private void WithChildEntityInternal <T2>(Expression <Func <T, T2> > expression, AuditlogBuilder <T2> builder)
{
var propertyName = ((MemberExpression)expression.Body).Member.Name;
T2 currentValue = _current != null?expression.Compile()(_current) : default;
T2 previousValue = _previous != null?expression.Compile()(_previous) : default;
var auditLogItems = builder.Build(currentValue, previousValue);
if (auditLogItems?.Count == 0)
{
return;
}
var status = GetAuditlogStatus(currentValue, previousValue);
if (status == AuditlogStatus.Unchanged)
{
// Set status to updated because a child has changes
status = AuditlogStatus.Updated;
}
var item = new AuditlogItem
{
PropertyName = propertyName,
Status = status,
Type = AuditlogType.None,
AuditlogItems = auditLogItems
};
_auditlogItems.Add(item);
}
private void WithPropertyInternal <T2>(Expression <Func <T, T2> > expression, AuditlogType type, Func <T2, string> formatter, string propertyName = null)
{
propertyName ??= GetPropertyName(expression);
T2 currentValue = _current != null?expression.Compile()(_current) : default;
T2 previousValue = _previous != null?expression.Compile()(_previous) : default;
var status = GetAuditlogStatus(currentValue, previousValue);
if (status != AuditlogStatus.Unchanged)
{
var item = new AuditlogItem
{
PropertyName = propertyName,
Type = type,
Status = status,
CurrentValueAsString = formatter(currentValue),
PreviousValueAsString = formatter(previousValue),
};
_auditlogItems.Add(item);
}
}
private void WithChildEntityCollectionInternal <T2, T3>(Expression <Func <T, T2> > expression, Expression <Func <T3, string> > collectionItemPropertyname, AuditlogBuilder <T3> builder) where T2 : IEnumerable <T3> where T3 : IEntity
{
var propertyName = ((MemberExpression)expression.Body).Member.Name;
T2 currentValue = _current != null?expression.Compile()(_current) : default;
T2 previousValue = _previous != null?expression.Compile()(_previous) : default;
var status = GetAuditlogStatus(currentValue, previousValue);
currentValue ??= (T2)Activator.CreateInstance(typeof(List <>).MakeGenericType(typeof(T3)));
previousValue ??= (T2)Activator.CreateInstance(typeof(List <>).MakeGenericType(typeof(T3)));
var updated = currentValue
.Join(previousValue, x => x.Id, x => x.Id, (current, previous) =>
{
return(new AuditlogPair <T3>
{
Id = current.Id,
CurrentValue = current,
PreviousValue = previous
});
});
var added = currentValue.Where(x => !previousValue.Any(y => y.Id == x.Id))
.Select(x => new AuditlogPair <T3>
{
Id = x.Id,
CurrentValue = x
});
var removed = previousValue.Where(x => !currentValue.Any(y => y.Id == x.Id))
.Select(previous => new AuditlogPair <T3>
{
Id = previous.Id,
PreviousValue = previous
});
var auditlogPairs = updated.Concat(added).Concat(removed);
var item = new AuditlogItem
{
PropertyName = propertyName,
Status = status,
Type = AuditlogType.None,
AuditlogItems = new List <AuditlogItem>()
};
var i = 0;
foreach (var auditlogPair in auditlogPairs)
{
var auditLogItems = builder.Build(auditlogPair.CurrentValue, auditlogPair.PreviousValue);
if (auditLogItems.Count > 0)
{
i++;
var auditlogPairStatus = GetAuditlogStatus(auditlogPair.CurrentValue, auditlogPair.PreviousValue);
var item2 = new AuditlogItem
{
PropertyName = collectionItemPropertyname != null
? collectionItemPropertyname.Compile()(auditlogPair.CurrentValue ?? auditlogPair.PreviousValue).ToString()
: i.ToString(),
Status = auditlogPairStatus,
Type = AuditlogType.None,
AuditlogItems = auditLogItems
};
item.AuditlogItems.Add(item2);
}
}
if (item.AuditlogItems.Count == 0)
{
return;
}
_auditlogItems.Add(item);
}