public static void Seed(WebsiteDataContext context)
{
// Check whether database has already got data in it.
Config cfg = context.Config.Find(1);
if (cfg != null)
{
return;
}
//------------------------------------------------------------------
StreamReader mediaJson = new StreamReader(Path.Combine(basePath, "media.json"));
List <MediaSeeder> media = JsonConvert.DeserializeObject <List <MediaSeeder> >(mediaJson.ReadToEnd());
mediaJson.Close();
List <ImageMedia> images = media.Where(m => m.MediaType.Category == MediaCategory.Image).Select(m => (ImageMedia)m.ToBaseMedia()).ToList();
List <AudioMedia> audios = media.Where(m => m.MediaType.Category == MediaCategory.Audio).Select(m => (AudioMedia)m.ToBaseMedia()).ToList();
context.AddRangeWithIdentityInsert(images, "Media");
context.AddRangeWithIdentityInsert(audios, "Media");
//------------------------------------------------------------------
StreamReader categoriesJson = new StreamReader(Path.Combine(basePath, "categories.json"));
List <FactFileCategory> categories = JsonConvert.DeserializeObject <List <FactFileCategory> >(categoriesJson.ReadToEnd());
categoriesJson.Close();
context.AddRangeWithIdentityInsert(categories, "FactFileCategories");
//-----------------------------------------------------------------
StreamReader entriesJson = new StreamReader(Path.Combine(basePath, "entries.json"));
List <EntrySeeder> entries = JsonConvert.DeserializeObject <List <EntrySeeder> >(entriesJson.ReadToEnd());
entriesJson.Close();
context.AddRangeWithIdentityInsert(entries.Select(e => e.ToFactFileEntry()), "FactFileEntries");
context.AddRange(entries.Select(e => e.GetFactFileEntryImages())?.Aggregate((l1, l2) => l2 != null ? l1.Concat(l2).ToList() : l1));
context.AddRange(entries.Select(e => e.GetFactFileNuggets())?.Aggregate((l1, l2) => l2 != null ? l1.Concat(l2).ToList() : l1));
//------------------------------------------------------------------
StreamReader tracksJson = new StreamReader(Path.Combine(basePath, "tracks.json"));
List <TrackSeeder> tracks = JsonConvert.DeserializeObject <List <TrackSeeder> >(tracksJson.ReadToEnd());
tracksJson.Close();
context.AddRangeWithIdentityInsert(tracks.Select(t => t.ToTrack()), "Tracks");
context.AddRangeWithIdentityInsert(tracks.Select(t => t.GetActivities())?.Aggregate((l1, l2) => l2 != null ? l1.Concat(l2).ToList() : l1), "Activities");
context.AddRange(tracks.Select(t => t.GetActivityImages())?.Aggregate((l1, l2) => l2 != null ? l1.Concat(l2).ToList() : l1));
//-------------------------------------------------------------------
StreamReader quizzesJson = new StreamReader(Path.Combine(basePath, "quizzes.json"));
List <QuizSeeder> quizzes = JsonConvert.DeserializeObject <List <QuizSeeder> >(quizzesJson.ReadToEnd());
quizzesJson.Close();
context.AddRangeWithIdentityInsert(quizzes.Select(q => q.ToQuiz()), "Quizzes");
// Intially we cannot save correct answer IDs due to foreign key constraint. Will save without and add later.
context.AddRangeWithIdentityInsert(quizzes.Select(q => q.GetQuestions(includeCorrectAnswers: false))?.Aggregate((l1, l2) => l2 != null ? l1.Concat(l2).ToList() : l1), "QuizQuestions");
context.AddRangeWithIdentityInsert(quizzes.Select(q => q.GetAnswers())?.Aggregate((l1, l2) => l2 != null ? l1.Concat(l2).ToList() : l1), "QuizAnswers");
//--------------------------------------------------------------------
context.Add(new Config {
MasterUnlockCode = "quizmaster"
});
context.SaveChanges();
// Detach all entries from the tracker so that we can update questions with their correct answer IDs.
List <EntityEntry> entityEntries = context.ChangeTracker.Entries().ToList();
foreach (var entry in entityEntries)
{
entry.State = EntityState.Detached;
}
context.UpdateRange(quizzes.Select(q => q.GetQuestions(includeCorrectAnswers: true))?.Aggregate((l1, l2) => l2 != null ? l1.Concat(l2).ToList() : l1));
// Save the database with the added correct answer IDs.
context.SaveChanges();
}