Merge pull request 'Feature/subscription table' (#2) from feature/subscription-table into main

Reviewed-on: #2

database.sql

@@ -9,4 +9,18 @@ CREATE TABLE `seadex_state` (
   PRIMARY KEY (`id`),
   UNIQUE KEY `uq_user_anilist` (`user_id`,`anilist_id`),
   CONSTRAINT `fk_seadex_state_user` FOREIGN KEY (`user_id`) REFERENCES `users` (`user_id`) ON DELETE CASCADE
-)
+)
+
+CREATE TABLE `seadex_state_subscriptions` (
+  `id` int unsigned NOT NULL AUTO_INCREMENT,
+  `user_id` bigint NOT NULL,
+  `seadex_state_id` int unsigned NOT NULL,
+  `custom_name` varchar(255) DEFAULT NULL,
+  `active` tinyint(1) NOT NULL DEFAULT '1',
+  `created_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
+  PRIMARY KEY (`id`),
+  UNIQUE KEY `uq_user_state` (`user_id`,`seadex_state_id`),
+  KEY `idx_subscriptions_state` (`seadex_state_id`),
+  CONSTRAINT `fk_subscriptions_state` FOREIGN KEY (`seadex_state_id`) REFERENCES `seadex_state` (`id`) ON DELETE CASCADE,
+  CONSTRAINT `fk_subscriptions_user` FOREIGN KEY (`user_id`) REFERENCES `users` (`user_id`) ON DELETE CASCADE
+);

src/anilist_errors.py

@@ -0,0 +1,73 @@
+from typing import ClassVar
+
+
+class AniListError(Exception):
+	"""Base class for every AniList error the API can explain to a client."""
+	status_code: ClassVar[int] = 502
+	code: ClassVar[str] = "sea_upstream_error"
+	client_visible: ClassVar[bool] = False
+
+	@property
+	def client_message(self) -> str:
+		return str(self) if self.client_visible else "The Anilist entry could not be checked right now, please try again later"
+	@property
+	def headers(self) -> dict[str, str]:
+		"""Extra HTTP headers the proxy should send with this error."""
+		return {}
+
+class InvalidAnimeId(AniListError):
+	"""The supplied AniList ID is not a positive integer."""
+	status_code = 422
+	code = "sea_invalid_anilist_id"
+	client_visible = True
+
+	def __init__(self, anilist_id: object):
+		self.anilist_id = anilist_id
+		super().__init__(f"Invalid AniList ID: {anilist_id!r}")
+
+
+class AnimeNotFound(AniListError):
+	"""No anime exists on AniList for this ID."""
+	status_code = 422
+	code = "sea_anime_not_found"
+	client_visible = True
+
+	def __init__(self, anilist_id: int | None):
+		self.anilist_id = anilist_id
+		super().__init__(f"Could not find the anime: {anilist_id}")
+
+
+class MissingAnimeName(AniListError):
+	"""The anime exists but has no usable title."""
+	status_code = 422
+	code = "sea_anime_missing_name"
+	client_visible = True
+
+	def __init__(self, anilist_id: int):
+		self.anilist_id = anilist_id
+		super().__init__(f"Anime exists on AniList but has no name: {anilist_id}")
+
+
+class AniListApiError(AniListError):
+	"""Temporary or unexpected API problem (network, timeout, 5xx, bad response).
+
+	Nothing is wrong with the AniList ID, so retry later.
+	"""
+
+	def __init__(self, detail: str):
+		super().__init__(f"API error: {detail}")
+
+
+class RateLimitedError(AniListError):
+	"""AniList asked us to slow down. Stop the run instead of continuing."""
+	status_code = 503
+	code = "sea_rate_limited"
+
+	def __init__(self, retry_after: int | None = None):
+		self.retry_after = retry_after
+		hint = f", retry after {retry_after}s" if retry_after is not None else ""
+		super().__init__(f"rate limited{hint}")
+
+	@property
+	def headers(self) -> dict[str, str]:
+		return {"Retry-After": str(self.retry_after)} if self.retry_after is not None else {}

src/anilist_query.py

@@ -1,12 +1,24 @@
-"""Look up anime on AniList by ID."""
+"""Look up anime on AniList by ID.
+
+This module wraps AniList's public GraphQL API (https://graphql.anilist.co)
+and exposes one public function, :func:`get_anime_name`, which resolves an
+AniList media ID to the best available display title.
+
+All failures are raised as subclasses of :class:`anilist_errors.AniListError`
+so callers (and the proxy) can handle them in one place. Each error carries a
+``status_code``, a stable ``code`` and a safe ``client_message``; internal
+detail is logged here rather than exposed to clients.
+"""
+
 import requests
 
+from anilist_errors import AniListApiError, AnimeNotFound, InvalidAnimeId, MissingAnimeName, RateLimitedError
 from simple_logger_handler import setup_logger
 
 logger = setup_logger(__name__)
 
