import {
    CreateCourseValidator,
    UpdateCourseValidator,
    CloneCourseValidator,
    addInstructorCourseValidator,
} from '@/validators/CoursesInstructor.validator';

// ============================================================
// addInstructorCourseValidator
// ============================================================

describe('addInstructorCourseValidator', () => {
    it('should pass with valid user_id and course_id', () => {
        const { error } = addInstructorCourseValidator.validate({
            user_id: 1,
            course_id: 2,
        });
        expect(error).toBeUndefined();
    });

    it('should fail without user_id', () => {
        const { error } = addInstructorCourseValidator.validate({ course_id: 2 });
        expect(error).toBeDefined();
    });

    it('should fail without course_id', () => {
        const { error } = addInstructorCourseValidator.validate({ user_id: 1 });
        expect(error).toBeDefined();
    });
});

// ============================================================
// CreateCourseValidator
// ============================================================

describe('CreateCourseValidator', () => {
    const validPayload = {
        category_id: 1,
        title: { th: 'คอร์สทดสอบ', en: 'Test Course' },
        slug: 'test-course',
        description: { th: 'คำอธิบาย', en: 'Description' },
        price: 500,
        is_free: false,
        have_certificate: true,
    };

    it('should pass with all required fields', () => {
        const { error } = CreateCourseValidator.validate(validPayload);
        expect(error).toBeUndefined();
    });

    it('should fail if title.th is missing', () => {
        const { error } = CreateCourseValidator.validate({
            ...validPayload,
            title: { en: 'Test Course' },
        });
        expect(error).toBeDefined();
    });

    it('should fail if slug is missing', () => {
        const { error } = CreateCourseValidator.validate({
            ...validPayload,
            slug: undefined,
        });
        expect(error).toBeDefined();
    });

    it('should fail if price is missing', () => {
        const { error } = CreateCourseValidator.validate({
            ...validPayload,
            price: undefined,
        });
        expect(error).toBeDefined();
    });

    it('should fail if is_free is missing', () => {
        const { error } = CreateCourseValidator.validate({
            ...validPayload,
            is_free: undefined,
        });
        expect(error).toBeDefined();
    });

    it('should allow price = 0 (free course)', () => {
        const { error } = CreateCourseValidator.validate({
            ...validPayload,
            price: 0,
            is_free: true,
        });
        expect(error).toBeUndefined();
    });
});

// ============================================================
// UpdateCourseValidator
// ============================================================

describe('UpdateCourseValidator', () => {
    it('should pass with empty object (all optional)', () => {
        const { error } = UpdateCourseValidator.validate({});
        expect(error).toBeUndefined();
    });

    it('should pass with partial update', () => {
        const { error } = UpdateCourseValidator.validate({ price: 999 });
        expect(error).toBeUndefined();
    });

    it('should pass with title partial update (th only)', () => {
        const { error } = UpdateCourseValidator.validate({
            title: { th: 'ชื่อใหม่' },
        });
        expect(error).toBeUndefined();
    });
});

// ============================================================
// CloneCourseValidator
// ============================================================

describe('CloneCourseValidator', () => {
    it('should pass with valid title', () => {
        const { error } = CloneCourseValidator.validate({
            title: { th: 'คอร์ส Copy', en: 'Course Copy' },
        });
        expect(error).toBeUndefined();
    });

    it('should fail without title.th', () => {
        const { error } = CloneCourseValidator.validate({
            title: { en: 'Course Copy' },
        });
        expect(error).toBeDefined();
        expect(error?.details[0].message).toMatch(/Thai title is required/i);
    });

    it('should fail without title.en', () => {
        const { error } = CloneCourseValidator.validate({
            title: { th: 'คอร์ส Copy' },
        });
        expect(error).toBeDefined();
        expect(error?.details[0].message).toMatch(/English title is required/i);
    });

    it('should fail without title entirely', () => {
        const { error } = CloneCourseValidator.validate({});
        expect(error).toBeDefined();
        expect(error?.details[0].message).toMatch(/Title is required/i);
    });
});