/**
 * Basic ScheduleService Tests
 * Tests for core functionality
 */

const fs = require("fs");
const ScheduleService = require("../../../src/tui/services/ScheduleService");

describe("ScheduleService Basic Tests", () => {
	let scheduleService;
	const testSchedulesFile = "test-schedules-basic.json";

	beforeEach(() => {
		scheduleService = new ScheduleService();
		scheduleService.schedulesFile = testSchedulesFile;
		scheduleService.lockFile = `${testSchedulesFile}.lock`;

		// Clean up any existing test files
		try {
			fs.unlinkSync(testSchedulesFile);
		} catch (error) {
			// File doesn't exist, which is fine
		}
	});

	afterEach(() => {
		// Remove test files
		try {
			fs.unlinkSync(testSchedulesFile);
		} catch (error) {
			// File doesn't exist, which is fine
		}
	});

	test("should validate schedule data", () => {
		const validSchedule = {
			operationType: "update",
			scheduledTime: new Date(Date.now() + 86400000).toISOString(),
			recurrence: "once",
			description: "Test schedule",
		};

		expect(() =>
			scheduleService.validateScheduleData(validSchedule)
		).not.toThrow();
	});

	test("should reject invalid operation types", () => {
		const invalidSchedule = {
			operationType: "invalid",
			scheduledTime: new Date(Date.now() + 86400000).toISOString(),
			recurrence: "once",
		};

		expect(() =>
			scheduleService.validateScheduleData(invalidSchedule)
		).toThrow();
	});

	test("should calculate checksum correctly", () => {
		const data = [{ id: "1", name: "test" }];
		const checksum1 = scheduleService.calculateChecksum(data);
		const checksum2 = scheduleService.calculateChecksum(data);

		expect(checksum1).toBe(checksum2);
		expect(typeof checksum1).toBe("string");
		expect(checksum1.length).toBe(32); // MD5 hash length
	});

	test("should provide service statistics", () => {
		const stats = scheduleService.getServiceStats();

		expect(stats).toHaveProperty("schedulesLoaded");
		expect(stats).toHaveProperty("schedulesCount");
		expect(stats).toHaveProperty("activeSchedules");
		expect(stats).toHaveProperty("pendingOperations");
		expect(stats).toHaveProperty("memoryUsage");
	});
});