public async Task <ActionResult> AddMemberToGroup(SingleGroupMemberDTO dto)
{
//Validate DTO
if (!dto.Validate())
{
return(BadRequest("All fields must contain valid values"));
}
//Prevent duplicate
if ((await _context.GroupAssignments.FindAsync(dto.GroupID, dto.UserUsername)) is not null)
{
return(Conflict("Assignment already exists"));
}
if (!await _context.Groups.AnyAsync(group => group.GroupID == dto.GroupID &&
group.Course.User.Username == GetUsername()))
{
return(BadRequest("Either group does not exist or the group is owned by another user"));
}
await _context.GroupAssignments
.AddAsync(new GroupAssignment()
{
GroupID = dto.GroupID, UserUsername = dto.UserUsername.ToLower()
});
await _context.SaveChangesAsync();
// ReSharper disable once Mvc.ActionNotResolved
return(CreatedAtAction("members", new { groupid = dto.GroupID }));
}
public async Task <ActionResult> RemoveMemberFromGroup(SingleGroupMemberDTO dto)
{
//Validate DTO
if (!dto.Validate())
{
return(BadRequest("All fields must contain valid values"));
}
//Ensure Existence
var assignment = await _context.GroupAssignments.FindAsync(dto.GroupID, dto.UserUsername);
if (assignment is null)
{
return(NotFound("No Such Assignment"));
}
if (
!_context.Groups.Any(group => @group.GroupID == dto.GroupID &&
@group.Course.User.Username == GetUsername())
)
{
return(BadRequest("Either group does not exist or the group is not on a course owned by you"));
}
_context.GroupAssignments.Remove(assignment);
await _context.SaveChangesAsync();
return(NoContent());
}