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@@ -1 +1,777 @@
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-export * as Snapshot from "./snapshot"
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+import { Cause, Duration, Effect, Layer, Schedule, Semaphore, Context, Stream } from "effect"
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+import { ChildProcess, ChildProcessSpawner } from "effect/unstable/process"
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+import { formatPatch, structuredPatch } from "diff"
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+import path from "path"
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+import z from "zod"
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+import * as CrossSpawnSpawner from "@/effect/cross-spawn-spawner"
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+import { InstanceState } from "@/effect"
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+import { AppFileSystem } from "@opencode-ai/shared/filesystem"
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+import { Hash } from "@opencode-ai/shared/util/hash"
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+import { Config } from "../config"
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+import { Global } from "../global"
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+import { Log } from "../util"
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+
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+export const Patch = z.object({
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+ hash: z.string(),
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+ files: z.string().array(),
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+})
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+export type Patch = z.infer<typeof Patch>
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+
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+export const FileDiff = z
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+ .object({
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+ file: z.string(),
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+ patch: z.string(),
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+ additions: z.number(),
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+ deletions: z.number(),
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+ status: z.enum(["added", "deleted", "modified"]).optional(),
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+ })
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+ .meta({
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+ ref: "SnapshotFileDiff",
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+ })
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+export type FileDiff = z.infer<typeof FileDiff>
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+
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+const log = Log.create({ service: "snapshot" })
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+const prune = "7.days"
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+const limit = 2 * 1024 * 1024
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+const core = ["-c", "core.longpaths=true", "-c", "core.symlinks=true"]
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+const cfg = ["-c", "core.autocrlf=false", ...core]
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+const quote = [...cfg, "-c", "core.quotepath=false"]
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+interface GitResult {
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+ readonly code: ChildProcessSpawner.ExitCode
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+ readonly text: string
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+ readonly stderr: string
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+}
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+
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+type State = Omit<Interface, "init">
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+
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+export interface Interface {
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+ readonly init: () => Effect.Effect<void>
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+ readonly cleanup: () => Effect.Effect<void>
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+ readonly track: () => Effect.Effect<string | undefined>
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+ readonly patch: (hash: string) => Effect.Effect<Patch>
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+ readonly restore: (snapshot: string) => Effect.Effect<void>
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+ readonly revert: (patches: Patch[]) => Effect.Effect<void>
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+ readonly diff: (hash: string) => Effect.Effect<string>
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+ readonly diffFull: (from: string, to: string) => Effect.Effect<FileDiff[]>
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+}
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+
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+export class Service extends Context.Service<Service, Interface>()("@opencode/Snapshot") {}
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+
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+export const layer: Layer.Layer<
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+ Service,
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+ never,
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+ AppFileSystem.Service | ChildProcessSpawner.ChildProcessSpawner | Config.Service
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+> = Layer.effect(
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+ Service,
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+ Effect.gen(function* () {
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+ const fs = yield* AppFileSystem.Service
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+ const spawner = yield* ChildProcessSpawner.ChildProcessSpawner
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+ const config = yield* Config.Service
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+ const locks = new Map<string, Semaphore.Semaphore>()
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+
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+ const lock = (key: string) => {
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+ const hit = locks.get(key)
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+ if (hit) return hit
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+
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+ const next = Semaphore.makeUnsafe(1)
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+ locks.set(key, next)
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+ return next
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+ }
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+
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+ const state = yield* InstanceState.make<State>(
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+ Effect.fn("Snapshot.state")(function* (ctx) {
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+ const state = {
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+ directory: ctx.directory,
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+ worktree: ctx.worktree,
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+ gitdir: path.join(Global.Path.data, "snapshot", ctx.project.id, Hash.fast(ctx.worktree)),
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+ vcs: ctx.project.vcs,
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+ }
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+
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+ const args = (cmd: string[]) => ["--git-dir", state.gitdir, "--work-tree", state.worktree, ...cmd]
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+
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+ const enc = new TextEncoder()
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+ const feed = (list: string[]) => Stream.make(enc.encode(list.join("\0") + "\0"))
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+
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+ const git = Effect.fnUntraced(
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+ function* (
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+ cmd: string[],
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+ opts?: { cwd?: string; env?: Record<string, string>; stdin?: ChildProcess.CommandInput },
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+ ) {
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+ const proc = ChildProcess.make("git", cmd, {
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+ cwd: opts?.cwd,
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+ env: opts?.env,
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+ extendEnv: true,
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+ stdin: opts?.stdin,
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+ })
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+ const handle = yield* spawner.spawn(proc)
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+ const [text, stderr] = yield* Effect.all(
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+ [Stream.mkString(Stream.decodeText(handle.stdout)), Stream.mkString(Stream.decodeText(handle.stderr))],
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+ { concurrency: 2 },
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+ )
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+ const code = yield* handle.exitCode
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+ return { code, text, stderr } satisfies GitResult
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+ },
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+ Effect.scoped,
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+ Effect.catch((err) =>
