bmc_hub/app/customers/backend/router.py

"""
Customers Router
API endpoints for customer management
Adapted from OmniSync for BMC Hub
"""

from fastapi import APIRouter, HTTPException, Query
from typing import List, Optional, Dict
from pydantic import BaseModel
import logging

from app.core.database import execute_query, execute_insert, execute_update
from app.services.cvr_service import get_cvr_service

logger = logging.getLogger(__name__)

router = APIRouter()


# Pydantic Models
class CustomerBase(BaseModel):
    name: str
    cvr_number: Optional[str] = None
    email: Optional[str] = None
    phone: Optional[str] = None
    address: Optional[str] = None
    city: Optional[str] = None
    postal_code: Optional[str] = None
    country: Optional[str] = "DK"
    website: Optional[str] = None
    is_active: Optional[bool] = True
    invoice_email: Optional[str] = None
    mobile_phone: Optional[str] = None


class CustomerCreate(CustomerBase):
    pass


class CustomerUpdate(BaseModel):
    name: Optional[str] = None
    cvr_number: Optional[str] = None
    email: Optional[str] = None
    phone: Optional[str] = None
    address: Optional[str] = None
    city: Optional[str] = None
    postal_code: Optional[str] = None
    country: Optional[str] = None
    website: Optional[str] = None
    is_active: Optional[bool] = None
    invoice_email: Optional[str] = None
    mobile_phone: Optional[str] = None


class ContactCreate(BaseModel):
    first_name: str
    last_name: str
    email: Optional[str] = None
    phone: Optional[str] = None
    mobile: Optional[str] = None
    title: Optional[str] = None
    department: Optional[str] = None
    is_primary: Optional[bool] = False
    role: Optional[str] = None


@router.get("/customers")
async def list_customers(
    limit: int = Query(default=50, ge=1, le=1000),
    offset: int = Query(default=0, ge=0),
    search: Optional[str] = Query(default=None),
    source: Optional[str] = Query(default=None),  # 'vtiger', 'local', or None
    is_active: Optional[bool] = Query(default=None)
):
    """
    List customers with pagination and filtering
    
    Args:
        limit: Maximum number of customers to return
        offset: Number of customers to skip
        search: Search term for name, email, cvr, phone, city
        source: Filter by source ('vtiger' or 'local')
        is_active: Filter by active status
    """
    # Build query
    query = """
        SELECT 
            c.*,
            COUNT(DISTINCT cc.contact_id) as contact_count
        FROM customers c
        LEFT JOIN contact_companies cc ON cc.customer_id = c.id
        WHERE 1=1
    """
    params = []
    
    # Add search filter
    if search:
        query += """ AND (
            c.name ILIKE %s OR
            c.email ILIKE %s OR
            c.cvr_number ILIKE %s OR
            c.phone ILIKE %s OR
            c.city ILIKE %s
        )"""
        search_term = f"%{search}%"
        params.extend([search_term] * 5)
    
    # Add source filter
    if source == 'vtiger':
        query += " AND c.vtiger_id IS NOT NULL"
    elif source == 'local':
        query += " AND c.vtiger_id IS NULL"
    
    # Add active filter
    if is_active is not None:
        query += " AND c.is_active = %s"
        params.append(is_active)
    
    query += """ 
        GROUP BY c.id
        ORDER BY c.name 
        LIMIT %s OFFSET %s
    """
    params.extend([limit, offset])
    
    rows = execute_query(query, tuple(params))
    
    # Get total count
    count_query = "SELECT COUNT(*) as total FROM customers WHERE 1=1"
    count_params = []
    
    if search:
        count_query += """ AND (
            name ILIKE %s OR
            email ILIKE %s OR
            cvr_number ILIKE %s OR
            phone ILIKE %s OR
            city ILIKE %s
        )"""
        count_params.extend([search_term] * 5)
    
    if source == 'vtiger':
        count_query += " AND vtiger_id IS NOT NULL"
    elif source == 'local':
        count_query += " AND vtiger_id IS NULL"
    
    if is_active is not None:
        count_query += " AND is_active = %s"
        count_params.append(is_active)
    
    count_result = execute_query(count_query, tuple(count_params), fetchone=True)
    total = count_result['total'] if count_result else 0
    
    return {
        "customers": rows or [],
        "total": total,
        "limit": limit,
        "offset": offset
    }


