using System;
using System.Collections.Generic;
using System.IO;
using System.Text;
using UnityEngine;
using UnityEngine.UI;

public class UIBubblePopupFromCVS : MonoBehaviour
{
    /// <summary>
    /// Root canvas
    /// </summary>
    public Canvas canvas;

    /// <summary>
    /// Bubble popup
    /// </summary>
    public GameObject bubble;

    /// <summary>
    /// Title text
    /// </summary>
    public Text title;

    /// <summary>
    /// Address text
    /// </summary>
    public Text address;

    /// <summary>
    /// Photo RawImage
    /// </summary>
    public RawImage photo;

    public List<CData> datas;

    /// <summary>
    /// Reference to active marker
    /// </summary>
    private OnlineMapsMarker targetMarker;

    /// <summary>
    /// This method is called when downloading photo texture.
    /// </summary>
    /// <param name="texture2D">Photo texture</param>
    private void OnDownloadPhotoComplete(OnlineMapsWWW www)
    {
        Texture2D texture = new Texture2D(1, 1);
        www.LoadImageIntoTexture(texture);

        // Set place texture to bubble popup
        photo.texture = texture;
    }

    /// <summary>
    /// This method is called by clicking on the map
    /// </summary>
    private void OnMapClick()
    {
        // Remove active marker reference
        targetMarker = null;

        // Hide the popup
        bubble.SetActive(false);
    }

    /// <summary>
    /// This method is called by clicking on the marker
    /// </summary>
    /// <param name="marker">The marker on which clicked</param>
    private void OnMarkerClick(OnlineMapsMarkerBase marker)
    {
        // Set active marker reference
        targetMarker = marker as OnlineMapsMarker;

        // Get a result item from instance of the marker
        CData data = marker["data"] as CData;
        if (data == null) return;

        // Show the popup
        bubble.SetActive(true);

        // Set title and address
        title.text = data.title;
        //address.text = data.address;

        // Destroy the previous photo
        if (photo.texture != null)
        {
            OnlineMapsUtils.Destroy(photo.texture);
            photo.texture = null;
        }

        OnlineMapsWWW www = new OnlineMapsWWW(data.photo_url);
        www.OnComplete += OnDownloadPhotoComplete;

        // Initial update position
        UpdateBubblePosition();
    }

    /// <summary>
    /// Start is called on the frame when a script is enabled just before any of the Update methods are called the first time.
    /// </summary>
    private void Start()
    {
        // Subscribe to events of the map 
        OnlineMaps.instance.OnChangePosition += UpdateBubblePosition;
        OnlineMaps.instance.OnChangeZoom += UpdateBubblePosition;
        OnlineMapsControlBase.instance.OnMapClick += OnMapClick;

        if (OnlineMapsControlBaseDynamicMesh.instance != null)
        {
            OnlineMapsControlBaseDynamicMesh.instance.OnMeshUpdated += UpdateBubblePosition;
        }

        if (OnlineMapsCameraOrbit.instance != null)
        {
            OnlineMapsCameraOrbit.instance.OnCameraControl += UpdateBubblePosition;
        }

        if (datas == null) datas = new List<CData>();

        ReadCVS();

        foreach (CData data in datas)
        {
            OnlineMapsMarker marker = OnlineMapsMarkerManager.CreateItem(data.longitude, data.latitude);
            marker["data"] = data;
            marker.OnClick += OnMarkerClick;
        }


        // Initial hide popup
        bubble.SetActive(false);
    }

    private void ReadCVS()
    {
        string filename = "e:/HolySites.csv";
        if (!File.Exists(filename)) return;

        string[] lines = File.ReadAllLines(filename, Encoding.UTF8);

        for (int i = 1; i < lines.Length; i++)
        {
            string[] parts = lines[i].Split(',');
            CData data = new CData
            {
                longitude = double.Parse(parts[4], OnlineMapsUtils.numberFormat),
                latitude = double.Parse(parts[3], OnlineMapsUtils.numberFormat),
                title = parts[0],
                status = parts[1],
                tradition = parts[2],
                photo_url = parts[5],
                webpage = parts[6],
                description = parts[7]
            };

            datas.Add(data);
        }
    }

    /// <summary>
    /// Updates the popup position
    /// </summary>
    private void UpdateBubblePosition()
    {
        // If no marker is selected then exit.
        if (targetMarker == null) return;

        // Hide the popup if the marker is outside the map view
        if (!targetMarker.inMapView)
        {
            if (bubble.activeSelf) bubble.SetActive(false);
        }
        else if (!bubble.activeSelf) bubble.SetActive(true);

        // Convert the coordinates of the marker to the screen position.
        Vector2 screenPosition = OnlineMapsControlBase.instance.GetScreenPosition(targetMarker.position);

        // Add marker height
        screenPosition.y += targetMarker.height;

        // Get a local position inside the canvas.
        Vector2 point;
        RectTransformUtility.ScreenPointToLocalPointInRectangle(canvas.transform as RectTransform, screenPosition, null, out point);

        // Set local position of the popup
        (bubble.transform as RectTransform).localPosition = point;
    }

    [Serializable]
    public class CData
    {
        public string title;
        public string status;
        public string tradition;
        public string address;
        public string photo_url;
        public string webpage;
        public string description;
        public double longitude;
        public double latitude;
    }
}

CData newData = new CData
{
    longitude = myLongitude,
    latitude = myLatitude,
    address = "My Address",
    // etc
};

datas.Add(newData); // If you want to create runtime objects, it’s more convenient to use List<CData> datas.