sync

10 files changed, 282 insertions, 0 deletions

diff --git a/js/src/app/index.ts b/js/src/app/index.ts
new file mode 100644
index 000000000..1c063ebd3
--- /dev/null
+++ b/js/src/app/index.ts
@@ -0,0 +1,46 @@
+import fs from "fs/promises";
+import { AppPath } from "./path";
+import { Log } from "../util/log";
+import { Context } from "../util/context";
+
+export namespace App {
+  const log = Log.create({ service: "app" });
+
+  export type Info = Awaited<ReturnType<typeof create>>;
+
+  const ctx = Context.create<Info>("app");
+
+  export async function create(input: { directory: string }) {
+    log.info("creating");
+
+    const dataDir = AppPath.data(input.directory);
+    await fs.mkdir(dataDir, { recursive: true });
+    log.info("created", { path: dataDir });
+
+    const services = new Map<any, any>();
+
+    return {
+      get root() {
+        return input.directory;
+      },
+      service<T extends () => any>(service: any, init: T) {
+        if (!services.has(service)) {
+          log.info("registering service", { name: service });
+          services.set(service, init());
+        }
+        return services.get(service) as ReturnType<T>;
+      },
+    };
+  }
+
+  export function service<T extends () => any>(key: any, init: T) {
+    const app = ctx.use();
+    return app.service(key, init);
+  }
+
+  export async function use() {
+    return ctx.use();
+  }
+
+  export const provide = ctx.provide;
+}
diff --git a/js/src/app/path.ts b/js/src/app/path.ts
new file mode 100644
index 000000000..972d18c41
--- /dev/null
+++ b/js/src/app/path.ts
@@ -0,0 +1,11 @@
+import path from "path";
+
+export namespace AppPath {
+  export function data(input: string) {
+    return path.join(input, ".opencode");
+  }
+
+  export function storage(input: string) {
+    return path.join(data(input), "storage");
+  }
+}
diff --git a/js/src/config/config.ts b/js/src/config/config.ts
new file mode 100644
index 000000000..d76b1a842
--- /dev/null
+++ b/js/src/config/config.ts
@@ -0,0 +1,42 @@
+import path from "node:path";
+import { Log } from "../util/log";
+import { App } from "../app";
+
+export namespace Config {
+  const log = Log.create({ service: "config" });
+
+  // TODO: this should be zod
+  export interface Info {
+    mcp: any; // TODO
+    lsp: any; // TODO
+  }
+
+  function state() {
+    return App.service("config", async () => {
+      const app = await App.use();
+      let result: Info = {
+        mcp: {},
+        lsp: {},
+      };
+      for (const file of ["opencode.jsonc", "opencode.json"]) {
+        const resolved = path.join(app.root, file);
+        log.info("searching", { path: resolved });
+        try {
+          result = await import(path.join(app.root, file)).then(
+            (mod) => mod.default,
+          );
+          log.info("found", { path: resolved });
+          break;
+        } catch (e) {
+          continue;
+        }
+      }
+      log.info("loaded", result);
+      return result;
+    });
+  }
+
+  function get() {
+    return state();
+  }
+}
diff --git a/js/src/id/id.ts b/js/src/id/id.ts
new file mode 100644
index 000000000..a63716041
--- /dev/null
+++ b/js/src/id/id.ts
@@ -0,0 +1,23 @@
+import { ulid } from "ulid";
+import { z } from "zod";
+
+export namespace Identifier {
+  const prefixes = {
+    session: "ses",
+  } as const;
+
+  export function create(
+    prefix: keyof typeof prefixes,
+    given?: string,
+  ): string {
+    if (given) {
+      if (given.startsWith(prefixes[prefix])) return given;
+      throw new Error(`ID ${given} does not start with ${prefixes[prefix]}`);
+    }
+    return [prefixes[prefix], ulid()].join("_");
+  }
+
+  export function schema(prefix: keyof typeof prefixes) {
+    return z.string().startsWith(prefixes[prefix]);
+  }
+}
diff --git a/js/src/index.ts b/js/src/index.ts
new file mode 100644
index 000000000..9ccbfda6c
--- /dev/null
+++ b/js/src/index.ts
@@ -0,0 +1,13 @@
+import { App } from "./app";
+import process from "node:process";
+import { RPC } from "./server/server";
+import { Session } from "./session/session";
+
+const app = await App.create({
+  directory: process.cwd(),
+});
+
+App.provide(app, async () => {
+  const session = await Session.create();
+  const rpc = RPC.listen();
+});
diff --git a/js/src/server/server.ts b/js/src/server/server.ts
new file mode 100644
index 000000000..6266e9421
--- /dev/null
+++ b/js/src/server/server.ts
@@ -0,0 +1,34 @@
+import { Log } from "../util/log";
+
+export namespace RPC {
+  const log = Log.create({ service: "rpc" });
