/// <summary>
/// Event: Get detailed information about a friend.
/// </summary>
/// <param name="sender">Sender</param>
/// <param name="e">Event Args</param>
override protected void lstFriends_MouseDoubleClick(object sender, MouseButtonEventArgs e)
{
#region The code required for diagnosis - measures the time
var spectator = new Stopwatch();
spectator.Start();
#endregion
if (lstFriends.SelectedItem == null)
return;
var frm = new InfoWindow
{
StartedRedis = _services.RedisIsStarted,
// Do not show on the taskbar.
ShowInTaskbar = false
};
Connected(_listOfFriends[lstFriends.SelectedIndex], frm);
#region The code required for diagnosis - measures the time
spectator.Stop();
var ts = spectator.Elapsed;
frm.TimeParam = $"Lead time: {ts.Hours:00}:{ts.Minutes:00}:{ts.Seconds:00}.{ts.Milliseconds/10:00}";
#endregion
frm.Show();
}
/// <summary>
/// Event: Get detailed information about a friend.
/// </summary>
/// <param name="sender">Sender</param>
/// <param name="e">Event Args</param>
private void lstFriends_MouseDoubleClick(object sender, MouseButtonEventArgs e)
{
#region The code required for diagnosis - measures the time
var spectator = new Stopwatch();
spectator.Start();
#endregion
if (lstFriends.SelectedItem == null)
return;
var userId = _listOfFriends[lstFriends.SelectedIndex];
var frm = new InfoWindow {ShowInTaskbar = false /* Do not show on the taskbar. */};
if (userId <= 100000)
{
using (var context = new Storage1Context())
{
ConnectToServer1(context, userId, frm);
}
}
else if (userId > 100000 && userId < 200000)
{
using (var context = new Storage2Context())
{
ConnectToServer2(context, userId, frm);
}
}
else if (userId > 200000 && userId < 300000)
{
using (var context = new Storage3Context())
{
ConnectToServer3(context, userId, frm);
}
}
else if (userId > 300000 && userId < 400000)
{
using (var context = new Storage4Context())
{
ConnectToServer4(context, userId, frm);
}
}
else if (userId > 400000 && userId < 500000)
{
using (var context = new Storage5Context())
{
ConnectToServer5(context, userId, frm);
}
}
#region The code required for diagnosis - measures the time
spectator.Stop();
var ts = spectator.Elapsed;
frm.TimeParam = $"Lead time: {ts.Hours:00}:{ts.Minutes:00}:{ts.Seconds:00}.{ts.Milliseconds/10:00}";
#endregion
frm.Show();
}
/// <summary>
/// Determine the database with which it is necessary to make the connection.
/// The method for the modal form.
/// </summary>
/// <param name="userId">User ID.</param>
/// <param name="frm">An instance of a modal form.</param>
private void Connected(int userId, InfoWindow frm)
{
try
{
var localDb = new DataBase();
if (userId <= 100000)
{
using (var context = new Storage1Context())
{
localDb.ConnectToServer1(context, userId, _services, _logging, _friend, lstFriends, frm);
}
}
else if (userId > 100000 && userId <= 200000)
{
using (var context = new Storage2Context())
{
localDb.ConnectToServer2(context, userId, _services, _logging, _friend, lstFriends, frm);
}
}
else if (userId > 200000 && userId <= 300000)
{
using (var context = new Storage3Context())
{
localDb.ConnectToServer3(context, userId, _services, _logging, _friend, lstFriends, frm);
}
}
else if (userId > 300000 && userId <= 400000)
{
using (var context = new Storage4Context())
{
localDb.ConnectToServer4(context, userId, _services, _logging, _friend, lstFriends, frm);
}
}
else if (userId > 400000 && userId <= 500000)
{
using (var context = new Storage5Context())
{
localDb.ConnectToServer5(context, userId, _services, _logging, _friend, lstFriends, frm);
}
}
}
catch (ArgumentOutOfRangeException ex)
{
_logging.ProcessingException(ex);
MessageBox.Show(ex.Message, "Connection error", MessageBoxButton.OK, MessageBoxImage.Error);
}
}
/// <summary>
/// The connection method to Storage5.
/// Called from an event handler lstFriends_MouseDoubleClick.
