import { describe, expect, it } from "vitest";
import {
	detectSlashSkill,
	matchReadPathToSkill,
	matchReadPathToSkillWhenEnabled,
	parseSkillBlocksFromText,
	type SkillPathMeta,
} from "../src/detect";

const sampleSkills: SkillPathMeta[] = [
	{
		name: "brave-search",
		filePath: "/home/user/.pi/skills/brave-search/SKILL.md",
		baseDir: "/home/user/.pi/skills/brave-search",
	},
	{
		name: "pdf-tools",
		filePath: "/proj/.pi/skills/pdf-tools/SKILL.md",
		baseDir: "/proj/.pi/skills/pdf-tools",
	},
];

describe("detectSlashSkill", () => {
	it("detects slash command at start of text", () => {
		expect(detectSlashSkill("/skill:brave-search")).toBe("brave-search");
		expect(detectSlashSkill("/skill:pdf-tools extract pages")).toBe("pdf-tools");
	});

	it("returns null for non-slash or invalid names", () => {
		expect(detectSlashSkill("hello")).toBeNull();
		expect(detectSlashSkill(" /skill:foo")).toBeNull();
		expect(detectSlashSkill("/skill:Bad_Name")).toBeNull();
	});
});

describe("parseSkillBlocksFromText", () => {
	const block =
		'<skill name="brave-search" location="/home/user/.pi/skills/brave-search/SKILL.md">\nbody\n</skill>';

	it("parses one or more skill blocks", () => {
		expect(parseSkillBlocksFromText(block)).toEqual([
			{
				name: "brave-search",
				location: "/home/user/.pi/skills/brave-search/SKILL.md",
				content: "body",
			},
		]);
		expect(parseSkillBlocksFromText(`${block}\n\n${block.replace("brave-search", "pdf-tools")}`)).toHaveLength(2);
	});

	it("returns empty array when no blocks", () => {
		expect(parseSkillBlocksFromText("plain text")).toEqual([]);
		expect(parseSkillBlocksFromText('<skill name="x"')).toEqual([]);
	});
});

describe("matchReadPathToSkill", () => {
	it("matches absolute skill filePath", () => {
		expect(matchReadPathToSkill("/home/user/.pi/skills/brave-search/SKILL.md", sampleSkills)?.name).toBe(
			"brave-search",
		);
	});

	it("matches relative path via skill baseDir", () => {
		expect(matchReadPathToSkill("SKILL.md", [sampleSkills[0]])?.name).toBe("brave-search");
	});

	it("returns null for unrelated paths", () => {
		expect(matchReadPathToSkill("/tmp/README.md", sampleSkills)).toBeNull();
	});
});

describe("matchReadPathToSkillWhenEnabled", () => {
	it("skips read detection when trackReadPaths is false", () => {
		expect(
			matchReadPathToSkillWhenEnabled("/home/user/.pi/skills/brave-search/SKILL.md", sampleSkills, false),
		).toBeNull();
	});

	it("delegates to matchReadPathToSkill when enabled", () => {
		expect(
			matchReadPathToSkillWhenEnabled("/home/user/.pi/skills/brave-search/SKILL.md", sampleSkills, true)?.name,
		).toBe("brave-search");
	});
});