using CommonAD.Models;
using System;
using System.Collections.Generic;
using System.DirectoryServices;


namespace CommonAD
{
    public class ADStaffLink
    {
        private ADConfig _adConfig;
        public ADStaffLink (ADConfig adConfig)
        {
            _adConfig = adConfig;
        }
        public MyADObject SearchStaff(string FirstName = "", string LastName = "")
        {
           
            MyADObject ADObj = new MyADObject();
          
            using (var DE = new System.DirectoryServices.DirectoryEntry(_adConfig.LDAPPath, _adConfig.LDAPUser, _adConfig.LDAPPassword))
            {
                try
                {
                    DirectorySearcher adsSearcher = new DirectorySearcher(DE);
                    adsSearcher.ClientTimeout = _adConfig.ADTimeOut;
                    adsSearcher.ServerTimeLimit = _adConfig.ADTimeOut;
                    adsSearcher.ServerPageTimeLimit = _adConfig.ADTimeOut;
                    adsSearcher.Filter = string.Format("(&(objectCategory=person)(objectClass=user)(givenname={0})(sn={1}))", FirstName, LastName);
                    try
                    {
                        SearchResult sr = adsSearcher.FindOne();
                        if (sr != null)
                        {
                            ADObj.result = true;
                            //LoginResult.Login = GetUserPropertyValue(sr, "sAMAccountName", 0);
                            ADObj.StafflinkNo = GetUserPropertyValue(sr, "sAMAccountName", 0);
                            ADObj.FirstName = GetUserPropertyValue(sr, "givenname", 0);
                            ADObj.LastName = GetUserPropertyValue(sr, "sn", 0);
                            ADObj.Email = GetUserPropertyValue(sr, "mail", 0);
                            ADObj.Company = GetUserPropertyValue(sr, "company", 0);
                            ADObj.Location = GetUserPropertyValue(sr, "physicalDeliveryOfficeName", 0);
                            ADObj.Department = GetUserPropertyValue(sr, "department", 0);
                            ADObj.BadPwdCount = GetUserPropertyValue(sr, "badPwdCount", 0);
                            ADObj.Phone = GetUserPropertyValue(sr, "telephonenumber", 0);
                            ADObj.DisplayName = GetUserPropertyValue(sr, "displayName", 0);
                            ADObj.Manager = GetUserPropertyValue(sr, "manager", 0);
                            ADObj.ReportsTo = GetUserPropertyValue(sr, "directReports", 0);
                            ADObj.StaffList = GetUserPropertyValue(sr, "staffList", 0);
                        }
                    }
                    catch 
                    {
                        // Failed to authenticate. Most likely it is caused by unknown user
                        // id or bad strPassword.
                        ADObj.result = false;
                    }
                }
                catch 
                {
                    ADObj.result = false;
                }
            }

            //LoginResult.Success = res;
            //string token = "";
            //long tickTock = DateTime.Now.Ticks;
            //if (res)
            //{
            //    string tokenPT = app + "|" + user + "|" + "|" + tickTock + "|" + "NBM";
            //    token = CommonCrypt.EncryptString(tokenPT, "bagmas2011+", "a1b2c3d4");
            //    token = CommonEncoding.Base64Encode(token);
            //}
            //LoginResult.Login = user;
            //LoginResult.Token = token;
            //LoginResult.Time = tickTock;
            return ADObj;


        }
        public MyADObject SearchStaff(string StaffLinkNo)
        {
           
            MyADObject ADObj = new MyADObject();
          
            using (var DE = new System.DirectoryServices.DirectoryEntry(_adConfig.LDAPPath, _adConfig.LDAPUser, _adConfig.LDAPPassword))
            {
                try
                {
                    DirectorySearcher adsSearcher = new DirectorySearcher(DE);
                    adsSearcher.ClientTimeout = _adConfig.ADTimeOut;
                    adsSearcher.ServerTimeLimit = _adConfig.ADTimeOut;
                    adsSearcher.ServerPageTimeLimit = _adConfig.ADTimeOut;
                    adsSearcher.Filter = "(SAMAccountName=" + StaffLinkNo + ")";
                    try
                    {
                        SearchResult sr = adsSearcher.FindOne();
                        if (sr != null)
                        {
                            ADObj.result = true;
                          //  LoginResult.Login = GetUserPropertyValue(sr, "sAMAccountName", 0); ;
                            ADObj.StafflinkNo = GetUserPropertyValue(sr, "SAMAccountName", 0);
                            ADObj.FirstName = GetUserPropertyValue(sr, "givenname", 0);
                            ADObj.LastName = GetUserPropertyValue(sr, "sn", 0);
                            ADObj.Email = GetUserPropertyValue(sr, "mail", 0);
                            ADObj.Company = GetUserPropertyValue(sr, "company", 0);
                            ADObj.Location = GetUserPropertyValue(sr, "physicalDeliveryOfficeName", 0);
                            ADObj.Department = GetUserPropertyValue(sr, "department", 0);
                            ADObj.JobTitle = GetUserPropertyValue(sr, "title", 0);
                            ADObj.BadPwdCount = GetUserPropertyValue(sr, "badPwdCount", 0);
                            ADObj.Phone = GetUserPropertyValue(sr, "telephonenumber", 0);
                            ADObj.DisplayName = GetUserPropertyValue(sr, "displayName", 0);
                            ADObj.Manager = GetUserPropertyValue(sr, "manager", 0);
                            ADObj.ReportsTo = GetUserPropertyValue(sr, "directReports", 0);
                            ADObj.StaffList = GetUserPropertyValue(sr, "staffList", 0);
                        }
                    }
                    catch (Exception ex)
                    {
                        // Failed to authenticate. Most likely it is caused by unknown user
                        // id or bad strPassword.
                        ADObj.result = false;
                    }
                }
                catch
                {
                    ADObj.result = false;
                }
            }

