"""
Seed data script for POS Microservice.
Populates MongoDB with sample catalogue services, staff, and customers.

Usage:
    python scripts/seed_data.py
    
Or with custom merchant_id:
    python scripts/seed_data.py --merchant-id <uuid>
"""
import asyncio
import argparse
import sys
from pathlib import Path
from uuid import uuid4
from datetime import datetime

# Add parent directory to path to import app modules
sys.path.insert(0, str(Path(__file__).parent.parent))

from app.nosql import connect_to_mongo, close_mongo_connection, get_database
from app.core.config import settings

# Use standard UUID for consistency across services  
MERCHANT_ID = "01234567-89ab-cdef-0123-456789abcdef"  # Cuatro Beauty Ltd UUID

# Sample Services
SAMPLE_SERVICES = [
    {
        "name": "Hair Cut – Women",
        "code": "HC-WOMEN-45",
        "category_id": "hair",
        "category_name": "Hair",
        "description": "Includes wash, cut and blow-dry",
        "duration_mins": 45,
        "price": 700,
        "gst_rate": 18,
    },
    {
        "name": "Hair Cut – Men",
        "code": "HC-MEN-30",
        "category_id": "hair",
        "category_name": "Hair",
        "description": "Standard men's haircut",
        "duration_mins": 30,
        "price": 400,
        "gst_rate": 18,
    },
    {
        "name": "Hair Color – Full",
        "code": "COL-FULL-120",
        "category_id": "hair",
        "category_name": "Hair",
        "description": "Complete hair coloring with premium products",
        "duration_mins": 120,
        "price": 3500,
        "gst_rate": 18,
    },
    {
        "name": "Hair Spa Treatment",
        "code": "SPA-HAIR-60",
        "category_id": "spa",
        "category_name": "Spa",
        "description": "Deep conditioning and scalp treatment",
        "duration_mins": 60,
        "price": 1500,
        "gst_rate": 18,
    },
    {
        "name": "Facial – Classic",
        "code": "FACE-CLS-45",
        "category_id": "facial",
        "category_name": "Facial",
        "description": "Deep cleansing facial with mask",
        "duration_mins": 45,
        "price": 1200,
        "gst_rate": 18,
    },
    {
        "name": "Manicure",
        "code": "MANI-30",
        "category_id": "nails",
        "category_name": "Nails",
        "description": "Classic manicure with nail polish",
        "duration_mins": 30,
        "price": 500,
        "gst_rate": 18,
    },
    {
        "name": "Pedicure",
        "code": "PEDI-45",
        "category_id": "nails",
        "category_name": "Nails",
        "description": "Classic pedicure with foot massage",
        "duration_mins": 45,
        "price": 700,
        "gst_rate": 18,
    },
    {
        "name": "Blow Dry & Styling",
        "code": "STYLE-30",
        "category_id": "hair",
        "category_name": "Hair",
        "description": "Professional blow dry and styling",
        "duration_mins": 30,
        "price": 600,
        "gst_rate": 18,
    },
    {
        "name": "Makeup – Party",
        "code": "MKP-PARTY-60",
        "category_id": "makeup",
        "category_name": "Makeup",
        "description": "Party makeup with false lashes",
        "duration_mins": 60,
        "price": 2500,
        "gst_rate": 18,
    },
    {
        "name": "Waxing – Full Arms",
        "code": "WAX-ARMS-20",
        "category_id": "waxing",
        "category_name": "Waxing",
        "description": "Full arms waxing",
        "duration_mins": 20,
        "price": 400,
        "gst_rate": 18,
    },
]

