Illustrate monthly reports and add viewing pattern breakdowns

backend/tests/test_report_graphics.py

@@ -0,0 +1,34 @@
+import unittest
+from datetime import timedelta
+from unittest.mock import AsyncMock, patch
+from backend.tests.test_insights import play, NOW, LIBRARIES
+from backend.tests.test_email_recaps import fixture_report
+from backend.app.services.insights import summarize
+from backend.app.services.email_recaps import illustrated_recap
+
+class ReportGraphicsTests(unittest.IsolatedAsyncioTestCase):
+    def test_patterns_deduplicate_and_handle_empty_history(self):
+        first = play()
+        second = play("second", PlaybackDuration=1800, EpisodeId="episode", ActivityDateInserted=(NOW-timedelta(days=1)).isoformat())
+        report = summarize([first, first, second], LIBRARIES, NOW-timedelta(days=7), NOW)
+        self.assertEqual(report["patterns"]["average_play_minutes"], 45)
+        self.assertEqual(report["patterns"]["longest_play_minutes"], 60)
+        self.assertEqual(report["patterns"]["weekend_percent"], 33.3)
+        self.assertEqual(sum(r["minutes"] for r in report["patterns"]["media"]), 90)
+        empty = summarize([], [], NOW-timedelta(days=7), NOW)
+        self.assertEqual(empty["patterns"]["average_play_minutes"], 0)
+
+    async def test_artwork_embedded_without_private_links_and_optional_on_failure(self):
+        report = fixture_report()
+        report["top_titles"][0]["artwork_url"] = "/insights/artwork/" + "a"*32 + "?token=123." + "b"*64
+        with patch("backend.app.services.email_recaps.get_runtime_settings"), patch("backend.app.services.insights_artwork.get_artwork", new=AsyncMock(return_value=(b"picture", "image/webp"))):
+            rendered = await illustrated_recap(report, {"username":"viewer"}, "https://example.test", "https://example.test/unsubscribe")
+            self.assertIn("cid:recap-title-0@magent", rendered["body_html"])
+            self.assertNotIn("?token=", rendered["body_html"])
+            self.assertEqual(rendered["inline_images"][0]["subtype"], "webp")
+            preview = await illustrated_recap(report, {"username":"viewer"}, "https://example.test", "https://example.test/unsubscribe", preview=True)
+            self.assertIn("data:image/webp;base64,", preview["body_html"])
+            self.assertNotIn("inline_images", preview)
+        with patch("backend.app.services.email_recaps.get_runtime_settings"), patch("backend.app.services.insights_artwork.get_artwork", new=AsyncMock(side_effect=RuntimeError())):
+            rendered = await illustrated_recap(report, {"username":"viewer"}, "https://example.test", "https://example.test/unsubscribe")
+            self.assertEqual(rendered["inline_images"], [])