delphi-database/app/api/financial.py

"""
Financial/Ledger API endpoints
"""
from typing import List, Optional, Dict, Any
from fastapi import APIRouter, Depends, HTTPException, status, Query
from sqlalchemy.orm import Session, joinedload
from sqlalchemy import or_, func, and_, desc, asc, text
from datetime import date, datetime, timedelta

from app.database.base import get_db
from app.models.ledger import Ledger
from app.models.files import File
from app.models.rolodex import Rolodex
from app.models.lookups import Employee, TransactionType, TransactionCode
from app.models.user import User
from app.auth.security import get_current_user

router = APIRouter()


# Pydantic schemas
from pydantic import BaseModel


class LedgerBase(BaseModel):
    file_no: str
    date: date
    t_code: str
    t_type: str
    t_type_l: Optional[str] = None
    empl_num: str
    quantity: float = 0.0
    rate: float = 0.0
    amount: float
    billed: str = "N"
    note: Optional[str] = None


class LedgerCreate(LedgerBase):
    pass


class LedgerUpdate(BaseModel):
    date: Optional[date] = None
    t_code: Optional[str] = None
    t_type: Optional[str] = None
    t_type_l: Optional[str] = None
    empl_num: Optional[str] = None
    quantity: Optional[float] = None
    rate: Optional[float] = None
    amount: Optional[float] = None
    billed: Optional[str] = None
    note: Optional[str] = None


class LedgerResponse(LedgerBase):
    id: int
    item_no: int
    
    class Config:
        from_attributes = True


class FinancialSummary(BaseModel):
    """Financial summary for a file"""
    file_no: str
    total_hours: float
    total_hourly_fees: float
    total_flat_fees: float
    total_disbursements: float
    total_credits: float
    total_charges: float
    amount_owing: float
    unbilled_amount: float
    billed_amount: float


@router.get("/ledger/{file_no}", response_model=List[LedgerResponse])
async def get_file_ledger(
    file_no: str,
    skip: int = Query(0, ge=0),
    limit: int = Query(100, ge=1, le=500),
    billed_only: Optional[bool] = Query(None),
    db: Session = Depends(get_db),
    current_user: User = Depends(get_current_user)
):
    """Get ledger entries for specific file"""
    query = db.query(Ledger).filter(Ledger.file_no == file_no).order_by(Ledger.date.desc())
    
    if billed_only is not None:
        billed_filter = "Y" if billed_only else "N"
        query = query.filter(Ledger.billed == billed_filter)
    
    entries = query.offset(skip).limit(limit).all()
    return entries


@router.post("/ledger/", response_model=LedgerResponse)
async def create_ledger_entry(
    entry_data: LedgerCreate,
    db: Session = Depends(get_db),
    current_user: User = Depends(get_current_user)
):
    """Create new ledger entry"""
    # Verify file exists
    file_obj = db.query(File).filter(File.file_no == entry_data.file_no).first()
    if not file_obj:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail="File not found"
        )
    
    # Get next item number for this file
    max_item = db.query(func.max(Ledger.item_no)).filter(
        Ledger.file_no == entry_data.file_no
    ).scalar() or 0
    
    entry = Ledger(
        **entry_data.model_dump(),
        item_no=max_item + 1
    )
    
    db.add(entry)
    db.commit()
    db.refresh(entry)
    
    # Update file balances (simplified version)
    await _update_file_balances(file_obj, db)
    
    return entry


@router.put("/ledger/{entry_id}", response_model=LedgerResponse)
async def update_ledger_entry(
    entry_id: int,
    entry_data: LedgerUpdate,
    db: Session = Depends(get_db),
    current_user: User = Depends(get_current_user)
):
    """Update ledger entry"""
    entry = db.query(Ledger).filter(Ledger.id == entry_id).first()
    
    if not entry:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail="Ledger entry not found"
        )
    
    # Update fields
    for field, value in entry_data.model_dump(exclude_unset=True).items():
        setattr(entry, field, value)
    
    db.commit()
    db.refresh(entry)
    
    # Update file balances
    file_obj = db.query(File).filter(File.file_no == entry.file_no).first()
    if file_obj:
        await _update_file_balances(file_obj, db)
    
    return entry


@router.delete("/ledger/{entry_id}")
async def delete_ledger_entry(
    entry_id: int,
    db: Session = Depends(get_db),
    current_user: User = Depends(get_current_user)
):
    """Delete ledger entry"""
    entry = db.query(Ledger).filter(Ledger.id == entry_id).first()
    
    if not entry:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail="Ledger entry not found"
        )
    
    file_no = entry.file_no
    db.delete(entry)
    db.commit()
    