# Sample Staff
SAMPLE_STAFF = [
    {
        "name": "Priya Sharma",
        "role": "Senior Stylist",
        "staff_code": "STF001",
        "phone": "+91-9876543210",
        "email": "priya.sharma@retail.com",
        "skills": ["Haircut", "Color", "Styling", "Hair Spa"],
        "working_hours": [
            {"day": "Mon", "from": "10:00", "to": "19:00"},
            {"day": "Tue", "from": "10:00", "to": "19:00"},
            {"day": "Wed", "from": "10:00", "to": "19:00"},
            {"day": "Thu", "from": "10:00", "to": "19:00"},
            {"day": "Fri", "from": "10:00", "to": "19:00"},
            {"day": "Sat", "from": "11:00", "to": "18:00"},
        ],
    },
    {
        "name": "Rajesh Kumar",
        "role": "Stylist",
        "staff_code": "STF002",
        "phone": "+91-9876543211",
        "email": "rajesh.kumar@retail.com",
        "skills": ["Haircut", "Styling", "Beard Trim"],
        "working_hours": [
            {"day": "Mon", "from": "10:00", "to": "19:00"},
            {"day": "Tue", "from": "10:00", "to": "19:00"},
            {"day": "Wed", "from": "10:00", "to": "19:00"},
            {"day": "Thu", "from": "10:00", "to": "19:00"},
            {"day": "Fri", "from": "10:00", "to": "19:00"},
        ],
    },
    {
        "name": "Anjali Verma",
        "role": "Makeup Artist",
        "staff_code": "STF003",
        "phone": "+91-9876543212",
        "email": "anjali.verma@retail.com",
        "skills": ["Makeup", "Facial", "Bridal Makeup"],
        "working_hours": [
            {"day": "Tue", "from": "11:00", "to": "20:00"},
            {"day": "Wed", "from": "11:00", "to": "20:00"},
            {"day": "Thu", "from": "11:00", "to": "20:00"},
            {"day": "Fri", "from": "11:00", "to": "20:00"},
            {"day": "Sat", "from": "10:00", "to": "19:00"},
            {"day": "Sun", "from": "10:00", "to": "17:00"},
        ],
    },
    {
        "name": "Meera Patel",
        "role": "Nail Technician",
        "staff_code": "STF004",
        "phone": "+91-9876543213",
        "email": "meera.patel@retail.com",
        "skills": ["Manicure", "Pedicure", "Nail Art"],
        "working_hours": [
            {"day": "Mon", "from": "10:00", "to": "19:00"},
            {"day": "Tue", "from": "10:00", "to": "19:00"},
            {"day": "Wed", "from": "10:00", "to": "19:00"},
            {"day": "Thu", "from": "10:00", "to": "19:00"},
            {"day": "Fri", "from": "10:00", "to": "19:00"},
            {"day": "Sat", "from": "11:00", "to": "18:00"},
        ],
    },
]

# Sample Customers
SAMPLE_CUSTOMERS = [
    {
        "name": "Neha Kapoor",
        "phone": "+91-9988776655",
        "email": "neha.kapoor@example.com",
        "notes": "Regular customer, prefers morning appointments",
    },
    {
        "name": "Arjun Reddy",
        "phone": "+91-9988776656",
        "email": "arjun.reddy@example.com",
        "notes": "Walk-in customer",
    },
    {
        "name": "Kavya Nair",
        "phone": "+91-9988776657",
        "email": "kavya.nair@example.com",
        "notes": "Prefers specific stylist - Priya",
    },
]


async def seed_services(merchant_id: str):
    """Seed catalogue services."""
    db = get_database()
    if db is None:
        print("❌ MongoDB not connected. Cannot seed data.")
        return False
    
    collection = db["catalogue_services"]
    print("\n📋 Seeding Catalogue Services...")
    
    created_count = 0
    skipped_count = 0
    
    for service in SAMPLE_SERVICES:
        # Check if service code already exists
        existing = await collection.find_one({
            "merchant_id": merchant_id,
            "code": service["code"]
        })
        
        if existing:
            print(f"  ⏭️  Skipped: {service['name']} (code: {service['code']}) - already exists")
            skipped_count += 1
            continue
        
        service_id = str(uuid4())
        now = datetime.utcnow()
        
        doc = {
            "_id": service_id,
            "merchant_id": merchant_id,
            "name": service["name"],
            "code": service["code"],
            "category": {
                "id": service["category_id"],
                "name": service["category_name"]
            },
            "description": service["description"],
            "duration_mins": service["duration_mins"],
            "pricing": {
                "price": service["price"],
                "currency": "INR",
                "gst_rate": service["gst_rate"]
            },
            "status": "active",
            "sort_order": created_count,
            "created_at": now,
            "updated_at": now
        }
        
        await collection.insert_one(doc)
        print(f"  ✅ Created: {service['name']} (₹{service['price']}, {service['duration_mins']} mins)")
        created_count += 1
    
    print(f"\n  📊 Services: {created_count} created, {skipped_count} skipped")
    return True


async def seed_staff(merchant_id: str):
    """Seed staff members."""
    db = get_database()
    if db is None:
        print("❌ MongoDB not connected. Cannot seed data.")
        return False
    
    collection = db["pos_staff"]
    print("\n👥 Seeding Staff...")
    