@router.get("/customers/{customer_id}")
async def get_customer(customer_id: int):
    """Get single customer by ID with contact count and vTiger BMC Låst status"""
    # Get customer
    customer = execute_query(
        "SELECT * FROM customers WHERE id = %s",
        (customer_id,),
        fetchone=True
    )
    
    if not customer:
        raise HTTPException(status_code=404, detail="Customer not found")
    
    # Get contact count
    contact_count_result = execute_query(
        "SELECT COUNT(*) as count FROM contact_companies WHERE customer_id = %s",
        (customer_id,),
        fetchone=True
    )
    
    contact_count = contact_count_result['count'] if contact_count_result else 0
    
    # Get BMC Låst from vTiger if customer has vtiger_id
    bmc_locked = False
    if customer.get('vtiger_id'):
        try:
            from app.services.vtiger_service import get_vtiger_service
            vtiger = get_vtiger_service()
            account = await vtiger.get_account(customer['vtiger_id'])
            if account:
                # cf_accounts_bmclst is the BMC Låst field (checkbox: 1 = locked, 0 = not locked)
                bmc_locked = account.get('cf_accounts_bmclst') == '1'
        except Exception as e:
            logger.error(f"❌ Error fetching BMC Låst status: {e}")
    
    return {
        **customer,
        'contact_count': contact_count,
        'bmc_locked': bmc_locked
    }


@router.post("/customers")
async def create_customer(customer: CustomerCreate):
    """Create a new customer"""
    try:
        customer_id = execute_insert(
            """INSERT INTO customers 
               (name, cvr_number, email, phone, address, city, postal_code, 
                country, website, is_active, invoice_email, mobile_phone)
               VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s)
               RETURNING id""",
            (
                customer.name,
                customer.cvr_number,
                customer.email,
                customer.phone,
                customer.address,
                customer.city,
                customer.postal_code,
                customer.country,
                customer.website,
                customer.is_active,
                customer.invoice_email,
                customer.mobile_phone
            )
        )
        
        logger.info(f"✅ Created customer {customer_id}: {customer.name}")
        
        # Fetch and return created customer
        created = execute_query(
            "SELECT * FROM customers WHERE id = %s",
            (customer_id,),
            fetchone=True
        )
        return created
        
    except Exception as e:
        logger.error(f"❌ Failed to create customer: {e}")
        raise HTTPException(status_code=500, detail=str(e))


@router.put("/customers/{customer_id}")
async def update_customer(customer_id: int, update: CustomerUpdate):
    """Update customer information"""
    # Verify customer exists
    existing = execute_query(
        "SELECT id FROM customers WHERE id = %s",
        (customer_id,),
        fetchone=True
    )
    if not existing:
        raise HTTPException(status_code=404, detail="Customer not found")
    
    # Build dynamic UPDATE query
    updates = []
    params = []
    
    update_dict = update.dict(exclude_unset=True)
    for field, value in update_dict.items():
        updates.append(f"{field} = %s")
        params.append(value)
    
    if not updates:
        raise HTTPException(status_code=400, detail="No fields to update")
    
    params.append(customer_id)
    
    query = f"UPDATE customers SET {', '.join(updates)}, updated_at = CURRENT_TIMESTAMP WHERE id = %s"
    
    try:
        execute_update(query, tuple(params))
        logger.info(f"✅ Updated customer {customer_id}")
        
