import { describe, expect, it, vi } from "vitest";
import { registeredSkillsByName } from "../src/reinject";

describe("registeredSkillsByName", () => {
	it("keeps the first skill when names collide", () => {
		const first = { name: "alpha", filePath: "/a/SKILL.md", baseDir: "/a" };
		const second = { name: "alpha", filePath: "/b/SKILL.md", baseDir: "/b" };

		const byName = registeredSkillsByName([first, second]);

		expect(byName.get("alpha")).toBe(first);
	});

	it("warns once per duplicate name", () => {
		const notify = vi.fn();
		const ctx = { hasUI: true, ui: { notify } } as never;
		const skills = [
			{ name: "alpha", filePath: "/a/SKILL.md", baseDir: "/a" },
			{ name: "alpha", filePath: "/b/SKILL.md", baseDir: "/b" },
			{ name: "alpha", filePath: "/c/SKILL.md", baseDir: "/c" },
		];

		registeredSkillsByName(skills, ctx);

		expect(notify).toHaveBeenCalledTimes(1);
		expect(notify).toHaveBeenCalledWith(
			'skill-reinject: duplicate skill name "alpha" — using first from resourceLoader',
			"warning",
		);
	});
});