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+ Effect.succeed({
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+ code: ChildProcessSpawner.ExitCode(1),
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+ text: "",
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+ stderr: err instanceof Error ? err.message : String(err),
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+ }),
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+ ),
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+ )
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+
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+ const ignore = Effect.fnUntraced(function* (files: string[]) {
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+ if (!files.length) return new Set<string>()
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+ const check = yield* git(
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+ [
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+ ...quote,
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+ "--git-dir",
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+ path.join(state.worktree, ".git"),
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+ "--work-tree",
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+ state.worktree,
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+ "check-ignore",
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+ "--no-index",
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+ "--stdin",
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+ "-z",
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+ ],
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+ {
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+ cwd: state.directory,
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+ stdin: feed(files),
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+ },
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+ )
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+ if (check.code !== 0 && check.code !== 1) return new Set<string>()
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+ return new Set(check.text.split("\0").filter(Boolean))
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+ })
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+
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+ const drop = Effect.fnUntraced(function* (files: string[]) {
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+ if (!files.length) return
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+ yield* git(
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+ [
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+ ...cfg,
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+ ...args(["rm", "--cached", "-f", "--ignore-unmatch", "--pathspec-from-file=-", "--pathspec-file-nul"]),
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+ ],
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+ {
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+ cwd: state.directory,
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+ stdin: feed(files),
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+ },
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+ )
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+ })
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+
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+ const stage = Effect.fnUntraced(function* (files: string[]) {
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+ if (!files.length) return
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+ const result = yield* git(
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+ [...cfg, ...args(["add", "--all", "--sparse", "--pathspec-from-file=-", "--pathspec-file-nul"])],
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+ {
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+ cwd: state.directory,
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+ stdin: feed(files),
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+ },
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+ )
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+ if (result.code === 0) return
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+ log.warn("failed to add snapshot files", {
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+ exitCode: result.code,
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+ stderr: result.stderr,
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+ })
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+ })
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+
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+ const exists = (file: string) => fs.exists(file).pipe(Effect.orDie)
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+ const read = (file: string) => fs.readFileString(file).pipe(Effect.catch(() => Effect.succeed("")))
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+ const remove = (file: string) => fs.remove(file).pipe(Effect.catch(() => Effect.void))
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+ const locked = <A, E, R>(fx: Effect.Effect<A, E, R>) => lock(state.gitdir).withPermits(1)(fx)
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+
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+ const enabled = Effect.fnUntraced(function* () {
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+ if (state.vcs !== "git") return false
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+ return (yield* config.get()).snapshot !== false
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+ })
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+
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+ const excludes = Effect.fnUntraced(function* () {
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+ const result = yield* git(["rev-parse", "--path-format=absolute", "--git-path", "info/exclude"], {
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+ cwd: state.worktree,
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+ })
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+ const file = result.text.trim()
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+ if (!file) return
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+ if (!(yield* exists(file))) return
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+ return file
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+ })
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+
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+ const sync = Effect.fnUntraced(function* (list: string[] = []) {
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+ const file = yield* excludes()
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+ const target = path.join(state.gitdir, "info", "exclude")
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+ const text = [
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+ file ? (yield* read(file)).trimEnd() : "",
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+ ...list.map((item) => `/${item.replaceAll("\\", "/")}`),
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+ ]
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+ .filter(Boolean)
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+ .join("\n")
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+ yield* fs.ensureDir(path.join(state.gitdir, "info")).pipe(Effect.orDie)
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+ yield* fs.writeFileString(target, text ? `${text}\n` : "").pipe(Effect.orDie)
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+ })
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+
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+ const add = Effect.fnUntraced(function* () {
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+ yield* sync()
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+ const [diff, other] = yield* Effect.all(
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+ [
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+ git([...quote, ...args(["diff-files", "--name-only", "-z", "--", "."])], {
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+ cwd: state.directory,
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+ }),
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+ git([...quote, ...args(["ls-files", "--others", "--exclude-standard", "-z", "--", "."])], {
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+ cwd: state.directory,
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+ }),
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+ ],
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+ { concurrency: 2 },
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+ )
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+ if (diff.code !== 0 || other.code !== 0) {
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+ log.warn("failed to list snapshot files", {
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+ diffCode: diff.code,
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+ diffStderr: diff.stderr,
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+ otherCode: other.code,
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+ otherStderr: other.stderr,
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+ })
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+ return
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+ }
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+
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+ const tracked = diff.text.split("\0").filter(Boolean)
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+ const untracked = other.text.split("\0").filter(Boolean)
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+ const all = Array.from(new Set([...tracked, ...untracked]))
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+ if (!all.length) return
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+
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+ // Resolve source-repo ignore rules against the exact candidate set.