    created_count = 0
    skipped_count = 0
    
    for staff in SAMPLE_STAFF:
        # Check if staff code already exists
        existing = await collection.find_one({
            "merchant_id": merchant_id,
            "staff_code": staff["staff_code"]
        })
        
        if existing:
            print(f"  ⏭️  Skipped: {staff['name']} ({staff['staff_code']}) - already exists")
            skipped_count += 1
            continue
        
        staff_id = f"staff_{uuid4().hex[:16]}"
        now = datetime.utcnow()
        
        doc = {
            "staff_id": staff_id,
            "merchant_id": merchant_id,
            "name": staff["name"],
            "role": staff["role"],
            "staff_code": staff["staff_code"],
            "contact": {
                "phone": staff["phone"],
                "email": staff["email"]
            },
            "skills": staff["skills"],
            "status": "active",
            "working_hours": staff["working_hours"],
            "created_at": now,
            "updated_at": now
        }
        
        await collection.insert_one(doc)
        print(f"  ✅ Created: {staff['name']} - {staff['role']}")
        created_count += 1
    
    print(f"\n  📊 Staff: {created_count} created, {skipped_count} skipped")
    return True


async def seed_customers(merchant_id: str):
    """Seed sample customers."""
    db = get_database()
    if db is None:
        print("❌ MongoDB not connected. Cannot seed data.")
        return False
    
    collection = db["pos_customers"]
    print("\n👤 Seeding Customers...")
    
    created_count = 0
    skipped_count = 0
    
    for customer in SAMPLE_CUSTOMERS:
        # Check if customer phone already exists
        existing = await collection.find_one({
            "merchant_id": merchant_id,
            "phone": customer["phone"]
        })
        
        if existing:
            print(f"  ⏭️  Skipped: {customer['name']} ({customer['phone']}) - already exists")
            skipped_count += 1
            continue
        
        customer_id = str(uuid4())
        now = datetime.utcnow()
        
        doc = {
            "customer_id": customer_id,
            "merchant_id": merchant_id,
            "name": customer["name"],
            "phone": customer["phone"],
            "email": customer["email"],
            "notes": customer["notes"],
            "created_at": now,
            "updated_at": now
        }
        
        await collection.insert_one(doc)
        print(f"  ✅ Created: {customer['name']} ({customer['phone']})")
        created_count += 1
    
    print(f"\n  📊 Customers: {created_count} created, {skipped_count} skipped")
    return True


async def main(merchant_id: str):
    """Main seed function."""
    print("="*60)
    print("🌱 POS Microservice - Seed Data Script")
    print("="*60)
    print(f"\n📍 Merchant ID: {merchant_id}")
    print(f"📍 MongoDB URI: {settings.MONGODB_URI}")
    print(f"📍 Database: {settings.MONGODB_DB_NAME}")
    
    # Connect to MongoDB
    try:
        await connect_to_mongo()
    except Exception as e:
        print(f"\n❌ Failed to connect to MongoDB: {e}")
        print("\n💡 Make sure MongoDB is running:")
        print("   docker run -d --name mongo -p 27017:27017 mongo:6")
        return
    
    # Seed data
    try:
        success = True
        success = await seed_services(merchant_id) and success
        success = await seed_staff(merchant_id) and success
        success = await seed_customers(merchant_id) and success
        
        if success:
            print("\n" + "="*60)
            print("✅ Seed data completed successfully!")
            print("="*60)
            print("\n💡 You can now:")
            print("   1. Start the API: uvicorn app.main:app --reload --port 8282")
            print(f"   2. List services: GET /api/v1/pos/catalogue/services?merchant_id={merchant_id}")
            print(f"   3. Create appointments with the seeded services and staff")
        else:
            print("\n⚠️  Seed data completed with some issues")
    except Exception as e:
        print(f"\n❌ Error during seeding: {e}")
        import traceback
        traceback.print_exc()
    finally:
        await close_mongo_connection()


if __name__ == "__main__":
    parser = argparse.ArgumentParser(description="Seed POS microservice data")
    parser.add_argument(
        "--merchant-id",
        type=str,
        default=MERCHANT_ID,
        help=f"Merchant UUID (default: {MERCHANT_ID})"
    )
    
    args = parser.parse_args()
    
    asyncio.run(main(args.merchant_id))