 ANILIST_API_URL = "https://graphql.anilist.co"
-DEFAULT_TIMEOUT = 10  # seconds
+DEFAULT_TIMEOUT = 10
 
 _ID_QUERY = """
 query ($id: Int) {
@@ -20,31 +32,50 @@ query ($id: Int) {
 # Preference order when picking a display name.
 _TITLE_PREFERENCE = ("english", "romaji", "native")
 
-
-class AniListError(RuntimeError):
-	"""The AniList request failed (network, HTTP, or GraphQL error)."""
-
-
-class AnimeNotFoundError(AniListError):
-	"""No anime exists on AniList for this ID or name."""
-
-
-class MissingAnimeName(AniListError):
-	"""The anime exists but has no usable title."""
-
-
 def _post(
 	query: str,
 	variables: dict,
 	session: requests.Session | None,
 	timeout: float,
 ) -> dict:
-	"""POST a GraphQL query and return its ``data`` dict.
+	"""POST a GraphQL query to AniList and return the ``data`` part of the reply.
+
+	This is the only function that talks to the network. It translates every
+	way a request can go wrong into a :class:`AniListError` subclass, in this
+	order:
+
+	1. Transport failure (DNS, connection, timeout, ...)  -> ``AniListApiError``
+	2. HTTP 404                                           -> ``AnimeNotFound``
+	3. HTTP 429                                           -> ``RateLimitedError``
+	4. Other HTTP error status or body that isn't JSON    -> ``AniListApiError``
+	5. JSON body that isn't an object                     -> ``AniListApiError``
+	6. GraphQL ``errors`` array present                   -> ``AniListApiError``
+	7. ``data`` present but not an object                 -> ``AniListApiError``
+
+	A missing or ``null`` ``data`` field is not an error here; it is returned
+	as an empty dict and the caller decides what that means.
+
+	Args:
+		query: The GraphQL query string.
+		variables: Variables for the query. The ``"id"`` key, if present, is
+			used to identify the anime in a 404 error.
+		session: Optional ``requests.Session``. When ``None``, a one-off
+			``requests.post`` is used.
+		timeout: Request timeout in seconds.
+
+	Returns:
+		The ``data`` dict from the GraphQL response, or ``{}`` if AniList
+		returned no ``data``.
 
 	Raises:
-		AnimeNotFoundError: AniList answered HTTP 404 (unknown ID).
-		AniListError: Network failure, rate limiting, or any other error.
+		AnimeNotFound: AniList answered HTTP 404 (unknown ID).
+		RateLimitedError: AniList answered HTTP 429. ``retry_after`` is set
+			when the ``Retry-After`` header was a valid integer.
+		AniListApiError: Network failure, non-2xx status, invalid or
+			unexpected JSON, or a GraphQL-level error.
 	"""
+
+	anime_id = variables.get("id")
 	http = session or requests
 	try:
 		response = http.post(
@@ -53,38 +84,69 @@ def _post(
 			timeout=timeout,
 		)
 	except requests.RequestException as e:
-		raise AniListError(f"Request to AniList failed: {type(e).__name__}") from e
+		raise AniListApiError(f"Request to AniList failed: {type(e).__name__}") from e
 
 	if response.status_code == 404:
-		raise AnimeNotFoundError("Not found on AniList")
+		logger.warning("AniList returned 404 for id=%s", anime_id)
+		raise AnimeNotFound(variables.get("id"))
 
 	if response.status_code == 429:
 		retry_after = response.headers.get("Retry-After", "unknown")
-		raise AniListError(f"Rate limited by AniList (retry after {retry_after}s)")
+		logger.warning("Rate limited by AniList on id=%s (Retry-After=%s)", anime_id, retry_after,)
+		raise RateLimitedError(int(retry_after) if retry_after.isdigit() else None)
 
 	try:
 		response.raise_for_status()
 		payload = response.json()
 	except (requests.HTTPError, ValueError) as e:
-		raise AniListError(f"Bad response from AniList: {e}") from e
+		logger.warning("Bad response from AniList: %s", e)
+		raise AniListApiError(f"Bad response from AniList: {e}") from e
+
+	if not isinstance(payload, dict):
+		logger.warning("Unexpected AniList payload type: %s", type(payload).__name__)
+		raise AniListApiError(f"Unexpected response shape: {type(payload).__name__}")
 
 	if errors := payload.get("errors"):
 		messages = "; ".join(str(err.get("message", err)) for err in errors)
-		raise AniListError(f"AniList returned errors: {messages}")
+		raise AniListApiError(f"AniList returned errors: {messages}")
 
-	return payload.get("data") or {}
+	data = payload.get("data")
+	if data is None:
+		logger.debug("AniList response for id=%s had no 'data'; returning empty dict", anime_id)
+		return {}
+	if not isinstance(data, dict):
+		logger.warning("Unexpected 'data' shape for id=%s: %s", anime_id, type(data).__name__,)
+		raise AniListApiError(f"Unexpected 'data' shape: {type(data).__name__}")
 
