using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.SceneManagement;
using System.Text.RegularExpressions;
using DG.Tweening;

public class LoginMgr : MonoBehaviour
{
    [SerializeField] GameObject loginView;
    [SerializeField] GameObject registerView;
    [SerializeField] GameObject forgetPWD_View;
    [SerializeField] GameObject loginMode1;
    [SerializeField] GameObject loginMode2;
    [SerializeField] Sprite[] loginModeSprites;
    [SerializeField] GameObject loginInUser;
    [SerializeField] GameObject loginInPWD;
    [SerializeField] GameObject loginInPhone;
    [SerializeField] GameObject loginInCode;
    [SerializeField] GameObject loginValidTime;
    [SerializeField] GameObject registerInUser;
    [SerializeField] GameObject registerInPWD1;
    [SerializeField] GameObject registerInPWD2;
    [SerializeField] GameObject registerInNickname;
    [SerializeField] GameObject registerInGender;
    [SerializeField] Text loginTip;
    [SerializeField] Text registerTip;

    public static UserInfo myUserInfo = new UserInfo();

    int loginMode = 1;

    void Start()
    {
        SelectLoginMode(1);
        GameObject[] inputNodes = {loginInUser, loginInPWD, registerInUser, registerInPWD1, registerInPWD2};
        foreach (var inputNode in inputNodes)
        {
            InputField inputField = GetInputField(inputNode);
            inputField.onValueChanged.AddListener(delegate(string text) {
                Match match = new Regex("[^A-Za-z0-9]").Match(text);
                if (match.Success) {
                    inputField.text = text.Replace(match.Value, "");
                }
            });       
        }

        GetInputField(loginInUser).text = PlayerPrefs.GetString("LoginRecord_User", "");
        GetInputField(loginInPWD).text = PlayerPrefs.GetString("LoginRecord_PWD", "");
    }

    InputField GetInputField(GameObject inputNode)
    {
        return inputNode.transform.Find("InputField").GetComponent<InputField>();
    }

    public void SelectLoginMode(int mode) {
        loginMode = mode;
        if (loginMode == 1)
        {
            loginMode1.GetComponent<Image>().sprite = loginModeSprites[0];
            loginMode2.GetComponent<Image>().sprite = loginModeSprites[3];
            loginInUser.SetActive(true);
            loginInPWD.SetActive(true);
            loginInPhone.SetActive(false);
            loginInCode.SetActive(false);
            loginValidTime.SetActive(false);
        }
        else if (loginMode == 2)
        {
            loginMode1.GetComponent<Image>().sprite = loginModeSprites[1];
            loginMode2.GetComponent<Image>().sprite = loginModeSprites[2];
            loginInUser.SetActive(false);
            loginInPWD.SetActive(false);
            loginInPhone.SetActive(true);
            loginInCode.SetActive(true);
            loginValidTime.SetActive(true);
        }
        loginTip.text = "";
    }

    public void showRegisterView() {
        loginView.SetActive(false);
        registerView.SetActive(true);
        forgetPWD_View.SetActive(false);
        registerTip.text = "";
    }

    public void showLoginView() {
        loginView.SetActive(true);
        registerView.SetActive(false);
        forgetPWD_View.SetActive(false);
        loginTip.text = "";
    }

    public void showForgetPWD_View() {
        loginView.SetActive(false);
        registerView.SetActive(false);
        forgetPWD_View.SetActive(true);
    }