+  const PORT = 16713;
+  export function listen(input?: { port?: number }) {
+    const port = input?.port ?? PORT;
+    log.info("trying", { port });
+    try {
+      const server = Bun.serve({
+        port,
+        websocket: {
+          open() {},
+          message() {},
+        },
+        routes: {
+          "/ws": (req, server) => {
+            if (server.upgrade(req)) return;
+            return new Response("Not a websocket request", { status: 400 });
+          },
+        },
+      });
+      log.info("listening", { port });
+      return {
+        server,
+      };
+    } catch (e: any) {
+      if (e?.code === "EADDRINUSE") {
+        return listen({ port: port + 1 });
+      }
+      throw e;
+    }
+  }
+}
diff --git a/js/src/session/session.ts b/js/src/session/session.ts
new file mode 100644
index 000000000..0925584de
--- /dev/null
+++ b/js/src/session/session.ts
@@ -0,0 +1,22 @@
+import { Identifier } from "../id/id";
+import { Storage } from "../storage/storage";
+import { Log } from "../util/log";
+
+export namespace Session {
+  const log = Log.create({ service: "session" });
+
+  export interface Info {
+    id: string;
+    title: string;
+  }
+
+  export async function create() {
+    const result: Info = {
+      id: Identifier.create("session"),
+      title: "New Session - " + new Date().toISOString(),
+    };
+    log.info("created", result);
+    await Storage.write("session/info/" + result.id, JSON.stringify(result));
+    return result;
+  }
+}
diff --git a/js/src/storage/storage.ts b/js/src/storage/storage.ts
new file mode 100644
index 000000000..b84e089cc
--- /dev/null
+++ b/js/src/storage/storage.ts
@@ -0,0 +1,39 @@
+import { FileStorage } from "@flystorage/file-storage";
+import { LocalStorageAdapter } from "@flystorage/local-fs";
+import fs from "fs/promises";
+import { Log } from "../util/log";
+import { App } from "../app";
+import { AppPath } from "../app/path";
+
+export namespace Storage {
+  const log = Log.create({ service: "storage" });
+
+  function state() {
+    return App.service("storage", async () => {
+      const app = await App.use();
+      const storageDir = AppPath.storage(app.root);
+      await fs.mkdir(storageDir, { recursive: true });
+      const storage = new FileStorage(new LocalStorageAdapter(storageDir));
+      await storage.write("test", "test");
+      log.info("created", { path: storageDir });
+      return {
+        storage,
+      };
+    });
+  }
+
+  function expose<T extends keyof FileStorage>(key: T) {
+    const fn = FileStorage.prototype[key];
+    return async (
+      ...args: Parameters<typeof fn>
+    ): Promise<ReturnType<typeof fn>> => {
+      const { storage } = await state();
+      const match = storage[key];
+      // @ts-ignore
+      return match.call(storage, ...args);
+    };
+  }
+
+  export const write = expose("write");
+  export const read = expose("read");
+}
diff --git a/js/src/util/context.ts b/js/src/util/context.ts
new file mode 100644
index 000000000..ec686293e
--- /dev/null
+++ b/js/src/util/context.ts
@@ -0,0 +1,25 @@
+import { AsyncLocalStorage } from "node:async_hooks";
+
+export namespace Context {
+  export class NotFound extends Error {
+    constructor(public readonly name: string) {
+      super(`No context found for ${name}`);
+    }
+  }
+
+  export function create<T>(name: string) {
+    const storage = new AsyncLocalStorage<T>();
+    return {
+      use() {
+        const result = storage.getStore();
+        if (!result) {
+          throw new NotFound(name);
+        }
+        return result;
+      },
+      provide<R>(value: T, fn: () => R) {
+        return storage.run<R>(value, fn);
+      },
+    };
+  }
+}
diff --git a/js/src/util/log.ts b/js/src/util/log.ts
new file mode 100644
index 000000000..9de4eb495
--- /dev/null
+++ b/js/src/util/log.ts
@@ -0,0 +1,27 @@
+export namespace Log {
+  export function create(tags?: Record<string, any>) {
+    tags = tags || {};
+
+    const result = {
+      info(message?: any, extra?: Record<string, any>) {
+        const prefix = Object.entries({
+          ...tags,
+          ...extra,
+        })
+          .map(([key, value]) => `${key}=${value}`)
+          .join(" ");
+        console.log(prefix, message);
+        return result;
+      },
+      tag(key: string, value: string) {
+        if (tags) tags[key] = value;
+        return result;
+      },
+      clone() {
+        return Log.create({ ...tags });
+      },
+    };
+
+    return result;
+  }
+}