feat(telemetry): exportTo writes events.jsonl + stats.md (#7 v0.2.3)

src/main/services/TelemetryService.ts

@@ -1,6 +1,7 @@
-import { mkdir, appendFile, readFile, readdir, unlink } from 'node:fs/promises';
+import { mkdir, appendFile, readFile, readdir, unlink, writeFile } from 'node:fs/promises';
 import { join } from 'node:path';
 import { validateEvent, TelemetryEvent } from './telemetryEvents.js';
+import { aggregateStats } from './telemetryStats.js';
 
 const KST_OFFSET_MS = 9 * 60 * 60 * 1000;
 
@@ -105,4 +106,14 @@ export class TelemetryService {
     }
     return events;
   }
+
+  async exportTo(outDir: string): Promise<{ eventCount: number }> {
+    const events = await this.readAllRecent();
+    await mkdir(outDir, { recursive: true });
+    const eventsContent = events.map((e) => JSON.stringify(e)).join('\n') + (events.length > 0 ? '\n' : '');
+    await writeFile(join(outDir, 'events.jsonl'), eventsContent, 'utf8');
+    const stats = aggregateStats(events, this.now());
+    await writeFile(join(outDir, 'stats.md'), stats.md, 'utf8');
+    return { eventCount: stats.eventCount };
+  }
 }

tests/unit/TelemetryService.test.ts

@@ -172,3 +172,38 @@ describe('TelemetryService.readAllRecent', () => {
     expect(await svc.readAllRecent()).toEqual([]);
   });
 });
+
+describe('TelemetryService.exportTo', () => {
+  let dir: string;
+  let outDir: string;
+  beforeEach(() => {
+    dir = mkdtempSync(join(tmpdir(), 'inkling-telem-'));
+    outDir = mkdtempSync(join(tmpdir(), 'inkling-export-'));
+  });
+  afterEach(() => {
+    rmSync(dir, { recursive: true, force: true });
+    rmSync(outDir, { recursive: true, force: true });
+  });
+
+  it('writes events.jsonl (concat) + stats.md to folder', async () => {
+    writeFileSync(join(dir, 'events-2026-05-01.jsonl'),
+      JSON.stringify({ ts: '2026-05-01T00:00:00.000Z', kind: 'capture', payload: { noteId: 'a', rawTextLength: 1, hasMedia: false } }) + '\n');
+    const svc = new TelemetryService(dir, () => new Date('2026-05-01T12:00:00Z'), 14);
+    const r = await svc.exportTo(outDir);
+    expect(r.eventCount).toBe(1);
+    expect(existsSync(join(outDir, 'events.jsonl'))).toBe(true);
+    expect(existsSync(join(outDir, 'stats.md'))).toBe(true);
+    const events = readFileSync(join(outDir, 'events.jsonl'), 'utf8').trim().split('\n');
+    expect(events).toHaveLength(1);
+    const stats = readFileSync(join(outDir, 'stats.md'), 'utf8');
+    expect(stats).toContain('총 이벤트: 1');
+  });
+
+  it('handles empty input — writes 0-event stats', async () => {
+    const svc = new TelemetryService(dir, () => new Date('2026-05-01T12:00:00Z'), 14);
+    const r = await svc.exportTo(outDir);
+    expect(r.eventCount).toBe(0);
+    expect(readFileSync(join(outDir, 'events.jsonl'), 'utf8')).toBe('');
+    expect(readFileSync(join(outDir, 'stats.md'), 'utf8')).toContain('총 이벤트: 0');
+  });
+});