import { beforeEach, describe, expect, it } from "vitest";
import { err, ok } from "neverthrow";
import { InMemoryFileSystem } from "../../tests/helpers/InMemoryFileSystem";
import { AppError } from "@/error";
import { FsTaskRepository } from "@/storage/FsTaskRepository";
import { deleteTask } from "./deleteTask";

describe("deleteTask", () => {
	const folder = "/tasks";
	let repo: FsTaskRepository;

	beforeEach(() => {
		repo = new FsTaskRepository(new InMemoryFileSystem(), ".task.md");
	});

	it("deletes an existing task", async () => {
		const created = await repo.create(folder, {
			title: "To delete",
			description: "",
			status: "todo",
			priority: "medium",
			tags: [],
			assignee: "",
		});

		const result = await deleteTask(repo, {
			folderPath: folder,
			id: created.id,
		});

		expect(result).toEqual(ok(undefined));
		expect(await repo.list(folder)).toEqual([]);
	});

	it("returns not_found for unknown id", async () => {
		const result = await deleteTask(repo, {
			folderPath: folder,
			id: "missing",
		});
		expect(result).toEqual(err(AppError.notFound()));
	});

	it("rejects missing folder", async () => {
		const result = await deleteTask(repo, {
			folderPath: undefined,
			id: "x",
		});
		expect(result).toEqual(err(AppError.noFolder()));
	});

	it("rejects missing id", async () => {
		const result = await deleteTask(repo, {
			folderPath: folder,
			id: undefined,
		});
		expect(result).toEqual(err(AppError.noId()));
	});
});