using UnityEngine;

public class DrawRouteOnClick:MonoBehaviour
{
    private int clickIndex = 0;
    private Vector2[] clicks = new Vector2[2];

    private void Start()
    {
        // Subscribe to click event
        OnlineMapsControlBase.instance.OnMapClick += OnMapClick;
    }

    private void OnMapClick()
    {
        // Store coordinates of clicks (0 - start, 1 - finish)
        clicks[clickIndex] = OnlineMapsControlBase.instance.GetCoords();
        clickIndex++;

        // If count points == 2
        if (clickIndex == 2)
        {
            // Find a route and subscribe to complete event
            OnlineMapsGoogleDirections.Find(clicks[0], clicks[1]).OnComplete += OnGoogleDirectionsComplete;

            // Reset click index
            clickIndex = 0;
        }
    }

    private void OnGoogleDirectionsComplete(string response)
    {
        // Remove previous routes
        OnlineMaps.instance.RemoveAllDrawingElements();

        // Load result object from response string
        OnlineMapsGoogleDirectionsResult result = OnlineMapsGoogleDirections.GetResult(response);

        // If something wrong, then return
        if (result == null || result.routes.Length == 0) return;

        // Create a route line
        OnlineMapsDrawingLine route = new OnlineMapsDrawingLine(result.routes[0].overview_polylineD, Color.red, 3);

        // Add a line to the map
        OnlineMaps.instance.AddDrawingElement(route);
    }
}