public static int BlockComparer(LawsuitBlock a, LawsuitBlock b)
{
return(a.LawsuitBlockWeight.CompareTo(b.LawsuitBlockWeight));
}
public void Action(LawsuitBlockData data)
{
if (data.Type == LawsuitBlockData.Types.Add)
{
LawsuitBlock pair = new LawsuitBlock();
pair.LawsuitId = data.LawsuitId;
pair.BlockId = data.BlockId;
if (DB.LawsuitBlocks.Where(i => i.LawsuitId == pair.LawsuitId).ToList().Count > 0)
{
pair.LawsuitBlockWeight = DB.LawsuitBlocks.Where(i => i.LawsuitId == pair.LawsuitId).Select(i => i.LawsuitBlockWeight).Max() + 1;
}
else
{
pair.LawsuitBlockWeight = 0;
}
DB.LawsuitBlocks.Add(pair);
Utils.TrySaveChanges(DB, Defines.SaveChangesCases.Add);
}
else if (data.Type == LawsuitBlockData.Types.ChangeWeight)
{
int lawsuitId = data.LawsuitId;
int source = data.BlockId;
int target = data.TargetBlockId;
LawsuitBlock sourceItem = null;
int targetWeight = 0;
List <LawsuitBlock> list = DB.LawsuitBlocks.Select(i => i).Where(i => i.LawsuitId == lawsuitId).ToList();
list.Sort(Utils.BlockComparer);
for (int i = 0; i < list.Count; i++)
{
if (list[i].BlockId == target)
{
targetWeight = list[i].LawsuitBlockWeight;
while (list[i].BlockId != source)
{
list[i].LawsuitBlockWeight = ++(list[i].LawsuitBlockWeight);
DB.Entry(list[i]).State = EntityState.Modified;
i++;
}
list[i].LawsuitBlockWeight = targetWeight;
DB.Entry(list[i]).State = EntityState.Modified;
Utils.TrySaveChanges(DB, Defines.SaveChangesCases.Edit);
return;
}
if (list[i].BlockId == source)
{
sourceItem = list[i];
i++;
while (list[i].BlockId != target)
{
list[i].LawsuitBlockWeight = --(list[i].LawsuitBlockWeight);
DB.Entry(list[i]).State = EntityState.Modified;
i++;
}
sourceItem.LawsuitBlockWeight = list[i].LawsuitBlockWeight;
DB.Entry(sourceItem).State = EntityState.Modified;
list[i].LawsuitBlockWeight = --(list[i].LawsuitBlockWeight);
DB.Entry(list[i]).State = EntityState.Modified;
Utils.TrySaveChanges(DB, Defines.SaveChangesCases.Edit);
return;
}
}
}
else
{
LawsuitBlock pair = DB.LawsuitBlocks.Select(i => i).Where(i => i.BlockId == data.BlockId && i.LawsuitId == data.LawsuitId).First();
DB.LawsuitBlocks.Remove(pair);
Utils.TrySaveChanges(DB, Defines.SaveChangesCases.Remove);
}
}