using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.EventSystems;
using XCharts.Runtime;

public enum LineDir
{
    Out,
    In
};

public enum ZYTime
{
    Before,
    After,
};


public class LinePath : MonoBehaviour
{
    public LineDir lineDir;
    public string startPos;
    public string endPos;
    public string linePathContent;

    public int manNum;
    public int homeNum;
    public int completeNum;
    public string dateTime;

    public LineRenderer line;
    private List<Vector3> points = new List<Vector3>();
    // Use this for initialization
    public void Start()
    {
        line = this.GetComponent<LineRenderer>();

        points.Clear();
        // line = lines;
        GameObject caret = null;
        caret = new GameObject("Lines");
        Vector3 left, right; // A position to the left of the current line
                             // For all but the last point
        for (var i = 0; i < line.positionCount - 1; i++)
        {
            caret.transform.position = line.GetPosition(i);
            caret.transform.LookAt(line.GetPosition(i + 1));
            right = caret.transform.position + transform.right * line.startWidth / 2;
            left = caret.transform.position - transform.right * line.startWidth / 2;
            points.Add(left);
            points.Add(right);
        }
        // Last point looks backwards and reverses
        caret.transform.position = line.GetPosition(line.positionCount - 1);
        caret.transform.LookAt(line.GetPosition(line.positionCount - 2));
        right = caret.transform.position + transform.right * line.startWidth / 2;
        left = caret.transform.position - transform.right * line.startWidth / 2;
        points.Add(left);
        points.Add(right);
        Destroy(caret);
        DrawMesh();
    }


    private void DrawMesh()
    {
        Vector3[] verticies = new Vector3[points.Count];
        for (int i = 0; i < verticies.Length; i++)
        {
            verticies[i] = points[i];
        }
        int[] triangles = new int[((points.Count / 2) - 1) * 6];
        //Works on linear patterns tn = bn+c
        int position = 6;
        for (int i = 0; i < (triangles.Length / 6); i++)
        {
            triangles[i * position] = 2 * i;
            triangles[i * position + 3] = 2 * i;
            triangles[i * position + 1] = 2 * i + 3;
            triangles[i * position + 4] = (2 * i + 3) - 1;
            triangles[i * position + 2] = 2 * i + 1;
            triangles[i * position + 5] = (2 * i + 1) + 2;
        }
        Mesh mesh = GetComponent<MeshFilter>().mesh;
        mesh.Clear();
        mesh.vertices = verticies;
        mesh.triangles = triangles;
        mesh.RecalculateNormals();
    }


    public void OnShow()
    {
        if (RKZYLayer.lineInfoStatic)
        {
            RKZYLayer.lineInfoStatic.SetData(this);
            RKZYLayer.lineInfoStatic.GetComponent<RectTransform>().anchoredPosition = this.GetComponent<RectTransform>().anchoredPosition;
            RKZYLayer.lineInfoStatic.linePaths.Add(this);
        }
    }
}