import {  ServerAutomaticUpdateDeferredError,  ServerSelfUpdateError,  type ServerSelfUpdateCapability,  type ServerSelfUpdateInput,  type ServerSelfUpdateProgressStage,  type ServerSelfUpdateResult,} from "@t3tools/contracts";import { HostProcessExecutablePath } from "@t3tools/shared/hostProcess";import { hasAutomaticServerUpdateActiveWork } from "@t3tools/shared/automaticServerUpdate";import { compareSemverVersions } from "@t3tools/shared/semver";import * as Cause from "effect/Cause";import * as Context from "effect/Context";import * as Duration from "effect/Duration";import * as Effect from "effect/Effect";import * as FileSystem from "effect/FileSystem";import * as Layer from "effect/Layer";import * as Path from "effect/Path";import * as Ref from "effect/Ref";import * as Semaphore from "effect/Semaphore"; import * as ServerConfig from "../config.ts";import * as ProcessRunner from "../processRunner.ts";import * as ProjectionSnapshotQuery from "../orchestration/Services/ProjectionSnapshotQuery.ts";import {  ensurePinnedRuntimeInstalled,  PinnedRuntimeInstallError,  PinnedRuntimePreflightBlockedError,} from "./pinnedRuntime.ts";import { decodeServicePreflightResult } from "./servicePreflight.ts";import * as ServiceLauncherClient from "./serviceLauncherClient.ts";import { isExactServiceVersion, SERVICE_LAUNCHER_PROTOCOL } from "./serviceProtocol.ts";import packageJson from "../../package.json" with { type: "json" }; const PREFLIGHT_TIMEOUT = Duration.seconds(30); export function resolveServerSelfUpdateCapability(input: {  readonly desktopManaged: boolean;  readonly launcherManaged: boolean;}): ServerSelfUpdateCapability | null {  if (input.desktopManaged) return "desktop-managed" as const;  return input.launcherManaged ? ("boot-service" as const) : null;} export class ServerSelfUpdate extends Context.Service<  ServerSelfUpdate,  {    readonly update: (      input: ServerSelfUpdateInput,      reportProgress?: (stage: ServerSelfUpdateProgressStage) => Effect.Effect<void>,    ) => Effect.Effect<      ServerSelfUpdateResult,      ServerSelfUpdateError | ServerAutomaticUpdateDeferredError    >;    readonly withCommandAdmission: <A, E, R>(      effect: Effect.Effect<A, E, R>,    ) => Effect.Effect<A, E | ServerSelfUpdateError, R>;  }>()("t3/cloud/selfUpdate/ServerSelfUpdate") {} export class ServerSelfUpdateIdleCheck extends Context.Service<  ServerSelfUpdateIdleCheck,  {    readonly assertIdle: (      targetVersion: string,    ) => Effect.Effect<void, ServerSelfUpdateError | ServerAutomaticUpdateDeferredError>;  }>()("t3/cloud/selfUpdate/ServerSelfUpdateIdleCheck") {} const idleCheckLayer = Layer.effect(  ServerSelfUpdateIdleCheck,  Effect.gen(function* () {    const projections = yield* ProjectionSnapshotQuery.ProjectionSnapshotQuery;    return ServerSelfUpdateIdleCheck.of({      assertIdle: (targetVersion) =>        projections.getShellSnapshot().pipe(          Effect.mapError(            (cause) =>              new ServerSelfUpdateError({                reason: "Automatic update could not verify that this server is idle.",                cause,              }),          ),          Effect.flatMap((snapshot) =>            hasAutomaticServerUpdateActiveWork(snapshot.threads)              ? new ServerAutomaticUpdateDeferredError({                  reason: "new work started while downloading",                  targetVersion,                })              : Effect.void,          ),        ),    });  }),); export const make = Effect.fn("cloud.server_self_update.make")(function* () {  const serverConfig = yield* ServerConfig.ServerConfig;  const launcher = yield* ServiceLauncherClient.ServiceLauncherClient;  const runner = yield* ProcessRunner.ProcessRunner;  const fs = yield* FileSystem.FileSystem;  const path = yield* Path.Path;  const execPath = yield* HostProcessExecutablePath;  const idleCheck = yield* ServerSelfUpdateIdleCheck;  const inFlight = yield* Ref.make(false);  const lastFailedTarget = yield* Ref.make<string | null>(null);  const automaticHandoffPending = yield* Ref.make(false);  const commandAdmission = yield* Semaphore.make(1);   const withCommandAdmission = <A, E, R>(    effect: Effect.Effect<A, E, R>,  ): Effect.Effect<A, E | ServerSelfUpdateError, R> => {    const admitted = Ref.get(automaticHandoffPending).pipe(      Effect.flatMap((blocked): Effect.Effect<A, E | ServerSelfUpdateError, R> => {        if (!blocked) return effect as Effect.Effect<A, E | ServerSelfUpdateError, R>;        return Effect.fail(          new ServerSelfUpdateError({            reason: "The server is activating an automatic update and cannot start new work.",          }),        );      }),    );    return commandAdmission.withPermits(1)(admitted);  };   const capability: ServerSelfUpdateCapability | null =    serverConfig.mode === "desktop" ? "desktop-managed" : launcher.managed ? "boot-service" : null;  const failWith = (reason: string, cause?: unknown) =>    cause === undefined      ? new ServerSelfUpdateError({ reason })      : new ServerSelfUpdateError({ reason, cause });   const update: ServerSelfUpdate["Service"]["update"] = Effect.fn(    "cloud.server_self_update.update",  )(function* (input, reportProgress = () => Effect.void) {    if (capability === "desktop-managed") {      return yield* failWith(        "This server is managed by the T3 Code desktop app on its machine; update the desktop app to update it.",      );    }    if (capability === null) {      return yield* failWith(        "Remote updates require the T3 Code background service. Run `t3 service install` on the server machine.",      );    }     const targetVersion = input.targetVersion.trim();    if (!isExactServiceVersion(targetVersion)) {      return yield* failWith(`'${targetVersion}' is not an exact t3 version.