/// <author>Kenneth Søhrmann</author>
public bool SubmitReview(MediaReview review, AccountCredentials credentials)
{
// Validate the credentials.
ValidateCredentials(credentials);
// Check if the user name of the credentials match the one of the review.
if (!credentials.UserName.Equals(review.UserName))
{
throw new FaultException<ArgumentException>(
new ArgumentException("The user name specified in review does not match that of the credentials."));
}
DatabaseDataContext db;
try
{
db = new DatabaseDataContext();
}
catch (Exception e)
{
throw new FaultException<Exception>(
new Exception("1. An internal error has occured. This is not related to the input. " + e.Message));
}
// Get the media instance reviewed.
RentItDatabase.Media media;
try
{
media = (from m in db.Medias
where m.id.Equals(review.MediaId)
select m).Single();
}
catch (Exception)
{
throw new FaultException<ArgumentException>(
new ArgumentException("The specified media id does not exist."));
}
// Get the account of the reviewer.
RentItDatabase.User_account userAccount;
try
{
userAccount = (from u in db.User_accounts
where u.user_name.Equals(review.UserName)
select u).Single();
}
catch (Exception)
{
throw new FaultException<ArgumentException>(
new ArgumentException("Only user accounts can add reviews. If it fails with a user account, an internal error has occured."));
}
try
{
// Create a new database-entry of the submitted review.
var dbReview = new RentItDatabase.Review
{
Media = media,
review1 = review.ReviewText,
rating = Util.ValueOfRating(review.Rating),
timestamp = review.Timestamp,
User_account = userAccount,
};
db.Reviews.InsertOnSubmit(dbReview);
// Calculate new average rating and rating count.
double avgRating = media.Rating.avg_rating;
int numOfRatings = media.Rating.ratings_count;
media.Rating.avg_rating = ((avgRating * numOfRatings) + Util.ValueOfRating(review.Rating))
/ (numOfRatings + 1.0);
media.Rating.ratings_count = numOfRatings + 1;
db.SubmitChanges();
}
catch (Exception e)
{
throw new FaultException<Exception>(
new Exception("2 An internal error has occured. This is not related to the input. " + e.Message));
}
return true;
}
/// <summary>
/// Update the ListView with new data.
/// When this method is called, all data previously added to the list
/// will be disregarded, and the contents of the ListView will match
/// the media items passed in the parameter.
/// </summary>
/// <param name="reviews">
/// The list of reviews to be added to the list.
/// </param>
internal void UpdateListContents(MediaReview[] reviews)
{
this.BeginUpdate();
this.CurrentItems = new List<ListViewItem>();
foreach (var review in reviews)
{
string reviewText = review.ReviewText.Length > 70
? review.ReviewText.Substring(0, 70) + " ..."
: review.ReviewText;
var item = new ListViewItem(review.UserName);
item.SubItems.Add(review.Timestamp.Date.ToString("dd/MM/yyyy HH:mm"));
item.SubItems.Add(reviewText);
item.SubItems.Add(review.Rating.ToString());
item.Tag = review;
this.CurrentItems.Add(item);
}
this.RePopulateList();
this.EndUpdate();
}
public void SubmitReviewExceptionTest()
{
RentItClient target = new RentItClient();
MediaReview review = new MediaReview
{
MediaId = 64,
Rating = Rating.Three,
ReviewText = "Bucket.",
Timestamp = DateTime.Now,
UserName = "******"
};
AccountCredentials credentials = new AccountCredentials
{
UserName = "******",
HashedPassword = "******"
};
target.SubmitReview(review, credentials);
target.SubmitReview(review, credentials);
}
public void SubmitReviewTest()
{
RentItClient target = new RentItClient();
const string User = "******";
const int MediaId = 79;
MediaReview review = new MediaReview
{
MediaId = MediaId,
Rating = Rating.Three,
ReviewText = "Bucketboy, yes.",
Timestamp = DateTime.Now,
UserName = User
};
AccountCredentials credentials = new AccountCredentials
{
UserName = User,
HashedPassword = "******"
};
bool actual = target.SubmitReview(review, credentials);
Assert.IsTrue(actual);
this.SubmitReviewCleanup(User, MediaId);
}
private void SubmitReviewButtonClick(object sender, EventArgs e)
{
if (Credentials == null)
return;
Rating rating;
switch (RatingSelector.SelectedIndex)
{
case 0:
rating = RentIt.Rating.One;
break;
case 1:
rating = RentIt.Rating.Two;
break;
case 2:
rating = RentIt.Rating.Three;
break;
case 3:
rating = RentIt.Rating.Four;
break;
case 4:
rating = RentIt.Rating.Five;
break;
default:
rating = RentIt.Rating.Three;
break;
}
var review = new MediaReview
{
MediaId = Media.Id,
Rating = rating,
ReviewText = ReviewText.Text,
Timestamp = DateTime.Now,
UserName = Credentials.UserName
};
// submit review
Cursor.Current = Cursors.WaitCursor;
try
{
RentItProxy.SubmitReview(review, Credentials);
}
catch (FaultException)
{
// if review was already submitted by this user
RentItMessageBox.AlreadyReviewedItem();
return;
}
// reload list
ReloadList();
Cursor.Current = Cursors.Default;
}