+	logger.debug("Parsed AniList data for id=%s: keys=%s", anime_id, list(data))
+	return data
 
 def _pick_name(title: dict | None) -> str | None:
-	"""Return the best available title (English, romaji, then native)."""
+	"""Choose the best display name from an AniList ``title`` object.
+
+	Tries each key in ``_TITLE_PREFERENCE`` (English, then romaji, then
+	native) and returns the first one that is non-empty after stripping
+	whitespace. Missing keys, ``None`` values and blank strings are skipped.
+
+	Args:
+		title: The ``title`` object from AniList, e.g.
+			``{"romaji": "...", "english": None, "native": "..."}``.
+			``None`` is treated the same as an empty dict.
+
+	Returns:
+		The chosen title, or ``None`` if no usable title exists.
+	"""
 	title = title or {}
 	for key in _TITLE_PREFERENCE:
 		name = (title.get(key) or "").strip()
 		if name:
+			logger.debug("Picked '%s' title: %r", key, name)
 			return name
+	logger.debug("No usable title among keys %s in %s", _TITLE_PREFERENCE, title)
 	return None
 
 
+
 def get_anime_name(
 	anilist_id: int,
 	*,
@@ -93,38 +155,65 @@ def get_anime_name(
 ) -> str:
 	"""Return the best available title for an AniList anime ID.
 
-	Prefers the English title, then romaji, then native.
+	Validates the ID, queries AniList, and picks a title in the order
+	English, romaji, native. Only media of type ``ANIME`` match; a manga or
+	other media ID is treated as not found.
+
+	Every failure is raised as an :class:`AniListError` subclass, so a single
+	``except AniListError`` is enough to catch them all. Errors with
+	``client_visible = True`` are safe to show to end users; the rest carry
+	internal detail and should only be logged.
 
 	Args:
-		anilist_id: AniList media ID (positive integer).
+		anilist_id: AniList media ID. Must be a positive ``int``
+			(``bool`` is rejected even though it is an ``int`` subclass).
 		session: Optional ``requests.Session`` to reuse connections when
 			looking up many IDs.
-		timeout: Request timeout in seconds.
+		timeout: Request timeout in seconds. Defaults to ``DEFAULT_TIMEOUT``.
+
+	Returns:
+		The anime's display title, stripped of surrounding whitespace.
 
 	Raises:
-		ValueError: ``anilist_id`` is not a positive integer.
-		AnimeNotFoundError: No anime exists for this ID.
-		MissingAnimeName: The anime exists but has no title.
-		AniListError: Network failure, rate limiting, or any other
-			AniList/HTTP error.
-	"""
-	if not isinstance(anilist_id, int) or isinstance(anilist_id, bool) or anilist_id <= 0:
-		raise ValueError(f"anilist_id must be a positive integer, got {anilist_id!r}")
+		InvalidAnimeId: ``anilist_id`` is not a positive integer. No request
+			is made. Client-visible (422).
+		AnimeNotFound: No anime exists for this ID, either via HTTP 404 or
+			an empty ``Media`` result. Client-visible (422).
+		MissingAnimeName: The anime exists but none of its titles are usable.
+			Client-visible (422).
+		RateLimitedError: AniList rate limited the request (503). Callers
+			running in a loop should stop rather than keep going; see
+			``retry_after`` on the exception.
+		AniListApiError: Network failure, timeout, 5xx, malformed response or
+			GraphQL error. Not client-visible (502); safe to retry later.
 
-	try:
-		data = _post(_ID_QUERY, {"id": anilist_id}, session, timeout)
-	except AnimeNotFoundError:
-		raise AnimeNotFoundError(f"No anime found for AniList ID={anilist_id}") from None
+	Example:
+		>>> get_anime_name(1)
+		'Cowboy Bebop'
+	"""
+
+	if not isinstance(anilist_id, int) or isinstance(anilist_id, bool) or anilist_id <= 0:
+		logger.warning("Rejected invalid anilist_id: %r", anilist_id)
+		raise InvalidAnimeId(anilist_id)
+	data = _post(_ID_QUERY, {"id": anilist_id}, session, timeout)
 
 	media = data.get("Media")
 	if not media:
-		raise AnimeNotFoundError(f"No anime found for AniList ID={anilist_id}")
+		logger.warning("AniList returned no Media for anilist_id=%s", anilist_id)
+		raise AnimeNotFound(anilist_id)
 
 	name = _pick_name(media.get("title"))
 	if name is None:
-		raise MissingAnimeName(f"Anime has no title for AniList ID={anilist_id}")
+		logger.warning("Anime anilist_id=%s exists but has no usable title", anilist_id)
+		raise MissingAnimeName(anilist_id)
+
+	logger.info("Resolved anilist_id=%s to %r", anilist_id, name)
 	return name
 
 if __name__ == "__main__":
-	asd = get_anime_name(2002927)
-	print(asd)
+	from anilist_errors import AniListError
+	try:
+		print(get_anime_name(200927))
+		print(get_anime_name(999999))
+	except AniListError as e:
+		print(f"{e.code} ({e.status_code}): {e.client_message}")