    # Update file balances
    file_obj = db.query(File).filter(File.file_no == file_no).first()
    if file_obj:
        await _update_file_balances(file_obj, db)
    
    return {"message": "Ledger entry deleted successfully"}


@router.get("/reports/{file_no}", response_model=FinancialSummary)
async def get_financial_report(
    file_no: str,
    db: Session = Depends(get_db),
    current_user: User = Depends(get_current_user)
):
    """Get financial summary report for file"""
    file_obj = db.query(File).filter(File.file_no == file_no).first()
    
    if not file_obj:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail="File not found"
        )
    
    # Calculate totals from ledger entries
    ledger_entries = db.query(Ledger).filter(Ledger.file_no == file_no).all()
    
    total_hours = 0.0
    total_hourly_fees = 0.0
    total_flat_fees = 0.0
    total_disbursements = 0.0
    total_credits = 0.0
    unbilled_amount = 0.0
    billed_amount = 0.0
    
    for entry in ledger_entries:
        if entry.t_type == "2":  # Hourly fees
            total_hours += entry.quantity
            total_hourly_fees += entry.amount
        elif entry.t_type == "3":  # Flat fees
            total_flat_fees += entry.amount
        elif entry.t_type == "4":  # Disbursements
            total_disbursements += entry.amount
        elif entry.t_type == "5":  # Credits
            total_credits += entry.amount
        
        if entry.billed == "Y":
            billed_amount += entry.amount
        else:
            unbilled_amount += entry.amount
    
    total_charges = total_hourly_fees + total_flat_fees + total_disbursements
    amount_owing = total_charges - total_credits
    
    return FinancialSummary(
        file_no=file_no,
        total_hours=total_hours,
        total_hourly_fees=total_hourly_fees,
        total_flat_fees=total_flat_fees,
        total_disbursements=total_disbursements,
        total_credits=total_credits,
        total_charges=total_charges,
        amount_owing=amount_owing,
        unbilled_amount=unbilled_amount,
        billed_amount=billed_amount
    )


async def _update_file_balances(file_obj: File, db: Session):
    """Update file balance totals (simplified version of Tally_Ledger)"""
    ledger_entries = db.query(Ledger).filter(Ledger.file_no == file_obj.file_no).all()
    
    # Reset balances
    file_obj.trust_bal = 0.0
    file_obj.hours = 0.0
    file_obj.hourly_fees = 0.0
    file_obj.flat_fees = 0.0
    file_obj.disbursements = 0.0
    file_obj.credit_bal = 0.0
    
    # Calculate totals
    for entry in ledger_entries:
        if entry.t_type == "1":  # Trust
            file_obj.trust_bal += entry.amount
        elif entry.t_type == "2":  # Hourly fees
            file_obj.hours += entry.quantity
            file_obj.hourly_fees += entry.amount
        elif entry.t_type == "3":  # Flat fees
            file_obj.flat_fees += entry.amount
        elif entry.t_type == "4":  # Disbursements
            file_obj.disbursements += entry.amount
        elif entry.t_type == "5":  # Credits
            file_obj.credit_bal += entry.amount
    
    file_obj.total_charges = file_obj.hourly_fees + file_obj.flat_fees + file_obj.disbursements
    file_obj.amount_owing = file_obj.total_charges - file_obj.credit_bal
    
    # Calculate transferable amount
    if file_obj.amount_owing > 0 and file_obj.trust_bal > 0:
        if file_obj.trust_bal >= file_obj.amount_owing:
            file_obj.transferable = file_obj.amount_owing
        else:
            file_obj.transferable = file_obj.trust_bal
    else:
        file_obj.transferable = 0.0
    
    db.commit()


# Additional Financial Management Endpoints

@router.get("/time-entries/recent")
async def get_recent_time_entries(
    days: int = Query(7, ge=1, le=30),
    employee: Optional[str] = Query(None),
    status: Optional[str] = Query(None, description="billed|unbilled"),
    q: Optional[str] = Query(None, description="text search across description, file, employee, matter, client name"),
    page: int = Query(1, ge=1),
    limit: int = Query(50, ge=1, le=200),
    sort_by: str = Query("date"),
    sort_dir: str = Query("desc"),
    db: Session = Depends(get_db),
    current_user: User = Depends(get_current_user)
):
    """Get recent time entries across all files with server-side sorting and pagination"""
    cutoff_date = date.today() - timedelta(days=days)

