feat(insta-lab): keyword_extractor.extract_with_weights for category proportions

insta-lab/app/keyword_extractor.py

@@ -81,3 +81,22 @@ def extract_for_category(category: str, limit: int = KEYWORDS_PER_CATEGORY) -> L
         })
         saved.append({"id": kid, **kw, "category": category})
     return saved
+
+
+def extract_with_weights(weights: Dict[str, float], total_limit: int) -> List[Dict[str, Any]]:
+    """카테고리 가중치 비율대로 키워드를 분배 추출."""
+    from .config import DEFAULT_CATEGORY_SEEDS
+    if not weights or sum(weights.values()) == 0:
+        cats = list(DEFAULT_CATEGORY_SEEDS.keys())
+        weights = {c: 1.0 for c in cats}
+
+    total_weight = sum(weights.values())
+    out: List[Dict[str, Any]] = []
+    for category, w in weights.items():
+        if w <= 0:
+            continue
+        per_cat = round(total_limit * w / total_weight)
+        if per_cat <= 0:
+            continue
+        out.extend(extract_for_category(category, limit=per_cat))
+    return out

insta-lab/tests/test_extract_with_weights.py

@@ -0,0 +1,71 @@
+import os
+import gc
+import tempfile
+from unittest.mock import patch
+
+import pytest
+
+from app import db as db_module
+from app import keyword_extractor
+
+
+@pytest.fixture
+def tmp_db(monkeypatch):
+    fd, path = tempfile.mkstemp(suffix=".db")
+    os.close(fd)
+    monkeypatch.setattr(db_module, "DB_PATH", path)
+    db_module.init_db()
+    yield path
+    gc.collect()
+    for ext in ("", "-wal", "-shm"):
+        try:
+            os.remove(path + ext)
+        except OSError:
+            pass
+
+
+def test_extract_with_weights_proportional(tmp_db, monkeypatch):
+    calls = []
+
+    def fake_extract(category, limit):
+        calls.append((category, limit))
+        return [{"id": i, "keyword": f"{category}{i}", "category": category, "score": 0.5}
+                for i in range(limit)]
+
+    monkeypatch.setattr(keyword_extractor, "extract_for_category", fake_extract)
+    out = keyword_extractor.extract_with_weights(
+        {"economy": 0.6, "psychology": 0.3, "celebrity": 0.1}, total_limit=10,
+    )
+    by_cat = {c: l for c, l in calls}
+    assert by_cat == {"economy": 6, "psychology": 3, "celebrity": 1}
+    assert len(out) == 10
+
+
+def test_extract_with_weights_skips_zero(tmp_db, monkeypatch):
+    calls = []
+
+    def fake_extract(category, limit):
+        calls.append((category, limit))
+        return []
+
+    monkeypatch.setattr(keyword_extractor, "extract_for_category", fake_extract)
+    keyword_extractor.extract_with_weights(
+        {"economy": 1.0, "celebrity": 0.0}, total_limit=10,
+    )
+    cats_called = [c for c, _ in calls]
+    assert "celebrity" not in cats_called
+    assert "economy" in cats_called
+
+
+def test_extract_with_weights_fallback_to_equal(tmp_db, monkeypatch):
+    calls = []
+
+    def fake_extract(category, limit):
+        calls.append((category, limit))
+        return []
+
+    monkeypatch.setattr(keyword_extractor, "extract_for_category", fake_extract)
+    keyword_extractor.extract_with_weights({}, total_limit=9)
+    by_cat = {c: l for c, l in calls}
+    assert set(by_cat.keys()) == {"economy", "psychology", "celebrity"}
+    assert all(l == 3 for l in by_cat.values())