/// <summary>
/// Update the user setting profile given the identity user's username.
/// </summary>
/// <param name="userName"></param>
/// <param name="userSetting"></param>
/// <param name="newsCategoryNames"></param>
public void Update(string userName, UserSetting userSetting, ICollection <string> newsCategoryNames)
{
// Find the user setting
var oldUserSetting = Read(userName);
// When the setting is found
if (oldUserSetting != null)
{
// And when at least one categories are provided
if (newsCategoryNames != null)
{
// Iterate over each news category
foreach (var news in newsCategoryNames)
{
// Create the news category
var userNewsCategory = new UserSettingNewsCategory
{
Id = 0,
NewsCategory = _applicationdb.NewsCategories.FirstOrDefault(n => n.Name == news),
UserSetting = userSetting
};
oldUserSetting.UserSettingNewsCategories.Add(userNewsCategory);
}
}
// Update all old settings that can be changed
oldUserSetting.FirstName = userSetting.FirstName;
oldUserSetting.LastName = userSetting.LastName;
_applicationdb.SaveChanges();
}
}
/// <summary>
/// Delete a news source given a source ID
/// And a user setting object.
/// </summary>
/// <param name="id"></param>
/// <param name="user"></param>
public void DeleteNewsSource(int id, UserSetting user)
{
// Search for the user, and eager load the associations
var userAssoc = Read(user.Id);
NewsSource connectedSource = null;
UserSettingNewsCategory connectedCategory = null;
// Iterate over each category
foreach (var category in userAssoc.UserSettingNewsCategories)
{
// Find the news category
connectedCategory = category;
var firstNewsSource = category.NewsSources.Where(s => s.Id == id);
// When the news source is found
if (firstNewsSource != null && firstNewsSource.Count() >= 1)
{
// Add it to the list of sources that have been found connected to the user's category
connectedSource = firstNewsSource.First();
}
}
// When the user, source, and category are identified to exist
if (connectedSource != null && connectedCategory != null && userAssoc != null)
{
// Delete the news source
_db.NewsSources.Remove(connectedSource);
connectedCategory.NewsSources.Remove(connectedSource);
_db.SaveChanges();
}
}
/// <summary>
/// Read in an identity user username and find the
/// identity user object from the username.
/// Then, find the associated user setting and return
/// it along with all associations.
/// The first time this is called, the identity user
/// does not have an associated user setting, so it is created.
/// </summary>
/// <param name="userName"></param>
/// <returns>UserSetting</returns>
public UserSetting Read(string userName)
{
UserSetting user = null;
IdentityUser identityUser = _applicationdb.Users.FirstOrDefault(u => u.UserName == userName);
// When the identity user is not found
if (identityUser != null)
{
// Get the user setting
user = _applicationdb.UserSettings.Include(u => u.UserSettingNewsCategories).FirstOrDefault(u => u.IdentityUserId == identityUser.Id);
// If the user is not found
if (user == null)
{
// Create the user profile settings
user = new UserSetting
{
Id = 0,
IdentityUserId = identityUser.Id,
User = identityUser,
FirstName = "",
LastName = "",
Country = "us",
Language = "en"
};
// Create the default general news category
var userNewsCategory = new UserSettingNewsCategory
{
Id = 0,
NewsCategory = _applicationdb.NewsCategories.Include(u => u.UserSettingNewsCategories).FirstOrDefault(n => n.Name == "general"),
UserSetting = user
};
// Add the news category
user.UserSettingNewsCategories.Add(userNewsCategory);
// Save all the additions
_applicationdb.UserSettings.Add(user);
_applicationdb.SaveChanges();
}
}
// When the user is found
if (user != null)
{
// Iterate over each news settings
foreach (var settingNews in user.UserSettingNewsCategories)
{
// Load all associations
_applicationdb.Entry(settingNews).Reference("NewsCategory").Load();
_applicationdb.Entry(settingNews).Collection("NewsSources").Load();
}
}
return(user);
}
/// <summary>
/// Create a news source given a source name and a category
/// </summary>
/// <param name="name"></param>
/// <param name="category"></param>
public void CreateNewsSource(string name, UserSettingNewsCategory category)
{
// Instantiate a new news source
var source = new NewsSource
{
Id = 0,
SourceId = name,
UserSettingNewsCategory = category,
UserSettingNewsCategoryId = category.Id
};
// Add the source to the news sources
_db.NewsSources.Add(source);
// Also add the news source to the category
category.NewsSources.Add(source);
// Save the changes
_db.SaveChanges();
}