Tasks: import TickTick backup CSV (csv: keys, matched against API rows, rekeyed when the API returns them)

src/lib/server/ticktick.test.ts

@@ -1,6 +1,8 @@
 import { describe, expect, it } from 'vitest';
 import {
 	mapTask,
+	mergeCsv,
+	parseTickTickCsv,
 	moreComplete,
 	normTitle,
 	slugify,
@@ -81,3 +83,58 @@ describe('ticktick mapping', () => {
 		expect(normTitle('Book  haircut!')).toBe('book haircut');
 	});
 });
+
+describe('ticktick backup csv', () => {
+	const csv = [
+		'"Date: 2026-10-24+0000"',
+		'"Status: ',
+		'0 Normal',
+		'2 Completed"',
+		'"Folder Name","List Name","Title","Kind","Tags","Content","Is Check list","Start Date","Due Date","Reminder","Repeat","Priority","Status","Created Time","Completed Time","Order","Timezone","Is All Day","Is Floating","Column Name","Column Order","View Mode","taskId","parentId","projectKind"',
+		'"","Inbox","Known","TEXT","","","N","","","","","0","2","2025-01-01T10:00:00+0000","2025-01-02T10:00:00+0000","0","Europe/Amsterdam","false","false",,,"list","1","","TASK"',
+		'"","Inbox","Old won\'t do","TEXT","a, b","line ""one""\nline two","N","","","","","5","-1","2024-01-01T10:00:00+0000","2024-02-01T10:00:00+0000","0","Europe/Amsterdam","false","false",,,"list","2","1","TASK"',
+		'"Old","Trips","Pack","CHECKLIST","","▫Tea\n▪Jerky\n","Y","","","","","0","0","2023-01-01T10:00:00+0000","","0","Europe/Amsterdam","false","false",,,"list","3","","TASK"',
+		''
+	].join('\n');
+	const api = {
+		projects: [],
+		tasks: [
+			{
+				id: 'api1',
+				projectId: 'inbox9',
+				title: 'Known',
+				status: 2,
+				createdTime: '2025-01-01T10:00:00.000+0000'
+			}
+		]
+	};
+	it('parses the backup, including multi-line quoted fields and checklists', () => {
+		const t = parseTickTickCsv(csv);
+		expect(t).toHaveLength(3);
+		expect(t[1]).toMatchObject({ content: 'line "one"\nline two', tags: ['a', 'b'], status: -1 });
+		expect(t[2].items).toEqual([
+			{ id: 'item1', title: 'Tea', status: 0 },
+			{ id: 'item2', title: 'Jerky', status: 1 }
+		]);
+	});
+	it('skips rows the API already has and keys the rest stably', () => {
+		const a = mergeCsv(api, parseTickTickCsv(csv));
+		const b = mergeCsv(api, parseTickTickCsv(csv));
+		expect(a.report).toMatchObject({
+			csvRows: 3,
+			matchedListTitleCreated: 1,
+			added: 2,
+			newLists: ['Trips']
+		});
+		const added = a.data.tasks.slice(1);
+		expect(added.map((t) => t.id)).toEqual(b.data.tasks.slice(1).map((t) => t.id));
+		expect(added[0].id).toMatch(/^csv:/);
+		expect(added[0]).toMatchObject({ projectId: 'inbox9', parentId: 'api1' });
+		expect(added[1].projectId).toBe('csvlist:Trips');
+		expect(a.data.projects).toContainEqual({
+			id: 'csvlist:Trips',
+			name: 'Old / Trips',
+			closed: true
+		});
+	});
+});