#!/usr/bin/env python3
"""
Orlan Military Drone Test Script
Simulates an Orlan military drone approaching from long distance to a target facility.
This test demonstrates the critical alert system for high-threat drones.
"""

import requests
import json
import time
import math
from datetime import datetime

# Configuration
API_BASE_URL = "http://selfservice.cqers.com/drones/api"

def haversine_distance(lat1, lon1, lat2, lon2):
    """Calculate distance between two points in kilometers"""
    R = 6371  # Earth's radius in kilometers
    
    dlat = math.radians(lat2 - lat1)
    dlon = math.radians(lon2 - lon1)
    
    a = (math.sin(dlat/2) * math.sin(dlat/2) + 
         math.cos(math.radians(lat1)) * math.cos(math.radians(lat2)) * 
         math.sin(dlon/2) * math.sin(dlon/2))
    c = 2 * math.atan2(math.sqrt(a), math.sqrt(1-a))
    
    return R * c

def rssi_from_distance(distance_km):
    """Calculate RSSI based on distance"""
    # Orlan drones have powerful transmission systems
    # Base RSSI at 1km = -60 dBm (stronger than consumer drones)
    base_rssi = -60
    path_loss_exponent = 2.5  # Lower path loss due to better equipment
    
    if distance_km < 0.001:  # Less than 1 meter
        return -30
    
    rssi = base_rssi - (20 * path_loss_exponent * math.log10(distance_km))
    return max(rssi, -100)  # Cap at -100 dBm

def fetch_devices():
    """Fetch devices from API"""
    try:
        response = requests.get(f"{API_BASE_URL}/devices/map")
        if response.status_code == 200:
            data = response.json()
            return data.get('data', [])
    except Exception as e:
        print(f"Error fetching devices: {e}")
    return []

def send_detection(device, drone_lat, drone_lon, distance_km, step, total_steps):
    """Send a detection to the API"""
    rssi = rssi_from_distance(distance_km)
    
    # Use the EXACT standard payload format - NEVER change this!
    detection_data = {
        "device_id": device["id"],
        "geo_lat": drone_lat,
        "geo_lon": drone_lon,
        "device_timestamp": int(time.time() * 1000),  # Current timestamp in milliseconds
        "drone_type": 1,    # Orlan/Military type
        "rssi": int(rssi),
        "freq": 24,  # Orlan operates on 2.4 GHz (24 = 2400 MHz)
        "drone_id": 1000 + step  # Unique drone ID for tracking
    }
    
    try:
        response = requests.post(f"{API_BASE_URL}/detections", json=detection_data)
        if response.status_code == 201:
            print(f"🚨 ORLAN DETECTION {step}/{total_steps}: Distance={distance_km:.2f}km, RSSI={rssi:.0f}dBm")
            return True
        else:
            print(f"Failed to send detection: {response.status_code}")
            return False
    except Exception as e:
        print(f"Error sending detection: {e}")
        return False

def run_orlan_approach_scenario():
    """Run the Orlan approach scenario"""
    print("=" * 60)
    print("🚨 ORLAN MILITARY DRONE APPROACH SIMULATION")
    print("=" * 60)
    print("This simulation demonstrates:")
    print("- Long-range Orlan drone detection")
    print("- Critical alert escalation")
    print("- Automatic threat assessment")
    print("- Real-time approach tracking")
    print("=" * 60)
    
    # Fetch devices
    devices = fetch_devices()
    if not devices:
        print("❌ No devices found!")
        return
    
    # Use the first device as target (usually Arlanda)
    target_device = devices[0]
    print(f"🎯 Target: {target_device['name']}")
    print(f"📍 Location: {target_device['geo_lat']:.4f}, {target_device['geo_lon']:.4f}")
    
    # Starting position: 15km northeast of target (simulating approach from hostile territory)
    start_distance = 15.0  # km
    angle = math.radians(45)  # 45 degrees (northeast)
    
    # Calculate starting position
    start_lat = target_device['geo_lat'] + (start_distance / 111.0) * math.cos(angle)
    start_lon = target_device['geo_lon'] + (start_distance / (111.0 * math.cos(math.radians(target_device['geo_lat'])))) * math.sin(angle)
    
    print(f"🛫 Orlan starting position: {start_lat:.4f}, {start_lon:.4f}")
    print(f"📏 Initial distance: {start_distance:.1f}km")
    print()
    
    # Simulation parameters
    total_steps = 30
    final_distance = 0.05  # 50 meters final approach
    
    print("Starting approach simulation...")
    print()
    
    for step in range(1, total_steps + 1):
        # Calculate current distance (exponential approach for realistic acceleration)
        progress = step / total_steps
        # Use exponential curve for more realistic approach pattern
        distance_km = start_distance * (1 - progress) ** 2 + final_distance * progress ** 2
        
        # Calculate current position
        current_lat = start_lat + (target_device['geo_lat'] - start_lat) * progress
        current_lon = start_lon + (target_device['geo_lon'] - start_lon) * progress
        
        # Send detection
        success = send_detection(target_device, current_lat, current_lon, distance_km, step, total_steps)
        
        if not success:
            print(f"❌ Failed to send detection at step {step}")
            continue
        
        # Show threat escalation messages
        if step == 1:
            print("   🔍 Initial long-range detection - monitoring")
        elif distance_km < 10 and step < 10:
            print("   ⚠️  Entering medium-range surveillance zone")
        elif distance_km < 5:
            print("   🚨 HIGH ALERT: Orlan approaching critical zone")
        elif distance_km < 1:
            print("   🔥 IMMEDIATE THREAT: Orlan within facility perimeter")
        elif distance_km < 0.2:
            print("   💥 CRITICAL: Orlan directly overhead - TAKE COVER")
        
        # Variable delay based on distance (faster updates as it gets closer)
        if distance_km > 10:
            delay = 3.0  # 3 seconds for long-range
        elif distance_km > 5:
            delay = 2.0  # 2 seconds for medium-range
        elif distance_km > 1:
            delay = 1.5  # 1.5 seconds for close-range
        else:
            delay = 1.0  # 1 second for critical proximity
        
        time.sleep(delay)
    
    print()
    print("=" * 60)
    print("🚨 ORLAN APPROACH SIMULATION COMPLETED")
    print("=" * 60)
    print("Summary:")
    print(f"- Total detections sent: {total_steps}")
    print(f"- Distance covered: {start_distance - final_distance:.1f}km")
    print(f"- Target facility: {target_device['name']}")
    print("- All alerts should have triggered critical notifications")
    print("- Check the dashboard for real-time tracking")
    print("=" * 60)

if __name__ == "__main__":
    try:
        run_orlan_approach_scenario()
    except KeyboardInterrupt:
        print("\n\n⚠️ Simulation interrupted by user")
    except Exception as e:
        print(f"\n❌ Error during simulation: {e}")