src/auth_config.py

@@ -6,8 +6,10 @@ from service_auth import KeySource, ServiceAuth
 class Caller(StrEnum):
 	GATEWAY = "gateway"
 	SCHEDULER = "scheduler"
+	ADMIN = "admin"
 
 auth = ServiceAuth({
 	Caller.GATEWAY: KeySource("GATEWAY_KEY", "/etc/secrets/gateway_key"),
 	Caller.SCHEDULER: KeySource("SCHEDULER_KEY", "/etc/secrets/scheduler_key"),
+	Caller.ADMIN: KeySource("ADMIN_KEY","/etc/secrets/admin_key")
 })

src/handlers.py

@@ -0,0 +1,65 @@
+from fastapi import FastAPI, Request
+from fastapi.exceptions import RequestValidationError
+from fastapi.responses import JSONResponse
+from starlette.middleware.base import BaseHTTPMiddleware
+
+from anilist_errors import AniListError
+from metrics_server import REQUEST_COUNTER
+from simple_logger_handler import setup_logger
+
+logger = setup_logger(__name__)
+
+
+async def anilist_error_handler(request: Request, exc: AniListError):
+	log = logger.warning if exc.client_visible else logger.error
+	log(f"[FastAPI] {request.method} {request.url.path} failed: {exc}")
+	return JSONResponse(
+		status_code=exc.status_code,
+		content={"code": exc.code, "detail": exc.client_message},
+	)
+
+async def validation_error_handler(request: Request, exc: RequestValidationError):
+	errors = exc.errors()
+
+	for err in errors:
+		original = (err.get("ctx") or {}).get("error")
+		if isinstance(original, AniListError):
+			return JSONResponse(
+				status_code=original.status_code,
+				content={"code": original.code, "detail": original.client_message},
+			)
+
+	# Problems in headers, path or query are the calling service's fault, not the user's
+	if any(err["loc"][0] != "body" for err in errors):
+		logger.error(f"[FastAPI] Invalid request from a calling service: {[(e['loc'], e['msg']) for e in errors]}")
+		return JSONResponse(status_code=400, content={"code": "bad_request", "detail": "The request could not be processed"})
+
+	messages = []
+	for err in errors:
+		field = ".".join(str(p) for p in err["loc"] if p != "body")
+		msg = err["msg"].removeprefix("Value error, ")
+		messages.append(f"{field}: {msg}" if field else msg)
+	return JSONResponse(status_code=422, content={"code": "validation_error", "detail": "; ".join(messages)})
+
+
+async def prometheus_middleware(request: Request, call_next):
+	logger.debug(f"[FastAPI] Incoming request: {request.method} {request.url.path}")
+	status = 500
+	try:
+		response = await call_next(request)
+		status = response.status_code
+		logger.debug(f"[FastAPI] Request processed with status {status}")
+	except Exception as e:
+		logger.error(f"[FastAPI] Exception occurred: {e}", exc_info=True)
+		raise
+	finally:
+		REQUEST_COUNTER.labels(request.method, request.url.path, status).inc()
+		logger.debug(f"[FastAPI] Counter incremented for {request.method} {request.url.path} [{status}]")
+	return response
+
+
+def register_handlers(app: FastAPI) -> None:
+	"""Attach the error handlers and the metrics middleware to the app."""
+	app.add_exception_handler(AniListError, anilist_error_handler)
+	app.add_exception_handler(RequestValidationError, validation_error_handler)
+	app.add_middleware(BaseHTTPMiddleware, dispatch=prometheus_middleware)

src/main.py

@@ -5,11 +5,10 @@ from datetime import UTC, datetime
 
 import uvicorn
 from fastapi import APIRouter, Depends, FastAPI, HTTPException, Request
-from pydantic import BaseModel, Field, computed_field
 from seadex import EntryNotFoundError, SeaDexEntry
 from service_auth import UserId
 
-from anilist_query import AniListError, AnimeNotFoundError, MissingAnimeName, get_anime_name
+from anilist_query import get_anime_name
 from auth_config import Caller, auth
 from db_module import (
 	close_connection_pool,
@@ -17,32 +16,16 @@ from db_module import (
 	get_db,
 	start_healthcheck_thread,
 )
-from metrics_server import REQUEST_COUNTER, metrics_api
+from handlers import register_handlers
+from metrics_server import metrics_api
+from models import AnimeCreate, AnimeEntry, AnimeList, AnimeRemove
 from secret_manager import cleanup_secret_files
-from send_notifications import NotificationClient
+from send_notifications import NotificationClient, NotificationError, NotificationUnavailableError
 from simple_logger_handler import LOG_LEVEL, setup_logger
 
 logger = setup_logger(__name__)
 
-class AnimeCreate(BaseModel):
-	anilist_id: int = Field(gt=0)
 
