using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;
using UnityEngine.UI;
using UnityEngine.Networking;
using System.Text.RegularExpressions;
using System.Data.SqlClient;
using TMPro;
using System;
using System.IO;
using ZXing;
using ZXing.QrCode;
using System.Net;
using SimpleJSON;
using System.ComponentModel;
using System.Runtime.InteropServices;


public class 電子簽章 : MonoBehaviour
{
    public RawImage rawImage1;
    public RawImage rawImage;
    public Texture2D canvasTexture;
    public Color drawColor = Color.black;
    public float brushSize = 10f;

    private bool isDrawing = false;
    private Vector2 lastPos;

    [SerializeField] GameObject 條跳面板;

    [SerializeField] GameObject 寫面板;
    [SerializeField] GameObject 看面板;

    public CanvasScaler canvasScaler;
    float screenWidth;
    float screenHeight;

    public GameObject buttonPrefab;
    public Transform buttonParent;
    public GameObject buttonceneter;
    private List<GameObject> copy = new List<GameObject>();
    void Start()
    {
        Screen.autorotateToPortrait = false;
        Screen.orientation = ScreenOrientation.LandscapeLeft;
        float rate = 900.0f / 1900.0f;
        if (canvasScaler == null)
        {
            canvasScaler = GetComponent<CanvasScaler>();
        }

        if (Main.Global.rate<rate)
        {
            canvasScaler.matchWidthOrHeight = 1f;
        }
        else
        {
            canvasScaler.matchWidthOrHeight = 0f;
        }

        ddd();
    }
   
    void ddd()
    {
        canvasTexture = new Texture2D((int)rawImage.rectTransform.rect.width, (int)rawImage.rectTransform.rect.height);

        Color[] fillColorArray = canvasTexture.GetPixels();

        for (int i = 0; i < fillColorArray.Length; ++i)
        {
            fillColorArray[i] = Color.white;
        }

        canvasTexture.SetPixels(fillColorArray);
        canvasTexture.Apply();
        rawImage.texture = canvasTexture;
    }
    void Update()
    {
        if (Input.GetMouseButtonDown(0))
        {
            isDrawing = true;
            lastPos = GetMousePosition();
        }
        else if (Input.GetMouseButtonUp(0))
        {
            isDrawing = false;
        }

        if (isDrawing)
        {
            Vector2 currentPos = GetMousePosition();
            DrawLine(lastPos, currentPos);
            lastPos = currentPos;
        }
    }

    void DrawLine(Vector2 from, Vector2 to)
    {
        Vector2 diff = to - from;
        float distance = diff.magnitude;
        int steps = Mathf.RoundToInt(distance);
        for (int i = 0; i < steps; i++)
        {
            float t = i / distance;
            Vector2 point = Vector2.Lerp(from, to, t);
            DrawPoint((int)point.x, (int)point.y);
        }
        canvasTexture.Apply();
    }

    void DrawPoint(int x, int y)
    {
        for (int i = -Mathf.RoundToInt(brushSize / 2); i < Mathf.RoundToInt(brushSize / 2); i++)
        {
            for (int j = -Mathf.RoundToInt(brushSize / 2); j < Mathf.RoundToInt(brushSize / 2); j++)
            {
                if (x + i >= 0 && x + i < canvasTexture.width && y + j >= 0 && y + j < canvasTexture.height)
                {
                    canvasTexture.SetPixel(x + i, y + j, drawColor);
                }
            }
        }
    }

    Vector2 GetMousePosition()
    {
        Vector2 localMousePos;
        RectTransformUtility.ScreenPointToLocalPointInRectangle(rawImage.rectTransform, Input.mousePosition, null, out localMousePos);
        return localMousePos + rawImage.rectTransform.rect.size / 2;
    }

    public void SaveImage()
    {
        條跳面板.SetActive(true);
        byte[] bytes = canvasTexture.EncodeToPNG();
        System.IO.File.WriteAllBytes(Application.persistentDataPath + "/drawnImage.png", bytes);
        string asd =System.Convert.ToBase64String(bytes);
        StartCoroutine(電簽流水查詢(asd));
    }
    IEnumerator 電簽流水查詢(string asd)
    {
        //Main.Global.阿帕契路徑="http://106.1.48.106:8080/wp-content/themes/event-star/shto_main.php?";
        //Main.Global.預設伺服器路徑="test";
        string strcon = "電簽流水查詢";
        string se = Main.Global.預設伺服器路徑;
        string strUrl = string.Format(Main.Global.阿帕契路徑+"comm={0}&se={1}", strcon, se);
        UnityWebRequest request = UnityWebRequest.Get(strUrl);
        yield return request.SendWebRequest();
        if (request.result == UnityWebRequest.Result.ConnectionError)
        {
            Debug.Log(request.error);
            yield break;
        }
        string num = request.downloadHandler.text.ToString();
        Debug.Log(num);
        string 流水號 = "PC";

