import * as Context from "effect/Context";import * as Clock from "effect/Clock";import * as Duration from "effect/Duration";import * as Effect from "effect/Effect";import * as Layer from "effect/Layer";import * as Option from "effect/Option";import * as Schedule from "effect/Schedule";import type * as Scope from "effect/Scope"; import * as ProjectionSnapshotQuery from "../orchestration/Services/ProjectionSnapshotQuery.ts";import * as ProviderService from "./ProviderService.ts";import * as ProviderSessionDirectory from "./ProviderSessionDirectory.ts"; export class ProviderSessionReaper extends Context.Service<  ProviderSessionReaper,  {    /** Start the background provider session reaper within the provided scope. */    readonly start: () => Effect.Effect<void, never, Scope.Scope>;  }>()("t3/provider/ProviderSessionReaper") {} const DEFAULT_INACTIVITY_THRESHOLD_MS = 30 * 60 * 1000;const DEFAULT_SWEEP_INTERVAL_MS = 5 * 60 * 1000; export interface ProviderSessionReaperOptions {  readonly inactivityThresholdMs?: number;  readonly sweepIntervalMs?: number;} export const make = (options?: ProviderSessionReaperOptions) =>  Effect.gen(function* () {    const providerService = yield* ProviderService.ProviderService;    const directory = yield* ProviderSessionDirectory.ProviderSessionDirectory;    const projectionSnapshotQuery = yield* ProjectionSnapshotQuery.ProjectionSnapshotQuery;     const inactivityThresholdMs = Math.max(      1,      options?.inactivityThresholdMs ?? DEFAULT_INACTIVITY_THRESHOLD_MS,    );    const sweepIntervalMs = Math.max(1, options?.sweepIntervalMs ?? DEFAULT_SWEEP_INTERVAL_MS);     const sweep = Effect.gen(function* () {      const bindings = yield* directory.listBindings();      const now = yield* Clock.currentTimeMillis;      let reapedCount = 0;       for (const binding of bindings) {        if (binding.status === "stopped") {          continue;        }         const lastSeenMs = Date.parse(binding.lastSeenAt);        if (Number.isNaN(lastSeenMs)) {          yield* Effect.logWarning("provider.session.reaper.invalid-last-seen", {            threadId: binding.threadId,            provider: binding.provider,            lastSeenAt: binding.lastSeenAt,          });          continue;        }         const idleDurationMs = now - lastSeenMs;        if (idleDurationMs < inactivityThresholdMs) {          continue;        }         const thread = yield* projectionSnapshotQuery          .getThreadShellById(binding.threadId)          .pipe(Effect.map(Option.getOrUndefined));        if (thread?.session?.activeTurnId != null) {          yield* Effect.logDebug("provider.session.reaper.skipped-active-turn", {            threadId: binding.threadId,            activeTurnId: thread.session.activeTurnId,            idleDurationMs,          });          continue;        }         const reaped = yield* providerService.stopSession({ threadId: binding.threadId }).pipe(          Effect.tap(() =>            Effect.logInfo("provider.session.reaped", {              threadId: binding.threadId,              provider: binding.provider,              idleDurationMs,              reason: "inactivity_threshold",            }),          ),          Effect.as(true),          Effect.catchCause((cause) =>            Effect.logWarning("provider.session.reaper.stop-failed", {              threadId: binding.threadId,              provider: binding.provider,              idleDurationMs,              cause,            }).pipe(Effect.as(false)),          ),        );         if (reaped) {          reapedCount += 1;        }      }       if (reapedCount > 0) {        yield* Effect.logInfo("provider.session.reaper.sweep-complete", {          reapedCount,          totalBindings: bindings.length,        });      }    });     const start: ProviderSessionReaper["Service"]["start"] = () =>      Effect.gen(function* () {        yield* Effect.forkScoped(          sweep.pipe(            Effect.catch((error: unknown) =>              Effect.logWarning("provider.session.reaper.sweep-failed", { error }),            ),            Effect.catchDefect((defect: unknown) =>              Effect.logWarning("provider.session.reaper.sweep-defect", { defect }),            ),            Effect.repeat(Schedule.spaced(Duration.millis(sweepIntervalMs))),          ),        );         yield* Effect.logInfo("provider.session.reaper.started", {          inactivityThresholdMs,          sweepIntervalMs,        });      });     return ProviderSessionReaper.of({ start });  }); export const layer = Layer.effect(ProviderSessionReaper, make());