using System;
using System.Collections.Generic;
using System.Data.SqlClient;
using Tanshu.Accounts.Contracts;
using Tanshu.Data.DAO;
using Tanshu.Accounts.DAOFactory;

namespace Tanshu.Accounts.SqlDAO
{
    public class UserDAO : BaseDAO, IUserDAO
    {
        public UserDAO(IConnectionDAO connection)
            : base(connection)
        { }

        public UserBO GetUser(Guid userID)
        {
            SqlCommand cmd = new SqlCommand("SELECT * FROM Auth_Users WHERE UserID = @UserID");
            cmd.Parameters.AddWithValue("@UserID", userID);
            return BusinessObjectDAO<UserBO>.GetBusinessObject(connection.ExecuteReader(cmd));
        }
        public List<UserBO> GetUsers()
        {
            return BusinessObjectDAO<UserBO>.GetBusinessObjects(connection.ExecuteReader("SELECT * FROM Auth_Users"));
        }
        public List<UserBO> GetFilteredUsers(Dictionary<string, string> filter)
        {
            string name = string.Format("%{0}%", filter["Name"]);
            using (SqlCommand cmd = new SqlCommand("SELECT * FROM Auth_Users WHERE Name LIKE @Name ORDER BY Name"))
            {
                cmd.Parameters.AddWithValue("@Name", name);
                return BusinessObjectDAO<UserBO>.GetBusinessObjects(connection.ExecuteReader(cmd));
            }
        }
        public bool UserExists(string userName)
        {
            using (SqlCommand cmd = new SqlCommand("SELECT Count(*) FROM Auth_Users WHERE Name = @Name"))
            {
                cmd.Parameters.AddWithValue("@Name", userName);
                return (int)connection.ExecuteScalar(cmd) == 1;
            }
        }
        public bool Insert(UserBO user)
        {
            using (SqlCommand cmd = new SqlCommand(@"
SELECT @UserID = NEWID()
INSERT INTO Auth_Users (UserID, Name, Password, LockedOut) 
VALUES (@UserID, @Name, @Password, @LockedOut)
SELECT @timestamp = timestamp FROM Auth_Users WHERE UserID = @UserID
"))
            {
                cmd.Parameters.Add("@UserID", System.Data.SqlDbType.UniqueIdentifier);
                cmd.Parameters["@UserID"].Direction = System.Data.ParameterDirection.Output;
                cmd.Parameters.AddWithValue("@Name", user.Name);
                cmd.Parameters.AddWithValue("@Password", user.Password);
                cmd.Parameters.AddWithValue("@LockedOut", user.LockedOut);
                cmd.Parameters.Add("@timestamp", System.Data.SqlDbType.Timestamp);
                cmd.Parameters["@timestamp"].Direction = System.Data.ParameterDirection.Output;
                connection.ExecuteNonQuery(cmd);
                user.UserID = (Guid)cmd.Parameters["@UserID"].Value;
                user.timestamp = (byte[])cmd.Parameters["@timestamp"].Value;
                return true;
            }
        }
        //public bool CheckPassword(string userName, string password)
        //{
        //    using (SqlCommand cmd = new SqlCommand("SELECT Count(*) FROM Auth_Users WHERE Name = @Name AND Password = @Password"))
        //    {
        //        cmd.Parameters.AddWithValue("@Name", userName);
        //        cmd.Parameters.AddWithValue("@Password", password);
        //        return (int)connection.ExecuteScalar(cmd) == 1;
        //    }
        //}
        public bool ChangePassword(UserBO userData, string newPassword)
        {
            using (SqlCommand cmd = new SqlCommand("UPDATE Auth_Users SET Password = @NewPassword WHERE Name = @Name AND Password = @Password; SELECT @@rowcount"))
            {
                cmd.Parameters.AddWithValue("@Name", userData.Name);
                cmd.Parameters.AddWithValue("@Password", userData.Password);
                cmd.Parameters.AddWithValue("@NewPassword", newPassword);
                return (int)connection.ExecuteScalar(cmd) == 1;
            }
        }

        public bool Update(UserBO user)
        {
            using (SqlCommand cmd = new SqlCommand(@"
UPDATE Auth_Users SET 
    Name = @Name, 
    Password = @Password, 
    LockedOut = @LockedOut
WHERE UserID = @UserID;
SELECT @timestamp = timestamp FROM Auth_Users WHERE UserID = @UserID
"))
            {
                cmd.Parameters.AddWithValue("@UserID", user.UserID);
                cmd.Parameters.AddWithValue("@Name", user.Name);
                cmd.Parameters.AddWithValue("@Password", user.Password);
                cmd.Parameters.AddWithValue("@LockedOut", user.LockedOut);
                cmd.Parameters.Add("@timestamp", System.Data.SqlDbType.Timestamp);
                cmd.Parameters["@timestamp"].Direction = System.Data.ParameterDirection.Output;
                connection.ExecuteNonQuery(cmd);
                user.timestamp = (byte[])cmd.Parameters["@timestamp"].Value;
                return true;
            }
        }

        public bool Delete(Guid userID)
        {
            using (SqlCommand cmd = new SqlCommand("DELETE FROM Auth_Users WHERE UserID = @UserID"))
            {
                cmd.Parameters.AddWithValue("@UserID", userID);
                connection.ExecuteNonQuery(cmd);
                return true;
            }
        }
    }
}

//private static log4net.ILog log 
//= log4net.LogManager.GetLogger(
//  System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);