feat(games): add steam pages with steam price/reduc

polylan_submitter/games/services/steam_store.py

@@ -0,0 +1,79 @@
+import logging
+
+import httpx
+from django.conf import settings
+from django.utils import timezone
+
+from ..models import Game
+
+logger = logging.getLogger(__name__)
+
+# Public store endpoint, no API key needed. Rate limited to ~200 calls / 5 min,
+# which is plenty for a handful of games every few hours.
+APP_DETAILS_URL = "https://store.steampowered.com/api/appdetails"
+
+
+class SteamStoreError(Exception):
+    """Raised when the Steam store didn't return usable details for an app."""
+
+
+def fetch_app_details(steam_app_id: int) -> dict:
+    response = httpx.get(
+        APP_DETAILS_URL,
+        params={
+            "appids": steam_app_id,
+            "cc": settings.STEAM_STORE_COUNTRY,
+            "l": "en",
+            "filters": "basic,price_overview",
+        },
+        timeout=10,
+    )
+    response.raise_for_status()
+
+    entry = (response.json() or {}).get(str(steam_app_id)) or {}
+    if not entry.get("success"):
+        raise SteamStoreError(f"No store details for app {steam_app_id}")
+
+    return entry["data"]
+
+
+def refresh_steam_game(game: Game) -> None:
+    """Pull the current store info for a Steam game into its steam_* fields."""
+    data = fetch_app_details(game.steam_app_id)
+    price = data.get("price_overview") or {}
+
+    game.steam_is_free = bool(data.get("is_free"))
+    game.steam_price_initial = price.get("initial")
+    game.steam_price_final = price.get("final")
+    game.steam_discount_percent = price.get("discount_percent") or 0
+    game.steam_currency = price.get("currency") or ""
+    game.steam_short_description = data.get("short_description") or ""
+    game.steam_header_image = data.get("header_image") or ""
+    game.steam_info_updated_at = timezone.now()
+    game.save(
+        update_fields=[
+            "steam_is_free",
+            "steam_price_initial",
+            "steam_price_final",
+            "steam_discount_percent",
+            "steam_currency",
+            "steam_short_description",
+            "steam_header_image",
+            "steam_info_updated_at",
+            "updated_at",
+        ]
+    )
+
+
+def refresh_steam_games(game_ids: list[int] | None = None) -> None:
+    """Refresh every Steam game (or just game_ids). A failing game keeps its
+    previous info and doesn't stop the others."""
+    games = Game.objects.filter(steam_app_id__isnull=False)
+    if game_ids is not None:
+        games = games.filter(id__in=game_ids)
+
+    for game in games:
+        try:
+            refresh_steam_game(game)
+        except (httpx.HTTPError, ValueError, SteamStoreError) as exc:
+            logger.warning("Steam store refresh failed for %s: %s", game, exc)