private void PrepareChanges(IAuditContext ac)
{
foreach (var item in Changes.Where(x => x.State == EntityState.Added))
{
Type type = item.Entity.GetType();
List<string> keyValues = new List<string>();
foreach (var k in type.GetEntityProperties(true))
{
var key = k.GetValue(item.Entity);
var pv = item.Values.FirstOrDefault(x => x.Name == k.Name);
if (pv == null)
{
pv = new CFieldValue { Name = k.Name };
item.Values.Add(pv);
}
pv.NewValue = key;
keyValues.Add(key.ToString());
}
item.Key = string.Join(",", keyValues);
}
List<CLinkValue> links = new List<CLinkValue>();
foreach (var change in Changes)
{
foreach (var item in change.Values)
{
foreach (var fk in item.Property.FKProperties)
{
CLinkValue v = new CLinkValue();
v.ObjectName = fk.EntityName;
var v1 = item.NewValue ?? item.OldValue;
if (v1 == null)
continue;
v.Key = v1.ToString();
if (string.IsNullOrWhiteSpace(v.Key))
continue;
v.ChildObject = item.Property.Property.DeclaringType.Name;
v.ChildKey = change.Key;
v.Operation = change.State.ToString();
links.Add(v);
}
}
}
foreach (var item in links.GroupBy(x => x.ObjectName))
{
string name = item.Key;
foreach (var k in item.GroupBy(x => x.Key).ToList())
{
string key = k.Key;
Change c = Changes.FirstOrDefault(x => x.ObjectName == name && x.Key == key);
if (c != null)
{
c.Links.AddRange(k);
}
else
{
c = new Change(EntityState.Modified);
c.ObjectName = name;
c.Key = key;
c.Links.AddRange(k);
Changes.Add(c);
}
}
}
JavaScriptSerializer sr = new JavaScriptSerializer();
foreach (var change in Changes)
{
if (change.Entity is IAuditIgnore)
continue;
IAuditItem item = ac.CreateNew();
item.Action = change.State.ToString();
item.AuditTime = DateTime.UtcNow;
//item.IPAddress = ac.GetIPAddress();
//item.Username = ac.GetUsername();
item.TableKey = change.Key;
item.TableName = change.ObjectName;
item.Fields = sr.Serialize(change.Values);
item.Links = sr.Serialize(change.Links);
//ac.AddAudit(item);
}
}
public void BeginAudit()
{
Changes = new List<Change>();
// add everything what was added first...
foreach (var item in Added)
{
var c = new Change(item.Entity, item.State,null);
Changes.Add(c);
}
foreach (var item in Modified)
{
var c = new Change(item.Entity, item.State, item.OriginalValues);
Changes.Add(c);
}
foreach (var item in Deleted)
{
var c = new Change(item.Entity, item.State,null);
Changes.Add(c);
}
}