import { cleanSnippet, formatNoteListDate, reorderNotesWithPinned, NoteListItemEntity } from './noteListSnippetUtils';

describe('noteListSnippetUtils', () => {
	describe('cleanSnippet', () => {
		it('returns empty string for empty or whitespace-only bodies', () => {
			expect(cleanSnippet('')).toBe('');
			expect(cleanSnippet('   \n  \n  ')).toBe('');
		});

		it('strips markdown syntax and returns plain text', () => {
			const body = '# Title\n\nThis is **bold** and *italic* with a [link](https://example.com).';
			expect(cleanSnippet(body, 'Title')).toBe('This is bold and italic with a link.');
		});

		it('skips redundant heading when matching title', () => {
			const body = '# Meeting Notes\n\nDiscussing project roadmap.';
			expect(cleanSnippet(body, 'Meeting Notes')).toBe('Discussing project roadmap.');
		});

		it('strips checklist markers and bullet points', () => {
			const body = '- [ ] First task\n- [x] Second completed task\n* Bullet item';
			expect(cleanSnippet(body)).toBe('First task Second completed task Bullet item');
		});

		it('truncates long text and appends ellipsis', () => {
			const longText = 'A'.repeat(120);
			const snippet = cleanSnippet(longText);
			expect(snippet.length).toBeLessThanOrEqual(72);
			expect(snippet.endsWith('…')).toBe(true);
		});
	});

	describe('formatNoteListDate', () => {
		it('returns empty string when timestamp is 0 or missing', () => {
			expect(formatNoteListDate(0)).toBe('');
		});

		it('formats today timestamp as HH:mm', () => {
			const today = new Date();
			today.setHours(14, 25, 0, 0);
			expect(formatNoteListDate(today.getTime())).toBe('14:25');
		});

		it('formats past year date as YYYY/M/D', () => {
			const past = new Date(2023, 4, 20, 10, 0, 0);
			expect(formatNoteListDate(past.getTime())).toBe('2023/5/20');
		});
	});

	describe('reorderNotesWithPinned', () => {
		it('returns original notes when pinnedNoteIds is empty', () => {
			const notes = [{ id: '1' }, { id: '2' }] as NoteListItemEntity[];
			expect(reorderNotesWithPinned(notes, [])).toEqual(notes);
		});

		it('moves pinned notes to the front with is_pinned flag', () => {
			const notes = [
				{ id: '1', title: 'Note 1' },
				{ id: '2', title: 'Note 2' },
				{ id: '3', title: 'Note 3' },
			] as NoteListItemEntity[];

			const reordered = reorderNotesWithPinned(notes, ['2']);
			expect(reordered.map(n => n.id)).toEqual(['2', '1', '3']);
			expect(reordered[0].is_pinned).toBe(1);
			expect(reordered[1].is_pinned).toBeUndefined();
		});

		it('preserves order of multiple pinned notes', () => {
			const notes = [
				{ id: '1', title: 'Note 1' },
				{ id: '2', title: 'Note 2' },
				{ id: '3', title: 'Note 3' },
			] as NoteListItemEntity[];

			const reordered = reorderNotesWithPinned(notes, ['3', '1']);
			expect(reordered.map(n => n.id)).toEqual(['1', '3', '2']);
			expect(reordered[0].is_pinned).toBe(1);
			expect(reordered[1].is_pinned).toBe(1);
			expect(reordered[2].is_pinned).toBeUndefined();
		});
	});
});