {
written: number;
movedApplied: number;
deleted: number;
failed: number;
committed: boolean;
merge: { ok: boolean; conflict: boolean; output: string };
}
/**
* THIN IO applier (R-Pull-2). Performs the side effects in the EXACT current
* order, with all the original safety guards preserved bit-for-bit:
*
* 1. for each `toWrite`: fetch content (`client.getPageJson`) -> stabilize
* (normalize-on-write fixpoint, SPEC §11) -> mkdir + write. One bad page
* never aborts the pull (bounded-concurrency pool, fault-tolerant).
* 2. apply MOVE old-path removals — ONLY when the planner marked the old path
* removable AND the new-path write SUCCEEDED (the ⭐ data-loss guard: a
* failed move-write keeps the old path so the page never vanishes).
* 3. apply (post-suppression) absence deletes.
* 4. stageAll + commit on `docmost` (subject from ACTUAL written/deleted
* counts) + checkout main + merge docmost (conflicts surfaced, SPEC §9).
*
* `vaultRoot` roots the relPath -> absolute-path conversion for the fs deps.
*/
export async function applyPullActions(
deps: ApplyPullActionsDeps,
actions: PullActions,
vaultRoot: string,
): Promise<ApplyResult> {
const { client, git } = deps;
// Emit the SPEC §8 suppression warnings (preserved from the original `main`).
const decision = actions.deletionDecision;
if (!decision.apply) {
if (decision.reason === "incomplete-fetch") {
console.warn(
"pull: tree fetch incomplete — deletions suppressed this cycle (SPEC §8)",
);
} else if (decision.reason === "empty-live") {
console.warn(
`pull: live fetch returned 0 pages but ${actions.existingCount} file(s) are ` +
`tracked — deletions suppressed this cycle (SPEC §8). Re-run when ` +
`Docmost is reachable.`,
);
} else {
console.warn(
`pull: plan would delete ${actions.plannedDeleteCount} of ${actions.existingCount} ` +
`tracked file(s) (mass-delete guard) — deletions suppressed this ` +
`cycle (SPEC §8). Verify the live Docmost tree, then re-run.`,
);
}
}
// 1. Write each live page in its fixpoint form (normalize-on-write, SPEC §11).
let written = 0;
let failed = 0;
let completed = 0;
let nextIndex = 0;
// pageIds whose write FAILED. A moved page whose new-path write failed must
// NOT have its old path removed (otherwise the page vanishes entirely).
const failedPageIds = new Set<string>();
const writeOne = async (w: {
pageId: string;
relPath: string;
}): Promise<void> => {
try {
const page = await client.getPageJson(w.pageId);
const meta: PageMeta = {
version: 1,
pageId: page.id,
slugId: page.slugId,
title: page.title,
spaceId: page.spaceId,
parentPageId: page.parentPageId ?? null,
};
const text = await stabilizePageFile(page.content, meta);
const abs = relToAbs(vaultRoot, w.relPath);
await deps.mkdir(dirname(abs));
await deps.writeFile(abs, text);
written++;
} catch (err) {
failed++;
failedPageIds.add(w.pageId);
console.error(
`pull: failed page ${w.pageId}:`,
err instanceof Error ? err.message : String(err),
);
} finally {
completed++;
if (completed % PROGRESS_EVERY === 0) {
console.log(`pulled ${completed}/${actions.toWrite.length}`);
}
}
};
// Bounded-concurrency pool (dependency-free): a fixed set of runners each
// take the next index until the write list is exhausted. One bad page never
// aborts the whole pull (mirrors the fault-tolerant tree walk).
const runner = async (): Promise<void> => {
while (true) {
const i = nextIndex++;
if (i >= actions.toWrite.length) return;
await writeOne(actions.toWrite[i]);
}
};
await Promise.all(
Array.from(
{ length: Math.min(CONCURRENCY, actions.toWrite.length) || 1 },
() => runner(),
),
);
// Helper: `rm` with force:true is a no-op if the file is already gone.
