import {
  Agent,
  BasePlugin,
  type PluginResolveHook,
} from "@downcity/agent";

class RoleResolverPlugin extends BasePlugin {
  readonly name = "role_resolver";
  readonly title = "Role Resolver";
  readonly description = "Resolves one final role for a user.";

  private readonly resolveRole: PluginResolveHook = async ({ value }) => {
    const body = value as { userId?: unknown };
    const userId = String(body.userId || "").trim();
    if (!userId) {
      throw new Error("userId is required");
    }
    if (userId === "owner") return "admin";
    return "member";
  };

  readonly resolves = {
    "auth.resolve_role": this.resolveRole,
  };
}

const agent = new Agent({
  id: "repo-helper",
  path: "/path/to/project",
  tools: {},
  plugins: [new RoleResolverPlugin()],
});

const role = await agent.plugins.resolve<{ userId: string }, string>(
  "auth.resolve_role",
  { userId: "owner" },
);