SilverBullet pivot to become an offline-first PWA (#403)

web/syscalls/shell.ts

@@ -0,0 +1,34 @@
+import { HttpSpacePrimitives } from "../../common/spaces/http_space_primitives.ts";
+import { SysCallMapping } from "../../plugos/system.ts";
+
+export function shellSyscalls(
+  httpSpacePrimitives?: HttpSpacePrimitives,
+): SysCallMapping {
+  return {
+    "shell.run": async (
+      _ctx,
+      cmd: string,
+      args: string[],
+    ): Promise<{ stdout: string; stderr: string; code: number }> => {
+      if (!httpSpacePrimitives) {
+        throw new Error("Not supported in fully local mode");
+      }
+      const resp = httpSpacePrimitives.authenticatedFetch(
+        httpSpacePrimitives.url,
+        {
+          method: "POST",
+          body: JSON.stringify({
+            operation: "shell",
+            cmd,
+            args,
+          }),
+        },
+      );
+      const { code, stderr, stdout } = await (await resp).json();
+      if (code !== 0) {
+        throw new Error(stderr);
+      }
+      return { code, stderr, stdout };
+    },
+  };
+}