const removePath = async (rel: string, what: string): Promise<boolean> => {
try {
await deps.rm(relToAbs(vaultRoot, rel));
return true;
} catch (err) {
console.error(
`pull: failed to ${what} ${rel}:`,
err instanceof Error ? err.message : String(err),
);
return false;
}
};
// 2. Apply MOVE old-path removals. A moved page IS present in `live`, so its
// old path is genuinely stale — NOT subject to the incomplete-fetch
// suppression. BUT only remove the old path when (a) the planner marked it
// removable (not reused by another live page) AND (b) the new-path write
// actually SUCCEEDED — otherwise we would delete the only copy of a page
// whose move-write failed (⭐ data-loss guard).
let movedApplied = 0;
for (const m of actions.moved) {
if (!m.removeOldPath) continue;
if (failedPageIds.has(m.pageId)) {
console.warn(
`pull: move write for ${m.pageId} failed — keeping old path ` +
`${m.fromRelPath} (SPEC §8)`,
);
continue;
}
if (await removePath(m.fromRelPath, "remove moved old path")) movedApplied++;
}
// 3. Apply ABSENCE-based deletions — `actions.toDelete` is ALREADY the
// post-suppression set (empty when the decision suppressed them, SPEC §8).
let deleted = 0;
for (const rel of actions.toDelete) {
if (await removePath(rel, "delete")) deleted++;
}
// 4. Stage + commit on `docmost` (only if there is something to commit).
// Deterministic stabilized output means unchanged pages produce identical
// bytes -> git sees no diff -> no churn (SPEC §11). The subject reflects the
// ACTUAL work applied (pages written + files deleted), not the planned size,
// so a run with failures does not over-report (SPEC §5 nit).
const subject =
deleted > 0
? `docmost: sync ${written} page(s), ${deleted} deleted`
: `docmost: sync ${written} page(s)`;
await git.stageAll();
const committed = await git.commit(subject, {
authorName: BOT_AUTHOR_NAME,
authorEmail: BOT_AUTHOR_EMAIL,
trailers: [SOURCE_TRAILER],
});
// Merge docmost -> main. Conflicts are surfaced and left in git (SPEC §9);
// we never push to Docmost. Push to a git remote is deferred (SPEC §7).
await git.checkout(DEFAULT_BRANCH);
const merge = await git.merge(DOCMOST_BRANCH);
if (merge.conflict) {
console.error(
"pull: merge of docmost -> main CONFLICTED. Conflict markers were left " +
"in the vault for manual resolution (SPEC §9). Nothing is pushed to " +
"Docmost (read-only). Resolve locally, then re-run.",
);
} else if (!merge.ok) {
console.error(`pull: merge of docmost -> main failed: ${merge.output}`);
}
console.log("pull: git push to remote is DEFERRED in this increment (SPEC §7).");
return { written, movedApplied, deleted, failed, committed, merge };
}

1268
packages/git-sync/src/engine/push.ts Normal file
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70
packages/git-sync/src/engine/settings.ts Normal file
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@@ -0,0 +1,70 @@
/**
* Engine settings (plan §2.1 / §7.2 — ADAPTED for vendoring).
*
* Upstream this module also loaded `.env` (`dotenv`) and bound `parseSettings`
* to `process.env` via a `loadSettings()` entry point. In gitmost the engine is
* driven IN-PROCESS by the NestJS server, which builds the `Settings` object
* from `EnvironmentService` (plan §7.2) — so the engine must NOT reach into
* `process.env` here. We therefore vendor ONLY:
* - the `Settings` type the engine consumes, and
* - `parseSettings(env)` as a PURE function (validate a raw env object -> typed
* `Settings`), kept for unit tests and for the server to reuse if it wants
* to validate an env-shaped object.
* The `loadSettings()` / `loadDotenv()` side-effecting entry point is dropped.
*/
import { z } from 'zod';
// Schema keyed by the real ENV variable names so validation errors name the
// exact variable. Credentials and the address of our OWN Docmost instance have
// NO default — a missing value must fail at startup, never silently fall back.
export const envSchema = z.object({
// Docmost connection — address of our own instance, no default.
DOCMOST_API_URL: z.string().url(),
// Credentials for /auth/login — no default, never hardcoded.
