public void UpdateCardPosition(UpdateCardPositionDto updateCardPositionDto)
{
using (var db = new PGSBoardContext())
{
if (updateCardPositionDto.ListId == updateCardPositionDto.OldListId) // first case when you sort cart in the same list
{
var currentListCard = db.Cards.Where(card => card.ListId == updateCardPositionDto.ListId).ToList(); // take whole card from list, just one call to db
var cardToUpdate = currentListCard.Single(card => card.Id == updateCardPositionDto.CardId); // take card to Update (card which we drage and drop)
var cardChangedAutomatically = // select card which have to change position after our drag and drop move
currentListCard.Single(card => card.PositionCardId == updateCardPositionDto.PositionCard);
cardChangedAutomatically.PositionCardId = cardChangedAutomatically.PositionCardId > cardToUpdate.PositionCardId // 2 cases: First, if you take card from up to down then position card which have to change will be smaller about -1
? cardChangedAutomatically.PositionCardId - 1 // Second, if you take card from down to up, then position card which have to change will be larger about +1
: cardChangedAutomatically.PositionCardId + 1;
cardToUpdate.PositionCardId = updateCardPositionDto.PositionCard; // update position card which we drag and drop
db.SaveChanges();
}
else // second case when you sort( drag some card) to another list
{
var cards = db.Cards.Where(card => card.ListId == updateCardPositionDto.ListId || card.ListId == updateCardPositionDto.OldListId).ToList(); //take card from two lists
var cardToUpdate = cards.Single(card => card.Id == updateCardPositionDto.CardId); // take our card which we drag and drop
var prevCardsList =
cards
.Where(card => card.ListId == updateCardPositionDto.OldListId && //take old list, where was our card
card.PositionCardId > cardToUpdate.PositionCardId && // take all card which had larger position
card.Id != updateCardPositionDto.CardId).ToList(); // don't take card which we drag and drop
var nextCardsList =
cards
.Where(card => card.ListId == updateCardPositionDto.ListId && // take new list, where we drop our card
card.PositionCardId >= updateCardPositionDto.PositionCard).ToList();
foreach (var prevCard in prevCardsList)
{
prevCard.PositionCardId = prevCard.PositionCardId - 1; // old list, reduce position about -1
}
foreach (var nextCard in nextCardsList)
{
nextCard.PositionCardId = nextCard.PositionCardId + 1; // new list increase position card about 1
}
cardToUpdate.ListId = updateCardPositionDto.ListId;
cardToUpdate.PositionCardId = updateCardPositionDto.PositionCard; //update dropped position card
db.SaveChanges();
}
}
}
public int DeleteCard(DeleteCardDto dto)
{
using (var db = new PGSBoardContext())
{
var cardToRemove = db.Cards.Single(card => card.Id == dto.CardId);
db.Cards.Remove(cardToRemove);
return(db.SaveChanges() == 1 ? dto.CardId : 0);
}
}
public int DeleteList(DeleteListDto deleteListDto)
{
using (var db = new PGSBoardContext())
{
var listToRemove = db.Lists.Single(list => list.Id == deleteListDto.ListId);
db.Lists.Remove((listToRemove));
return(db.SaveChanges() == 1 ? deleteListDto.ListId : 0);
}
}
public int DeleteBoard(DeleteBoardDto deleteBoardDto)
{
using (var db = new PGSBoardContext())
{
var boardToRemove = db.Boards.Single(board => board.Id == deleteBoardDto.Id);
db.Boards.Remove(boardToRemove);
return(db.SaveChanges() == 1 ? deleteBoardDto.Id : 0);
}
}
public void AddList(CreateListDto dto)
{
var list = new List
{
Name = dto.Name,
BoardId = dto.BoardId
};
using (var db = new PGSBoardContext())
{
db.Lists.Add(list);
db.SaveChanges();
}
}
public void AddBoard(CreateBoardFormDto dto)
{
var board = new Board
{
Name = dto.Name,
Description = dto.Description
};
using (var db = new PGSBoardContext())
{
db.Boards.Add(board);
db.SaveChanges();
}
}
public void AddCard(CreateCardDto dto)
{
var card = new Card
{
Name = dto.Name,
Description = dto.Description,
ListId = dto.ListId
};
using (var db = new PGSBoardContext())
{
db.Cards.Add(card);
db.SaveChanges();
}
}
public void ChangePositionCardBeforeDelete(DeleteCardDto dto) // reduce position cards after delete
{
using (var db = new PGSBoardContext())
{
var cards = db.Cards.Where(card => card.ListId == dto.ListId || card.Id == dto.CardId).ToList();
var cardToDelete = cards.Single(card => card.Id == dto.CardId);
var cardToUpdate = cards.Where(card => card.Id != dto.CardId && card.PositionCardId > cardToDelete.PositionCardId).ToList();
foreach (var card in cardToUpdate)
{
card.PositionCardId = card.PositionCardId - 1;
}
db.SaveChanges();
}
}
