public async Task <Response> AddSupplierProposal(SupplierProposalRequest supplierProposalRequest)
{
BidEntity bid = await _context.Bids.Where(b => b.Id == supplierProposalRequest.BidId).Include(b => b.CurrentProposals).FirstOrDefaultAsync().ConfigureAwait(false);
if (bid == null)
{
return(new Response()
{
IsOperationSucceeded = false, SuccessOrFailureMessage = BidNotFoundFailString
});
}
// TODO? validate supplier
SupplierProposalEntity new_proposal_ent = _mapper.Map <SupplierProposalEntity>(supplierProposalRequest);
bid.CurrentProposals.Add(new_proposal_ent);
bid.PotenialSuplliersCounter += 1;
try
{
_context.Bids.Update(bid);
await _context.SaveChangesAsync().ConfigureAwait(false);
}
catch (Exception ex)
{
return(new Response()
{
IsOperationSucceeded = false, SuccessOrFailureMessage = ex.Message
});
}
return(new Response()
{
IsOperationSucceeded = true, SuccessOrFailureMessage = this.getSuccessMessage()
});
}
public async Task <Response> GetProposalWithMaxVotes(string bidId)
{
BidEntity bid = await _context.Bids.Where(bid => bid.Id == bidId).Include(bid => bid.CurrentProposals).FirstOrDefaultAsync().ConfigureAwait(false);
if (bid == null)
{
return(new Response()
{
IsOperationSucceeded = false, SuccessOrFailureMessage = BidNotFoundFailString
});
}
SupplierProposalEntity chosenProposalEntity = bid.CurrentProposals.Where(proposal => proposal.MinimumUnits <= bid.UnitsCounter && proposal.ProposedPrice <= bid.MaxPrice).Aggregate(
(currWinner, x) => (currWinner == null || x.Votes > currWinner.Votes ? x : currWinner));
bid.ChosenProposal = chosenProposalEntity;
bid.PotenialSuplliersCounter = 1;
try
{
_context.Bids.Update(bid);
await _context.SaveChangesAsync().ConfigureAwait(false);
}
catch (Exception ex)
{
return(new Response()
{
IsOperationSucceeded = false, SuccessOrFailureMessage = ex.Message
});
}
return(new Response()
{
IsOperationSucceeded = true, SuccessOrFailureMessage = this.getSuccessMessage()
});
}
public async Task <Response> DeleteSupplierProposal(string bidId, string supplierId)
{
BidEntity bid = await _context.Bids.Where(b => b.Id == bidId).Include(b => b.CurrentProposals).FirstOrDefaultAsync().ConfigureAwait(false);
if (bid == null)
{
return(new Response()
{
IsOperationSucceeded = false, SuccessOrFailureMessage = BidNotFoundFailString
});
}
SupplierProposalEntity proposal = bid.CurrentProposals.Find(p => p.SupplierId == supplierId);
if (proposal == null)
{
return(new Response()
{
IsOperationSucceeded = false, SuccessOrFailureMessage = ProposalNotFoundFailString
});
}
bid.CurrentProposals.Remove(proposal);
bid.PotenialSuplliersCounter--;
_context.Set <SupplierProposalEntity>().Remove(proposal);
try
{
_context.Bids.Update(bid);
await _context.SaveChangesAsync().ConfigureAwait(false);
}
catch (Exception ex)
{
return(new Response()
{
IsOperationSucceeded = false, SuccessOrFailureMessage = ex.Message
});
}
return(new Response()
{
IsOperationSucceeded = true, SuccessOrFailureMessage = this.getSuccessMessage()
});
}
public async Task <Response> VoteForSupplier(VotingRequest votingRequest)
{
BidEntity bid = await _context.Bids.Where(b => b.Id == votingRequest.BidId).Include(b => b.CurrentProposals).Include(b => b.CurrentParticipancies).FirstOrDefaultAsync().ConfigureAwait(false);
if (bid == null)
{
return(new Response()
{
IsOperationSucceeded = false, SuccessOrFailureMessage = BidNotFoundFailString
});
}
ParticipancyEntity participancy = bid.CurrentParticipancies.Where(p => p.BuyerId == votingRequest.BuyerId).FirstOrDefault();
if (participancy == null)
{
return(new Response()
{
IsOperationSucceeded = false, SuccessOrFailureMessage = $"Buyer {votingRequest.BuyerId} is not part of the bids buyers."
});
}
else if (participancy.HasVoted)
{
// TODO enable change after vote
return(new Response()
{
IsOperationSucceeded = false, SuccessOrFailureMessage = $"Buyer {votingRequest.BuyerId} has already voted"
});
}
SupplierProposalEntity proposal = bid.CurrentProposals.Where(p => p.SupplierId == votingRequest.VotedSupplierId).FirstOrDefault();
if (proposal == null)
{
return(new Response()
{
IsOperationSucceeded = false, SuccessOrFailureMessage = $"no proposal for supplier: {votingRequest.VotedSupplierId} has found for the bid."
});
}
participancy.HasVoted = true;
proposal.Votes += 1;
try
{
_context.Set <ParticipancyEntity>().Update(participancy);
_context.Set <SupplierProposalEntity>().Update(proposal);
await _context.SaveChangesAsync().ConfigureAwait(false);
}
catch (Exception ex)
{
return(new Response()
{
IsOperationSucceeded = false, SuccessOrFailureMessage = ex.Message
});
}
return(new Response()
{
IsOperationSucceeded = true, SuccessOrFailureMessage = this.getSuccessMessage()
});
}