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keeper.go
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keeper.go
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package cool
import (
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/x/bank"
)
// Keeper - handlers sets/gets of custom variables for your module
type Keeper struct {
ck bank.CoinKeeper
storeKey sdk.StoreKey // The (unexposed) key used to access the store from the Context.
}
// NewKeeper - Returns the Keeper
func NewKeeper(key sdk.StoreKey, bankKeeper bank.CoinKeeper) Keeper {
return Keeper{bankKeeper, key}
}
// Key to knowing the trend on the streets!
var trendKey = []byte("TrendKey")
// GetTrend - returns the current cool trend
func (k Keeper) GetTrend(ctx sdk.Context) string {
store := ctx.KVStore(k.storeKey)
bz := store.Get(trendKey)
return string(bz)
}
// Implements sdk.AccountMapper.
func (k Keeper) setTrend(ctx sdk.Context, newTrend string) {
store := ctx.KVStore(k.storeKey)
store.Set(trendKey, []byte(newTrend))
}
// CheckTrend - Returns true or false based on whether guessedTrend is currently cool or not
func (k Keeper) CheckTrend(ctx sdk.Context, guessedTrend string) bool {
if guessedTrend == k.GetTrend(ctx) {
return true
}
return false
}
// InitGenesis - store the genesis trend
func (k Keeper) InitGenesis(ctx sdk.Context, data CoolGenesis) error {
k.setTrend(ctx, data.Trend)
return nil
}