import { prepareItems } from './GenericFunctions';

describe('MongoDB Node: Generic Functions', () => {
	describe('prepareItems', () => {
		it('should select fields', () => {
			const items = [{ json: { name: 'John', age: 30 } }, { json: { name: 'Jane', age: 25 } }];
			const fields = ['name'];

			const result = prepareItems({ items, fields });

			expect(result).toEqual([{ name: 'John' }, { name: 'Jane' }]);
		});

		it('should add updateKey to selected fields', () => {
			const items = [{ json: { name: 'John', age: 30 } }, { json: { name: 'Jane', age: 25 } }];
			const fields = ['age'];
			const updateKey = 'name';

			const result = prepareItems({ items, fields, updateKey });

			expect(result).toEqual([
				{ name: 'John', age: 30 },
				{ name: 'Jane', age: 25 },
			]);
		});

		it('should handle dot notation', () => {
			const items = [{ json: { user: { name: 'John' } } }, { json: { user: { name: 'Jane' } } }];
			const fields = ['user.name'];
			const useDotNotation = true;

			const result = prepareItems({ items, fields, updateKey: '', useDotNotation });

			expect(result).toEqual([{ user: { name: 'John' } }, { user: { name: 'Jane' } }]);
		});

		it('should parse dates', () => {
			const items = [
				{ json: { date: '2023-10-01T00:00:00Z' } },
				{ json: { date: '2023-10-02T00:00:00Z' } },
			];
			const fields = ['date'];
			const dateFields = ['date'];
			const useDotNotation = false;
			const isUpdate = false;
			const result = prepareItems({
				items,
				fields,
				updateKey: '',
				useDotNotation,
				dateFields,
				isUpdate,
			});
			expect(result).toEqual([
				{ date: new Date('2023-10-01T00:00:00Z') },
				{ date: new Date('2023-10-02T00:00:00Z') },
			]);
		});

		it('should handle updates', () => {
			// Should keep dot notation in result to not overwrite the original values
			const items = [
				{ json: { id: 1, user: { name: 'John', age: 30 } } },
				{ json: { id: 2, user: { name: 'Jane', age: 25 } } },
			];
			const fields = ['user.name'];
			const useDotNotation = true;
			const isUpdate = true;
			const result = prepareItems({
				items,
				fields,
				updateKey: '',
				useDotNotation,
				dateFields: [],
				isUpdate,
			});
			expect(result).toEqual([{ 'user.name': 'John' }, { 'user.name': 'Jane' }]);
		});
	});
});