desktop修正

backend/app/modules/general_ledger/router.py

@@ -0,0 +1,28 @@
+from fastapi import APIRouter, HTTPException, Query
+from app.modules.general_ledger.service import fetch_general_ledger
+
+router = APIRouter(
+    prefix="/general-ledger",
+    tags=["元帳"]
+)
+
+@router.get("", summary="元帳取得（科目別）")
+def get_general_ledger(
+    account_id: int = Query(...),
+    date_from: str = Query(...),
+    date_to: str = Query(...)
+):
+    if date_from > date_to:
+        raise HTTPException(status_code=400, detail="期間指定が不正です。")
+
+    result = fetch_general_ledger(account_id, date_from, date_to)
+    if result is None:
+        raise HTTPException(status_code=400, detail="科目が存在しません。")
+
+    return {
+        "period": {
+            "from": date_from,
+            "to": date_to
+        },
+        **result
+    }

backend/app/modules/general_ledger/service.py

@@ -0,0 +1,53 @@
+from decimal import Decimal
+from app.core.database import get_connection
+from app.modules.general_ledger.sql import GENERAL_LEDGER_SQL
+
+def D(x) -> Decimal:
+    return Decimal(str(x or 0))
+
+def fetch_general_ledger(account_id: int, date_from: str, date_to: str):
+
+    with get_connection() as conn, conn.cursor() as cur:
+
+        # ① 科目确认
+        cur.execute("""
+            SELECT account_code, account_name
+              FROM accounts
+             WHERE account_id = %s
+               AND is_active = true
+        """, (account_id,))
+        acc = cur.fetchone()
+        if not acc:
+            return None
+
+        # ② 元帳明细
+        cur.execute(
+            GENERAL_LEDGER_SQL,
+            {
+                "account_id": account_id,
+                "date_from": date_from,
+                "date_to": date_to
+            }
+        )
+        rows = cur.fetchall()
+
+        balance = Decimal("0")
+        lines = []
+
+        for r in rows:
+            balance += D(r["debit"]) - D(r["credit"])
+            lines.append({
+                "journal_date": r["journal_date"],
+                "description": r["description"],
+                "debit": str(D(r["debit"])),
+                "credit": str(D(r["credit"])),
+                "balance": str(balance)
+            })
+
+    return {
+        "account": {
+            "account_code": acc["account_code"],
+            "account_name": acc["account_name"]
+        },
+        "lines": lines
+    }

backend/app/modules/general_ledger/sql.py

@@ -0,0 +1,14 @@
+# sql.py
+GENERAL_LEDGER_SQL = """
+SELECT
+    j.journal_date,
+    j.description,
+    l.debit,
+    l.credit
+FROM journal_lines l
+JOIN journal_entries j
+  ON j.journal_id = l.journal_id
+WHERE l.account_id = %(account_id)s
+  AND j.journal_date BETWEEN %(date_from)s AND %(date_to)s
+ORDER BY j.journal_date, l.line_id;
+"""