feat(httpapi): bridge file read endpoints (#24098)

7 files changed, 207 insertions, 64 deletions

diff --git a/packages/opencode/specs/effect/http-api.md b/packages/opencode/specs/effect/http-api.md
index 6c80dc65a..771c8b987 100644
--- a/packages/opencode/specs/effect/http-api.md
+++ b/packages/opencode/specs/effect/http-api.md
@@ -412,8 +412,9 @@ Current instance route inventory:
 - `workspace` - `bridged`
   best small reads: `GET /experimental/workspace/adaptor`, `GET /experimental/workspace`, `GET /experimental/workspace/status`
   defer create/remove mutations first
-- `file` - `later`
-  good JSON-only candidate set, but larger than the current first-wave slices
+- `file` - `bridged` (partial)
+  bridged endpoints: `GET /file`, `GET /file/content`, `GET /file/status`
+  defer search endpoints first
 - `mcp` - `later`
   has JSON-only endpoints, but interactive OAuth/auth flows make it a worse early fit
 - `session` - `defer`
@@ -449,7 +450,7 @@ Recommended near-term sequence:
 - [x] port `project` read endpoints (`GET /project`, `GET /project/current`)
 - [x] port `GET /config` full read endpoint
 - [x] port `workspace` read endpoints
-- [ ] port `file` JSON read endpoints
+- [x] port `file` JSON read endpoints
 - [ ] decide when to remove the flag and make Effect routes the default
 
 ## Rule of thumb
diff --git a/packages/opencode/src/file/index.ts b/packages/opencode/src/file/index.ts
index ca791e412..05e2ce359 100644
--- a/packages/opencode/src/file/index.ts
+++ b/packages/opencode/src/file/index.ts
@@ -9,69 +9,63 @@ import { formatPatch, structuredPatch } from "diff"
 import fuzzysort from "fuzzysort"
 import ignore from "ignore"
 import path from "path"
-import z from "zod"
 import { Global } from "../global"
 import { Instance } from "../project/instance"
 import { Log } from "../util"
 import { Protected } from "./protected"
 import { Ripgrep } from "./ripgrep"
-
-export const Info = z
-  .object({
-    path: z.string(),
-    added: z.number().int(),
-    removed: z.number().int(),
-    status: z.enum(["added", "deleted", "modified"]),
-  })
-  .meta({
-    ref: "File",
-  })
-
-export type Info = z.infer<typeof Info>
-
-export const Node = z
-  .object({
-    name: z.string(),
-    path: z.string(),
-    absolute: z.string(),
-    type: z.enum(["file", "directory"]),
-    ignored: z.boolean(),
-  })
-  .meta({
-    ref: "FileNode",
-  })
-export type Node = z.infer<typeof Node>
-
-export const Content = z
-  .object({
-    type: z.enum(["text", "binary"]),
-    content: z.string(),
-    diff: z.string().optional(),
-    patch: z
-      .object({
-        oldFileName: z.string(),
-        newFileName: z.string(),
-        oldHeader: z.string().optional(),
-        newHeader: z.string().optional(),
-        hunks: z.array(
-          z.object({
-            oldStart: z.number(),
-            oldLines: z.number(),
-            newStart: z.number(),
-            newLines: z.number(),
-            lines: z.array(z.string()),
-          }),
-        ),
-        index: z.string().optional(),
-      })
-      .optional(),
-    encoding: z.literal("base64").optional(),
-    mimeType: z.string().optional(),
-  })
-  .meta({
-    ref: "FileContent",
-  })
-export type Content = z.infer<typeof Content>
+import { zod } from "@/util/effect-zod"
+import { type DeepMutable, withStatics } from "@/util/schema"
+
+export const Info = Schema.Struct({
+  path: Schema.String,
+  added: Schema.Int,
+  removed: Schema.Int,
+  status: Schema.Literals(["added", "deleted", "modified"]),
+})
+  .annotate({ identifier: "File" })
+  .pipe(withStatics((s) => ({ zod: zod(s) })))
+export type Info = DeepMutable<Schema.Schema.Type<typeof Info>>
+
+export const Node = Schema.Struct({
+  name: Schema.String,
+  path: Schema.String,
+  absolute: Schema.String,
+  type: Schema.Literals(["file", "directory"]),
+  ignored: Schema.Boolean,
+})
+  .annotate({ identifier: "FileNode" })
+  .pipe(withStatics((s) => ({ zod: zod(s) })))
+export type Node = DeepMutable<Schema.Schema.Type<typeof Node>>
+
+const Hunk = Schema.Struct({
+  oldStart: Schema.Number,
+  oldLines: Schema.Number,
+  newStart: Schema.Number,
+  newLines: Schema.Number,
+  lines: Schema.Array(Schema.String),
+})
+
+const Patch = Schema.Struct({
+  oldFileName: Schema.String,
+  newFileName: Schema.String,
+  oldHeader: Schema.optional(Schema.String),
+  newHeader: Schema.optional(Schema.String),
+  hunks: Schema.Array(Hunk),
+  index: Schema.optional(Schema.String),
+})
+
+export const Content = Schema.Struct({
+  type: Schema.Literals(["text", "binary"]),
+  content: Schema.String,
+  diff: Schema.optional(Schema.String),
+  patch: Schema.optional(Patch),
+  encoding: Schema.optional(Schema.Literal("base64")),
+  mimeType: Schema.optional(Schema.String),
+})
+  .annotate({ identifier: "FileContent" })
+  .pipe(withStatics((s) => ({ zod: zod(s) })))
+export type Content = DeepMutable<Schema.Schema.Type<typeof Content>>
 