            //LoginResult.Success = res;
            //string token = "";
            //long tickTock = DateTime.Now.Ticks;
            //if (res)
            //{
            //    string tokenPT = app + "|" + user + "|" + "|" + tickTock + "|" + "NBM";
            //    token = CommonCrypt.EncryptString(tokenPT, "bagmas2011+", "a1b2c3d4");
            //    token = CommonEncoding.Base64Encode(token);
            //}
            //LoginResult.Login = user;
            //LoginResult.Token = token;
            //LoginResult.Time = tickTock;
            return ADObj;


        }
        public MyADObject CheckADCredentials(string user, string pass)
        {
            //dynamic LoginResult = new JObject() as dynamic;
            bool res = true;
            MyADObject ADObj = new MyADObject();
            
            using (var DE = new System.DirectoryServices.DirectoryEntry(_adConfig.LDAPPath, user, pass))
            {
                try
                {
                    //DE.RefreshCache(); // This will force credentials validation
                    DirectorySearcher adsSearcher = new DirectorySearcher(DE);
                    adsSearcher.ClientTimeout = _adConfig.ADTimeOut;
                    adsSearcher.ServerTimeLimit = _adConfig.ADTimeOut;
                    adsSearcher.ServerPageTimeLimit = _adConfig.ADTimeOut;
                    //adsSearcher.Filter = "(&(objectClass=user)(objectCategory=person))";
                    adsSearcher.Filter = "(sAMAccountName=" + user + ")";

                    try
                    {
                        SearchResult sr = adsSearcher.FindOne();
                        if (sr != null)
                        {
                            ADObj.StafflinkNo = GetUserPropertyValue(sr, "sAMAccountName", 0); ;
                            ADObj.FirstName = GetUserPropertyValue(sr, "givenname", 0);
                            ADObj.LastName = GetUserPropertyValue(sr, "sn", 0);
                            ADObj.Email = GetUserPropertyValue(sr, "mail", 0);
                            ADObj.Company = GetUserPropertyValue(sr, "company", 0);
                            ADObj.Location = GetUserPropertyValue(sr, "physicalDeliveryOfficeName", 0);
                            ADObj.Department = GetUserPropertyValue(sr, "department", 0);
                            ADObj.BadPwdCount = GetUserPropertyValue(sr, "badPwdCount", 0);
                            ADObj.Phone = GetUserPropertyValue(sr, "telephonenumber", 0);
                            ADObj.DisplayName = GetUserPropertyValue(sr, "displayName", 0);
                            ADObj.Manager = GetUserPropertyValue(sr, "manager", 0);

                            // we will retrieve the count of staff in DirectReports as a flag to determine if this user is a manager
                            // we will assume if no staff then requests lodged by this user will need signoff by their manager
                            //LoginResult.StaffListCount = sr.Properties["DirectReports"].Count;
                            //LoginResult.PWD = ADConfig.LDAPPassword;
                            //LoginResult.User = ADConfig.LDAPUser;


                            /*                         // we do not think we need actual staff IDs at this point - a count of staff will be enough for this application
                                                       // but leave here in case we need to re-use this in another app.
                                                       List<string> StaffList = new List<string>();
                                                       foreach (string objProperty in sr.Properties["DirectReports"])
                                                       {


                                                           string emp = objProperty.ToString().Split(',')[0];
                                                           emp = emp.Replace("CN=", "");
                                                           StaffList.Add(emp);
                                                           //emps.Add(emp);
                                                           //user.StaffList += '|';
                                                           //user.StaffList += emp;
                                                           //
                                                       }
                                                       LoginResult.StaffList = JsonConvert.SerializeObject(StaffList);
                           */

                            try
                            {
                                if (ADObj.Manager != String.Empty)
                                {
                                    String managerInfo = Convert.ToString(ADObj.Manager);
                                    String managerID = managerInfo.Split(',')[0].Split('=')[1];
                                    String managerOU = managerInfo.Split(',')[1].Split('=')[1];
                                    List<MyADObject> managerDetails = Search(managerID, managerOU);
                                    //                                   JToken managerDetails = Search(managerID);
                                    ADObj.ManagerDetails = managerDetails[0].ToString();
                                }
                            }
                            catch (Exception ex)
                            {
                                ADObj.ManagerDetails = "Not available: " + ex.Message;
                            }

