public void NewNotificationCardView(int notificationCarId, string userId)
{
NotificationCard card = context.NotificationCards
.FirstOrDefault(c => c.NotificationCardId == notificationCarId);
NotificationViews view = new NotificationViews
{
UserId = userId
};
context.Attach(card);
view.CreatedAt = DateTime.Now;
view.UpdatedAt = DateTime.Now;
context.NotificationViews.Add(view);
context.SaveChanges();
card.UpdatedAt = DateTime.Now;
card.NotificationViews.Add(view);
context.SaveChanges();
}
//notifications
public void NewNotification(string userId, string subject, string For,
int forId, string forUserId = null)
{
Notification notification = context.Notifications
.FirstOrDefault(n => n.Subject == subject && n.For == For &&
n.ForId == forId);
if (notification != null)
{
AppUser user = userManager.Users
.FirstOrDefault(u => u.Id == userId);
string userName = (user.FirstName == null && user.LastName == null) ?
user.UserName : $"{user.FirstName} {user.LastName}";
string forName = "";
int totalUsers = 0;
NotificationCard newNotificationCard = new NotificationCard
{
CreatedBy = user.Id,
CreatedAt = DateTime.Now,
UpdatedAt = DateTime.Now
};
if (notification.Subject == "NewComment")
{
switch (notification.For)
{
case "Video":
forName = context.Videos
.FirstOrDefault(v => v.Id == notification.ForId).Title;
totalUsers = context.Comments.Where(c => c.For == "Video" &&
c.ForId == notification.ForId)
.Select(c => c.CreatedBy).Distinct().Count() - 1;
break;
case "Course":
forName = context.Courses
.FirstOrDefault(c => c.CourseId == notification.ForId).Title;
totalUsers = context.Comments.Where(c => c.For == "Course" &&
c.ForId == notification.ForId)
.Select(c => c.CreatedBy).Distinct().Count() - 1;
break;
}
newNotificationCard.Msg = (totalUsers >= 1) ?
$"{userName} and {totalUsers} others comment on {notification.For} '{forName}'" :
$"{userName} comment on {notification.For} '{forName}'";
context.Attach(notification);
context.NotificationCards.Add(newNotificationCard);
notification.NotificationCards.Add(newNotificationCard);
//set datetime of last notification
notification.NotificationDateAdded = DateTime.Now;
context.SaveChanges();
}
else if (notification.Subject == "LikeDislikeVideo")
{
forName = context.Videos
.FirstOrDefault(v => v.Id == notification.ForId).Title;
//all likes and dislikes on video
totalUsers = context.Likes
.Where(l => l.For == "Video" && l.ForId == notification.ForId)
.Select(c => c.UserId).Count();
totalUsers += context.Dislikes
.Where(d => d.For == "Video" && d.ForId == notification.ForId)
.Select(c => c.UserId).Count();
newNotificationCard.Msg = (totalUsers > 1) ?
$"{userName} and {totalUsers} others reacted on your video '{forName}'" :
$"{userName} reacted on your video '{forName}'";
context.Attach(notification);
context.NotificationCards.Add(newNotificationCard);
notification.NotificationCards.Add(newNotificationCard);
//set datetime of last notification
notification.NotificationDateAdded = DateTime.Now;
context.SaveChanges();
}
else if (notification.Subject == "LikeDislikeComment")
{
//notification.for = "Comment"
//notification.forID = CommentId
//get comment where commentId == notification.forID
Comment comment = context.Comments
.FirstOrDefault(c => c.Id == notification.ForId);
//all likes and dislikes for comment where comment.id = notification.forId
totalUsers = context.Likes
.Where(l => l.For == "Comment" && l.ForId == notification.ForId)
.Select(c => c.UserId).Count() - 1;
totalUsers += context.Dislikes
.Where(d => d.For == "Comment" && d.ForId == notification.ForId)
.Select(c => c.UserId).Count() - 1;
string commentContent = (comment.Content.Length > 25) ?
comment.Content.Substring(0, 25) + "..." : comment.Content;
newNotificationCard.Msg = (totalUsers > 1) ?