    # Base query with joins for sorting/searching by client/matter
    base_query = db.query(Ledger) \
        .join(File, Ledger.file_no == File.file_no) \
        .outerjoin(Rolodex, File.id == Rolodex.id) \
        .options(joinedload(Ledger.file).joinedload(File.owner)) \
        .filter(and_(
            Ledger.date >= cutoff_date,
            Ledger.t_type == "2"
        ))

    if employee:
        base_query = base_query.filter(Ledger.empl_num == employee)

    # Status/billed filtering
    if status:
        status_l = str(status).strip().lower()
        if status_l in ("billed", "unbilled"):
            billed_value = "Y" if status_l == "billed" else "N"
            base_query = base_query.filter(Ledger.billed == billed_value)

    # Text search across multiple fields
    if q:
        query_text = f"%{q.strip()}%"
        base_query = base_query.filter(
            or_(
                Ledger.note.ilike(query_text),
                Ledger.file_no.ilike(query_text),
                Ledger.empl_num.ilike(query_text),
                File.regarding.ilike(query_text),
                Rolodex.first.ilike(query_text),
                Rolodex.last.ilike(query_text)
            )
        )

    # Sorting mapping (supported columns)
    sort_map = {
        "date": Ledger.date,
        "file_no": Ledger.file_no,
        "client_name": Rolodex.last,  # best-effort: sort by client last name
        "empl_num": Ledger.empl_num,
        "quantity": Ledger.quantity,
        "hours": Ledger.quantity,  # alias
        "rate": Ledger.rate,
        "amount": Ledger.amount,
        "billed": Ledger.billed,
        "description": Ledger.note,
    }
    sort_column = sort_map.get(sort_by.lower(), Ledger.date)
    direction = desc if str(sort_dir).lower() == "desc" else asc

    # Total count for pagination (distinct on Ledger.id to avoid join-induced dupes)
    total_count = base_query.with_entities(func.count(func.distinct(Ledger.id))).scalar()

    # Apply sorting and pagination
    offset = (page - 1) * limit
    page_query = base_query.order_by(direction(sort_column)).offset(offset).limit(limit)
    entries = page_query.all()

    # Format results with file and client information
    results = []
    for entry in entries:
        file_obj = entry.file
        client = file_obj.owner if file_obj else None

        results.append({
            "id": entry.id,
            "date": entry.date.isoformat(),
            "file_no": entry.file_no,
            "client_name": f"{client.first or ''} {client.last}".strip() if client else "Unknown",
            "matter": file_obj.regarding if file_obj else "",
            "employee": entry.empl_num,
            "hours": entry.quantity,
            "rate": entry.rate,
            "amount": entry.amount,
            "description": entry.note,
            "billed": entry.billed == "Y"
        })

    return {
        "entries": results,
        "total_count": total_count,
        "page": page,
        "limit": limit,
        "sort_by": sort_by,
        "sort_dir": sort_dir,
    }


@router.post("/time-entry/quick")
async def create_quick_time_entry(
    file_no: str,
    hours: float,
    description: str,
    entry_date: Optional[date] = None,
    employee: Optional[str] = None,
    db: Session = Depends(get_db),
    current_user: User = Depends(get_current_user)
):
    """Quick time entry creation"""
    # Verify file exists and get default rate
    file_obj = db.query(File).filter(File.file_no == file_no).first()
    if not file_obj:
        raise HTTPException(status_code=404, detail="File not found")
    
    # Use file's default rate and employee if not provided
    rate = file_obj.rate_per_hour
    empl_num = employee or file_obj.empl_num
    entry_date = entry_date or date.today()
    
    # Get next item number
    max_item = db.query(func.max(Ledger.item_no)).filter(
        Ledger.file_no == file_no
    ).scalar() or 0
    
    # Create time entry
    entry = Ledger(
        file_no=file_no,
        item_no=max_item + 1,
        date=entry_date,
        t_code="TIME",
        t_type="2",
        t_type_l="D",
        empl_num=empl_num,
        quantity=hours,
        rate=rate,
        amount=hours * rate,
        billed="N",
        note=description
    )
    
    db.add(entry)
    db.commit()
    db.refresh(entry)
    
    # Update file balances
    await _update_file_balances(file_obj, db)
    
    return {
        "id": entry.id,
        "message": f"Time entry created: {hours} hours @ ${rate}/hr = ${entry.amount}",
        "entry": {
            "date": entry.date.isoformat(),
            "hours": hours,
            "rate": rate,
            "amount": entry.amount,
            "description": description
        }
    }


