using Cysharp.Threading.Tasks;
using Framework;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using TMPro;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.Networking;

[RequireComponent(typeof(TMP_Text))]
public class LinkText : MonoBehaviour, IPointerClickHandler
{
    public void OnPointerClick(PointerEventData eventData)
    {
        TMP_Text pTextMeshPro = GetComponent<TMP_Text>();

        int linkIndex =
        TMP_TextUtilities.FindIntersectingLink(pTextMeshPro, eventData.position, eventData.pressEventCamera);
        // If you are not in a Canvas using Screen Overlay, put your camera instead of null

        if (linkIndex != -1)
        {
            TMP_LinkInfo linkInfo = pTextMeshPro.textInfo.linkInfo[linkIndex];
            DebugUtil.Log("OnPointerClick called.");
            DebugUtil.Log("Link ID: \"" + linkInfo.GetLinkID() + "\"   Link Text: \"" + linkInfo.GetLinkText());
            //Application.OpenURL(linkInfo.GetLinkID());

            Action(linkInfo.GetLinkID());
        }
    }

    void Action(string linkID)
    {
        DebugUtil.Log("Action called.");
        DebugUtil.Log("Link ID: " + linkID);

        if(linkID == "api_01")
        {           
            var headData = PostHeader.PostHeaderInfo(new Dictionary<string, string>
                {
                    {"timestamp",  DateTimeOffset.UtcNow.ToUnixTimeSeconds().ToString() }
                });

            UnityWebRequest www = new UnityWebRequest("http://192.168.3.90:19999/api/v1/agreements", UnityWebRequest.kHttpVerbPOST)
            {
                downloadHandler = new DownloadHandlerBuffer(),
            };

            www.SetRequestHeader("signature", headData["signature"]);
            www.SetRequestHeader("timestamp", headData["timestamp"]);

            try
            {
                //await www.SendWebRequest();
                if (www.result != UnityWebRequest.Result.Success)
                {
                    DebugUtil.LogError(www.downloadHandler.text);
                }
                else
                {
                    DebugUtil.Log("http消息请求成功！\n返回内容：" + www.downloadHandler.text);
                    //WebRequestResult result = JsonConvert.DeserializeObject<WebRequestResult>(www.downloadHandler.text);
                    //if (result.code == 0)
                    //{
                    //    //send success msg
                    //    DebugUtil.Log("短信验证码请求成功");
                    //}
                    //else
                    //{
                    //    //send fail msg
                    //    EventManager.Instance.Send(EventManager.EventName.PhoneCodeRequsetFail, "请求失败！" + result.message);
                    //    DebugUtil.LogError("请求失败！" + result.message);
                    //}
                    //callback?.Invoke(result.code, result.message);
                }
            }
            catch (UnityWebRequestException e)
            {
                DebugUtil.LogError(e);
                EventManager.Instance.Send(EventManager.EventName.PhoneCodeRequsetFail, "请求失败！");
                //callback?.Invoke(-1, e.Message);
            }
        }
        else if(linkID == "api_02")
        {
            var headData = PostHeader.PostHeaderInfo(new Dictionary<string, string>
                {
                    {"timestamp",  DateTimeOffset.UtcNow.ToUnixTimeSeconds().ToString() }
                });

            //post data
            //var jsonData = JsonUtility.ToJson(sendData);
            //byte[] bytes = Encoding.UTF8.GetBytes(jsonData);