-class AnimeEntry(BaseModel):
-	name: str
-	last_updated: str | None = None
-
-class Counts(BaseModel):
-	active: int
-	inactive: int
-
-class AnimeList(BaseModel):
-	active: list[AnimeEntry] = Field(default_factory=list)
-	inactive: list[AnimeEntry] = Field(default_factory=list)
-
-	@computed_field
-	@property
-	def counts(self) -> Counts:
-		return Counts(active=len(self.active),inactive=len(self.inactive))
 
 @asynccontextmanager
 async def lifespan(app: FastAPI):
@@ -76,25 +59,10 @@ api = FastAPI(
 		dependencies=[Depends(auth.authenticate)],
 )
 
+register_handlers(api)
 user_router = APIRouter(dependencies=[Depends(auth.require(Caller.GATEWAY))])
 scheduler_router = APIRouter(dependencies=[Depends(auth.require(Caller.SCHEDULER))])
-
-@api.middleware("http")
-async def prometheus_middleware(request: Request, call_next):
-	logger.debug(f"[Metrics] Incoming request: {request.method} {request.url.path}")
-	status = 500
-	try:
-		response = await call_next(request)
-		status = response.status_code
-		logger.debug(f"[Metrics] Request processed with status {status}")
-	except Exception:
-		logger.exception("[Metrics] Exception occurred:")
-		raise
-	finally:
-		REQUEST_COUNTER.labels(request.method, request.url.path, status).inc()
-		logger.debug(f"[Metrics] Counter incremented for {request.method} {request.url.path} [{status}]")
-	return response
-
+admin_router = APIRouter(dependencies=[Depends(auth.require(Caller.ADMIN))])
 
 def to_iso(dt: datetime) -> str:
 	return dt.astimezone(UTC).isoformat(timespec="microseconds")
@@ -113,186 +81,280 @@ def check_seadex(request:Request, db=Depends(get_db)):
 
 	with db.cursor() as cursor:
 		cursor.execute(
-			"SELECT id, anilist_id, anime_name, last_updated, user_id "
+			"SELECT id, anilist_id, anime_name, last_updated "
 			"FROM seadex_state WHERE active = 1"
 		)
 		anime = cursor.fetchall()
 
-	cache: dict[int, str | None] = {}
+	logger.debug("[FastAPI] Found %s active anime to check.", len(anime))
+	if not anime:
+		logger.info("[FastAPI] No active Seadex entries")
+		return results
+
 	with SeaDexEntry() as seadex:
-		for row_id, anilist_id, anime_name, last_updated, user_id in anime:
+		for seadex_state_id, anilist_id, anime_name, last_updated in anime:
 			results["checked"] += 1
 			try:
-				if anilist_id not in cache:
-					cache[anilist_id] = check_for_update(seadex, anilist_id)
-				current = cache[anilist_id]
-
+				current = check_for_update(seadex, anilist_id)
 				if current is None:
-					logger.debug(f"[FastAPI] No entry yet for {anime_name} on SeaDex")
+					logger.debug("[FastAPI] No entry yet for Anime: %s on SeaDex", anime_name)
+					continue
+				if current == last_updated:
 					continue
 
-				if current != last_updated:
-					logger.info(
-						f"[FastAPI] {anime_name} updated, Anilist ID: {anilist_id}, User ID: {user_id}"
+				logger.info(
+						"[FastAPI] Anime: %s updated, Anilist ID: %s",
+						anime_name,anilist_id,
 					)
-					request.app.state.notifier.send(
-						title=anime_name,
-						body="SeaDex entry updated",
-						link=f"https://seadex.moe/{anilist_id}/",
-						user_id=user_id,
+				with db.cursor() as cursor:
+					cursor.execute(
+						"SELECT user_id, custom_name "
+						"FROM seadex_state_subscriptions "
+						"WHERE seadex_state_id = %s AND active = 1",
+						(seadex_state_id,),
 					)
+					subscribers = cursor.fetchall()
 
-					with db.cursor() as cursor:
-						cursor.execute(
-							"UPDATE seadex_state SET last_updated = %s WHERE id = %s AND user_id = %s",
-							(current, row_id, user_id),
+				sent = 0
+				failed = 0
+				for user_id, custom_name in subscribers:
+					try:
+						request.app.state.notifier.send(
+							title=custom_name or anime_name,
+							body="SeaDex entry updated",
+							link=f"https://seadex.moe/{anilist_id}/",
+							user_id=user_id,
 						)
-					db.commit()
+						sent += 1
+					except NotificationUnavailableError:
+						failed = len(subscribers) - sent
+						logger.error("[FastAPI] Notifications backend unavailable, skipping "
+									"%s remaining user(s) for Anime: %s",
+									failed, anime_name,
+									)
+						break
+					except NotificationError as e:
+						failed += 1
+						logger.error(
+								"[FastAPI] Failed to send notification to user_id=%s for Anime: %s, status=%s",
+								user_id, anime_name, getattr(e, 'status_code',None),
+								)
+				if subscribers and sent == 0:
+					results["errors"] += 1
+					logger.error("[FastAPI] All notifications failed for Anime: %s, will retry later", anime_name)
+					continue
 
