#!/usr/bin/env python3
"""
Script to clean up all test data from the Grocery Tracker application.
This will delete all shopping events, groceries, and shops.
"""

import requests
import json
from typing import List, Dict, Any

BASE_URL = "http://localhost:8000"

def delete_all_shopping_events() -> int:
    """Delete all shopping events and return the count of deleted events."""
    print("🛒 Deleting all shopping events...")
    
    try:
        # Get all shopping events
        response = requests.get(f"{BASE_URL}/shopping-events/")
        if response.status_code != 200:
            print(f"   ❌ Failed to fetch shopping events: {response.status_code}")
            return 0
        
        events = response.json()
        deleted_count = 0
        
        for event in events:
            try:
                delete_response = requests.delete(f"{BASE_URL}/shopping-events/{event['id']}")
                if delete_response.status_code == 200:
                    deleted_count += 1
                    print(f"   ✅ Deleted event #{event['id']} from {event['shop']['name']}")
                else:
                    print(f"   ❌ Failed to delete event #{event['id']}: {delete_response.status_code}")
            except Exception as e:
                print(f"   ❌ Error deleting event #{event['id']}: {e}")
        
        print(f"   📊 Deleted {deleted_count} shopping events total\n")
        return deleted_count
        
    except Exception as e:
        print(f"   ❌ Error fetching shopping events: {e}")
        return 0

def delete_all_groceries() -> int:
    """Delete all groceries and return the count of deleted groceries."""
    print("🥬 Deleting all groceries...")
    
    try:
        # Get all groceries
        response = requests.get(f"{BASE_URL}/groceries/")
        if response.status_code != 200:
            print(f"   ❌ Failed to fetch groceries: {response.status_code}")
            return 0
        
        groceries = response.json()
        deleted_count = 0
        
        for grocery in groceries:
            try:
                delete_response = requests.delete(f"{BASE_URL}/groceries/{grocery['id']}")
                if delete_response.status_code == 200:
                    deleted_count += 1
                    organic_label = "🌱" if grocery['organic'] else "🌾"
                    print(f"   ✅ Deleted grocery: {organic_label} {grocery['name']}")
                else:
                    print(f"   ❌ Failed to delete grocery {grocery['name']}: {delete_response.status_code}")
            except Exception as e:
                print(f"   ❌ Error deleting grocery {grocery['name']}: {e}")
        
        print(f"   📊 Deleted {deleted_count} groceries total\n")
        return deleted_count
        
    except Exception as e:
        print(f"   ❌ Error fetching groceries: {e}")
        return 0

def delete_all_shops() -> int:
    """Delete all shops and return the count of deleted shops."""
    print("🏪 Deleting all shops...")
    
    try:
        # Get all shops
        response = requests.get(f"{BASE_URL}/shops/")
        if response.status_code != 200:
            print(f"   ❌ Failed to fetch shops: {response.status_code}")
            return 0
        
        shops = response.json()
        deleted_count = 0
        
        for shop in shops:
            try:
                delete_response = requests.delete(f"{BASE_URL}/shops/{shop['id']}")
                if delete_response.status_code == 200:
                    deleted_count += 1
                    print(f"   ✅ Deleted shop: {shop['name']} ({shop['city']})")
                else:
                    print(f"   ❌ Failed to delete shop {shop['name']}: {delete_response.status_code}")
            except Exception as e:
                print(f"   ❌ Error deleting shop {shop['name']}: {e}")
        
        print(f"   📊 Deleted {deleted_count} shops total\n")
        return deleted_count
        
    except Exception as e:
        print(f"   ❌ Error fetching shops: {e}")
        return 0

def get_current_data_summary():
    """Get a summary of current data in the database."""
    print("📊 CURRENT DATA SUMMARY")
    print("=" * 30)
    
    try:
        # Get counts
        shops_response = requests.get(f"{BASE_URL}/shops/")
        groceries_response = requests.get(f"{BASE_URL}/groceries/")
        events_response = requests.get(f"{BASE_URL}/shopping-events/")
        
        shops_count = len(shops_response.json()) if shops_response.status_code == 200 else 0
        groceries_count = len(groceries_response.json()) if groceries_response.status_code == 200 else 0
        events_count = len(events_response.json()) if events_response.status_code == 200 else 0
        
        print(f"🏪 Shops: {shops_count}")
        print(f"🥬 Groceries: {groceries_count}")
        print(f"🛒 Shopping Events: {events_count}")
        
        if events_count > 0 and events_response.status_code == 200:
            events = events_response.json()
            total_spent = sum(event.get('total_amount', 0) for event in events)
            print(f"💰 Total spent: ${total_spent:.2f}")
        
        print()
        return shops_count, groceries_count, events_count
        
    except Exception as e:
        print(f"❌ Error getting data summary: {e}")
        return 0, 0, 0

def main():
    """Main function to clean up all test data."""
    print("🧹 GROCERY TRACKER DATA CLEANUP")
    print("=" * 40)
    print("This script will delete ALL data from the Grocery Tracker app.")
    print("Make sure the backend server is running on http://localhost:8000\n")
    
    try:
        # Test connection
        response = requests.get(f"{BASE_URL}/")
        if response.status_code != 200:
            print("❌ Cannot connect to the API server. Make sure it's running!")
            return
        
        print("✅ Connected to API server\n")
        
        # Show current data
        shops_count, groceries_count, events_count = get_current_data_summary()
        
        if shops_count == 0 and groceries_count == 0 and events_count == 0:
            print("✅ Database is already empty. Nothing to clean up!")
            return
        
        # Confirm deletion
        print("⚠️  WARNING: This will permanently delete all data!")
        confirmation = input("Type 'DELETE' to confirm: ")
        
        if confirmation != 'DELETE':
            print("❌ Cleanup cancelled.")
            return
        
        print("\n🧹 Starting cleanup process...\n")
        
        # Delete in order: events -> groceries -> shops
        # (due to foreign key constraints)
        deleted_events = delete_all_shopping_events()
        deleted_groceries = delete_all_groceries()
        deleted_shops = delete_all_shops()
        
        # Final summary
        print("📋 CLEANUP SUMMARY")
        print("=" * 30)
        print(f"🛒 Shopping Events deleted: {deleted_events}")
        print(f"🥬 Groceries deleted: {deleted_groceries}")
        print(f"🏪 Shops deleted: {deleted_shops}")
        print(f"📊 Total items deleted: {deleted_events + deleted_groceries + deleted_shops}")
        
        print("\n🎉 Cleanup completed successfully!")
        print("The database is now empty and ready for fresh data.")
        
    except requests.exceptions.ConnectionError:
        print("❌ Could not connect to the API server.")
        print("   Make sure the backend server is running on http://localhost:8000")
    except KeyboardInterrupt:
        print("\n❌ Cleanup cancelled by user.")
    except Exception as e:
        print(f"❌ Unexpected error: {e}")

if __name__ == "__main__":
    main()