using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Net;
using System.Web.Security;
using SimpleWorld.DataAccessLayer;
using System.Collections;

namespace SimpleWorld.Web.Bookings {

    public static class LoginProvider {

        #region Private Fields

        private const string CYPHER = "Simple Salon is the greatest";

        public const string ERROR_LoginError = "Please try again later. An error has occurred.";
        public const string ERROR_WrongIDorPassword = "Incorrect User ID or Password.<br>Please try again...";

        #endregion


        #region Public Properties

        public static OnlineClient CurrentUser {
            get {
                return HttpContext.Current.Session["user"] as OnlineClient;
            }
            set {
                if (value != null && HttpContext.Current.Session["user"] == null)
                    HttpContext.Current.Session["user"] = value;
            }
        }
        #endregion Public Properties

        public static void Login(string clientToken, bool isPersistent, ref string failureText) {

            CompanyUtils companyUtils = new CompanyUtils();
            ClientUtils clientUtils = new ClientUtils();

            if (!string.IsNullOrEmpty(clientToken)) {
                // check for parts
                string[] bits = clientToken.Split('|');

                if (bits != null && bits.Length == 2) {
                    // get token
                    Token token = companyUtils.tokenForID(bits[0]);

                    if (token != null) {
                        // check if guid matches
                        if (!string.IsNullOrEmpty(token.GUID) && token.GUID == bits[1]) {
                            // all bits good

                            if (DateTime.Now < token.CreateDate.AddHours(24)) {

                                // get user and add to session
                                Client client = clientUtils.clientForID(token.UserID);


                                if (client != null && client.CompanyID != null && client.CompanyID.Length > 0) {


                                    // convert SS Client to Online Client
                                    OnlineClient result = new OnlineClient();
                                    result.ID = client.ClientID;
                                    result.Mobile = client.Mobile;
                                    result.Email = client.Email;
                                    result.CompanyID = client.CompanyID;
                                    result.DisplayName = client.DisplayName;
                                    result.Password = client.InternetPassword;

                                    // get client company details
                                    CompanyUtils compUtils = new CompanyUtils();
                                    Company company = compUtils.companyForID(client.CompanyID);

                                    if (company != null) {
                                        result.BusinessName = company.BusinessName;
                                        result.BusinessAddress = company.Address;
                                        result.BusinessSuburb = company.Suburb;
                                        result.BusinessPostcode = company.Postcode;
                                        result.BusinessTelephone = company.Telephone;
                                        result.CompanyMessage = company.CompanyMessage;
                                    }

                                    CurrentUser = result;

                                    FormsAuthentication.SetAuthCookie(String.Format("S{0}&{1}", CurrentUser.ID, CurrentUser.Password), isPersistent);
                                    FormsAuthentication.RedirectFromLoginPage(String.Format("S{0}&{1}", CurrentUser.ID, CurrentUser.Password), isPersistent);

                                } else {
                                    failureText = ERROR_WrongIDorPassword;
                                }

                            } else // remove token
                                companyUtils.deleteToken(token);
                        }
                    }
                }
            }
        }

        public static void Login(string username, string password, bool isPersistent, ref string failureText) {

            if (username != null && username.Length > 0 && password != null && password.Length > 0) {
                // get system code off front of username
                string systemCode = username.Substring(0, 1);

                // remove code from username
                username = username.Substring(1);

                if (systemCode.ToLower() == "s") {
                    // Simple Salon

                    ClientUtils cu = new ClientUtils();
                    Client client = cu.clientForID(username);
                    string decryptedPassword = null;
                    if (client.InternetPassword != null && client.InternetPassword.Length > 0) {
                        decryptedPassword = Utils.Decrypt(client.InternetPassword, CYPHER);
                    }

                    if (client != null && client.CompanyID != null && client.CompanyID.Length > 0 && decryptedPassword != null && decryptedPassword == password) {

                        // convert SS Client to Online Client
                        OnlineClient result = new OnlineClient();
                        result.ID = client.ClientID;
                        result.Mobile = client.Mobile;
                        result.Email = client.Email;
                        result.CompanyID = client.CompanyID;
                        result.DisplayName = client.DisplayName;
                        result.Password = client.InternetPassword;

                        // get client company details
                        CompanyUtils compUtils = new CompanyUtils();
                        Company company = compUtils.companyForID(client.CompanyID);

                        if (company != null) {
                            result.BusinessName = company.BusinessName;
                            result.BusinessAddress = company.Address;
                            result.BusinessSuburb = company.Suburb;
                            result.BusinessPostcode = company.Postcode;
                            result.BusinessTelephone = company.Telephone;
                            result.CompanyMessage = company.CompanyMessage;
                        }

                        CurrentUser = result;

                        FormsAuthentication.SetAuthCookie(String.Format("S{0}&{1}", CurrentUser.ID, CurrentUser.Password), isPersistent);
                        FormsAuthentication.RedirectFromLoginPage(String.Format("S{0}&{1}", CurrentUser.ID, CurrentUser.Password), isPersistent);

                    } else {
                        failureText = ERROR_WrongIDorPassword;
                    }

                }
            }
        }

        public static void LoadCurrentUser() {
            HttpCookie auth_cookie = HttpContext.Current.Request.Cookies[FormsAuthentication.FormsCookieName];
            if (auth_cookie != null) {
                if (auth_cookie.Value != null) {
                    string login_str = FormsAuthentication.Decrypt(auth_cookie.Value).Name;
                    if (!string.IsNullOrEmpty(login_str)) {
                        string[] lex = login_str.Split(new char[] { '&' });
                        if (lex.Length == 2) {
                            string login = lex[0];
                            string pass = lex[1];
                            string err = string.Empty;
                            try {
                                Login(login, pass, false, ref err);
                            } catch {

                            }
                        }
                    }
                }
            }
        }

        public static void Logout() {
            FormsAuthentication.SignOut();
            HttpContext.Current.Session.Clear();
            HttpContext.Current.Session.Abandon();
            CurrentUser = null;
            FormsAuthentication.RedirectToLoginPage();
        }

        public static string ForgotPassword(string clientId) {

            string result = String.Empty;

            if (clientId != null && clientId.Length > 0) {
                // remove code from username
                clientId = clientId.Substring(1);

                ClientUtils cu = new ClientUtils();
                CampaignUtils campaignUtils = new CampaignUtils();
                Client client = cu.clientForID(clientId);
                User user = new User();
                user.CompanyID = client.CompanyID;
                cu.SessionUser = user;
                campaignUtils.SessionUser = user;

                if (client != null) {
                    ArrayList clientList = new ArrayList();
                    clientList.Add(client);
                    string[] campIDList = campaignUtils.sendOnlineBookingsToClientList(clientList, "email", false);

                    // send campaign now
                    if (campIDList != null && campIDList.Length == 2 && !string.IsNullOrEmpty(campIDList[1])) {
                        campaignUtils.sendCampaignForID(campIDList[1]);
                    }

                    result = "Password sent!";

                }
            }

            return result;
        }

    }
}