            UnityWebRequest www = new UnityWebRequest("http://192.168.3.90:19999/api/v1/agreements", UnityWebRequest.kHttpVerbPOST)
            {
                //uploadHandler = new UploadHandlerRaw(bytes),
                downloadHandler = new DownloadHandlerBuffer(),
            };
            //www.SetRequestHeader("Content-Type", "application/json;charset=utf-8");//为了保证客户端发送的json格式在后端能解析
            www.SetRequestHeader("signature", headData["signature"]);
            www.SetRequestHeader("timestamp", headData["timestamp"]);

            try
            {
                //await www.SendWebRequest();
                if (www.result != UnityWebRequest.Result.Success)
                {
                    DebugUtil.LogError(www.downloadHandler);
                    //DebugUtil.LogError(www.downloadHandler.text);
                }
                else
                {
                    DebugUtil.Log("http消息请求成功！\n返回内容：" + www.downloadHandler.text);
                    //WebRequestResult result = JsonConvert.DeserializeObject<WebRequestResult>(www.downloadHandler.text);
                    //if (result.code == 0)
                    //{
                    //    //send success msg
                    //    DebugUtil.Log("短信验证码请求成功");
                    //}
                    //else
                    //{
                    //    //send fail msg
                    //    EventManager.Instance.Send(EventManager.EventName.PhoneCodeRequsetFail, "请求失败！" + result.message);
                    //    DebugUtil.LogError("请求失败！" + result.message);
                    //}
                    //callback?.Invoke(result.code, result.message);
                }
            }
            catch (UnityWebRequestException e)
            {
                DebugUtil.LogError(e);
                EventManager.Instance.Send(EventManager.EventName.PhoneCodeRequsetFail, "请求失败！");
                //callback?.Invoke(-1, e.Message);
            }
        }
        else
        {
            DebugUtil.Log("Unknown link clicked.");
        }
    }
}

/// <summary>
/// 头部加密
/// </summary>
public class PostHeader
{
    /// <summary>
    /// 加密拼接密钥
    /// </summary>
    static string key = "OfqCL-_jJa9Sm1Nl-TPXvm3drI9td1RPoWn3eLjTe18=";

    /// <summary>
    /// 头部加密信息
    /// </summary>
    /// <param name="param"></param>
    /// <returns></returns>
    public static Dictionary<string, string> PostHeaderInfo(Dictionary<string, string> param)
    {
        DateTimeOffset now = DateTimeOffset.UtcNow;
        string timeStamp = now.ToUnixTimeSeconds().ToString();

        var encodeData = new EncodeData(param);
        string encodeStr = encodeData.GetEncodeData();
        var md5 = EncodeData.GetMd5Hash(encodeStr);
        string linkStr = md5 + key;
        string sign = EncodeData.GetSha256Hash(linkStr);

        Dictionary<string, string> header = new();
        header["signature"] = sign;
        header["timestamp"] = timeStamp;

        return header;
    }

    public class EncodeData
    {
        Dictionary<string, string> data = new Dictionary<string, string>();

        public EncodeData(Dictionary<string, string> data)
        {
            this.data = data;
        }

        public string GetEncodeData()
        {
            List<string> key = data.Keys.Where(k => k != "signature").ToList();
            key.Sort();
            List<string> keyValuePairs = key.Select(k => k + "=" + data[k]).ToList();
            string concatenate = string.Join("&", keyValuePairs);

            //DebugUtil.Log("排序结果：" + concatenate);
            return concatenate;
        }
        public static string GetMd5Hash(string input)
        {
            using (MD5 md5 = MD5.Create())
            {
                byte[] inputBytes = Encoding.UTF8.GetBytes(input);
                byte[] hashBytes = md5.ComputeHash(inputBytes);

                StringBuilder sb = new StringBuilder();
                for (int i = 0; i < hashBytes.Length; i++)
                {
                    sb.Append(hashBytes[i].ToString("x2"));
                }
                return sb.ToString();
            }
        }
        public static string GetSha256Hash(string input)
        {
            using (SHA256 sha256 = SHA256.Create())
            {
                byte[] inputBytes = Encoding.UTF8.GetBytes(input);
                byte[] hashBytes = sha256.ComputeHash(inputBytes);

                StringBuilder sb = new StringBuilder();
                for (int i = 0; i < hashBytes.Length; i++)
                {
                    sb.Append(hashBytes[i].ToString("x2"));
                }
                return sb.ToString();
            }
        }
    }
}