using Newtonsoft.Json;
using System.Collections.Generic;
using System.Net.Mail;
using UnityEngine;
using UnityEngine.UIElements;

/* 本文件控制Reset UI document 
 * 1. 显示和关闭Reset UI
 * 2. 显示和隐藏输入框
 * 3. 提交数据到服务器
 * 4. 显示错误信息
 */

public class ResetUIController : MonoBehaviour
{
    // Start is called once before the first execution of Update after the MonoBehaviour is created
    private Label message, errMsg;
    private TextField email, mobile, verification, password;
    private Button submit, cancel;
    private int condition = 0; // 0: 中文初始, 1: 其他语言初始, 2: 输入验证码和新的密码
    private Dictionary<string, string> errorMessageDict = new();
    private string errorText = string.Empty;      // 错误信息汇总
    void Start()
    {
        var root = GetComponent<UIDocument>().rootVisualElement;
        message = root.Q<Label>("message");
        email = root.Q<TextField>("email");
        mobile = root.Q<TextField>("mobile");
        verification = root.Q<TextField>("verification");
        password = root.Q<TextField>("password");
        submit = root.Q<Button>("submit");
        cancel = root.Q<Button>("cancel");
        errMsg = root.Q<Label>("error_msg");

        InitSetting();
    }

    // Update is called once per frame
    void Update()
    {
        FormatCheck();
        errMsg.text = errorText;
    }

    // 初始化语言和显示设定
    void InitSetting()
    {
        // 设置 shopping UI界面里面label和按键的语言显示
        string textValue = GameTool.GetValueAtPath(EnviromentSetting.languageData, new string[] { "resetUI", "button", "submit", EnviromentSetting.languageCode });
        submit.text = textValue;
        textValue = GameTool.GetValueAtPath(EnviromentSetting.languageData, new string[] { "resetUI", "button", "cancel", EnviromentSetting.languageCode });
        cancel.text = textValue;
        textValue = GameTool.GetValueAtPath(EnviromentSetting.languageData, new string[] { "resetUI", "text_field", "mobile", EnviromentSetting.languageCode });
        mobile.label = textValue;
        textValue = GameTool.GetValueAtPath(EnviromentSetting.languageData, new string[] { "resetUI", "text_field", "email", EnviromentSetting.languageCode });
        email.label = textValue;
        textValue = GameTool.GetValueAtPath(EnviromentSetting.languageData, new string[] { "resetUI", "text_field", "verification", EnviromentSetting.languageCode });
        verification.label = textValue;
        textValue = GameTool.GetValueAtPath(EnviromentSetting.languageData, new string[] { "resetUI", "text_field", "password", EnviromentSetting.languageCode });
        password.label = textValue;

        textValue = GameTool.GetValueAtPath(EnviromentSetting.languageData, new string[] { "resetUI", "error_msg", "password_too_short", EnviromentSetting.languageCode });
        errorMessageDict.Add("password_too_short", textValue);
        textValue = GameTool.GetValueAtPath(EnviromentSetting.languageData, new string[] { "resetUI", "error_msg", "cannot_find_account", EnviromentSetting.languageCode });
        errorMessageDict.Add("cannot_find_account", textValue);
        textValue = GameTool.GetValueAtPath(EnviromentSetting.languageData, new string[] { "resetUI", "error_msg", "wrong_verification_code", EnviromentSetting.languageCode });
        errorMessageDict.Add("wrong_verification_code", textValue);
        textValue = GameTool.GetValueAtPath(EnviromentSetting.languageData, new string[] { "resetUI", "error_msg", "email_format_wrong", EnviromentSetting.languageCode });
        errorMessageDict.Add("email_format_wrong", textValue);

        cancel.clicked += CancelClick;
        submit.clicked += SubmitClick;

        if (EnviromentSetting.languageCode == "zh-cn")
        {
            condition = 0;
        }
        else
        {
            condition = 1;
        }
        ConditionSetting(condition);
    }

    // 根据condition的值来显示不同的UI
    void ConditionSetting(int conditionValue)
    {
        switch (conditionValue)
        {
            case 0:
                string textValue = GameTool.GetValueAtPath(EnviromentSetting.languageData, new string[] { "resetUI", "label", "message 0", EnviromentSetting.languageCode });
                message.text = textValue;
                email.style.display = DisplayStyle.None;
                mobile.style.display = DisplayStyle.Flex;
                verification.style.display = DisplayStyle.None;
                password.style.display = DisplayStyle.None;
                submit.SetEnabled(false);
                break;
            case 1:
                textValue = GameTool.GetValueAtPath(EnviromentSetting.languageData, new string[] { "resetUI", "label", "message 1", EnviromentSetting.languageCode });
                message.text = textValue;
                email.style.display = DisplayStyle.Flex;
                mobile.style.display = DisplayStyle.None;
                verification.style.display = DisplayStyle.None;
                password.style.display = DisplayStyle.None;
                submit.SetEnabled(false);
                break;
            case 2:
                textValue = GameTool.GetValueAtPath(EnviromentSetting.languageData, new string[] { "resetUI", "label", "message 2", EnviromentSetting.languageCode });
                message.text = textValue;
                email.SetEnabled(false);
                mobile.SetEnabled(false);
                verification.style.display = DisplayStyle.Flex;
                password.style.display = DisplayStyle.Flex;
                submit.SetEnabled(false);
                break;
            //case 3:
            //    textValue = GameTool.GetValueAtPath(EnviromentSetting.languageData, new string[] { "resetUI", "label", "message 3", EnviromentSetting.languageCode });
            //    message.text = textValue;
            //    email.SetEnabled(false);
            //    mobile.SetEnabled(false);
            //    verification.style.display = DisplayStyle.Flex;
            //    password.style.display = DisplayStyle.None;
            //    submit.SetEnabled(false);
            //    break;
            //case 4:
            //    textValue = GameTool.GetValueAtPath(EnviromentSetting.languageData, new string[] { "resetUI", "label", "message 4", EnviromentSetting.languageCode });
            //    message.text = textValue;
            //    email.SetEnabled(false);
            //    mobile.SetEnabled(false);
            //    verification.style.display = DisplayStyle.None;
            //    password.style.display = DisplayStyle.Flex;
            //    submit.SetEnabled(false);
            //    break;
        }
    }