@router.get("/unbilled-entries")
async def get_unbilled_entries(
    file_no: Optional[str] = Query(None),
    employee: Optional[str] = Query(None),
    start_date: Optional[date] = Query(None),
    end_date: Optional[date] = Query(None),
    db: Session = Depends(get_db),
    current_user: User = Depends(get_current_user)
):
    """Get all unbilled entries for billing preparation"""
    query = db.query(Ledger)\
        .options(joinedload(Ledger.file).joinedload(File.owner))\
        .filter(Ledger.billed == "N")\
        .order_by(Ledger.file_no, Ledger.date)
    
    if file_no:
        query = query.filter(Ledger.file_no == file_no)
    
    if employee:
        query = query.filter(Ledger.empl_num == employee)
    
    if start_date:
        query = query.filter(Ledger.date >= start_date)
    
    if end_date:
        query = query.filter(Ledger.date <= end_date)
    
    entries = query.all()
    
    # Group by file for easier billing
    files_data = {}
    total_unbilled = 0.0
    
    for entry in entries:
        file_no = entry.file_no
        if file_no not in files_data:
            file_obj = entry.file
            client = file_obj.owner if file_obj else None
            files_data[file_no] = {
                "file_no": file_no,
                "client_name": f"{client.first or ''} {client.last}".strip() if client else "Unknown",
                "client_id": file_obj.id if file_obj else "",
                "matter": file_obj.regarding if file_obj else "",
                "entries": [],
                "total_amount": 0.0,
                "total_hours": 0.0
            }
        
        entry_data = {
            "id": entry.id,
            "date": entry.date.isoformat(),
            "type": entry.t_code,
            "employee": entry.empl_num,
            "description": entry.note,
            "quantity": entry.quantity,
            "rate": entry.rate,
            "amount": entry.amount
        }
        
        files_data[file_no]["entries"].append(entry_data)
        files_data[file_no]["total_amount"] += entry.amount
        if entry.t_type == "2":  # Time entries
            files_data[file_no]["total_hours"] += entry.quantity
        
        total_unbilled += entry.amount
    
    return {
        "files": list(files_data.values()),
        "total_unbilled_amount": total_unbilled,
        "total_files": len(files_data)
    }


@router.post("/bill-entries")
async def mark_entries_as_billed(
    entry_ids: List[int],
    bill_date: Optional[date] = None,
    db: Session = Depends(get_db),
    current_user: User = Depends(get_current_user)
):
    """Mark multiple entries as billed"""
    bill_date = bill_date or date.today()
    
    # Get entries to bill
    entries = db.query(Ledger).filter(Ledger.id.in_(entry_ids)).all()
    
    if not entries:
        raise HTTPException(status_code=404, detail="No entries found")
    
    # Update entries to billed status
    billed_amount = 0.0
    affected_files = set()
    
    for entry in entries:
        entry.billed = "Y"
        billed_amount += entry.amount
        affected_files.add(entry.file_no)
    
    db.commit()
    
    # Update file balances for affected files
    for file_no in affected_files:
        file_obj = db.query(File).filter(File.file_no == file_no).first()
        if file_obj:
            await _update_file_balances(file_obj, db)
    
    return {
        "message": f"Marked {len(entries)} entries as billed",
        "billed_amount": billed_amount,
        "bill_date": bill_date.isoformat(),
        "affected_files": list(affected_files)
    }


@router.get("/financial-dashboard")
async def get_financial_dashboard(
    db: Session = Depends(get_db),
    current_user: User = Depends(get_current_user)
):
    """Get financial dashboard summary"""
    # Total financial metrics
    total_charges = db.query(func.sum(File.total_charges)).scalar() or 0
    total_owing = db.query(func.sum(File.amount_owing)).scalar() or 0
    total_trust = db.query(func.sum(File.trust_bal)).scalar() or 0
    total_hours = db.query(func.sum(File.hours)).scalar() or 0
    
    # Unbilled amounts
    unbilled_total = db.query(func.sum(Ledger.amount))\
        .filter(Ledger.billed == "N").scalar() or 0
    
    # Recent activity (last 30 days)
    thirty_days_ago = date.today() - timedelta(days=30)
    recent_entries = db.query(func.count(Ledger.id))\
        .filter(Ledger.date >= thirty_days_ago).scalar() or 0
    
    recent_amount = db.query(func.sum(Ledger.amount))\
        .filter(Ledger.date >= thirty_days_ago).scalar() or 0
    