    public void login() {
        InputField user = GetInputField(loginInUser);
        if (user.text.Trim().Length == 0) {
            loginTip.color = Color.yellow;
            loginTip.text = "请输入用户名";
            return;
        }
        InputField pwd = GetInputField(loginInPWD);
        if (pwd.text.Trim().Length == 0) {
            loginTip.color = Color.yellow;
            loginTip.text = "请输入密码";
            return;
        }
        UserInfos userInfos = GetUserInfos();
        foreach (var userInfo in userInfos.list)
        {
            if (userInfo.user == user.text) {
                if (userInfo.pwd == pwd.text) {
                    loginTip.color = Color.green;
                    loginTip.text = "登录成功";
                    myUserInfo = userInfo;
                    PlayerPrefs.SetString("LoginRecord_User", userInfo.user);
                    PlayerPrefs.SetString("LoginRecord_PWD", userInfo.pwd);
                    SceneManager.LoadScene("Home", LoadSceneMode.Single);               
                } else {
                    loginTip.color = Color.red;
                    loginTip.text = "密码错误";
                }
                return;
            }
        }
        loginTip.color = Color.yellow;
        loginTip.text = "该用户尚未注册";
    }

    public void Register()
    {
        InputField user = GetInputField(registerInUser);
        if (user.text.Length < 6) {
            registerTip.color = Color.red;
            registerTip.text = "用户名长度至少6位";
            return;
        }
        InputField pwd1 = GetInputField(registerInPWD1);
        if (pwd1.text.Length < 6) {
            registerTip.color = Color.red;
            registerTip.text = "密码长度至少6位";
            return;
        }
        InputField pwd2 = GetInputField(registerInPWD2);
        if (pwd1.text != pwd2.text) {
            registerTip.color = Color.red;
            registerTip.text = "两次输入的密码不一致";
            return;
        }
        InputField nickname = GetInputField(registerInNickname);
        if (nickname.text.Trim().Length == 0) {
            registerTip.color = Color.yellow;
            registerTip.text = "请输入游戏昵称";
            return;
        }
        UserInfos userInfos = GetUserInfos();
        foreach (var userInfo in userInfos.list)
        {
            if (userInfo.user == user.text) {
                registerTip.color = Color.yellow;
                registerTip.text = "该用户无法重复注册";
                return;
            }
        }
        UserInfo userInfo1 = new UserInfo();
        userInfo1.user = user.text;
        userInfo1.pwd = pwd1.text;
        userInfo1.nickname = nickname.text;
        Transform toggleGroup = registerInGender.transform.Find("ToggleGroup");
        for (int i = 0; i < toggleGroup.childCount; i++) {
            if (toggleGroup.GetChild(i).GetComponent<Toggle>().isOn) {
                userInfo1.gender = i == 0 ? "男" : "女";
                break;
            }
        }
        userInfos.list.Add(userInfo1);
        SetUserInfos(userInfos);
        registerTip.color = Color.green;
        registerTip.text = "注册成功";
        //自动跳转到登录并填写登录信息
        GetInputField(loginInUser).text = userInfo1.user;
        GetInputField(loginInPWD).text = userInfo1.pwd;
        SelectLoginMode(1);
        Invoke("showLoginView", 0.5f);
    }

    public static UserInfos GetUserInfos() {
        string userInfosStr = PlayerPrefs.GetString("UserInfos", "");
        return userInfosStr.Length == 0 ?  new UserInfos(): JsonUtility.FromJson<UserInfos>(userInfosStr);
    }

    public static void SetUserInfos(UserInfos userInfos) {
        PlayerPrefs.SetString("UserInfos", JsonUtility.ToJson(userInfos));
    }

    public static void SaveUserInfo(UserInfo userInfo) {
        UserInfos userInfos = GetUserInfos();
        for(int i = 0; i < userInfos.list.Count; i++) {
            UserInfo u = userInfos.list[i];
            if (u.user == userInfo.user) {
                userInfos.list[i] = userInfo;
            }
        }
        SetUserInfos(userInfos);
        myUserInfo = userInfo;
    }
}

public class UserInfos {
    public List<UserInfo> list = new List<UserInfo>();
}

[Serializable]
public class UserInfo {
    public string user = "";
    public string pwd = "";
    public string nickname = "";
    public string phone = "";
    public string gender = "";
    public string birthday = "";
    public string national = "";
    public string region = "";
}