import { describe, expect, it } from 'vitest';
import {
    assignmentTitleRules,
    classRules,
    deadlineRules,
    descriptionRules,
    learningPathRules,
} from '../../src/utils/assignment-rules';

describe('Validation Rules', () => {
    describe('assignmentTitleRules', () => {
        it('should return true for a valid title', () => {
            const result = assignmentTitleRules[0]('Valid Title');
            expect(result).toBe(true);
        });

        it('should return an error message for an empty title', () => {
            const result = assignmentTitleRules[0]('');
            expect(result).toBe('Title cannot be empty.');
        });
    });

    describe('learningPathRules', () => {
        it('should return true for a valid learning path', () => {
            const result = learningPathRules[0]({ hruid: '123', title: 'Path Title' });
            expect(result).toBe(true);
        });

        it('should return an error message for an invalid learning path', () => {
            const result = learningPathRules[0]({ hruid: '', title: '' });
            expect(result).toBe('You must select a learning path.');
        });
    });

    describe('classRules', () => {
        it('should return true for a valid class', () => {
            const result = classRules[0]('Class 1');
            expect(result).toBe(true);
        });

        it('should return an error message for an empty class', () => {
            const result = classRules[0]('');
            expect(result).toBe('You must select at least one class.');
        });
    });

    describe('deadlineRules', () => {
        it('should return true for a valid future deadline', () => {
            const futureDate = new Date(Date.now() + 1000 * 60 * 60).toISOString();
            const result = deadlineRules[0](futureDate);
            expect(result).toBe(true);
        });

        it('should return an error message for a past deadline', () => {
            const pastDate = new Date(Date.now() - 1000 * 60 * 60).toISOString();
            const result = deadlineRules[0](pastDate);
            expect(result).toBe('The deadline must be in the future.');
        });

        it('should return an error message for an invalid date', () => {
            const result = deadlineRules[0]('invalid-date');
            expect(result).toBe('Invalid date or time.');
        });

        it('should return an error message for an empty deadline', () => {
            const result = deadlineRules[0]('');
            expect(result).toBe('You must set a deadline.');
        });
    });

    describe('descriptionRules', () => {
        it('should return true for a valid description', () => {
            const result = descriptionRules[0]('This is a valid description.');
            expect(result).toBe(true);
        });

        it('should return an error message for an empty description', () => {
            const result = descriptionRules[0]('');
            expect(result).toBe('Description cannot be empty.');
        });
    });
});