 export const Event = {
   Edited: BusEvent.define(
diff --git a/packages/opencode/src/server/routes/instance/file.ts b/packages/opencode/src/server/routes/instance/file.ts
index f92fe6e7e..661322127 100644
--- a/packages/opencode/src/server/routes/instance/file.ts
+++ b/packages/opencode/src/server/routes/instance/file.ts
@@ -117,7 +117,7 @@ export const FileRoutes = lazy(() =>
             description: "Files and directories",
             content: {
               "application/json": {
-                schema: resolver(File.Node.array()),
+                schema: resolver(File.Node.zod.array()),
               },
             },
           },
@@ -146,7 +146,7 @@ export const FileRoutes = lazy(() =>
             description: "File content",
             content: {
               "application/json": {
-                schema: resolver(File.Content),
+                schema: resolver(File.Content.zod),
               },
             },
           },
@@ -175,7 +175,7 @@ export const FileRoutes = lazy(() =>
             description: "File status",
             content: {
               "application/json": {
-                schema: resolver(File.Info.array()),
+                schema: resolver(File.Info.zod.array()),
               },
             },
           },
diff --git a/packages/opencode/src/server/routes/instance/httpapi/file.ts b/packages/opencode/src/server/routes/instance/httpapi/file.ts
new file mode 100644
index 000000000..eaf43862a
--- /dev/null
+++ b/packages/opencode/src/server/routes/instance/httpapi/file.ts
@@ -0,0 +1,84 @@
+import { File } from "@/file"
+import { Effect, Layer, Schema } from "effect"
+import { HttpApi, HttpApiBuilder, HttpApiEndpoint, HttpApiGroup, OpenApi } from "effect/unstable/httpapi"
+
+const FileQuery = Schema.Struct({
+  path: Schema.String,
+})
+
+export const FilePaths = {
+  list: "/file",
+  content: "/file/content",
+  status: "/file/status",
+} as const
+
+export const FileApi = HttpApi.make("file")
+  .add(
+    HttpApiGroup.make("file")
+      .add(
+        HttpApiEndpoint.get("list", FilePaths.list, {
+          query: FileQuery,
+          success: Schema.Array(File.Node),
+        }).annotateMerge(
+          OpenApi.annotations({
+            identifier: "file.list",
+            summary: "List files",
+            description: "List files and directories in a specified path.",
+          }),
+        ),
+        HttpApiEndpoint.get("content", FilePaths.content, {
+          query: FileQuery,
+          success: File.Content,
+        }).annotateMerge(
+          OpenApi.annotations({
+            identifier: "file.read",
+            summary: "Read file",
+            description: "Read the content of a specified file.",
+          }),
+        ),
+        HttpApiEndpoint.get("status", FilePaths.status, {
+          success: Schema.Array(File.Info),
+        }).annotateMerge(
+          OpenApi.annotations({
+            identifier: "file.status",
+            summary: "Get file status",
+            description: "Get the git status of all files in the project.",
+          }),
+        ),
+      )
+      .annotateMerge(
+        OpenApi.annotations({
+          title: "file",
+          description: "Experimental HttpApi file routes.",
+        }),
+      ),
+  )
+  .annotateMerge(
+    OpenApi.annotations({
+      title: "opencode experimental HttpApi",
+      version: "0.0.1",
+      description: "Experimental HttpApi surface for selected instance routes.",
+    }),
+  )
+
+export const fileHandlers = Layer.unwrap(
+  Effect.gen(function* () {
+    const svc = yield* File.Service
+
+    const list = Effect.fn("FileHttpApi.list")(function* (ctx: { query: { path: string } }) {
+      return yield* svc.list(ctx.query.path)
+    })
+
+    const content = Effect.fn("FileHttpApi.content")(function* (ctx: { query: { path: string } }) {
+      return yield* svc.read(ctx.query.path)
+    })
+
+    const status = Effect.fn("FileHttpApi.status")(function* () {
+      return yield* svc.status()
+    })
+
+    return HttpApiBuilder.group(FileApi, "file", (handlers) =>
+      handlers.handle("list", list).handle("content", content).handle("status", status),
+    )
+  }),
+).pipe(Layer.provide(File.defaultLayer))
diff --git a/packages/opencode/src/server/routes/instance/httpapi/server.ts b/packages/opencode/src/server/routes/instance/httpapi/server.ts
index 7b131d400..c57320c10 100644
--- a/packages/opencode/src/server/routes/instance/httpapi/server.ts
+++ b/packages/opencode/src/server/routes/instance/httpapi/server.ts
@@ -10,6 +10,7 @@ import { Instance } from "@/project/instance"
 import { lazy } from "@/util/lazy"
 import { Filesystem } from "@/util"
 import { ConfigApi, configHandlers } from "./config"
+import { FileApi, fileHandlers } from "./file"
 import { PermissionApi, permissionHandlers } from "./permission"
 import { ProjectApi, projectHandlers } from "./project"
 import { ProviderApi, providerHandlers } from "./provider"
@@ -114,9 +115,11 @@ const ProjectSecured = ProjectApi.middleware(Authorization)
 const ProviderSecured = ProviderApi.middleware(Authorization)
 const ConfigSecured = ConfigApi.middleware(Authorization)
 const WorkspaceSecured = WorkspaceApi.middleware(Authorization)
+const FileSecured = FileApi.middleware(Authorization)
 