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+ // --no-index keeps this pattern-based even when a path is already tracked.
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+ const ignored = yield* ignore(all)
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+
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+ // Remove newly-ignored files from snapshot index to prevent re-adding
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+ if (ignored.size > 0) {
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+ const ignoredFiles = Array.from(ignored)
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+ log.info("removing gitignored files from snapshot", { count: ignoredFiles.length })
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+ yield* drop(ignoredFiles)
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+ }
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+
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+ const allow = all.filter((item) => !ignored.has(item))
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+ if (!allow.length) return
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+
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+ const large = new Set(
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+ (yield* Effect.all(
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+ allow.map((item) =>
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+ fs
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+ .stat(path.join(state.directory, item))
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+ .pipe(Effect.catch(() => Effect.void))
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+ .pipe(
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+ Effect.map((stat) => {
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+ if (!stat || stat.type !== "File") return
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+ const size = typeof stat.size === "bigint" ? Number(stat.size) : stat.size
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+ return size > limit ? item : undefined
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+ }),
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+ ),
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+ ),
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+ { concurrency: 8 },
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+ )).filter((item): item is string => Boolean(item)),
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+ )
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+ const block = new Set(untracked.filter((item) => large.has(item)))
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+ yield* sync(Array.from(block))
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+ // Stage only the allowed candidate paths so snapshot updates stay scoped.
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+ yield* stage(allow.filter((item) => !block.has(item)))
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+ })
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+
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+ const cleanup = Effect.fnUntraced(function* () {
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+ return yield* locked(
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+ Effect.gen(function* () {
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+ if (!(yield* enabled())) return
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+ if (!(yield* exists(state.gitdir))) return
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+ const result = yield* git(args(["gc", `--prune=${prune}`]), { cwd: state.directory })
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+ if (result.code !== 0) {
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+ log.warn("cleanup failed", {
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+ exitCode: result.code,
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+ stderr: result.stderr,
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+ })
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+ return
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+ }
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+ log.info("cleanup", { prune })
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+ }),
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+ )
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+ })
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+
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+ const track = Effect.fnUntraced(function* () {
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+ return yield* locked(
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+ Effect.gen(function* () {
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+ if (!(yield* enabled())) return
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+ const existed = yield* exists(state.gitdir)
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+ yield* fs.ensureDir(state.gitdir).pipe(Effect.orDie)
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+ if (!existed) {
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+ yield* git(["init"], {
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+ env: { GIT_DIR: state.gitdir, GIT_WORK_TREE: state.worktree },
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+ })
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+ yield* git(["--git-dir", state.gitdir, "config", "core.autocrlf", "false"])
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+ yield* git(["--git-dir", state.gitdir, "config", "core.longpaths", "true"])
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+ yield* git(["--git-dir", state.gitdir, "config", "core.symlinks", "true"])
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+ yield* git(["--git-dir", state.gitdir, "config", "core.fsmonitor", "false"])
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+ log.info("initialized")
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+ }
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+ yield* add()
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+ const result = yield* git(args(["write-tree"]), { cwd: state.directory })
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+ const hash = result.text.trim()
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+ log.info("tracking", { hash, cwd: state.directory, git: state.gitdir })
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+ return hash
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+ }),
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+ )
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+ })
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+
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+ const patch = Effect.fnUntraced(function* (hash: string) {
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+ return yield* locked(
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+ Effect.gen(function* () {
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+ yield* add()
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+ const result = yield* git(
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+ [...quote, ...args(["diff", "--cached", "--no-ext-diff", "--name-only", hash, "--", "."])],
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+ {
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+ cwd: state.directory,
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+ },
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+ )
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+ if (result.code !== 0) {
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+ log.warn("failed to get diff", { hash, exitCode: result.code })
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+ return { hash, files: [] }
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+ }
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+ const files = result.text
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+ .trim()
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+ .split("\n")
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+ .map((x) => x.trim())
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+ .filter(Boolean)
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+
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+ // Hide ignored-file removals from the user-facing patch output.
