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