 export const routes = Layer.mergeAll(
   HttpApiBuilder.layer(ConfigSecured).pipe(Layer.provide(configHandlers)),
+  HttpApiBuilder.layer(FileSecured).pipe(Layer.provide(fileHandlers)),
   HttpApiBuilder.layer(ProjectSecured).pipe(Layer.provide(projectHandlers)),
   HttpApiBuilder.layer(QuestionSecured).pipe(Layer.provide(questionHandlers)),
   HttpApiBuilder.layer(PermissionSecured).pipe(Layer.provide(permissionHandlers)),
diff --git a/packages/opencode/src/server/routes/instance/index.ts b/packages/opencode/src/server/routes/instance/index.ts
index e8a038fab..fba150116 100644
--- a/packages/opencode/src/server/routes/instance/index.ts
+++ b/packages/opencode/src/server/routes/instance/index.ts
@@ -16,6 +16,7 @@ import { QuestionRoutes } from "./question"
 import { PermissionRoutes } from "./permission"
 import { Flag } from "@/flag/flag"
 import { ExperimentalHttpApiServer } from "./httpapi/server"
+import { FilePaths } from "./httpapi/file"
 import { ProjectRoutes } from "./project"
 import { SessionRoutes } from "./session"
 import { PtyRoutes } from "./pty"
@@ -48,6 +49,9 @@ export const InstanceRoutes = (upgrade: UpgradeWebSocket): Hono => {
     app.post("/provider/:providerID/oauth/callback", (c) => handler(c.req.raw, context))
     app.get("/project", (c) => handler(c.req.raw, context))
     app.get("/project/current", (c) => handler(c.req.raw, context))
+    app.get(FilePaths.list, (c) => handler(c.req.raw, context))
+    app.get(FilePaths.content, (c) => handler(c.req.raw, context))
+    app.get(FilePaths.status, (c) => handler(c.req.raw, context))
   }
 
   return app
diff --git a/packages/opencode/test/server/httpapi-file.test.ts b/packages/opencode/test/server/httpapi-file.test.ts
new file mode 100644
index 000000000..5a9058cb6
--- /dev/null
+++ b/packages/opencode/test/server/httpapi-file.test.ts
@@ -0,0 +1,57 @@
+import { afterEach, describe, expect, test } from "bun:test"
+import { Context } from "effect"
+import path from "path"
+import { ExperimentalHttpApiServer } from "../../src/server/routes/instance/httpapi/server"
+import { FilePaths } from "../../src/server/routes/instance/httpapi/file"
+import { Instance } from "../../src/project/instance"
+import { Log } from "../../src/util"
+import { resetDatabase } from "../fixture/db"
+import { tmpdir } from "../fixture/fixture"
+
+void Log.init({ print: false })
+
+const context = Context.empty() as Context.Context<unknown>
+
+function request(route: string, directory: string, query?: Record<string, string>) {
+  const url = new URL(`http://localhost${route}`)
+  for (const [key, value] of Object.entries(query ?? {})) {
+    url.searchParams.set(key, value)
+  }
+  return ExperimentalHttpApiServer.webHandler().handler(
+    new Request(url, {
+      headers: {
+        "x-opencode-directory": directory,
+      },
+    }),
+    context,
+  )
+}
+
+afterEach(async () => {
+  await Instance.disposeAll()
+  await resetDatabase()
+})
+
+describe("file HttpApi", () => {
+  test("serves read endpoints", async () => {
+    await using tmp = await tmpdir({ git: true })
+    await Bun.write(path.join(tmp.path, "hello.txt"), "hello")
+
+    const [list, content, status] = await Promise.all([
+      request(FilePaths.list, tmp.path, { path: "." }),
+      request(FilePaths.content, tmp.path, { path: "hello.txt" }),
+      request(FilePaths.status, tmp.path),
+    ])
+
+    expect(list.status).toBe(200)
+    expect(await list.json()).toContainEqual(
+      expect.objectContaining({ name: "hello.txt", path: "hello.txt", type: "file" }),
+    )
+
+    expect(content.status).toBe(200)
+    expect(await content.json()).toMatchObject({ type: "text", content: "hello" })
+
+    expect(status.status).toBe(200)
+    expect(await status.json()).toContainEqual({ path: "hello.txt", added: 1, removed: 0, status: "added" })
+  })
+})