Illustrate monthly reports and add viewing pattern breakdowns

backend/app/services/email_recaps.py

@@ -142,6 +142,34 @@ def completed_month(month: str | None) -> str:
     return period["month"]
 
 
+async def illustrated_recap(report, account, public_url, unsubscribe_url, *, preview=False, **kwargs):
+    """Embed only signed artwork from this account's report; missing art is optional."""
+    import base64
+    import re
+    from .insights_artwork import get_artwork
+    runtime = get_runtime_settings()
+    images = []
+    report = {**report, "top_titles": [dict(row) for row in report.get("top_titles", [])]}
+
+    async def picture(index, row):
+        match = re.fullmatch(r"/insights/artwork/([a-f0-9]{32})\?token=([0-9]+\.[a-f0-9]{64})", row.get("artwork_url") or "")
+        if not match:
+            return
+        try:
+            data, mime = await get_artwork(account, runtime, *match.groups())
+            cid = f"recap-title-{index}@magent"
+            row["email_artwork"] = f"data:{mime};base64,{base64.b64encode(data).decode()}" if preview else f"cid:{cid}"
+            images.append({"cid": cid, "data": data, "subtype": mime.split("/")[1]})
+        except Exception:
+            pass  # An unavailable poster must never prevent a personal report.
+
+    await asyncio.gather(*(picture(i, row) for i, row in enumerate(report["top_titles"][:3])))
+    rendered = mail.render_recap(report, account["username"], public_url, unsubscribe_url, **kwargs)
+    if not preview:
+        rendered["inline_images"] = images
+    return rendered
+
+
 async def preview(user: dict, month: str | None) -> dict:
     account = current_account(user)
     selected = completed_month(month)
@@ -156,8 +184,8 @@ async def preview(user: dict, month: str | None) -> dict:
         raise RecapError("Your report is temporarily unavailable. Please try again shortly.", 502) from exc
     if report["state"] != "ready":
         raise RecapError("Connect Jellystat and link your Jellyfin account to preview your recap.")
-    return {"month": selected, "email": account.get("email"), **mail.render_recap(
-        report, account["username"], config["public_url"], config["public_url"] + "/profile#monthly-recaps")}
+    return {"month": selected, "email": account.get("email"), **await illustrated_recap(
+        report, account, config["public_url"], config["public_url"] + "/profile#monthly-recaps", preview=True)}
 
 
 def queue_test(user: dict, month: str | None, request_id: str) -> dict:
@@ -200,7 +228,7 @@ async def process_delivery(delivery: dict) -> None:
         if report["state"] != "ready" or (report["is_partial"] and delivery["kind"] != "on_demand"):
             raise mail.DeliveryError("failed", "A complete personal report is not available.")
         unsubscribe = f"{delivery['public_url']}/email-recaps#" + urlencode({"action": "unsubscribe", "token": sub["unsubscribe_token"]})
-        rendered = mail.render_recap(report, account["username"], delivery["public_url"], unsubscribe, test=delivery["kind"] == "test", requested=delivery["kind"] == "on_demand")
+        rendered = await illustrated_recap(report, account, delivery["public_url"], unsubscribe, test=delivery["kind"] == "test", requested=delivery["kind"] == "on_demand")
 
         def before_data():
             eligible_delivery(delivery)