-					logger.debug(
-						f"[FastAPI] Notified and updated db for id={row_id}, "
-						f"Anilist ID={anilist_id}, User ID: {user_id}"
+				with db.cursor() as cursor:
+					cursor.execute(
+						"UPDATE seadex_state SET last_updated = %s WHERE id = %s",
+						(current, seadex_state_id),
 					)
-					results["new"] += 1
+				db.commit()
+				logger.debug("[FastAPI] Notification sent and database updated for Anime: %s", anime_name)
+				results["new"] += 1
 
 			except Exception:
 				db.rollback()
 				results["errors"] += 1
-				logger.exception(f"[FastAPI] Failed for id={row_id} Anilist={anilist_id}, User ID: {user_id}",)
+				logger.exception(
+						"[FastAPI] Failed for id: %s Anilist: %s",
+						seadex_state_id, anilist_id,
+						)
 
 	if results["errors"]:
-		logger.warning(f"[FastAPI] SeaDex check finished with errors: {results}")
+		logger.warning("[FastAPI] SeaDex check finished with errors: %s", results)
 		raise HTTPException(status_code=500, detail=results)
 
-	logger.info(f"[FastAPI] SeaDex check complete: {results}")
+	logger.info("[FastAPI] SeaDex check complete: %s", results)
 	return results
 
-@user_router.post("/add/anime")
-def add_anime(anime: AnimeCreate, user_id: UserId, db=Depends(get_db)):
-	logger.info(f"[FastAPI] Received request to track anilist_id={anime.anilist_id}, user_id={user_id}")
- 
-	try:
-		anime_name = get_anime_name(anime.anilist_id)
-	except AnimeNotFoundError as e:
-		raise HTTPException(status_code=404, detail="Not found on AniList") from e
-	except MissingAnimeName as e:
-		raise HTTPException(status_code=404, detail="The anime exists but has no usable title") from e
-	except AniListError as e:
-		logger.exception("[FastAPI] AniList request failed")
-		raise HTTPException(status_code=502, detail="The AniList request failed") from e
-	logger.debug(f"[FastAPI] Found name={anime_name} for Anilist id={anime.anilist_id}")
+@user_router.post("/anime/add")
+def add_anime(
+	anime: AnimeCreate,
+	user_id: UserId,
+	db=Depends(get_db),
+	):
+	logger.info("[FastAPI] Received request to track anilist_id=%s, user_id=%s", anime.anilist_id, user_id)
+
+	with db.cursor() as cursor:
+		cursor.execute(
+			"SELECT id, active FROM seadex_state WHERE anilist_id = %s",
+			(anime.anilist_id,),
+		)
+		known = cursor.fetchone()
+
+	last_updated = None
+	with SeaDexEntry() as seadex:
+		if known is None:
+			anime_name = get_anime_name(anime.anilist_id)
+			last_updated = check_for_update(seadex, anime.anilist_id)
+		else:
+			anime_name, active = known
+			if not active:
+				last_updated = check_for_update(seadex, anime.anilist_id)
 
 	with db.cursor() as cursor:
 		try:
 			cursor.execute(
-				"SELECT id FROM seadex_state WHERE anilist_id = %s AND user_id = %s",
-				(anime.anilist_id, user_id),
+				"INSERT INTO seadex_state (anilist_id, anime_name, last_updated) "
+				"VALUES (%s, %s, %s) "
+				"ON DUPLICATE KEY UPDATE id = LAST_INSERT_ID(id), active = 1, "
+				"last_updated = COALESCE(VALUES(last_updated), last_updated)",
+				(anime.anilist_id, anime_name, last_updated),
 			)
- 
-			if cursor.fetchone():
-				logger.debug("[FastAPI] Found existing entry, updating name and setting to active")
-				cursor.execute(
-					"UPDATE seadex_state SET anime_name = %s, active = 1 "
-					"WHERE anilist_id = %s AND user_id=%s",
-					(anime_name, anime.anilist_id, user_id),
-				)
-				db.commit()
-				return {
-					"status": "ok",
-					"detail": f"Updated existing entry name={anime_name}, "
-					f"Anilist ID={anime.anilist_id}",
-				}
- 
-			with SeaDexEntry() as seadex:
-				current = check_for_update(seadex, anime.anilist_id)
-			logger.debug(f"[FastAPI] Inserting new anime with last_updated={current}")
+			seadex_state_id = cursor.lastrowid
 
 			cursor.execute(
-				"INSERT INTO seadex_state (anilist_id, anime_name, last_updated, user_id) "
-				"VALUES (%s, %s, %s, %s)",
-				(anime.anilist_id, anime_name, current, user_id),
+				"INSERT INTO seadex_state_subscriptions (user_id, seadex_state_id, custom_name) "
+				"VALUES (%s, %s, %s) "
+				"ON DUPLICATE KEY UPDATE active = 1, custom_name = VALUES(custom_name)",
+				(user_id, seadex_state_id, anime.custom_name or None),
 			)
 			db.commit()
-			return {
-				"status": "ok",
-				"detail": f"Created new entry name={anime_name}, "
-				f"Anilist ID={anime.anilist_id}",
-			}
- 
 		except Exception as e:
 			db.rollback()
-			logger.exception(f"[FastAPI] Failed for anilist_id={anime.anilist_id}, name={anime_name}, user_id={user_id}")
+			logger.exception(
+				"[FastAPI] Failed for anilist_id=%s, name=%s, user_id=%s",
+				anime.anilist_id, anime_name, user_id,
+			)
 			raise HTTPException(status_code=500) from e
 