    void SubmitClick()
    {
        if (condition <= 1)
        {
            // 申请验证码阶段
            RequestVerificationCodePost();
        }
        else if (condition ==2)
        {
            // 输入验证码阶段和输入新密码阶段
            NewPassowrdRequest();

        }
    }
    void RequestVerificationCodePost()
    {

        // 申请验证码
        // POST数据到服务器
        string url = "/api/reset/password/step1/";
        Dictionary<string, string> formData = new();
        WWWForm form = new();
        form.AddField("UUID", EnviromentSetting.UUID);
        if (EnviromentSetting.languageCode == "zh-cn")
        {
            form.AddField("mobile", mobile.text);
        }
        else
        {
            form.AddField("email", email.text);
        }
        form.AddField("UUID", EnviromentSetting.UUID);
        form.AddField("language_code", EnviromentSetting.languageCode);
        StartCoroutine(WebController.PostRequest(url, form, callback: RequestVerificationCodeCallback));
        errorText = string.Empty;
    }

    void RequestVerificationCodeCallback(string json)
    {
        var data = JsonConvert.DeserializeObject<Dictionary<string, string>>(json);
        if (data != null && data["status"] == "success")
        {
            if (data["message"] == "verification sent")
            {
                // 发送验证码成功
                condition = 2;
                ConditionSetting(condition);
            }
        }
        else if (data != null && data["status"] == "error")
        {
            // 找不到对应的账户
            if (data["message"] == "cannot find account")
            {
                errorText += errorMessageDict["cannot_find_account"];
            }

        }
    }

    void NewPassowrdRequest()
    {
        // 检查验证码
        string url = "/api/reset/password/step2/";
        Dictionary<string, string> formData = new();
        WWWForm form = new();
        form.AddField("UUID", EnviromentSetting.UUID);
        if (EnviromentSetting.languageCode == "zh-cn")
        {
            form.AddField("mobile", mobile.text);
        }
        else
        {
            form.AddField("email", email.text);
        }
        form.AddField("UUID", EnviromentSetting.UUID);
        form.AddField("language_code", EnviromentSetting.languageCode);
        form.AddField("verification_code", verification.text);
        form.AddField("password", password.text);
        StartCoroutine(WebController.PostRequest(url, form, callback: NewPasswordCallback));
        errorText = string.Empty;
    }

    void NewPasswordCallback(string json)
    {
        var data = JsonConvert.DeserializeObject<Dictionary<string, string>>(json);
        if (data != null && data["status"] == "success")
        {
            string msg = GameTool.GetValueAtPath(EnviromentSetting.languageData, new string[] { "resetUI", "label", "new_password_success", EnviromentSetting.languageCode });
            MessageBoxController.ShowMessage(msg, () => MaskTransitions.TransitionManager.Instance.LoadLevel("Home"));
        }
        else if (data != null && data["status"] == "error")
        {
            // 验证码错误
            if (data["message"] == "wrong verification code")
            {
                errorText += errorMessageDict["wrong_verification_code"];
            }
        }
    }

    void CancelClick()
    {
        var uiPlaceholder = GameObject.Find("Canvas Placeholder");
        if (uiPlaceholder != null)
        {
            var resetUI = uiPlaceholder.transform.Find("Reset Pasword").gameObject;
            var loginCanvas = uiPlaceholder.transform.Find("Login Canvas").gameObject;
            resetUI.SetActive(false);
            loginCanvas.SetActive(true);
        }
    }

    // 检查输入的内容是否为空，输入不为空的时候Submit按钮可用

    void FormatCheck()
    {
        switch (condition)
        {
            case 0:
                {
                    if (mobile.value != "")
                    {
                        submit.SetEnabled(true);
                    }
                    else
                    {
                        submit.SetEnabled(false);
                    }
                    break;
                }
            case 1:
                {
                    if (email.value != "" && IsValidEmail(email.text))
                    {
                        submit.SetEnabled(true);
                    }
                    else
                    {
                        submit.SetEnabled(false);
                    }
                    break;
                }
            case 2:
                {
                    if (verification.value != "" && password.text.Length>=8)
                    {
                        submit.SetEnabled(true);
                    }
                    else
                    {
                        submit.SetEnabled(false);
                    }
                    break;
                }
        }
    }

    #region 格式验证区
    // email 格式检测
    private bool IsValidEmail(string email)
    {
        try
        {
            var addr = new MailAddress(email);
            return addr.Address == email;
        }
        catch
        {
            return false;
        }
    }
    #endregion
}