    # Top files by balance
    top_files = db.query(File.file_no, File.amount_owing, File.total_charges)\
        .filter(File.amount_owing > 0)\
        .order_by(desc(File.amount_owing))\
        .limit(10).all()
    
    # Employee activity
    employee_stats = db.query(
        Ledger.empl_num,
        func.sum(Ledger.quantity).label('total_hours'),
        func.sum(Ledger.amount).label('total_amount'),
        func.count(Ledger.id).label('entry_count')
    ).filter(
        and_(
            Ledger.date >= thirty_days_ago,
            Ledger.t_type == "2"  # Time entries only
        )
    ).group_by(Ledger.empl_num).all()
    
    return {
        "summary": {
            "total_charges": float(total_charges),
            "total_owing": float(total_owing),
            "total_trust": float(total_trust),
            "total_hours": float(total_hours),
            "unbilled_amount": float(unbilled_total)
        },
        "recent_activity": {
            "entries_count": recent_entries,
            "total_amount": float(recent_amount),
            "period_days": 30
        },
        "top_files": [
            {
                "file_no": f[0],
                "amount_owing": float(f[1]),
                "total_charges": float(f[2])
            } for f in top_files
        ],
        "employee_stats": [
            {
                "employee": stat[0],
                "hours": float(stat[1] or 0),
                "amount": float(stat[2] or 0),
                "entries": stat[3]
            } for stat in employee_stats
        ]
    }


@router.get("/lookups/transaction-codes")
async def get_transaction_codes(
    db: Session = Depends(get_db),
    current_user: User = Depends(get_current_user)
):
    """Get available transaction codes"""
    codes = db.query(TransactionCode).filter(TransactionCode.active == True).all()
    return [
        {
            "code": c.t_code,
            "description": c.description,
            "type": c.t_type,
            "default_rate": c.default_rate
        } for c in codes
    ]


@router.get("/lookups/transaction-types")
async def get_transaction_types(
    db: Session = Depends(get_db),
    current_user: User = Depends(get_current_user)
):
    """Get available transaction types"""
    types = db.query(TransactionType).filter(TransactionType.active == True).all()
    return [
        {
            "type": t.t_type,
            "description": t.description,
            "debit_credit": t.debit_credit
        } for t in types
    ]


@router.get("/reports/time-summary")
async def get_time_summary_report(
    start_date: date = Query(...),
    end_date: date = Query(...),
    employee: Optional[str] = Query(None),
    file_no: Optional[str] = Query(None),
    db: Session = Depends(get_db),
    current_user: User = Depends(get_current_user)
):
    """Generate time summary report"""
    query = db.query(Ledger)\
        .options(joinedload(Ledger.file).joinedload(File.owner))\
        .filter(and_(
            Ledger.date >= start_date,
            Ledger.date <= end_date,
            Ledger.t_type == "2"  # Time entries only
        ))\
        .order_by(Ledger.date)
    
    if employee:
        query = query.filter(Ledger.empl_num == employee)
    
    if file_no:
        query = query.filter(Ledger.file_no == file_no)
    
    entries = query.all()
    
    # Summarize by employee and file
    summary = {}
    total_hours = 0.0
    total_amount = 0.0
    
    for entry in entries:
        emp = entry.empl_num
        file_no = entry.file_no
        
        if emp not in summary:
            summary[emp] = {
                "employee": emp,
                "files": {},
                "total_hours": 0.0,
                "total_amount": 0.0
            }
        
        if file_no not in summary[emp]["files"]:
            file_obj = entry.file
            client = file_obj.owner if file_obj else None
            summary[emp]["files"][file_no] = {
                "file_no": file_no,
                "client_name": f"{client.first or ''} {client.last}".strip() if client else "Unknown",
                "matter": file_obj.regarding if file_obj else "",
                "hours": 0.0,
                "amount": 0.0,
                "entries": []
            }
        
        # Add entry details
        summary[emp]["files"][file_no]["entries"].append({
            "date": entry.date.isoformat(),
            "hours": entry.quantity,
            "rate": entry.rate,
            "amount": entry.amount,
            "description": entry.note,
            "billed": entry.billed == "Y"
        })
        