-@user_router.post("/delete/anime")
-def remove_anime(anime: AnimeCreate, user_id: UserId, db=Depends(get_db)):
-	logger.info(f"[FastAPI] Received request to deactivate tracking for anilist_id={anime.anilist_id}, user_id={user_id}")
+	logger.info(
+		"[FastAPI] Tracking anilist_id=%s name=%r for user_id=%s (state_id=%s)",
+		anime.anilist_id, anime_name, user_id, seadex_state_id,
+	)
+	return {"status": "ok", "detail": f"Tracking name={anime.custom_name or anime_name}, Anilist ID={anime.anilist_id}"}
+
+@user_router.post("/anime/delete")
+def remove_anime(
+	anime: AnimeRemove,
+	user_id: UserId,
+	db=Depends(get_db)
+):
+	logger.info(
+		"[FastAPI] Received request to deactivate anilist_id=%s for user_id=%s",
+		anime.anilist_id, user_id,
+	)
 	with db.cursor() as cursor:
 			try:
 				cursor.execute(
-					"SELECT active FROM seadex_state WHERE anilist_id = %s AND user_id = %s",
-					(anime.anilist_id, user_id),
+					"SELECT id FROM seadex_state "
+					"WHERE anilist_id = %s FOR UPDATE",
+					(anime.anilist_id,),
 				)
-				row = cursor.fetchone()
-				if row and row[0]:
-					cursor.execute(
-						"UPDATE seadex_state SET active = 0 "
-						"WHERE anilist_id = %s AND user_id = %s",
-						(anime.anilist_id, user_id),
-					)
-					db.commit()
-					logger.debug(f"[FastAPI] Successfully deactivated tracking for anilist_id={anime.anilist_id}, user_id={user_id}")
-					return {
-						"status": "ok",
-						"detail": f"Deactivated entry {anime.anilist_id}",
-					}
+				known = cursor.fetchone()
 
+				if known is None:
+					db.rollback()
+					logger.info("[FastAPI] Anime anilist_id=%s is not tracked, nothing to do", anime.anilist_id)
+					return {"status": "ok", "detail": f"Stopped tracking Anilist ID={anime.anilist_id}"}
+
+				seadex_state_id = known[0]
+				cursor.execute(
+					"UPDATE seadex_state_subscriptions SET active = 0 "
+					"WHERE user_id = %s AND seadex_state_id = %s",
+					(user_id, seadex_state_id),
+				)
+
+				cursor.execute(
+					"SELECT 1 from seadex_state_subscriptions "
+					"WHERE seadex_state_id = %s AND active = 1 LIMIT 1",
+					(seadex_state_id,),
+				)
+
+				if cursor.fetchone() is None:
+					cursor.execute(
+						"UPDATE seadex_state SET active = 0 WHERE id = %s",
+						(seadex_state_id,),
+					)
+					logger.info("[FastAPI] No active subscribers left, deactivated state_id=%s", seadex_state_id)
+
+				db.commit()
 			except Exception as e:
 				db.rollback()
-				logger.exception(f"[FastAPI] Failed removeing tracking for id={anime.anilist_id}, user_id={user_id}")
+				logger.exception(
+					"[FastAPI] Failed to unsubscribe anime anilist_id=%s for user_id=%s",
+					anime.anilist_id, user_id,
+				)
 				raise HTTPException(status_code=500) from e
 
-	if row is None:
-		logger.debug(f"[FastAPI] No tracked entry for anilist_id={anime.anilist_id}, user_id={user_id}")
-		raise HTTPException(status_code=404, detail="No tracked entry for this AniList ID")
-	if not row[0]:
-		logger.debug(f"[FastAPI] Tracking was already deactivated for anilist_id={anime.anilist_id}, user_id={user_id}")
-		return {"status": "ok", "detail": f"Entry {anime.anilist_id} was already inactive"}
+	logger.info(
+		"[FastAPI] Successfully deactivated tracking for anilist_id=%s for user_id=%s",
+		anime.anilist_id, user_id,
+	)
+	return {"status": "ok", "detail": f"Stopped tracking Anilist ID={anime.anilist_id}"}
 
