import type { ExtensionAPI } from "@earendil-works/pi-coding-agent";
import { initializeAgentsMd } from "./src/init.js";

export default function registerRincoPiRule(pi: ExtensionAPI): void {
  pi.registerCommand("rules:init", {
    description: "detect the project stack and merge vendored ECC rules into AGENTS.md",
    handler: async (args, context) => {
      if (args.trim().length > 0) {
        context.ui.notify("Usage: /rules:init", "warning");
        return;
      }

      try {
        const result = await initializeAgentsMd(context.cwd);
        context.ui.notify(
          `Updated AGENTS.md with ${result.ruleCount} ECC rules (${result.ruleSets.join(", ")}).`,
          "info",
        );
      } catch (error: unknown) {
        const message = error instanceof Error ? error.message : "Unknown error";
        context.ui.notify(`Failed to update AGENTS.md: ${message}`, "error");
      }
    },
  });
}