DOCMOST_EMAIL: z.string().min(1),
DOCMOST_PASSWORD: z.string().min(1),
// Which Docmost space to mirror.
DOCMOST_SPACE_ID: z.string().min(1),
// Local git vault (state store) — kept under data/ so the volume persists it.
VAULT_PATH: z.string().min(1).default('data/vault'),
// Optional git remote the vault pushes to. Empty string is treated as unset.
GIT_REMOTE: z.preprocess(
(v) => (v === '' ? undefined : v),
z.string().min(1).optional(),
),
// Non-secret tunables — sensible defaults are fine.
POLL_INTERVAL_MS: z.coerce.number().int().positive().default(15000),
DEBOUNCE_MS: z.coerce.number().int().positive().default(2000),
LOG_LEVEL: z.enum(['debug', 'info', 'warn', 'error']).default('info'),
});
export type Settings = {
docmostApiUrl: string;
docmostEmail: string;
docmostPassword: string;
docmostSpaceId: string;
vaultPath: string;
gitRemote?: string;
pollIntervalMs: number;
debounceMs: number;
logLevel: 'debug' | 'info' | 'warn' | 'error';
};
// Pure: validate a raw environment object and map it to a typed Settings.
// Throws ZodError on bad config. No side effects — safe to import in tests.
export function parseSettings(env: NodeJS.ProcessEnv): Settings {
const e = envSchema.parse(env);
return {
docmostApiUrl: e.DOCMOST_API_URL,
docmostEmail: e.DOCMOST_EMAIL,
docmostPassword: e.DOCMOST_PASSWORD,
docmostSpaceId: e.DOCMOST_SPACE_ID,
vaultPath: e.VAULT_PATH,
gitRemote: e.GIT_REMOTE,
pollIntervalMs: e.POLL_INTERVAL_MS,
debounceMs: e.DEBOUNCE_MS,
logLevel: e.LOG_LEVEL,
};
}

68
packages/git-sync/src/index.ts
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@@ -44,3 +44,71 @@ export { stabilizePageFile } from "./engine/stabilize";
export type { PageMeta } from "./engine/stabilize";
export { bodyHash } from "./engine/loop-guard";
// IO engine (plan §2.1/§3.1): the client seam, the VaultGit git wrapper, the
// pull (Docmost->FS) + push (FS->Docmost) planners/appliers, and the (pure)
// settings parser. The engine consumes the native `GitSyncClient` seam (server
// implements it) — the upstream REST `DocmostClient` is NOT vendored.
export type { GitSyncClient, GitSyncPageNodeLite } from "./engine/client.types";
export {
VaultGit,
vaultGitEnv,
buildCommitMessage,
BOT_AUTHOR_NAME,
BOT_AUTHOR_EMAIL,
DEFAULT_BRANCH,
} from "./engine/git";
export type { DiffEntry, MergeResult, CommitOptions } from "./engine/git";
export {
readExisting,
computePullActions,
applyPullActions,
} from "./engine/pull";
export type {
ReadExistingDeps,
PullActionsInput,
PullActions,
ApplyPullActionsDeps,
ApplyResult,
} from "./engine/pull";
export {
classifyRenameMoves,
computePushActions,
applyPushActions,
runPush,
parentFolderFile,
parseArgs,
LAST_PUSHED_REF,
DOCMOST_BRANCH,
LOCAL_AUTHOR_NAME,
LOCAL_AUTHOR_EMAIL,
LOCAL_SOURCE_TRAILER,
} from "./engine/push";
export type {
CreateAction,
UpdateAction,
DeleteAction,
RenameMoveAction,
RenameMoveActionClassified,
ClassifyRenameMovesDeps,
PushActions,
PushActionsInput,
MetaSide,
ApplyPushDeps,
WrittenBackPage,
PushedPageRecord,
PushFailure,
PushNoop,
ApplyPushResult,
PushDeps,
PushRunResult,
PushParsedArgs,
} from "./engine/push";
export { parseSettings, envSchema } from "./engine/settings";
export type { Settings } from "./engine/settings";
export { loadSettingsOrExit } from "./engine/config-errors";