import { describe, it, expect } from "vitest";
import { parseTaskFile, serializeTask } from "./markdown";
import { Task } from "@/model/task";

const fullTask: Task = {
	id: "550e8400-e29b-41d4-a716-446655440000",
	title: "Пофиксить баг логина",
	description: "Ошибка валидации токена",
	status: "in-progress",
	priority: "high",
	tags: ["bug", "frontend"],
	assignee: "ivanov",
	created: "2026-07-12T10:00:00.000Z",
	updated: "2026-07-12T10:00:00.000Z",
};

describe("markdown", () => {
	it("parses a .task.md file with full frontmatter", () => {
		const content = [
			"---",
			'id: "550e8400-e29b-41d4-a716-446655440000"',
			'title: "Пофиксить баг логина"',
			"status: in-progress",
			"priority: high",
			"tags: [bug, frontend]",
			'assignee: "ivanov"',
			"created: 2026-07-12T10:00:00.000Z",
			"updated: 2026-07-12T10:00:00.000Z",
			"---",
			"Ошибка валидации токена",
		].join("\n");

		const task = parseTaskFile(content);
		expect(task).toEqual(fullTask);
	});

	it("fills defaults for missing fields", () => {
		const content = [
			"---",
			'id: "abc"',
			'title: "Minimal"',
			"---",
			"",
		].join("\n");

		const task = parseTaskFile(content);
		expect(task.id).toBe("abc");
		expect(task.title).toBe("Minimal");
		expect(task.description).toBe("");
		expect(task.status).toBe("todo");
		expect(task.priority).toBe("medium");
		expect(task.tags).toEqual([]);
		expect(task.assignee).toBe("");
		expect(task.created).toBeTruthy();
		expect(task.updated).toBeTruthy();
	});

	it("serializeTask produces valid frontmatter", () => {
		const result = serializeTask(fullTask);
		expect(result).toContain("---");
		expect(result).toContain("title: Пофиксить баг логина");
		expect(result).toContain("status: in-progress");
		expect(result).toContain("Ошибка валидации токена");
	});

	it("round-trip: serialize → parse produces the same task", () => {
		const serialized = serializeTask(fullTask);
		const parsed = parseTaskFile(serialized);
		expect(parsed).toEqual(fullTask);
	});

	it("description with utf-8 survives round-trip", () => {
		const task: Task = {
			...fullTask,
			description: "Тестовая задача с кириллицей\nи переносом строки",
		};
		const serialized = serializeTask(task);
		const parsed = parseTaskFile(serialized);
		expect(parsed.description).toBe(task.description);
	});
});