        if (num == "n")
        {
            流水號 ="PC00000001";
        }
        else 
        {
            string cnum = num.Substring(2);
            int inum = int.Parse(cnum);
            inum+=1;
            if (inum<10)
            {
                流水號+="0000000"+inum.ToString();
            }
            if (inum>9 && inum<100)
            {
                流水號+="000000"+inum.ToString();
            }
            if (inum>99 && inum<1000)
            {
                流水號+="00000"+inum.ToString();
            }
            if (inum>999 && inum<10000)
            {
                流水號+="0000"+inum.ToString();
            }
            if (inum>9999 && inum<100000)
            {
                流水號+="000"+inum.ToString();
            }
            if (inum>99999 && inum<10000000)
            {
                流水號+="00"+inum.ToString();
            }
            if (inum>999999 && inum<10000000)
            {
                流水號+="0"+inum.ToString();
            }
            if (inum>9999999 && inum<100000000)
            {
                流水號+=inum.ToString();
            }
        }
        Debug.Log(流水號);
        StartCoroutine(電簽上傳(asd,流水號));
    }
    IEnumerator 電簽上傳(string pa1,string pa2)
    {
        string 阿帕契路徑1 = "";
        if (Main.Global.阿帕契路徑=="http://106.1.48.106:8080/wp-content/themes/event-star/shto_main.php?")
        {
            阿帕契路徑1="http://106.1.48.106:8080/wp-content/themes/event-star/shto_update.php?";
        }
        else
        {
            阿帕契路徑1="http://210.61.41.234/ShTo/wp-content/themes/event-star/shto_update.php?";
        }
        //Main.Global.阿帕契路徑="http://106.1.48.106:8080/wp-content/themes/event-star/shto_update.php?";
        //Main.Global.預設伺服器路徑="test";
        string se = Main.Global.預設伺服器路徑;
        string pa = "王詩文";

        WWWForm form = new WWWForm();
        form.AddField("se", se);
        form.AddField("PA", pa);
        form.AddField("PA1", pa1);
        form.AddField("PA2", pa2);

        using (UnityWebRequest request = UnityWebRequest.Post(阿帕契路徑1, form))
        {
            yield return request.SendWebRequest();

            if (request.result == UnityWebRequest.Result.ConnectionError)
            {
                Debug.Log(request.error);
            }
            else
            {
                Debug.Log("Image uploaded successfully");
            }
        }
    }
    IEnumerator 電簽清單()
    {
        //Main.Global.阿帕契路徑="http://106.1.48.106:8080/wp-content/themes/event-star/shto_main.php?";
        //Main.Global.預設伺服器路徑="test";
        string strcon = "電簽清單";
        string se = Main.Global.預設伺服器路徑;
        string strUrl = string.Format(Main.Global.阿帕契路徑+"comm={0}&se={1}", strcon, se);
        Debug.Log(strUrl);
        UnityWebRequest request = UnityWebRequest.Get(strUrl);
        yield return request.SendWebRequest();
        if (request.result == UnityWebRequest.Result.ConnectionError)
        {
            Debug.Log(request.error);
            yield break;
        }
        JSONNode json = JSON.Parse(request.downloadHandler.text);
        Debug.Log(json);
        int sum = 0;
        for (int i = 0; i < json.Count; i++)
        {
            GameObject buttonObj = Instantiate(buttonPrefab) as GameObject;
            buttonObj.GetComponent<RectTransform>().anchoredPosition = new Vector2(3, -sum);
            buttonObj.transform.SetParent(buttonParent, false);
            string idname = json[i][0].ToString().Trim('"');
            TextMeshProUGUI text = buttonObj.GetComponentInChildren<TextMeshProUGUI>();
            text.text = idname;
            Button newButton = buttonObj.GetComponentInChildren<Button>();
            int index = i;
            newButton.onClick.AddListener(() =>
            {
                string pa1 = json[index][2].ToString().Trim('"');
                byte[] bytes = System.Convert.FromBase64String(pa1);
                Texture2D texture = new Texture2D(2, 2);
                texture.LoadImage(bytes);
                rawImage1.texture = texture;

            });
            sum+=50;
            copy.Add(buttonObj);
        }
        buttonceneter.GetComponent<RectTransform>().sizeDelta = new Vector2(buttonceneter.GetComponent<RectTransform>().sizeDelta.x, sum);



    }
    public void 看()
    {
        StartCoroutine(電簽清單());
        rawImage1.texture = Texture2D.blackTexture;
        寫面板.SetActive(false);
        看面板.SetActive(true);
    }
    public void 寫()
    {

        寫面板.SetActive(true);
        看面板.SetActive(false);
        if (copy != null)
        {
            DeletetextCopy();
        }
        ClearCanvas();
    }
    public void DeletetextCopy()
    {
        // 刪除複製出來的物件
        foreach (GameObject i in copy)
        {
            Destroy(i);
        }
        copy.Clear();
    }
    public void 彈關()
    {
        條跳面板.SetActive(false);
        ClearCanvas();
    }
    public void back()
    {
        change_Secen(1);
    }
    public void ClearCanvas()
    {
        Color[] clearColorArray = new Color[canvasTexture.width * canvasTexture.height];
        for (int i = 0; i < clearColorArray.Length; i++)
        {
            clearColorArray[i] = Color.clear;
        }
        canvasTexture.SetPixels(clearColorArray);
        canvasTexture.Apply();
        ddd();
    }
    public void change_Secen(int _screenNum)
    {

        SceneManager.LoadScene(_screenNum);
    }
}