/// <summary>
/// Constructor for YearInGroup form. Assings repositories, disables buttons for non admin users.
/// </summary>
/// <param name="_groupId">Id of a group the year belongs to.</param>
/// <param name="_yearId">Id of a selected year.</param>
/// <param name="_isAdmin">Determines wether the form is displayed by an admin.</param>
public YearInGroupForm(int _groupId, int _yearId, bool _isAdmin)
{
InitializeComponent();
groupId = _groupId;
yearId = _yearId;
isAdmin = _isAdmin;
users = new HttpUsersRepository();
years = new HttpYearsRepository();
subjects = new HttpSubjectsRepository();
groupDetails = new HttpGroupDetailsRepository();
usersGridView.CellDoubleClick += seeUser;
subjectsGridView.CellDoubleClick += editSubject;
UpdateTables();
btnAddSubject.Click += AddSubject;
if (!isAdmin)
{
btnAddSubject.Visible = false;
btnDeleteYear.Visible = false;
btnEditYear.Visible = false;
}
}
/// <summary>
/// Saves and validates provided data.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private async void SaveChangesClick(object sender, EventArgs e)
{
IStringValidator validator = new Validator();
if (!validator.IsNotEmpty(tbTitle.Text))
{
MessageBox.Show("Title can not be empty!");
return;
}
HttpGroupsRepository groupRepo = new HttpGroupsRepository();
currGroup.description = tbDesc.Text;
if (!validator.IsNotEmpty(tbTitle.Text))
{
MessageBox.Show("Group name can't be empty!","Error!",MessageBoxButtons.OK,MessageBoxIcon.Exclamation);
return;
}
currGroup.name = tbTitle.Text;
if (edit)
{
await UpdateUsers();
await groupRepo.EditOne(currGroup);
await Globals.UpdateCurrentUser();
this.Close();
}
else
{
var detailRepo = new HttpGroupDetailsRepository();
var newGroup = new GroupsViewModel()
{
created_at = DateTime.Now,
GroupDetails = currGroup.GroupDetails,
name = currGroup.name,
owner_id = Globals.CurrentUser.id,
description = currGroup.description
};
GroupsViewModel retGroup = await groupRepo.AddOne(newGroup); //we need it to get created id
currGroup.id = retGroup.id;
//adding users
await UpdateUsers();
await Globals.UpdateCurrentUser();
this.Close();
}
}
/// <summary>
/// Updates added members added to the database.
/// </summary>
/// <returns></returns>
private async Task UpdateUsers()
{
HttpGroupDetailsRepository repo = new HttpGroupDetailsRepository();
ICollection<GroupDetailsViewModel> listOfDetails = new List<GroupDetailsViewModel>();
var users = usersBindingSource.List.Cast<UsersViewModel>();
var isUser = users.Count(u => u.id == Globals.CurrentUser.id) == 0;
//checking if creator is added to the group
if (isUser) //if not add him and proper communicate
{
usersBindingSource.Add(Globals.CurrentUser);
MessageBox.Show("You removed yourself from the group, you were added to it automatically!","Warning",
MessageBoxButtons.OK,MessageBoxIcon.Information);
}
//adding new users
foreach (UsersViewModel user in usersBindingSource)
{
var newDetail = new GroupDetailsViewModel()
{
user_id = user.id,
group_id = currGroup.id
};
listOfDetails.Add(newDetail);
if (!(await repo.DetailExists(newDetail))) //if given connection does not exist then add it
{
var detailRepo = new HttpGroupDetailsRepository();
await detailRepo.AddOne(newDetail);
// currGroup.GroupDetails.Add(newDetail); //synchronize current group with db
}
}
HttpGroupsRepository groupsRepo = new HttpGroupsRepository();
var actualGroup = await groupsRepo.GetOne(currGroup.id); //actual group to synchronize from db
foreach (var detail in actualGroup.GroupDetails)
{
if (listOfDetails.Count(d => d.group_id == detail.group_id && d.user_id == detail.user_id) == 0) //if currGroup does not contain any of detail then delete it from db
{
await repo.DeleteOne(detail);
}
}
}
/// <summary>
/// Current user leaves the group.
/// </summary>
/// <returns></returns>
private async Task LeaveGroup()
{
var currDetail = currGroup.GroupDetails.FirstOrDefault(d => d.user_id == Globals.CurrentUser.id);
var repo = new HttpGroupDetailsRepository();
await repo.DeleteOne(currDetail);
}
/*-----------------------------UPDATING FUNCTIONS-----------------------------*/
/// <summary>
/// Updates repositories.
/// </summary>
private void UpdateRepositories() {
years = new HttpYearsRepository();
subjects = new HttpSubjectsRepository();
grades = new HttpSubjectDetailsRepository();
users = new HttpUsersRepository();
groups = new HttpGroupsRepository();
groupDetails = new HttpGroupDetailsRepository();
}