        # Fetch and return updated customer
        updated = execute_query(
            "SELECT * FROM customers WHERE id = %s",
            (customer_id,),
            fetchone=True
        )
        return updated
        
    except Exception as e:
        logger.error(f"❌ Failed to update customer {customer_id}: {e}")
        raise HTTPException(status_code=500, detail=str(e))


@router.post("/customers/{customer_id}/subscriptions/lock")
async def lock_customer_subscriptions(customer_id: int, lock_request: dict):
    """Lock/unlock subscriptions for customer in local DB - BMC Låst status controlled in vTiger"""
    try:
        locked = lock_request.get('locked', False)
        
        # Get customer
        customer = execute_query(
            "SELECT id, name FROM customers WHERE id = %s",
            (customer_id,),
            fetchone=True
        )
        
        if not customer:
            raise HTTPException(status_code=404, detail="Customer not found")
        
        # Update local database only
        execute_update(
            "UPDATE customers SET subscriptions_locked = %s WHERE id = %s",
            (locked, customer_id)
        )
        logger.info(f"✅ Updated local subscriptions_locked={locked} for customer {customer_id}")
        
        return {
            "status": "success",
            "message": f"Abonnementer er nu {'låst' if locked else 'låst op'} i BMC Hub",
            "customer_id": customer_id,
            "note": "BMC Låst status i vTiger skal sættes manuelt i vTiger"
        }
        
    except HTTPException:
        raise
    except Exception as e:
        logger.error(f"❌ Error locking subscriptions: {e}")
        raise HTTPException(status_code=500, detail=str(e))


@router.get("/customers/{customer_id}/contacts")
async def get_customer_contacts(customer_id: int):
    """Get all contacts for a specific customer"""
    rows = execute_query("""
        SELECT 
            c.*,
            cc.is_primary,
            cc.role,
            cc.notes
        FROM contacts c
        JOIN contact_companies cc ON c.id = cc.contact_id
        WHERE cc.customer_id = %s AND c.is_active = TRUE
        ORDER BY cc.is_primary DESC, c.first_name, c.last_name
    """, (customer_id,))
    
    return rows or []


@router.post("/customers/{customer_id}/contacts")
async def create_customer_contact(customer_id: int, contact: ContactCreate):
    """Create a new contact for a customer"""
    # Verify customer exists
    customer = execute_query(
        "SELECT id FROM customers WHERE id = %s",
        (customer_id,),
        fetchone=True
    )
    if not customer:
        raise HTTPException(status_code=404, detail="Customer not found")
    
    try:
        # Create contact
        contact_id = execute_insert(
            """INSERT INTO contacts 
               (first_name, last_name, email, phone, mobile, title, department)
               VALUES (%s, %s, %s, %s, %s, %s, %s)
               RETURNING id""",
            (
                contact.first_name,
                contact.last_name,
                contact.email,
                contact.phone,
                contact.mobile,
                contact.title,
                contact.department
            )
        )
        
        # Link contact to customer
        execute_insert(
            """INSERT INTO contact_companies 
               (contact_id, customer_id, is_primary, role)
               VALUES (%s, %s, %s, %s)""",
            (contact_id, customer_id, contact.is_primary, contact.role)
        )
        
        logger.info(f"✅ Created contact {contact_id} for customer {customer_id}")
        
        # Fetch and return created contact
        created = execute_query(
            "SELECT * FROM contacts WHERE id = %s",
            (contact_id,),
            fetchone=True
        )
        return created
        
    except Exception as e:
        logger.error(f"❌ Failed to create contact: {e}")
        raise HTTPException(status_code=500, detail=str(e))


@router.get("/cvr/{cvr_number}")
async def lookup_cvr(cvr_number: str):
    """Lookup company information by CVR number"""
    cvr_service = get_cvr_service()
    
    result = await cvr_service.lookup_by_cvr(cvr_number)
    
    if not result:
        raise HTTPException(status_code=404, detail="CVR number not found")
    
    return result


@router.get("/customers/{customer_id}/subscriptions")
async def get_customer_subscriptions(customer_id: int):
    """
    Get subscriptions and sales orders for a customer
    Returns data from vTiger:
    1. Recurring Sales Orders (enable_recurring = 1)
    2. Sales Orders with recurring_frequency (open status)
    3. Recent Invoices for context
    """
    from app.services.vtiger_service import get_vtiger_service
    