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+ const ignored = yield* ignore(files)
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+
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+ return {
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+ hash,
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+ files: files
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+ .filter((item) => !ignored.has(item))
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+ .map((x) => path.join(state.worktree, x).replaceAll("\\", "/")),
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+ }
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+ }),
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+ )
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+ })
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+
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+ const restore = Effect.fnUntraced(function* (snapshot: string) {
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+ return yield* locked(
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+ Effect.gen(function* () {
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+ log.info("restore", { commit: snapshot })
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+ const result = yield* git([...core, ...args(["read-tree", snapshot])], { cwd: state.worktree })
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+ if (result.code === 0) {
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+ const checkout = yield* git([...core, ...args(["checkout-index", "-a", "-f"])], {
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+ cwd: state.worktree,
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+ })
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+ if (checkout.code === 0) return
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+ log.error("failed to restore snapshot", {
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+ snapshot,
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+ exitCode: checkout.code,
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+ stderr: checkout.stderr,
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+ })
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+ return
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+ }
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+ log.error("failed to restore snapshot", {
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+ snapshot,
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+ exitCode: result.code,
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+ stderr: result.stderr,
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+ })
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+ }),
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+ )
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+ })
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+
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+ const revert = Effect.fnUntraced(function* (patches: Patch[]) {
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+ return yield* locked(
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+ Effect.gen(function* () {
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+ const ops: { hash: string; file: string; rel: string }[] = []
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+ const seen = new Set<string>()
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+ for (const item of patches) {
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+ for (const file of item.files) {
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+ if (seen.has(file)) continue
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+ seen.add(file)
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+ ops.push({
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+ hash: item.hash,
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+ file,
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+ rel: path.relative(state.worktree, file).replaceAll("\\", "/"),
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+ })
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+ }
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+ }
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+
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+ const single = Effect.fnUntraced(function* (op: (typeof ops)[number]) {
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+ log.info("reverting", { file: op.file, hash: op.hash })
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+ const result = yield* git([...core, ...args(["checkout", op.hash, "--", op.file])], {
|
|
|
+ cwd: state.worktree,
|
|
|
+ })
|
|
|
+ if (result.code === 0) return
|
|
|
+ const tree = yield* git([...core, ...args(["ls-tree", op.hash, "--", op.rel])], {
|
|
|
+ cwd: state.worktree,
|
|
|
+ })
|
|
|
+ if (tree.code === 0 && tree.text.trim()) {
|
|
|
+ log.info("file existed in snapshot but checkout failed, keeping", { file: op.file, hash: op.hash })
|
|
|
+ return
|
|
|
+ }
|
|
|
+ log.info("file did not exist in snapshot, deleting", { file: op.file, hash: op.hash })
|
|
|
+ yield* remove(op.file)
|
|
|
+ })
|
|
|
+
|
|
|
+ const clash = (a: string, b: string) => a === b || a.startsWith(`${b}/`) || b.startsWith(`${a}/`)
|
|
|
+
|
|
|
+ for (let i = 0; i < ops.length; ) {
|
|
|
+ const first = ops[i]!
|
|
|
+ const run = [first]
|
|
|
+ let j = i + 1
|
|
|
+ // Only batch adjacent files when their paths cannot affect each other.
|
|
|
+ while (j < ops.length && run.length < 100) {
|
|
|
+ const next = ops[j]!