                        }
                    }
                    catch (Exception ex2)
                    {
                        // Failed to authenticate. Most likely it is caused by unknown user
                        // id or bad strPassword.
                        res = false;
                    }
                }
                catch 
                {
                    res = false;
                }
            }

            ADObj.result = res;
          //  string token = "";
           // long tickTock = DateTime.Now.Ticks;
           // if (res)
           // {
                //string tokenPT = app + "|" + user + "|" + pass + "|" + tickTock + "|" + "NBM";
                //token = CommonCrypt.EncryptString(tokenPT, "bagmas2011+", "a1b2c3d4");
                //token = CommonEncoding.Base64Encode(token);
            //}

            //LoginResult.Token = token;
            //LoginResult.Time = tickTock;


            //return LoginResult;
            return ADObj;

        }
        public List<MyADObject> Search(string q, string ou)
        {
            //ou = "Nepean Blue Mountains";
            MyADObject ADObj = new Models.MyADObject();
            //ADConfig.Init();

            List<MyADObject> lstLDAPUser = new List<MyADObject>();

            if (string.IsNullOrEmpty(q))
                q = "______"; //defualt not found
            System.DirectoryServices.DirectoryEntry dirEntry = new System.DirectoryServices.DirectoryEntry(_adConfig.LDAPPath, _adConfig.LDAPUser, _adConfig.LDAPPassword);
            DirectorySearcher dirSearch = new DirectorySearcher(dirEntry);
            dirSearch.ClientTimeout = _adConfig.ADTimeOut;
            dirSearch.ServerTimeLimit = _adConfig.ADTimeOut;
            dirSearch.ServerPageTimeLimit = _adConfig.ADTimeOut;
            dirSearch.Filter = "(&(objectClass=user)(|(cn=" + q + "*)))";
            dirSearch.SearchRoot = dirEntry;
            dirSearch.SearchScope = SearchScope.Subtree;
            dirSearch.PageSize = 100;
            dirSearch.Sort = new SortOption("displayName", SortDirection.Ascending);


            using (SearchResultCollection src = dirSearch.FindAll())
            {
                int i = 0;
                foreach (SearchResult sr in src)
                {
                    i++;
                    if (i > 100)
                        break;
                    bool bLogindisabled = true;

                    string sTmp = GetUserPropertyValue(sr, "logindisabled", 0);
                    bLogindisabled = (sTmp == string.Empty ? false : Convert.ToBoolean(sTmp));

                    if (!bLogindisabled)
                    {
                        sTmp = GetUserPropertyValue(sr, "passwordexpirationtime", 0);
                        if (sTmp != "")
                        {
                            try
                            {
                                if (DateTime.Now > Convert.ToDateTime(sTmp))
                                {
                                    bLogindisabled = true;
                                }
                            }
                            catch { }
                        }
                    }

                    if (!bLogindisabled)
                    {
                        MyADObject user = new MyADObject();
                        //   user.Login = GetUserPropertyValue(sr, "sAMAccountName", 0); 
                        user.StafflinkNo = GetUserPropertyValue(sr, "sAMAccountName", 0);
                        user.FirstName = GetUserPropertyValue(sr, "givenname", 0);
                        user.LastName = GetUserPropertyValue(sr, "sn", 0);
                        user.Email = GetUserPropertyValue(sr, "mail", 0);
                        user.Company = GetUserPropertyValue(sr, "company", 0);
                        user.Location = GetUserPropertyValue(sr, "physicalDeliveryOfficeName", 0);
                        user.Department = GetUserPropertyValue(sr, "department", 0);
                        user.BadPwdCount = GetUserPropertyValue(sr, "badPwdCount", 0);
                        //user.company = GetUserPropertyValue(sr, "company", 0);
                        user.Phone = GetUserPropertyValue(sr, "telephonenumber", 0);
                        user.DisplayName = GetUserPropertyValue(sr, "displayName", 0);
                        //user.distinguishedName = GetUserPropertyValue(sr, "distinguishedName", 0);
                        user.DisplayName = GetUserPropertyValue(sr, "displayName", 0);

                        lstLDAPUser.Add(user);
                    }

                }

            }
            if (dirSearch != null)
                dirSearch.Dispose();
            if (dirEntry != null)
                dirEntry.Dispose();
            return lstLDAPUser;

        }//end method
        private string GetUserPropertyValue(SearchResult res, string sPropertyName, int lIndex)
        {
            try
            {
                if (res.Properties[sPropertyName].Count > lIndex)
                {
                    string s;
                    object v = res.Properties[sPropertyName][lIndex];

                    if (v.GetType() == typeof(byte[]))
                    {
                        s = System.Text.ASCIIEncoding.ASCII.GetString((byte[])v);
                    }
                    else if (v.GetType() == typeof(DateTime))
                    {
                        s = ((DateTime)v).ToLocalTime().ToString("yyyy/MM/dd HH:mm:ss");
                    }
                    else
                    {
                        s = v.ToString();
                    }
                    return (s);
                }
                else
                {
                    return ("");
                }
            }
            catch
            {
                return ("");
            }
        }
    }
}