-@user_router.get("/list/anime", response_model=AnimeList)
-def list_active_and_inactive_anime(user_id: UserId, db=Depends(get_db)):
-	logger.info(f"[FastAPI] Received request to list anime for User ID = {user_id}")
-	with db.cursor() as cursor:
-		try:
+@user_router.get("/anime/list", response_model=AnimeList)
+def list_active_and_inactive_anime(
+	user_id: UserId,
+	db=Depends(get_db),
+	):
+	logger.info("[FastAPI] Received request to list anime for User ID = %s", user_id)
+
+	try:
+		with db.cursor() as cursor:
 			cursor.execute(
-				"SELECT anime_name, active, last_updated " \
-				"FROM seadex_state WHERE user_id = %s "
-				"ORDER BY anime_name",
+				"SELECT s.custom_name AS custom_name, st.anime_name AS anime_name, "
+				"st.anilist_id, s.active, st.last_updated from seadex_state_subscriptions AS s "
+				"JOIN seadex_state AS st on s.seadex_state_id = st.id "
+				"WHERE s.user_id = %s ORDER BY st.anilist_id",
 				(user_id,),
 			)
 			rows = cursor.fetchall()
-		except Exception as e:
-			logger.exception("[FastAPI] Failed to list anime")
-			raise HTTPException(status_code=500) from e
 
-		anime_list=AnimeList ()
-		for name, is_active, last_updated in rows:
+		anime_list=AnimeList()
+		for custom_name, anime_name, anilist_id, is_active, last_updated in rows:
 			entry = AnimeEntry(
-				name=name,
-				last_updated=None if last_updated is None else str(last_updated),
+				name=custom_name or anime_name,
+				anilist_id=anilist_id,
+				last_updated=None if last_updated is None else last_updated,
 			)
 			(anime_list.active if is_active else anime_list.inactive).append(entry)
-		return anime_list
+	except Exception as e:
+		logger.exception("[FastAPI] Failed to list anime")
+		raise HTTPException(status_code=500) from e
+
+	return anime_list
+
+@admin_router.post("/admin/update/names")
+def update_all_names_to_most_recently_available(db=Depends(get_db)):
+	logger.info("[FastAPI] ADMIN: Got request to update all existing names")
+	try:
+		with db.cursor() as cursor:
+			cursor.execute(
+				"SELECT id, anilist_id from seadex_state"
+			)
+			rows = cursor.fetchall()
+			for id, anilist_id in rows:
+				anime_name = get_anime_name(anilist_id)
+				cursor.execute(
+					"UPDATE seadex_state SET anime_name = %s "
+					"WHERE id = %s",
+					(anime_name,id),
+				)
+				db.commit()
+				logger.info(
+					"[FastAPI] ADMIN: Updated id=%s, anilist_id=%s with name=%s",
+					id, anilist_id, anime_name,
+				)
+	except Exception as e:
+		db.rollback()
+		logger.exception("[FastAPI] ADMIN: Failed to update all existing names")
+		raise HTTPException(status_code=500) from e
+
+	logger.info("[FastAPI] ADMIN: Updated %s entries", len(rows))
+	return {"status": "ok", "detail": f"Updated {len(rows)} entries"}
 
 api.include_router(user_router)
 api.include_router(scheduler_router)
+api.include_router(admin_router)
 
 async def start_servers():
 	logger.info("[Server] Starting main API (port 5000) and metrics server (port 9000)...")
-	logger.info(f"[Server] Build commit id={os.getenv("COMMIT_ID","unknown")}")
+	logger.info("[Server] Build commit id=%s", os.getenv("COMMIT_ID", "unknown"))
 
-	auth.load_keys(api, Caller.GATEWAY, Caller.SCHEDULER)
-	cleanup_secret_files(auth.key_paths(Caller.GATEWAY, Caller.SCHEDULER))
+	auth.load_keys(api, Caller.GATEWAY, Caller.SCHEDULER, Caller.ADMIN)
+	cleanup_secret_files(auth.key_paths(Caller.GATEWAY, Caller.SCHEDULER, Caller.ADMIN))
 
 	config_main = uvicorn.Config(api, host="0.0.0.0", port=5000, log_level=LOG_LEVEL.lower(),log_config=None)
 	config_metrics = uvicorn.Config(metrics_api, host="0.0.0.0", port=9000, log_level=LOG_LEVEL.lower(),log_config=None)

src/models.py

@@ -0,0 +1,27 @@
+from pydantic import BaseModel, Field, computed_field
+
+
+class AnimeCreate(BaseModel):
+	anilist_id: int = Field(gt=0)
+	custom_name: str | None = Field(default=None, max_length=255)
+
+class AnimeRemove(BaseModel):
+	anilist_id: int
+
+class AnimeEntry(BaseModel):
+	name: str
+	anilist_id: int
+	last_updated: str | None = None
+
+class Counts(BaseModel):
+	active: int
+	inactive: int
+
+class AnimeList(BaseModel):
+	active: list[AnimeEntry] = Field(default_factory=list)
+	inactive: list[AnimeEntry] = Field(default_factory=list)
+
+	@computed_field
+	@property
+	def counts(self) -> Counts:
+		return Counts(active=len(self.active),inactive=len(self.inactive))