|
|
|
+ if (next.hash !== first.hash) break
|
|
|
+ if (run.some((item) => clash(item.rel, next.rel))) break
|
|
|
+ run.push(next)
|
|
|
+ j += 1
|
|
|
+ }
|
|
|
+
|
|
|
+ if (run.length === 1) {
|
|
|
+ yield* single(first)
|
|
|
+ i = j
|
|
|
+ continue
|
|
|
+ }
|
|
|
+
|
|
|
+ const tree = yield* git(
|
|
|
+ [...core, ...args(["ls-tree", "--name-only", first.hash, "--", ...run.map((item) => item.rel)])],
|
|
|
+ {
|
|
|
+ cwd: state.worktree,
|
|
|
+ },
|
|
|
+ )
|
|
|
+
|
|
|
+ if (tree.code !== 0) {
|
|
|
+ log.info("batched ls-tree failed, falling back to single-file revert", {
|
|
|
+ hash: first.hash,
|
|
|
+ files: run.length,
|
|
|
+ })
|
|
|
+ for (const op of run) {
|
|
|
+ yield* single(op)
|
|
|
+ }
|
|
|
+ i = j
|
|
|
+ continue
|
|
|
+ }
|
|
|
+
|
|
|
+ const have = new Set(
|
|
|
+ tree.text
|
|
|
+ .trim()
|
|
|
+ .split("\n")
|
|
|
+ .map((item) => item.trim())
|
|
|
+ .filter(Boolean),
|
|
|
+ )
|
|
|
+ const list = run.filter((item) => have.has(item.rel))
|
|
|
+ if (list.length) {
|
|
|
+ log.info("reverting", { hash: first.hash, files: list.length })
|
|
|
+ const result = yield* git(
|
|
|
+ [...core, ...args(["checkout", first.hash, "--", ...list.map((item) => item.file)])],
|
|
|
+ {
|
|
|
+ cwd: state.worktree,
|
|
|
+ },
|
|
|
+ )
|
|
|
+ if (result.code !== 0) {
|
|
|
+ log.info("batched checkout failed, falling back to single-file revert", {
|
|
|
+ hash: first.hash,
|
|
|
+ files: list.length,
|
|
|
+ })
|
|
|
+ for (const op of run) {
|
|
|
+ yield* single(op)
|
|
|
+ }
|
|
|
+ i = j
|
|
|
+ continue
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ for (const op of run) {
|
|
|
+ if (have.has(op.rel)) continue
|
|
|
+ log.info("file did not exist in snapshot, deleting", { file: op.file, hash: op.hash })
|
|
|
+ yield* remove(op.file)
|
|
|
+ }
|
|
|
+
|
|
|
+ i = j
|
|
|
+ }
|
|
|
+ }),
|
|
|
+ )
|
|
|
+ })
|
|
|
+
|
|
|
+ const diff = Effect.fnUntraced(function* (hash: string) {
|
|
|
+ return yield* locked(
|
|
|
+ Effect.gen(function* () {
|
|
|
+ yield* add()
|
|
|
+ const result = yield* git([...quote, ...args(["diff", "--cached", "--no-ext-diff", hash, "--", "."])], {
|
|
|
+ cwd: state.worktree,
|
|
|
+ })
|
|
|
+ if (result.code !== 0) {
|
|
|
+ log.warn("failed to get diff", {
|
|
|
+ hash,
|
|
|
+ exitCode: result.code,
|
|
|
+ stderr: result.stderr,
|
|
|
+ })
|
|
|
+ return ""
|
|
|
+ }
|
|
|
+ return result.text.trim()
|
|
|
+ }),
|
|
|
+ )
|
|
|
+ })
|
|
|
+
|
|
|
+ const diffFull = Effect.fnUntraced(function* (from: string, to: string) {
|
|
|
+ return yield* locked(
|
|
|
+ Effect.gen(function* () {
|
|
|
+ type Row = {
|
|
|
+ file: string
|
|
|
+ status: "added" | "deleted" | "modified"
|
|
|
+ binary: boolean
|
|
|
+ additions: number
|
|
|
+ deletions: number
|
|
|
+ }
|
|
|
+
|
|
|
+ type Ref = {
|
|
|
+ file: string
|
|
|
+ side: "before" | "after"
|
|
|
+ ref: string
|
|
|
+ }
|
|
|
+
|
|
|
+ const show = Effect.fnUntraced(function* (row: Row) {