`);    }    if (      input.automatic === true &&      compareSemverVersions(targetVersion, packageJson.version) <= 0    ) {      return yield* failWith("Automatic updates must move the server to a newer version.");    }    const previousFailedTarget = yield* Ref.get(lastFailedTarget);    if (input.automatic === true && previousFailedTarget === targetVersion) {      return yield* failWith(        "An automatic update to this version already failed. Retry it manually before automatic updates resume.",      );    }    if (yield* Ref.getAndSet(inFlight, true)) {      return yield* failWith("A server update is already in progress.");    }    let automaticUpdateDeferred = false;    const operation = Effect.gen(function* () {      if (input.automatic !== true && previousFailedTarget === targetVersion) {        yield* Ref.set(lastFailedTarget, null);      }      yield* reportProgress("downloading");      const paths = yield* ensurePinnedRuntimeInstalled({        baseDir: serverConfig.baseDir,        version: targetVersion,        fs,        path,        runner,        validate: (runtime) =>          runner            .run({              command: execPath,              args: [                runtime.entryPath,                "__service-preflight",                "--database-path",                serverConfig.dbPath,                "--launcher-protocol",                String(SERVICE_LAUNCHER_PROTOCOL),              ],              timeout: PREFLIGHT_TIMEOUT,            })            .pipe(              Effect.mapError(                (cause) =>                  new PinnedRuntimeInstallError({                    step: "running the staged service preflight",                    cause,                  }),              ),              Effect.flatMap(                (                  result,                ): Effect.Effect<                  void,                  PinnedRuntimeInstallError | PinnedRuntimePreflightBlockedError                > => {                  if (result.code !== 0) {                    return Effect.fail(                      new PinnedRuntimeInstallError({                        step: "running the staged service preflight",                        exitCode: Number(result.code),                        stdoutLength: result.stdout.length,                        stderrLength: result.stderr.length,                      }),                    );                  }                  let parsed: unknown;                  try {                    parsed = JSON.parse(result.stdout.trim());                  } catch (cause) {                    return Effect.fail(                      new PinnedRuntimeInstallError({                        step: "decoding the staged service preflight",                        cause,                      }),                    );                  }                  const preflight = decodeServicePreflightResult(parsed);                  if (preflight === undefined || preflight.version !== targetVersion) {                    return Effect.fail(                      new PinnedRuntimeInstallError({                        step: "verifying the staged service preflight",                      }),                    );                  }                  return preflight.status === "ready"                    ? Effect.void                    : Effect.fail(                        new PinnedRuntimePreflightBlockedError({                          version: targetVersion,                          reason: preflight.reason,                        }),                      );                },              ),            ),      }).pipe(        Effect.mapError((error) =>          error._tag === "PinnedRuntimePreflightBlockedError"            ? failWith(error.reason, error)            : failWith(`Could not prepare t3@${targetVersion}.`, error),        ),        Effect.interruptible,      );       const activatePreparedUpdate = Effect.gen(function* () {        yield* reportProgress("installing");        const updateId = yield* launcher          .requestUpdate({ targetVersion, dbPath: serverConfig.dbPath })          .pipe(            Effect.mapError((error) =>              failWith(                error._tag === "ServiceLauncherRejectedError"                  ? error.reason                  : "Could not ask the service launcher to activate the prepared update.",                error,              ),            ),          );         yield* Effect.logInfo("Server update prepared; handing off to the service launcher.", {          updateId,          targetVersion,          runtimePath: paths.entryPath,        });        return { targetVersion, method: "boot-service" as const, updateId };      });      if (input.automatic !== true) return yield* activatePreparedUpdate;       return yield* commandAdmission        .withPermits(1)(          Effect.gen(function* () {            yield* idleCheck.assertIdle(targetVersion).pipe(              Effect.catchTags({                ServerAutomaticUpdateDeferredError: (error) =>                  Effect.sync(() => {                    automaticUpdateDeferred = true;                  }).pipe(Effect.andThen(error)),              }),            );            yield* Ref.set(automaticHandoffPending, true);          }),        )        .pipe(Effect.andThen(activatePreparedUpdate));    }).pipe(      Effect.onError((cause) =>        Effect.all(          [            Ref.set(inFlight, false),            Ref.set(automaticHandoffPending, false),            Ref.set(              lastFailedTarget,              automaticUpdateDeferred || Cause.hasInterruptsOnly(cause)                ? previousFailedTarget                : input.automatic === true ||                    previousFailedTarget === null ||                    previousFailedTarget === targetVersion                  ? targetVersion                  : previousFailedTarget,            ),          ],          { discard: true },        ),      ),    );    return yield* input.automatic === true ? Effect.uninterruptible(operation) : operation;  });   return ServerSelfUpdate.of({ update, withCommandAdmission });}); export const layer = Layer.effect(ServerSelfUpdate, make()).pipe(  Layer.provide(ProcessRunner.layer),  Layer.provide(idleCheckLayer),);