    # Get customer with vTiger ID
    customer = execute_query(
        "SELECT id, name, vtiger_id FROM customers WHERE id = %s",
        (customer_id,),
        fetchone=True
    )
    
    if not customer:
        raise HTTPException(status_code=404, detail="Customer not found")
    
    vtiger_id = customer.get('vtiger_id')
    
    if not vtiger_id:
        logger.warning(f"⚠️ Customer {customer_id} has no vTiger ID")
        return {
            "status": "no_vtiger_link",
            "message": "Kunde er ikke synkroniseret med vTiger",
            "recurring_orders": [],
            "sales_orders": [],
            "invoices": []
        }
    
    try:
        vtiger = get_vtiger_service()
        
        # Fetch all sales orders
        logger.info(f"🔍 Fetching sales orders for vTiger account {vtiger_id}")
        all_orders = await vtiger.get_customer_sales_orders(vtiger_id)
        
        # Fetch subscriptions from vTiger
        logger.info(f"🔍 Fetching subscriptions for vTiger account {vtiger_id}")
        subscriptions = await vtiger.get_customer_subscriptions(vtiger_id)
        
        # Filter sales orders into categories
        recurring_orders = []
        frequency_orders = []
        all_open_orders = []
        
        for order in all_orders:
            # Skip closed/cancelled orders
            status = order.get('sostatus', '').lower()
            if status in ['closed', 'cancelled']:
                continue
            
            all_open_orders.append(order)
            
            # Check if recurring is enabled
            enable_recurring = order.get('enable_recurring')
            recurring_frequency = order.get('recurring_frequency', '').strip()
            
            if enable_recurring == '1' or enable_recurring == 1:
                recurring_orders.append(order)
            elif recurring_frequency:
                frequency_orders.append(order)
        
        # Filter subscriptions by status
        active_subscriptions = []
        expired_subscriptions = []
        
        for sub in subscriptions:
            status = sub.get('sub_status', '').lower()
            if status in ['cancelled', 'expired']:
                expired_subscriptions.append(sub)
            else:
                active_subscriptions.append(sub)
        
        # Fetch Simply-CRM sales orders (open orders from old system)
        # NOTE: Simply-CRM has DIFFERENT IDs than vTiger Cloud! Must match by name or CVR.
        simplycrm_sales_orders = []
        try:
            from app.services.simplycrm_service import SimplyCRMService
            async with SimplyCRMService() as simplycrm:
                # First, find the Simply-CRM account by name
                customer_name = customer.get('name', '').strip()
                if customer_name:
                    # Search for account in Simply-CRM by name
                    account_query = f"SELECT id FROM Accounts WHERE accountname='{customer_name}';"
                    simplycrm_accounts = await simplycrm.query(account_query)
                    
                    if simplycrm_accounts and len(simplycrm_accounts) > 0:
                        simplycrm_account_id = simplycrm_accounts[0].get('id')
                        logger.info(f"🔍 Found Simply-CRM account: {simplycrm_account_id} for '{customer_name}'")
                        
                        # Query open sales orders from Simply-CRM using the correct ID
                        # Note: Simply-CRM returns one row per line item, so we need to group them
                        query = f"SELECT * FROM SalesOrder WHERE account_id='{simplycrm_account_id}';"
                        all_simplycrm_orders = await simplycrm.query(query)
                        
                        # Group line items by order ID
                        # Filter: Only include orders with recurring_frequency (otherwise not subscription)
                        orders_dict = {}
                        for row in (all_simplycrm_orders or []):
                            status = row.get('sostatus', '').lower()
                            if status in ['closed', 'cancelled']:
                                continue
                            