|
|
|
+ if (row.binary) return ["", ""]
|
|
|
+ if (row.status === "added") {
|
|
|
+ return [
|
|
|
+ "",
|
|
|
+ yield* git([...cfg, ...args(["show", `${to}:${row.file}`])]).pipe(Effect.map((item) => item.text)),
|
|
|
+ ]
|
|
|
+ }
|
|
|
+ if (row.status === "deleted") {
|
|
|
+ return [
|
|
|
+ yield* git([...cfg, ...args(["show", `${from}:${row.file}`])]).pipe(
|
|
|
+ Effect.map((item) => item.text),
|
|
|
+ ),
|
|
|
+ "",
|
|
|
+ ]
|
|
|
+ }
|
|
|
+ return yield* Effect.all(
|
|
|
+ [
|
|
|
+ git([...cfg, ...args(["show", `${from}:${row.file}`])]).pipe(Effect.map((item) => item.text)),
|
|
|
+ git([...cfg, ...args(["show", `${to}:${row.file}`])]).pipe(Effect.map((item) => item.text)),
|
|
|
+ ],
|
|
|
+ { concurrency: 2 },
|
|
|
+ )
|
|
|
+ })
|
|
|
+
|
|
|
+ const load = Effect.fnUntraced(
|
|
|
+ function* (rows: Row[]) {
|
|
|
+ const refs = rows.flatMap((row) => {
|
|
|
+ if (row.binary) return []
|
|
|
+ if (row.status === "added")
|
|
|
+ return [{ file: row.file, side: "after", ref: `${to}:${row.file}` } satisfies Ref]
|
|
|
+ if (row.status === "deleted") {
|
|
|
+ return [{ file: row.file, side: "before", ref: `${from}:${row.file}` } satisfies Ref]
|
|
|
+ }
|
|
|
+ return [
|
|
|
+ { file: row.file, side: "before", ref: `${from}:${row.file}` } satisfies Ref,
|
|
|
+ { file: row.file, side: "after", ref: `${to}:${row.file}` } satisfies Ref,
|
|
|
+ ]
|
|
|
+ })
|
|
|
+ if (!refs.length) return new Map<string, { before: string; after: string }>()
|
|
|
+
|
|
|
+ const proc = ChildProcess.make("git", [...cfg, ...args(["cat-file", "--batch"])], {
|
|
|
+ cwd: state.directory,
|
|
|
+ extendEnv: true,
|
|
|
+ stdin: Stream.make(new TextEncoder().encode(refs.map((item) => item.ref).join("\n") + "\n")),
|
|
|
+ })
|
|
|
+ const handle = yield* spawner.spawn(proc)
|
|
|
+ const [out, err] = yield* Effect.all(
|
|
|
+ [Stream.mkUint8Array(handle.stdout), Stream.mkString(Stream.decodeText(handle.stderr))],
|
|
|
+ { concurrency: 2 },
|
|
|
+ )
|
|
|
+ const code = yield* handle.exitCode
|
|
|
+ if (code !== 0) {
|
|
|
+ log.info("git cat-file --batch failed during snapshot diff, falling back to per-file git show", {
|
|
|
+ stderr: err,
|
|
|
+ refs: refs.length,
|
|
|
+ })
|
|
|
+ return
|
|
|
+ }
|
|
|
+
|
|
|
+ const fail = (msg: string, extra?: Record<string, string>) => {
|
|
|
+ log.info(msg, { ...extra, refs: refs.length })
|
|
|
+ return undefined
|
|
|
+ }
|
|
|
+
|
|
|
+ const map = new Map<string, { before: string; after: string }>()
|
|
|
+ const dec = new TextDecoder()
|
|
|
+ let i = 0
|
|
|
+ for (const ref of refs) {
|
|
|
+ let end = i
|
|
|
+ while (end < out.length && out[end] !== 10) end += 1
|
|
|
+ if (end >= out.length) {
|
|
|
+ return fail(
|
|
|
+ "git cat-file --batch returned a truncated header during snapshot diff, falling back to per-file git show",
|
|
|
+ )
|
|
|
+ }
|
|
|
+
|
|
|
+ const head = dec.decode(out.slice(i, end))
|
|
|
+ i = end + 1
