import { EditorSelection } from '@codemirror/state';
import createTestEditor from '../testing/createTestEditor';
import { getFormattedCurrentTime, tryExpandQuickTimestamp } from './quickTimestampExtension';

describe('quickTimestampExtension', () => {
	describe('getFormattedCurrentTime', () => {
		it('formats time to HH:mm with 2-digit padding', () => {
			const testDate = new Date(2026, 10, 1, 9, 5); // 09:05
			expect(getFormattedCurrentTime(testDate)).toBe('09:05');

			const testDateAfternoon = new Date(2026, 10, 1, 16, 30); // 16:30
			expect(getFormattedCurrentTime(testDateAfternoon)).toBe('16:30');
		});
	});

	describe('tryExpandQuickTimestamp', () => {
		it('expands /now with trailing space into [HH:mm] ', async () => {
			const initialText = 'Meeting started /now';
			const editor = await createTestEditor(initialText, EditorSelection.cursor(initialText.length), []);

			const handled = tryExpandQuickTimestamp(editor, initialText.length, initialText.length, ' ');
			expect(handled).toBe(true);

			const expectedTime = getFormattedCurrentTime();
			expect(editor.state.doc.toString()).toBe(`Meeting started [${expectedTime}] `);
		});

		it('expands /time with trailing newline into [HH:mm]\n', async () => {
			const initialText = '- /time';
			const editor = await createTestEditor(initialText, EditorSelection.cursor(initialText.length), []);

			const handled = tryExpandQuickTimestamp(editor, initialText.length, initialText.length, '\n');
			expect(handled).toBe(true);

			const expectedTime = getFormattedCurrentTime();
			expect(editor.state.doc.toString()).toBe(`- [${expectedTime}]\n`);
		});

		it('does not expand unrelated keywords or partial matches', async () => {
			const initialText = 'It is snow';
			const editor = await createTestEditor(initialText, EditorSelection.cursor(initialText.length), []);

			const handled = tryExpandQuickTimestamp(editor, initialText.length, initialText.length, ' ');
			expect(handled).toBe(false);
			expect(editor.state.doc.toString()).toBe('It is snow');
		});
	});
});