        # Update totals
        summary[emp]["files"][file_no]["hours"] += entry.quantity
        summary[emp]["files"][file_no]["amount"] += entry.amount
        summary[emp]["total_hours"] += entry.quantity
        summary[emp]["total_amount"] += entry.amount
        total_hours += entry.quantity
        total_amount += entry.amount
    
    # Convert to list format
    report_data = []
    for emp_data in summary.values():
        emp_data["files"] = list(emp_data["files"].values())
        report_data.append(emp_data)
    
    return {
        "report_period": {
            "start_date": start_date.isoformat(),
            "end_date": end_date.isoformat()
        },
        "summary": {
            "total_hours": total_hours,
            "total_amount": total_amount,
            "total_entries": len(entries)
        },
        "employees": report_data
    }


@router.post("/payments/")
async def record_payment(
    file_no: str,
    amount: float,
    payment_date: Optional[date] = None,
    payment_method: str = "CHECK",
    reference: Optional[str] = None,
    notes: Optional[str] = None,
    apply_to_trust: bool = False,
    db: Session = Depends(get_db),
    current_user: User = Depends(get_current_user)
):
    """Record a payment against a file"""
    # Verify file exists
    file_obj = db.query(File).filter(File.file_no == file_no).first()
    if not file_obj:
        raise HTTPException(status_code=404, detail="File not found")
    
    payment_date = payment_date or date.today()
    
    # Get next item number
    max_item = db.query(func.max(Ledger.item_no)).filter(
        Ledger.file_no == file_no
    ).scalar() or 0
    
    # Determine transaction type and code based on whether it goes to trust
    if apply_to_trust:
        t_type = "1"  # Trust
        t_code = "TRUST"
        description = f"Trust deposit - {payment_method}"
    else:
        t_type = "5"  # Credit/Payment
        t_code = "PMT"
        description = f"Payment received - {payment_method}"
    
    if reference:
        description += f" - Ref: {reference}"
    
    if notes:
        description += f" - {notes}"
    
    # Create payment entry
    entry = Ledger(
        file_no=file_no,
        item_no=max_item + 1,
        date=payment_date,
        t_code=t_code,
        t_type=t_type,
        t_type_l="C",  # Credit
        empl_num=file_obj.empl_num,
        quantity=0.0,
        rate=0.0,
        amount=amount,
        billed="Y",  # Payments are automatically considered "billed"
        note=description
    )
    
    db.add(entry)
    db.commit()
    db.refresh(entry)
    
    # Update file balances
    await _update_file_balances(file_obj, db)
    
    return {
        "id": entry.id,
        "message": f"Payment of ${amount} recorded successfully",
        "payment": {
            "amount": amount,
            "date": payment_date.isoformat(),
            "method": payment_method,
            "applied_to": "trust" if apply_to_trust else "balance",
            "reference": reference
        },
        "new_balance": {
            "amount_owing": file_obj.amount_owing,
            "trust_balance": file_obj.trust_bal
        }
    }


@router.post("/expenses/")
async def record_expense(
    file_no: str,
    amount: float,
    description: str,
    expense_date: Optional[date] = None,
    category: str = "MISC",
    employee: Optional[str] = None,
    receipts: bool = False,
    db: Session = Depends(get_db),
    current_user: User = Depends(get_current_user)
):
    """Record an expense/disbursement against a file"""
    # Verify file exists
    file_obj = db.query(File).filter(File.file_no == file_no).first()
    if not file_obj:
        raise HTTPException(status_code=404, detail="File not found")
    
    expense_date = expense_date or date.today()
    empl_num = employee or file_obj.empl_num
    
    # Get next item number
    max_item = db.query(func.max(Ledger.item_no)).filter(
        Ledger.file_no == file_no
    ).scalar() or 0
    
    # Add receipt info to description
    full_description = description
    if receipts:
        full_description += " (Receipts on file)"
    
    # Create expense entry
    entry = Ledger(
        file_no=file_no,
        item_no=max_item + 1,
        date=expense_date,
        t_code=category,
        t_type="4",  # Disbursements
        t_type_l="D",  # Debit
        empl_num=empl_num,
        quantity=0.0,
        rate=0.0,
        amount=amount,
        billed="N",
        note=full_description
    )
    
    db.add(entry)
    db.commit()
    db.refresh(entry)
    
    # Update file balances
    await _update_file_balances(file_obj, db)
    
    return {
        "id": entry.id,
        "message": f"Expense of ${amount} recorded successfully",
        "expense": {
            "amount": amount,
            "date": expense_date.isoformat(),
            "category": category,
            "description": description,
            "employee": empl_num
        }
    }