using System.Collections;
using System.Collections.Generic;
using System.Runtime.InteropServices.WindowsRuntime;
using UnityEngine;

public class Fleet : MonoBehaviour
{
    public float TravelDistanceTotal = 0;
    public int TravelTimeTotal = 0;
    public string Name { get; set; }
    public GameObject CurrentLocation;
    public GameObject Destination;
    public List<Ship> Ships = new();
    // Start is called before the first frame update
    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {
        
    }
    public int GetNumberOfShips() 
    {
        return Ships.Count;
    }
    public int GetStrength() 
    {
        int result = 0;
        foreach (Ship g in Ships) 
        {
            result += g.Strength;
        }
        return result;
    }
    public int GetSpeed() 
    {
        int result = FleetManager.maxSpeed;
        foreach (Ship g in Ships) 
        {
            if (g.Speed < result) 
            {
                result = g.Speed;
            }
        }
        return result;
    }
    public float GetTravelDistanceTotal() 
    {
        float result = 0;
        Vector3 dest = Destination.transform.position;
        Vector3 curr = CurrentLocation.transform.position;
        Vector3 path = dest - curr;
        result = path.magnitude;
        return result;
    }
   
    public int GetTravelTimeTotal() 
    {
        int result = 0;
        result =  (int) (this.TravelDistanceTotal / this.GetSpeed());
        return result;
    }
  
    public void SetDestination(GameObject destStarSystem) 
    {
        if(this.CurrentLocation == destStarSystem)
        {
            return;
        }
        this.Destination = destStarSystem;
         this.TravelDistanceTotal = GetTravelDistanceTotal();
        this.TravelTimeTotal = GetTravelTimeTotal();
        //TODO: make fleet invisible
    }
    public void Travel() 
    {
        this.TravelTimeTotal--;
        if (this.TravelTimeTotal == 0) //fleet arrived
        {
            //TODO put fleet into ui of destination Star System
            this.CurrentLocation = this.Destination;   
        }
    }
}