$"{userName} and {totalUsers} others reacted on your comment '{commentContent}'" :
$"{userName} reacted on your comment for '{commentContent}'";
context.Attach(notification);
context.NotificationCards.Add(newNotificationCard);
notification.NotificationCards.Add(newNotificationCard);
//set datetime of last notification
notification.NotificationDateAdded = DateTime.Now;
context.SaveChanges();
}
/*else if (notification.Subject == "NewVideo")
* {
* //for all user on course
* //if video for == course or presentation
* }*/
else if (notification.Subject == "UserJoinCourse")
{
Course course = context.Courses
.FirstOrDefault(c => c.CourseId == notification.ForId);
newNotificationCard.Msg =
$"{userName} has joined the Course '{course.Title}'";
context.Attach(notification);
context.NotificationCards.Add(newNotificationCard);
notification.NotificationCards.Add(newNotificationCard);
//set datetime of last notification
notification.NotificationDateAdded = DateTime.Now;
context.SaveChanges();
}
else if (notification.Subject == "RepresentationRating")
{
//for user who created representation
Video representationVideo = context.Videos
.FirstOrDefault(v => v.Id == notification.ForId);
if (representationVideo != null)
{
Representation representation = context.Representations
.FirstOrDefault(r => r.RepresentationId == representationVideo.ForId);
newNotificationCard.Msg =
$"Your representation {representation.Title} has been rated.";
context.Attach(notification);
context.NotificationCards.Add(newNotificationCard);
notification.NotificationCards.Add(newNotificationCard);
//set datetime of last notification
notification.NotificationDateAdded = DateTime.Now;
context.SaveChanges();
}
}
else if (notification.Subject == "NewRepresentation")
{
//for user who created course
Video representationVideo = context.Videos
.FirstOrDefault(v => v.Id == notification.ForId);
if (representationVideo != null)
{
Representation representation = context.Representations
.FirstOrDefault(r => r.RepresentationId == representationVideo.ForId);
newNotificationCard.Msg =
$"{userName} added a new representation '{representation.Title}'";
context.Attach(notification);
context.NotificationCards.Add(newNotificationCard);
notification.NotificationCards.Add(newNotificationCard);
//set datetime of last notification
notification.NotificationDateAdded = DateTime.Now;
context.SaveChanges();
}
}
else if (notification.Subject == "AddUserToGroup")
{
Group group = context.Groups.FirstOrDefault(g => g.GroupId == notification.ForId);
newNotificationCard.Msg =
$"{userName} added you to group '{group.Name}'";
context.Attach(notification);
context.NotificationCards.Add(newNotificationCard);
notification.NotificationCards.Add(newNotificationCard);
//set datetime of last notification
notification.NotificationDateAdded = DateTime.Now;
context.SaveChanges();
}
else if (notification.Subject == "NewGroupUser")
{
Group group = context.Groups.FirstOrDefault(g => g.GroupId == notification.ForId);
newNotificationCard.Msg =
$"{userName} added you to group '{group.Name}'";
context.Attach(notification);
context.NotificationCards.Add(newNotificationCard);
notification.NotificationCards.Add(newNotificationCard);
//set datetime of last notification
notification.NotificationDateAdded = DateTime.Now;
context.SaveChanges();
}
notification.UpdatedAt = DateTime.Now;
context.SaveChanges();
}
else
{
notification = new Notification
{
Subject = subject,
For = For,
ForId = forId,
ForUserId = forUserId,
NotificationDateAdded = DateTime.Now,
CreatedAt = DateTime.Now,
UpdatedAt = DateTime.Now
};
context.Notifications.Add(notification);
context.SaveChanges();
NewNotification(userId, subject, For, forId);
}
}