Refactor HttpApi workspace routing and proxy boundaries (#25006)

packages/opencode/src/server/routes/instance/httpapi/middleware/instance-context.ts

@@ -0,0 +1,55 @@
+import { InstanceRef, WorkspaceRef } from "@/effect/instance-ref"
+import { AppRuntime } from "@/effect/app-runtime"
+import { InstanceBootstrap } from "@/project/bootstrap"
+import { Instance } from "@/project/instance"
+import type { InstanceContext } from "@/project/instance"
+import { Filesystem } from "@/util/filesystem"
+import { Effect, Layer } from "effect"
+import { HttpRouter, HttpServerResponse } from "effect/unstable/http"
+import { HttpApiMiddleware } from "effect/unstable/httpapi"
+import { WorkspaceRouteContext } from "./workspace-routing"
+
+export class InstanceContextMiddleware extends HttpApiMiddleware.Service<
+  InstanceContextMiddleware,
+  {
+    requires: WorkspaceRouteContext
+  }
+>()("@opencode/ExperimentalHttpApiInstanceContext") {}
+
+function decode(input: string): string {
+  try {
+    return decodeURIComponent(input)
+  } catch {
+    return input
+  }
+}
+
+function makeInstanceContext(directory: string): Effect.Effect<InstanceContext> {
+  return Effect.promise(() =>
+    Instance.provide({
+      directory: Filesystem.resolve(decode(directory)),
+      init: () => AppRuntime.runPromise(InstanceBootstrap),
+      fn: () => Instance.current,
+    }),
+  )
+}
+
+function provideInstanceContext<E>(
+  effect: Effect.Effect<HttpServerResponse.HttpServerResponse, E>,
+): Effect.Effect<HttpServerResponse.HttpServerResponse, E, WorkspaceRouteContext> {
+  return Effect.gen(function* () {
+    const route = yield* WorkspaceRouteContext
+    const ctx = yield* makeInstanceContext(route.directory)
+    return yield* effect.pipe(
+      Effect.provideService(InstanceRef, ctx),
+      Effect.provideService(WorkspaceRef, route.workspaceID),
+    )
+  })
+}
+
+export const instanceContextLayer = Layer.succeed(
+  InstanceContextMiddleware,
+  InstanceContextMiddleware.of((effect) => provideInstanceContext(effect)),
+)
+
+export const instanceRouterMiddleware = HttpRouter.middleware()((effect) => provideInstanceContext(effect))