|
|
|
+ const hit = map.get(ref.file) ?? { before: "", after: "" }
|
|
|
+ if (head.endsWith(" missing")) {
|
|
|
+ map.set(ref.file, hit)
|
|
|
+ continue
|
|
|
+ }
|
|
|
+
|
|
|
+ const match = head.match(/^[0-9a-f]+ blob (\d+)$/)
|
|
|
+ if (!match) {
|
|
|
+ return fail(
|
|
|
+ "git cat-file --batch returned an unexpected header during snapshot diff, falling back to per-file git show",
|
|
|
+ { head },
|
|
|
+ )
|
|
|
+ }
|
|
|
+
|
|
|
+ const size = Number(match[1])
|
|
|
+ if (!Number.isInteger(size) || size < 0 || i + size >= out.length || out[i + size] !== 10) {
|
|
|
+ return fail(
|
|
|
+ "git cat-file --batch returned truncated content during snapshot diff, falling back to per-file git show",
|
|
|
+ { head },
|
|
|
+ )
|
|
|
+ }
|
|
|
+
|
|
|
+ const text = dec.decode(out.slice(i, i + size))
|
|
|
+ if (ref.side === "before") hit.before = text
|
|
|
+ if (ref.side === "after") hit.after = text
|
|
|
+ map.set(ref.file, hit)
|
|
|
+ i += size + 1
|
|
|
+ }
|
|
|
+
|
|
|
+ if (i !== out.length) {
|
|
|
+ return fail(
|
|
|
+ "git cat-file --batch returned trailing data during snapshot diff, falling back to per-file git show",
|
|
|
+ )
|
|
|
+ }
|
|
|
+
|
|
|
+ return map
|
|
|
+ },
|
|
|
+ Effect.scoped,
|
|
|
+ Effect.catch(() =>
|
|
|
+ Effect.succeed<Map<string, { before: string; after: string }> | undefined>(undefined),
|
|
|
+ ),
|
|
|
+ )
|
|
|
+
|
|
|
+ const result: FileDiff[] = []
|
|
|
+ const status = new Map<string, "added" | "deleted" | "modified">()
|
|
|
+
|
|
|
+ const statuses = yield* git(
|
|
|
+ [...quote, ...args(["diff", "--no-ext-diff", "--name-status", "--no-renames", from, to, "--", "."])],
|
|
|
+ { cwd: state.directory },
|
|
|
+ )
|
|
|
+
|
|
|
+ for (const line of statuses.text.trim().split("\n")) {
|
|
|
+ if (!line) continue
|
|
|
+ const [code, file] = line.split("\t")
|
|
|
+ if (!code || !file) continue
|
|
|
+ status.set(file, code.startsWith("A") ? "added" : code.startsWith("D") ? "deleted" : "modified")
|
|
|
+ }
|
|
|
+
|
|
|
+ const numstat = yield* git(
|
|
|
+ [...quote, ...args(["diff", "--no-ext-diff", "--no-renames", "--numstat", from, to, "--", "."])],
|
|
|
+ {
|
|
|
+ cwd: state.directory,
|
|
|
+ },
|
|
|
+ )
|
|
|
+
|
|
|
+ const rows = numstat.text
|
|
|
+ .trim()
|
|
|
+ .split("\n")
|
|
|
+ .filter(Boolean)
|
|
|
+ .flatMap((line) => {
|
|
|
+ const [adds, dels, file] = line.split("\t")
|
|
|
+ if (!file) return []
|
|
|
+ const binary = adds === "-" && dels === "-"
|
|
|
+ const additions = binary ? 0 : parseInt(adds)
|
|
|
+ const deletions = binary ? 0 : parseInt(dels)
|
|
|
+ return [
|
|
|
+ {
|
|
|
+ file,
|
|
|
+ status: status.get(file) ?? "modified",
|
|
|
+ binary,
|
|
|
+ additions: Number.isFinite(additions) ? additions : 0,
|
|
|
+ deletions: Number.isFinite(deletions) ? deletions : 0,
|
|
|
+ } satisfies Row,
|
|
|
+ ]
|
|
|
+ })
|
|
|
+
|
|
|
+ // Hide ignored-file removals from the user-facing diff output.
