public static List <TopicViewModel> CreateTopicViewModels(List <Topic> topics,
IRoleService roleService,
MembershipRole usersRole,
MembershipUser loggedOnUser,
List <Group> allowedGroups,
Settings settings,
IPostService postService,
INotificationService topicNotificationService,
IPollService pollService,
IVoteService voteService,
IFavouriteService favouriteService)
{
// Get all topic Ids
var topicIds = topics.Select(x => x.Id).ToList();
// Gets posts for topics
var posts = postService.GetPostsByTopics(topicIds, allowedGroups);
var groupedPosts = posts.ToLookup(x => x.Topic.Id);
// Get all permissions
var permissions = GetPermissionsForTopics(topics, roleService, usersRole);
// Get all votes
var votesGrouped = voteService.GetVotesByTopicsGroupedIntoPosts(topicIds);
// Favourites grouped
var favouritesGrouped = favouriteService.GetByTopicsGroupedIntoPosts(topicIds);
// Create the view models
var viewModels = new List <TopicViewModel>();
foreach (var topic in topics)
{
var id = topic.Id;
var permission = permissions[topic.Group];
var topicPosts = groupedPosts.Contains(id) ? groupedPosts[id].ToList() : new List <Post>();
var votes = new Dictionary <Guid, List <Vote> >();
if (votesGrouped.ContainsKey(id))
{
votes = votesGrouped[id];
}
var favourites = new Dictionary <Guid, List <Favourite> >();
if (favouritesGrouped.ContainsKey(id))
{
favourites = favouritesGrouped[id];
}
var postIds = topicPosts.Select(x => x.Id).ToList();
viewModels.Add(CreateTopicViewModel(topic, permission, topicPosts, postIds, null, null, null, null, loggedOnUser,
settings, topicNotificationService, pollService, votes, favourites));
}
return(viewModels);
}