desktop修正

backend/app/modules/trial_balance/service.py

@@ -0,0 +1,81 @@
+# backend/app/modules/trial_balance/service.py
+from decimal import Decimal
+from typing import Dict, Any, List
+from app.core.database import get_connection
+
+def D(x) -> Decimal:
+    return Decimal(str(x or 0))
+
+def fetch_trial_balance(date_from: str, date_to: str):
+
+    with get_connection() as conn, conn.cursor() as cur:
+
+        cur.execute("""
+            SELECT account_id, account_code, account_name, account_type
+              FROM accounts
+             WHERE is_active = true
+             ORDER BY account_code
+        """)
+        accounts = cur.fetchall()
+
+        result_accounts: List[Dict[str, Any]] = []
+
+        total_opening = Decimal("0")
+        total_debit = Decimal("0")
+        total_credit = Decimal("0")
+        total_closing = Decimal("0")
+
+        for acc in accounts:
+            aid = acc["account_id"]
+
+            # 期首
+            cur.execute("""
+                SELECT COALESCE(SUM(l.debit - l.credit), 0) AS opening
+                  FROM journal_lines l
+                  JOIN journal_entries j ON j.journal_id = l.journal_id
+                 WHERE l.account_id = %s
+                   AND j.journal_date < %s
+            """, (aid, date_from))
+            opening = D(cur.fetchone()["opening"])
+
+            # 当期
+            cur.execute("""
+                SELECT
+                    COALESCE(SUM(l.debit), 0) AS debit,
+                    COALESCE(SUM(l.credit), 0) AS credit
+                  FROM journal_lines l
+                  JOIN journal_entries j ON j.journal_id = l.journal_id
+                 WHERE l.account_id = %s
+                   AND j.journal_date BETWEEN %s AND %s
+            """, (aid, date_from, date_to))
+            row = cur.fetchone()
+            debit = D(row["debit"])
+            credit = D(row["credit"])
+
+            closing = opening + debit - credit
+
+            total_opening += opening
+            total_debit += debit
+            total_credit += credit
+            total_closing += closing
+
+            result_accounts.append({
+                "account_id": aid,
+                "account_code": acc["account_code"],
+                "account_name": acc["account_name"],
+                "account_type": acc["account_type"],
+                "opening_balance": str(opening),
+                "debit": str(debit),
+                "credit": str(credit),
+                "closing_balance": str(closing),
+            })
+
+    return {
+        "totals": {
+            "opening_balance": str(total_opening),
+            "debit": str(total_debit),
+            "credit": str(total_credit),
+            "closing_balance": str(total_closing)
+        },
+        "accounts": result_accounts
+    }