                            # MUST have recurring_frequency to be a subscription
                            recurring_frequency = row.get('recurring_frequency', '').strip()
                            if not recurring_frequency:
                                continue
                            
                            order_id = row.get('id')
                            if order_id not in orders_dict:
                                # First occurrence - create order object
                                orders_dict[order_id] = dict(row)
                                orders_dict[order_id]['lineItems'] = []
                            
                            # Add line item if productid exists
                            if row.get('productid'):
                                # Fetch product name
                                product_name = 'Unknown Product'
                                try:
                                    product_query = f"SELECT productname FROM Products WHERE id='{row.get('productid')}';"
                                    product_result = await simplycrm.query(product_query)
                                    if product_result and len(product_result) > 0:
                                        product_name = product_result[0].get('productname', product_name)
                                except:
                                    pass
                                
                                orders_dict[order_id]['lineItems'].append({
                                    'productid': row.get('productid'),
                                    'product_name': product_name,
                                    'quantity': row.get('quantity'),
                                    'listprice': row.get('listprice'),
                                    'netprice': float(row.get('quantity', 0)) * float(row.get('listprice', 0)),
                                    'comment': row.get('comment', '')
                                })
                        
                        simplycrm_sales_orders = list(orders_dict.values())
                        logger.info(f"📥 Found {len(simplycrm_sales_orders)} unique open sales orders in Simply-CRM")
                    else:
                        logger.info(f"ℹ️ No Simply-CRM account found for '{customer_name}'")
        except Exception as e:
            logger.warning(f"⚠️ Could not fetch Simply-CRM sales orders: {e}")
        
        # Fetch BMC Office subscriptions from local database
        bmc_office_query = """
            SELECT * FROM bmc_office_subscription_totals
            WHERE customer_id = %s AND active = true
            ORDER BY start_date DESC
        """
        bmc_office_subs = execute_query(bmc_office_query, (customer_id,)) or []
        
        logger.info(f"✅ Found {len(recurring_orders)} recurring orders, {len(frequency_orders)} frequency orders, {len(all_open_orders)} vTiger orders, {len(simplycrm_sales_orders)} Simply-CRM orders, {len(active_subscriptions)} active subscriptions, {len(bmc_office_subs)} BMC Office subscriptions")
        
        return {
            "status": "success",
            "customer_id": customer_id,
            "customer_name": customer['name'],
            "vtiger_id": vtiger_id,
            "recurring_orders": recurring_orders,
            "sales_orders": simplycrm_sales_orders,  # Open sales orders from Simply-CRM
            "subscriptions": active_subscriptions,  # Active subscriptions from vTiger Subscriptions module
            "expired_subscriptions": expired_subscriptions,
            "bmc_office_subscriptions": bmc_office_subs,  # Local BMC Office subscriptions
            "last_updated": "real-time"
        }
        
    except Exception as e:
        logger.error(f"❌ Error fetching subscriptions: {e}")
        raise HTTPException(status_code=500, detail=f"Failed to fetch subscriptions: {str(e)}")


class SubscriptionCreate(BaseModel):
    subject: str
    account_id: str  # vTiger account ID
    startdate: str  # YYYY-MM-DD
    enddate: Optional[str] = None  # YYYY-MM-DD
    generateinvoiceevery: str  # "Monthly", "Quarterly", "Yearly"
    subscriptionstatus: Optional[str] = "Active"
    products: List[Dict]  # [{"productid": "id", "quantity": 1, "listprice": 100}]


class SubscriptionUpdate(BaseModel):
    subject: Optional[str] = None
    startdate: Optional[str] = None
    enddate: Optional[str] = None
    generateinvoiceevery: Optional[str] = None
    subscriptionstatus: Optional[str] = None
    products: Optional[List[Dict]] = None


