public void Migrate(IEnumerable <LocaleResourceEntry> entries, bool updateTouchedResources = false)
{
Guard.ArgumentNotNull(() => entries);
if (!entries.Any() || !_languages.Any())
{
return;
}
using (var scope = new DbContextScope(_ctx, autoDetectChanges: false))
{
var langMap = _languages.ToDictionarySafe(x => x.UniqueSeoCode.EmptyNull().ToLower());
var toDelete = new List <LocaleStringResource>();
var toUpdate = new List <LocaleStringResource>();
var toAdd = new List <LocaleStringResource>();
// remove all entries with invalid lang identifier
var invalidEntries = entries.Where(x => x.Lang != null && !langMap.ContainsKey(x.Lang.ToLower()));
if (invalidEntries.Any())
{
entries = entries.Except(invalidEntries);
}
foreach (var lang in langMap)
{
foreach (var entry in entries.Where(x => x.Lang == null || langMap[x.Lang.ToLower()].Id == lang.Value.Id))
{
bool isLocal;
var db = GetResource(entry.Key, lang.Value.Id, toAdd, out isLocal);
if (db == null && entry.Value.HasValue() && !entry.UpdateOnly)
{
// ADD action
toAdd.Add(new LocaleStringResource {
LanguageId = lang.Value.Id, ResourceName = entry.Key, ResourceValue = entry.Value
});
}
if (db == null)
{
continue;
}
if (entry.Value == null)
{
// DELETE action
if (isLocal)
{
toAdd.Remove(db);
}
else
{
toDelete.Add(db);
}
}
else
{
if (isLocal)
{
db.ResourceValue = entry.Value;
continue;
}
// UPDATE action
if (updateTouchedResources || !db.IsTouched.GetValueOrDefault())
{
db.ResourceValue = entry.Value;
toUpdate.Add(db);
if (toDelete.Contains(db))
{
toDelete.Remove(db);
}
}
}
}
}
// add new resources to context
_resources.AddRange(toAdd);
// remove deleted resources
_resources.RemoveRange(toDelete);
// update modified resources
toUpdate.Each(x => _ctx.Entry(x).State = System.Data.Entity.EntityState.Modified);
// save now
int affectedRows = _ctx.SaveChanges();
}
}