gpu-compute-chain/x/cosmostest/keeper/msg_server_new_bid.go

79 lines
2.1 KiB
Go

package keeper
import (
"context"
"fmt"
"math/big"
"reflect"
"cosmos-test/x/cosmostest/memdb"
"cosmos-test/x/cosmostest/types"
sdk "github.com/cosmos/cosmos-sdk/types"
)
func (k msgServer) NewBid(goCtx context.Context, msg *types.MsgNewBid) (*types.MsgNewBidResponse, error) {
ctx := sdk.UnwrapSDKContext(goCtx)
auction, found := k.Keeper.GetAuction(ctx, msg.AuctionIndex)
if !found {
return nil, fmt.Errorf("didn't find auction of index %s", msg.AuctionIndex)
}
auctionExpired, err := k.Keeper.AuctionIsExpired(ctx, msg.AuctionIndex)
if err != nil {
return nil, fmt.Errorf("error while checking auction %s expiry status: %s", msg.AuctionIndex, err)
}
if auctionExpired {
return nil, fmt.Errorf("auction %s is expired", msg.AuctionIndex)
}
ok := false
amt := new(big.Int)
amt, ok = amt.SetString(msg.Amount, 10)
if !ok {
return nil, fmt.Errorf("failed to convert `%s` to a large integer", msg.Amount)
}
if amt.Sign() != 1 {
return nil, fmt.Errorf("bid amount must be greater than 0")
}
ceiling := new(big.Int)
ceiling.SetString(auction.Ceiling, 10)
if amt.Cmp(ceiling) == 1 {
return nil, fmt.Errorf("bid amount cannot be greater than auction price ceiling (%s)", auction.Ceiling)
}
lowestBid, err := memdb.BidDB.GetLowestBid(msg.AuctionIndex)
// we manually handle KeyNotFound in GetHighestBid, so should return (nil, nil) if not found
if err != nil {
return nil, fmt.Errorf("failed to get lowest bid: %s", reflect.TypeOf(err))
}
if lowestBid != nil {
amtPrev := new(big.Int)
amtPrev, ok = amtPrev.SetString(lowestBid.Amount, 10)
if !ok { // this should have been checked before, but whatever
return nil, fmt.Errorf("failed to convert max bid (%s) to a large integer", msg.Amount)
}
if amt.Cmp(amtPrev) != -1 {
return nil, fmt.Errorf("bid amount must be less than current lowest bid (%s)", amtPrev)
}
}
bid := &types.Bid{
Amount: msg.Amount,
Owner: msg.Creator,
}
if err := memdb.BidDB.AddBid(msg.AuctionIndex, bid); err != nil {
return nil, fmt.Errorf("failed to add bid: %s", err)
}
// auction.Bids = append(auction.Bids, bid)
// k.Keeper.SetAuction(ctx, auction)
return &types.MsgNewBidResponse{}, nil
}