@router.post("/customers/{customer_id}/subscriptions")
async def create_subscription(customer_id: int, subscription: SubscriptionCreate):
    """Create new subscription in vTiger"""
    try:
        # Get customer's vTiger ID
        customer = execute_query(
            "SELECT vtiger_id FROM customers WHERE id = %s",
            (customer_id,),
            fetchone=True
        )
        
        if not customer or not customer.get('vtiger_id'):
            raise HTTPException(status_code=404, detail="Customer not linked to vTiger")
        
        # Create subscription in vTiger
        from app.services.vtiger_service import VTigerService
        async with VTigerService() as vtiger:
            result = await vtiger.create_subscription(
                account_id=customer['vtiger_id'],
                subject=subscription.subject,
                startdate=subscription.startdate,
                enddate=subscription.enddate,
                generateinvoiceevery=subscription.generateinvoiceevery,
                subscriptionstatus=subscription.subscriptionstatus,
                products=subscription.products
            )
            
        logger.info(f"✅ Created subscription {result.get('id')} for customer {customer_id}")
        return {"status": "success", "subscription": result}
        
    except Exception as e:
        logger.error(f"❌ Error creating subscription: {e}")
        raise HTTPException(status_code=500, detail=str(e))


@router.get("/subscriptions/{subscription_id}")
async def get_subscription_details(subscription_id: str):
    """Get full subscription details with line items from vTiger"""
    try:
        from app.services.vtiger_service import get_vtiger_service
        vtiger = get_vtiger_service()
        
        subscription = await vtiger.get_subscription(subscription_id)
        
        if not subscription:
            raise HTTPException(status_code=404, detail="Subscription not found")
        
        return {"status": "success", "subscription": subscription}
        
    except Exception as e:
        logger.error(f"❌ Error fetching subscription: {e}")
        raise HTTPException(status_code=500, detail=str(e))


@router.put("/subscriptions/{subscription_id}")
async def update_subscription(subscription_id: str, subscription: SubscriptionUpdate):
    """Update subscription in vTiger including line items/prices"""
    try:
        from app.services.vtiger_service import get_vtiger_service
        vtiger = get_vtiger_service()
        
        # Extract products/line items if provided
        update_dict = subscription.dict(exclude_unset=True)
        line_items = update_dict.pop('products', None)
        
        result = await vtiger.update_subscription(
            subscription_id=subscription_id,
            updates=update_dict,
            line_items=line_items
        )
        
        logger.info(f"✅ Updated subscription {subscription_id}")
        return {"status": "success", "subscription": result}
        
    except Exception as e:
        logger.error(f"❌ Error updating subscription: {e}")
        raise HTTPException(status_code=500, detail=str(e))


@router.delete("/subscriptions/{subscription_id}")
async def delete_subscription(subscription_id: str, customer_id: int = None):
    """Delete (deactivate) subscription in vTiger - respects customer lock status"""
    try:
        # Check if subscriptions are locked for this customer (if customer_id provided)
        if customer_id:
            customer = execute_query(
                "SELECT subscriptions_locked FROM customers WHERE id = %s",
                (customer_id,),
                fetchone=True
            )
            if customer and customer.get('subscriptions_locked'):
                raise HTTPException(
                    status_code=403, 
                    detail="Abonnementer er låst for denne kunde. Kan kun redigeres direkte i vTiger."
                )
        
        from app.services.vtiger_service import get_vtiger_service
        vtiger = get_vtiger_service()
        
        # Set status to Cancelled instead of deleting
        result = await vtiger.update_subscription(
            subscription_id=subscription_id,
            updates={"subscriptionstatus": "Cancelled"},
            line_items=None
        )
        
        logger.info(f"✅ Cancelled subscription {subscription_id}")
        return {"status": "success", "message": "Subscription cancelled"}
        
    except HTTPException:
        raise
    except Exception as e:
        logger.error(f"❌ Error deleting subscription: {e}")
        raise HTTPException(status_code=500, detail=str(e))