feat: EbayCategoryCache get_relevant and get_all_for_prompt

app/platforms/ebay/categories.py

@@ -76,3 +76,41 @@ class EbayCategoryCache:
         )
         self._conn.commit()
         log.info("EbayCategoryCache: seeded %d bootstrap categories.", len(_BOOTSTRAP_CATEGORIES))
+
+    def get_relevant(
+        self,
+        keywords: list[str],
+        limit: int = 30,
+    ) -> list[tuple[str, str]]:
+        """Return (category_id, full_path) pairs matching any keyword.
+
+        Matches against both name and full_path (case-insensitive LIKE).
+        Returns at most `limit` rows.
+        """
+        if not keywords:
+            return []
+        conditions = " OR ".join(
+            "LOWER(name) LIKE ? OR LOWER(full_path) LIKE ?" for _ in keywords
+        )
+        params: list[str] = []
+        for kw in keywords:
+            like = f"%{kw.lower()}%"
+            params.extend([like, like])
+        params.append(limit)
+        cur = self._conn.execute(
+            f"SELECT category_id, full_path FROM ebay_categories"
+            f" WHERE {conditions} ORDER BY name LIMIT ?",
+            params,
+        )
+        return [(row[0], row[1]) for row in cur.fetchall()]
+
+    def get_all_for_prompt(self, limit: int = 80) -> list[tuple[str, str]]:
+        """Return up to `limit` (category_id, full_path) pairs, sorted by name.
+
+        Used when no keyword context is available.
+        """
+        cur = self._conn.execute(
+            "SELECT category_id, full_path FROM ebay_categories ORDER BY name LIMIT ?",
+            (limit,),
+        )
+        return [(row[0], row[1]) for row in cur.fetchall()]

tests/test_ebay_categories.py

@@ -56,3 +56,34 @@ def test_seed_bootstrap_populates_rows(db):
     cur = db.execute("SELECT COUNT(*) FROM ebay_categories")
     count = cur.fetchone()[0]
     assert count >= BOOTSTRAP_MIN
+
+
+def test_get_relevant_keyword_match(db):
+    cache = EbayCategoryCache(db)
+    cache._seed_bootstrap()
+    results = cache.get_relevant(["GPU", "graphics"], limit=5)
+    ids = [r[0] for r in results]
+    assert "27386" in ids  # Graphics Cards
+
+
+def test_get_relevant_no_match(db):
+    cache = EbayCategoryCache(db)
+    cache._seed_bootstrap()
+    results = cache.get_relevant(["zzznomatch_xyzxyz"], limit=5)
+    assert results == []
+
+
+def test_get_relevant_respects_limit(db):
+    cache = EbayCategoryCache(db)
+    cache._seed_bootstrap()
+    results = cache.get_relevant(["electronics"], limit=3)
+    assert len(results) <= 3
+
+
+def test_get_all_for_prompt_returns_rows(db):
+    cache = EbayCategoryCache(db)
+    cache._seed_bootstrap()
+    results = cache.get_all_for_prompt(limit=10)
+    assert len(results) > 0
+    # Each entry is (category_id, full_path)
+    assert all(len(r) == 2 for r in results)