UI 개선 — 모바일 사진 업로드 카메라/갤러리 버튼 분리, 에러코드 차트 단순화

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/main.py

@@ -543,77 +543,22 @@ def stats_top_chargers(limit: int = 10):
 
 
 @app.get("/api/stats/charger-error-codes")
-def stats_charger_error_codes(code_limit: int = 10, charger_limit: int = 5):
-    """에러코드별 누적 건수 Top N (어느 충전기에서 발생했는지 함께 반환)."""
+def stats_charger_error_codes(code_limit: int = 10):
+    """에러코드별 누적 건수 Top N (단순 순위)."""
     from database import SessionLocal
     from sqlalchemy import text
-    from collections import defaultdict
     db = SessionLocal()
     try:
         rows = db.execute(text("""
-            SELECT TRIM(rep.error_code)                        AS error_code,
-                   rep.charger_id,
-                   COALESCE(c.station_name, rep.charger_id)   AS station_name,
-                   COALESCE(c.name, '')                        AS charger_name,
-                   COUNT(*)                                    AS cnt
-            FROM reports rep
-            LEFT JOIN chargers c ON c.id = rep.charger_id
-            WHERE rep.error_code IS NOT NULL
-              AND TRIM(rep.error_code) != ''
-            GROUP BY TRIM(rep.error_code), rep.charger_id, c.station_name, c.name
-        """)).fetchall()
-
-        if not rows:
-            return {"error_codes": [], "charger_labels": {}}
-
-        # error_code → {total, chargers: {cid: cnt}}
-        code_info    = {}
-        # charger_id → label, total across all codes
-        charger_info = {}
-
-        for ecode, cid, sname, cname, cnt in rows:
-            cnt = int(cnt)
-            if ecode not in code_info:
-                code_info[ecode] = {"total": 0, "chargers": {}}
-            code_info[ecode]["total"]          += cnt
-            code_info[ecode]["chargers"][cid]   = cnt
-
-            if cid not in charger_info:
-                label = sname + (f" ({cname})" if cname else "")
-                if len(label) > 20: label = label[:18] + "…"
-                charger_info[cid] = {"label": label, "total": 0}
-            charger_info[cid]["total"] += cnt
-
-        # Top N error codes by total
-        top_codes = sorted(code_info.items(), key=lambda x: -x[1]["total"])[:code_limit]
-
-        # Top M chargers across all top codes
-        top_cids = [cid for cid, _ in
-                    sorted(charger_info.items(), key=lambda x: -x[1]["total"])[:charger_limit]]
-
-        result = []
-        for ecode, info in reversed(top_codes):   # 역순: 차트에서 1위가 위에
-            entry = {"error_code": ecode, "total": info["total"]}
-            other = 0
-            for cid, cnt in info["chargers"].items():
-                if cid in top_cids:
-                    entry[cid] = cnt
-                else:
-                    other += cnt
-            if other:
-                entry["__other__"] = other
-            result.append(entry)
-
-        has_other = any(r.get("__other__", 0) > 0 for r in result)
-        charger_labels = {cid: charger_info[cid]["label"] for cid in top_cids}
-        if has_other:
-            charger_labels["__other__"] = "기타"
-
-        dataset_keys = top_cids + (["__other__"] if has_other else [])
-        return {
-            "error_codes":    result,          # 에러코드별 집계 (역순)
-            "charger_labels": charger_labels,  # charger_id → 표시명
-            "dataset_keys":   dataset_keys,    # 차트 dataset 순서
-        }
+            SELECT TRIM(error_code) AS error_code, COUNT(*) AS cnt
+            FROM reports
+            WHERE error_code IS NOT NULL AND TRIM(error_code) != ''
+            GROUP BY TRIM(error_code)
+            ORDER BY cnt DESC
+            LIMIT :limit
+        """), {"limit": code_limit}).fetchall()
+        # 역순: 차트 Y축에서 1위가 맨 위
+        result = [{"error_code": r[0], "total": int(r[1])} for r in reversed(rows)]
+        return {"error_codes": result}
     finally:
         db.close()