53 lines
1.2 KiB
Go
53 lines
1.2 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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"cosmos-test/x/cosmostest/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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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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amtPrev := big.NewInt(0)
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if len(auction.Bids) > 0 {
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// shouldn't need to check validity, because we assume it's checked
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// before approving & inserting the bid
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latestBid := auction.Bids[len(auction.Bids)-1]
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amtPrev, _ = amtPrev.SetString(latestBid.Amount, 10)
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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 greater than largest bid")
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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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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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