|
|
|
+ const ignored = yield* ignore(rows.map((r) => r.file))
|
|
|
+ if (ignored.size > 0) {
|
|
|
+ const filtered = rows.filter((r) => !ignored.has(r.file))
|
|
|
+ rows.length = 0
|
|
|
+ rows.push(...filtered)
|
|
|
+ }
|
|
|
+
|
|
|
+ const step = 100
|
|
|
+ const patch = (file: string, before: string, after: string) =>
|
|
|
+ formatPatch(structuredPatch(file, file, before, after, "", "", { context: Number.MAX_SAFE_INTEGER }))
|
|
|
+
|
|
|
+ for (let i = 0; i < rows.length; i += step) {
|
|
|
+ const run = rows.slice(i, i + step)
|
|
|
+ const text = yield* load(run)
|
|
|
+
|
|
|
+ for (const row of run) {
|
|
|
+ const hit = text?.get(row.file) ?? { before: "", after: "" }
|
|
|
+ const [before, after] = row.binary ? ["", ""] : text ? [hit.before, hit.after] : yield* show(row)
|
|
|
+ result.push({
|
|
|
+ file: row.file,
|
|
|
+ patch: row.binary ? "" : patch(row.file, before, after),
|
|
|
+ additions: row.additions,
|
|
|
+ deletions: row.deletions,
|
|
|
+ status: row.status,
|
|
|
+ })
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ return result
|
|
|
+ }),
|
|
|
+ )
|
|
|
+ })
|
|
|
+
|
|
|
+ yield* cleanup().pipe(
|
|
|
+ Effect.catchCause((cause) => {
|
|
|
+ log.error("cleanup loop failed", { cause: Cause.pretty(cause) })
|
|
|
+ return Effect.void
|
|
|
+ }),
|
|
|
+ Effect.repeat(Schedule.spaced(Duration.hours(1))),
|
|
|
+ Effect.delay(Duration.minutes(1)),
|
|
|
+ Effect.forkScoped,
|
|
|
+ )
|
|
|
+
|
|
|
+ return { cleanup, track, patch, restore, revert, diff, diffFull }
|
|
|
+ }),
|
|
|
+ )
|
|
|
+
|
|
|
+ return Service.of({
|
|
|
+ init: Effect.fn("Snapshot.init")(function* () {
|
|
|
+ yield* InstanceState.get(state)
|
|
|
+ }),
|
|
|
+ cleanup: Effect.fn("Snapshot.cleanup")(function* () {
|
|
|
+ return yield* InstanceState.useEffect(state, (s) => s.cleanup())
|
|
|
+ }),
|
|
|
+ track: Effect.fn("Snapshot.track")(function* () {
|
|
|
+ return yield* InstanceState.useEffect(state, (s) => s.track())
|
|
|
+ }),
|
|
|
+ patch: Effect.fn("Snapshot.patch")(function* (hash: string) {
|
|
|
+ return yield* InstanceState.useEffect(state, (s) => s.patch(hash))
|
|
|
+ }),
|
|
|
+ restore: Effect.fn("Snapshot.restore")(function* (snapshot: string) {
|
|
|
+ return yield* InstanceState.useEffect(state, (s) => s.restore(snapshot))
|
|
|
+ }),
|
|
|
+ revert: Effect.fn("Snapshot.revert")(function* (patches: Patch[]) {
|
|
|
+ return yield* InstanceState.useEffect(state, (s) => s.revert(patches))
|
|
|
+ }),
|
|
|
+ diff: Effect.fn("Snapshot.diff")(function* (hash: string) {
|
|
|
+ return yield* InstanceState.useEffect(state, (s) => s.diff(hash))
|
|
|
+ }),
|
|
|
+ diffFull: Effect.fn("Snapshot.diffFull")(function* (from: string, to: string) {
|
|
|
+ return yield* InstanceState.useEffect(state, (s) => s.diffFull(from, to))
|
|
|
+ }),
|
|
|
+ })
|
|
|
+ }),
|
|
|
+)
|
|
|
+
|
|
|
+export const defaultLayer = layer.pipe(
|
|
|
+ Layer.provide(CrossSpawnSpawner.defaultLayer),
|
|
|
+ Layer.provide(AppFileSystem.defaultLayer),
|
|
|
+ Layer.provide(Config.defaultLayer),
|
|
|
+)
|
|
|
+
|
|
|
+export * as Snapshot from "."
|
Kit Langton