first commit

app/filters.py

@@ -0,0 +1,32 @@
+from __future__ import annotations
+
+from app.models import Offer
+
+
+def get_offer_skip_reason(
+    offer: Offer,
+    include_keywords: list[str],
+    exclude_keywords: list[str],
+    min_price_amount: int | None,
+) -> str | None:
+    haystack = f"{offer.title}\n{offer.description}".lower()
+
+    if exclude_keywords and any(keyword in haystack for keyword in exclude_keywords):
+        return "exclude_keyword"
+
+    if min_price_amount is not None and (offer.price_amount is None or offer.price_amount < min_price_amount):
+        return "min_price_amount"
+
+    if include_keywords and not any(keyword in haystack for keyword in include_keywords):
+        return "include_keyword"
+
+    return None
+
+
+def is_relevant_offer(
+    offer: Offer,
+    include_keywords: list[str],
+    exclude_keywords: list[str],
+    min_price_amount: int | None,
+) -> bool:
+    return get_offer_skip_reason(offer, include_keywords, exclude_keywords, min_price_amount) is None