/// </summary>
/// <param name="context">The context of the interaction with the database.</param>
/// <param name="userId">User ID.</param>
/// <param name="frm">Instance a modal window.</param>
private void ConnectToServer5(Storage5Context context, int userId, InfoWindow frm)
{
RedisOrSQLStorage5(context, userId, frm);
var queryFriendsStorage = context.Friends.Where(x => x.User_Id == userId);
var friends = queryFriendsStorage.ToList();
foreach (var f in friends)
{
if (f.Friend_Id < 100000)
{
using (var storage1Context = new Storage1Context())
{
frm.FriendsParam = FindFriendsStorage1(storage1Context, f, frm);
}
}
else if (f.Friend_Id > 100000 && f.Friend_Id < 200000)
{
using (var storage2Context = new Storage2Context())
{
frm.FriendsParam = FindFriendsStorage2(storage2Context, f, frm);
}
}
else if (f.Friend_Id > 200000 && f.Friend_Id < 300000)
{
using (var storage3Context = new Storage3Context())
{
frm.FriendsParam = FindFriendsStorage3(storage3Context, f, frm);
}
}
else if (f.Friend_Id > 300000 && f.Friend_Id < 400000)
{
using (var storage4Context = new Storage4Context())
{
frm.FriendsParam = FindFriendsStorage4(storage4Context, f, frm);
}
}
else if (f.Friend_Id > 400000 && f.Friend_Id < 500000)
{
frm.FriendsParam = FindFriendsStorage5(context, f, frm);
}
}
}
/// <summary>
/// Methods of forming a string name = Last Name + First Name, which will be added to the list.
/// Called from the methods GetUserInfoFromStorage.
/// </summary>
/// <param name="context">The context of the interaction with the database.</param>
/// <param name="f">The object to be added.</param>
/// <param name="frm">Instance a modal window.</param>
private static string FindFriendsStorage5(Storage5Context context, Friends f, InfoWindow frm)
{
var queryFriend = context.User.Where(x => x.Id == f.Friend_Id);
var elementToAdd = queryFriend.ToList();
frm.ListOfFriendsParam = elementToAdd[0].Id;
return (elementToAdd[0].Last_Name + ' ' + elementToAdd[0].First_Name);
}
/// <summary>
/// Check Method cached user in Redis or not.
/// If the user is not cached in Redis then its cache.
/// Called from the method ConnectToServer (modal).
/// </summary>
/// <param name="context">The context of the interaction with the database.</param>
/// <param name="userId">User ID.</param>
/// <param name="frm">Instance a modal window.</param>
private void RedisOrSQLStorage5(Storage5Context context, int userId, InfoWindow frm)
{
IDatabase db = null;
if (_redisIsStarted)
{
using (var redisClient = ConnectionMultiplexer.Connect("localhost"))
{
db = redisClient.GetDatabase();
string value = db.StringGet($"user:{userId}");
if (string.IsNullOrEmpty(value))
{
var queryUserStorage = context.User.Where(x => x.Id == userId);
GetDataFromSQL(queryUserStorage, db, true, frm);
}
else
{
GetDataFromRedis(value, frm);
}
}
}
else
{
var queryUserStorage = context.User.Where(x => x.Id == userId);
GetDataFromSQL(queryUserStorage, db, false, frm);
}
}
/// <summary>
/// Method of getting data from Redis.
/// Called from the method RedisOrSQLStorage.
/// </summary>
/// <param name="value">JSON-string.</param>
/// <param name="frm">Instance a modal window.</param>
private static void GetDataFromRedis(string value, InfoWindow frm)
{
value = value.Substring(value.IndexOf("[", StringComparison.Ordinal) + 1);
value = value.Substring(0, value.LastIndexOf("]", StringComparison.Ordinal));
var u = JsonConvert.DeserializeObject<User>(value);
frm.FirstNameParam = u.First_Name;
frm.LastNameParam = u.Last_Name;
frm.AgeParam = u.Age.ToString();
frm.BioParam = u.Bio;
frm.CountryParam = u.Country;
frm.CityParam = u.City;
}
/// <summary>
/// Method of getting data from SQL.
/// Called from the method RedisOrSQLStorage.
/// </summary>
/// <param name="queryUserStorage">Query our request.</param>
/// <param name="db">Connecting with Redis.</param>
/// <param name="redisIsStarted">The flag to check launched Redis.</param>
/// <param name="frm">Instance a modal window.</param>
private static void GetDataFromSQL(IEnumerable<User> queryUserStorage, IDatabase db, bool redisIsStarted, InfoWindow frm)
{
var user = queryUserStorage.ToList();
frm.FirstNameParam = user[0].First_Name;
frm.LastNameParam = user[0].Last_Name;
frm.AgeParam = user[0].Age.ToString();
frm.BioParam = user[0].Bio;
frm.CountryParam = user[0].Country;
frm.CityParam = user[0].City;
if (redisIsStarted)
RedisSetData(db, user);
}
