refactor: remove usage of global basedenom

CHANGELOG.md

@@ -184,6 +184,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 * (x/mint) [#18283](https://github.com/cosmos/cosmos-sdk/pull/18283) Mint module was moved to its own go.mod `cosmossdk.io/x/mint`
 * (x/consensus) [#18041](https://github.com/cosmos/cosmos-sdk/pull/18041) `ToProtoConsensusParams()` returns an error 
 * (x/slashing) [#18115](https://github.com/cosmos/cosmos-sdk/pull/18115) `NewValidatorSigningInfo` takes strings instead of `sdk.AccAddress`
+* (types) [#18268](https://github.com/cosmos/cosmos-sdk/pull/18268) Remove global setting of basedenom. Use the staking module parameter instead
 
 ### CLI Breaking Changes
 

types/coin.go

@@ -881,7 +881,8 @@ func ParseCoinNormalized(coinStr string) (coin Coin, err error) {
 		return Coin{}, err
 	}
 
-	coin, _ = NormalizeDecCoin(decCoin).TruncateDecimal()
+	coin, _ = normalizeDecCoin(decCoin).TruncateDecimal()
+
 	return coin, nil
 }
 
@@ -900,3 +901,42 @@ func ParseCoinsNormalized(coinStr string) (Coins, error) {
 	}
 	return NormalizeCoins(coins), nil
 }
+
+// ----------------------------------------------------------------------------
+// Functions used for testing purposes.
+
+// normalizeDecCoin try to convert a decimal coin to the smallest unit registered,
+// returns original one if failed.
+func normalizeDecCoin(coin DecCoin) DecCoin {
+	newCoin, err := convertDecCoin(coin)
+	if err != nil {
+		return coin
+	}
+	return newCoin
+}
+
+// NormalizeCoins normalize and truncate a list of decimal coins
+func NormalizeCoins(coins []DecCoin) Coins {
+	if coins == nil {
+		return nil
+	}
+	result := make([]Coin, 0, len(coins))
+
+	for _, coin := range coins {
+		newCoin, _ := normalizeDecCoin(coin).TruncateDecimal()
+		result = append(result, newCoin)
+	}
+
+	return result
+}
+
+// ConvertDecCoin attempts to convert a decimal coin to a given denomination. If the given
+// denomination is invalid or if neither denomination is registered, an error
+// is returned.
+func convertDecCoin(coin DecCoin) (DecCoin, error) {
+	if err := ValidateDenom(coin.Denom); err != nil {
+		return DecCoin{}, err
+	}
+
+	return NewDecCoinFromDec(coin.Denom, coin.Amount), nil
+}