import { getChinesePinyinInitials, formatChineseDateTitle, searchNotesForMention } from './searchNotesForMention';
import Note from '@joplin/lib/models/Note';
import Folder from '@joplin/lib/models/Folder';

describe('searchNotesForMention', () => {
	describe('getChinesePinyinInitials', () => {
		it('extracts correct pinyin initials from Chinese characters', () => {
			expect(getChinesePinyinInitials('工作周报')).toBe('gzzb');
			expect(getChinesePinyinInitials('学习计划')).toBe('xxjh');
			expect(getChinesePinyinInitials('会议记录')).toBe('hyjl');
			expect(getChinesePinyinInitials('今天日志')).toBe('jtrz');
		});

		it('preserves alphanumeric characters and converts to lowercase', () => {
			expect(getChinesePinyinInitials('2026年OKR目标')).toBe('2026nokrmb');
			expect(getChinesePinyinInitials('Joplin开发')).toBe('joplinkf');
		});
	});

	describe('formatChineseDateTitle', () => {
		it('formats date with correct Chinese weekday', () => {
			// 2026-11-01 is a Sunday
			const timestamp = new Date('2026-11-01T12:00:00Z').getTime();
			const title = formatChineseDateTitle(timestamp);
			expect(title).toMatch(/^2026-11-01 星期/);
		});
	});

	describe('searchNotesForMention query logic', () => {
		const originalDb = Note.db;
		const originalFolderAll = Folder.all;

		beforeEach(() => {
			Folder.all = jest.fn().mockResolvedValue([
				{ id: 'folder-1', title: '工作' },
				{ id: 'folder-2', title: '个人' },
			]);
		});

		afterEach(() => {
			Note.db = originalDb;
			Folder.all = originalFolderAll;
		});

		it('suggests create today note when no note exists for today', async () => {
			Note.db = jest.fn().mockReturnValue({
				selectOne: jest.fn().mockResolvedValue(null),
				selectAll: jest.fn().mockResolvedValue([]),
			}) as any;

			const results = await searchNotesForMention('今天');
			expect(results.length).toBeGreaterThanOrEqual(1);
			expect(results[0].id).toMatch(/^__CREATE_/);
			expect(results[0].parentTitle).toBe('✨ 新建今日日志');
			expect(results[0].section).toBe('📅 日志推荐');
		});

		it('matches existing note and attaches parentTitle folder name', async () => {
			Note.db = jest.fn().mockReturnValue({
				selectOne: jest.fn().mockResolvedValue(null),
				selectAll: jest.fn().mockResolvedValue([
					{ id: 'note-123', title: '项目进度汇报', parent_id: 'folder-1' },
				]),
			}) as any;

			const results = await searchNotesForMention('进度');
			const matched = results.find(r => r.id === 'note-123');
			expect(matched).toBeDefined();
			expect(matched?.title).toBe('项目进度汇报');
			expect(matched?.parentTitle).toBe('工作');
			expect(matched?.section).toBe('📝 关联笔记');
		});

		it('supports direct date input like 2026-12-25 and offers to create or link', async () => {
			Note.db = jest.fn().mockReturnValue({
				selectOne: jest.fn().mockResolvedValue(null),
				selectAll: jest.fn().mockResolvedValue([]),
			}) as any;

			const results = await searchNotesForMention('2026-12-25');
			const dateItem = results.find(r => r.id.includes('2026-12-25'));
			expect(dateItem).toBeDefined();
			expect(dateItem?.parentTitle).toBe('✨ 新建 2026-12-25 日志');
			expect(dateItem?.title).toMatch(/^2026-12-25 星期/);
		});
	});
});