101 lines
2.7 KiB
Go
101 lines
2.7 KiB
Go
package keeper
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import (
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"cosmos-test/x/cosmostest/math"
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"cosmos-test/x/cosmostest/memdb"
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"math/big"
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"time"
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"github.com/cosmos/cosmos-sdk/types"
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sdk "github.com/cosmos/cosmos-sdk/types"
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"github.com/pkg/errors"
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)
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func (k *Keeper) AuctionIsExpired(ctx types.Context, auctionId string) (bool, error) {
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auction, found := k.GetAuction(ctx, auctionId)
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// make sure the auction exists on-chain
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if !found {
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return true, errors.Errorf("auction %s not found", auctionId)
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}
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return uint64(ctx.BlockHeight()) >= auction.Deadline, nil
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}
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func (k *Keeper) FinalizeExpiredAuctions(ctx types.Context) {
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memdb.BidDB.ForEachAuction(func(auctionId string) error {
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auction, found := k.GetAuction(ctx, auctionId)
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// make sure the auction exists on-chain
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if !found {
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return errors.Errorf("auction %s not found", auctionId)
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}
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if uint64(ctx.BlockHeight()) >= auction.Deadline {
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var err error
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auction.Best, err = memdb.BidDB.GetLowestBid(auctionId)
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if err != nil {
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return errors.Errorf("could not get highest bid for auction %s: %s", auctionId, err)
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}
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// Remainig Unpaid: Full bid amount
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auction.Remaining = auction.Best.Amount
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// clear auction
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memdb.BidDB.ClearAuction(auctionId)
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// pay out remainder to auction creator
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ceiling := new(big.Int)
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ceiling.SetString(auction.Ceiling, 10)
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lowestBidAmt := new(big.Int)
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lowestBidAmt.SetString(auction.Best.Amount, 10)
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// only pay out if there is a difference
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if ceiling.Cmp(lowestBidAmt) == 1 {
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amtRemaining := new(big.Int)
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amtRemaining.Sub(ceiling, lowestBidAmt)
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coins := sdk.NewCoins(sdk.Coin{
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Amount: sdk.NewIntFromBigInt(amtRemaining),
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Denom: auction.Denom,
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})
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k.bank.SendCoinsFromModuleToAccount(ctx, "cosmostest", sdk.AccAddress(auction.Owner), coins)
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}
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// end auction
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k.SetAuction(ctx, auction)
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}
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return nil
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})
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}
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func (k *Keeper) PayAuctionAmountDue(ctx types.Context, auctionId string) error {
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auction, found := k.GetAuction(ctx, auctionId)
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if !found {
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return errors.Errorf("auction %s not found", auctionId)
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}
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blockTime := ctx.BlockTime()
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deadline := time.Unix(int64(auction.Deadline), 0)
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if blockTime.After(deadline) {
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return nil
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} else {
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amtTotal := new(big.Int)
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amtTotal.SetString(auction.Best.Amount, 10)
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amtRemaining := new(big.Int)
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amtTotal.SetString(auction.Remaining, 10)
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amt, err := math.CalcAmountVestableLinear(
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amtTotal,
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amtRemaining,
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ctx.BlockTime(),
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time.Unix(int64(auction.LeaseStart), 0),
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time.Unix(int64(auction.LeaseEnd), 0),
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)
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if err != nil {
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return err
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}
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coins := sdk.NewCoins(sdk.NewCoin(auction.Denom, sdk.NewIntFromBigInt(amt)))
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err = k.bank.SendCoinsFromModuleToAccount(ctx, "cosmostest", sdk.AccAddress(auction.Best.Owner), coins)
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return err
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}
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}
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