coins.gno

  1package common
  2
  3import "chain/banker"
  4
  5// IsGNOTPath checks if the given path is either native gnot or wrapped ugnot path.
  6//
  7// Parameters:
  8//   - path: token path to check
  9//
 10// Returns true if the path matches either GNOT_DENOM ("ugnot") or WUGNOT_PATH.
 11func IsGNOTPath(path string) bool {
 12	return path == GNOT_DENOM || path == WUGNOT_PATH
 13}
 14
 15// IsGNOTNativePath checks if the given path is the native gnot path.
 16//
 17// Parameters:
 18//   - path: token path to check
 19//
 20// Returns true if the path matches GNOT_DENOM ("ugnot").
 21func IsGNOTNativePath(path string) bool {
 22	return path == GNOT_DENOM
 23}
 24
 25// IsGNOTWrappedPath checks if the given path is the wrapped ugnot path.
 26//
 27// Parameters:
 28//   - path: token path to check
 29//
 30// Returns true if the path matches WUGNOT_PATH.
 31func IsGNOTWrappedPath(path string) bool {
 32	return path == WUGNOT_PATH
 33}
 34
 35// ExistsUserSendCoins checks if the user has sent any coins with the transaction.
 36//
 37// Returns true if any coins (with positive amount) were sent with the transaction.
 38func ExistsUserSendCoins() bool {
 39	return len(getUserSendCoins()) > 0
 40}
 41
 42// isUserSendGNOTAmount validates if the user sent the expected gnot amount
 43// Returns true in the following cases:
 44//   - GNOT was sent and amount matches expected
 45//
 46// Returns false in the following cases:
 47//   - GNOT was sent and amount does not match expected
 48func isUserSendGNOTAmount(amount int64) bool {
 49	sendCoins := getUserSendCoins()
 50
 51	gnotAmount := int64(0)
 52
 53	if amount, exists := sendCoins[GNOT_DENOM]; exists {
 54		gnotAmount = amount
 55	}
 56
 57	return gnotAmount == amount
 58}
 59
 60// hasUnsupportedNativeCoins checks if the user sent unsupported native coins
 61// Gnoswap only supports GNOT native coin, so this function detects:
 62// Returns true (has unsupported coins) in the following cases:
 63//   - Multiple coin types were sent (more than 1 coin type)
 64//   - Single non-GNOT coin was sent
 65//   - Single GNOT coin was sent but amount is zero or negative
 66//
 67// Returns false (no unsupported coins) in the following cases:
 68//   - No coins were sent at all
 69//   - Single GNOT coin was sent with positive amount
 70func hasUnsupportedNativeCoins() bool {
 71	sendCoins := getUserSendCoins()
 72	if len(sendCoins) == 0 {
 73		return false
 74	}
 75
 76	if len(sendCoins) != 1 {
 77		return true
 78	}
 79
 80	amount, ok := sendCoins[GNOT_DENOM]
 81	if !ok || amount <= 0 {
 82		return true
 83	}
 84
 85	return false
 86}
 87
 88// getUserSendCoins retrieves and aggregates all coins sent by the user in the current transaction
 89// Returns a map of denomination to total amount, filtering out zero or negative amounts
 90func getUserSendCoins() map[string]int64 {
 91	coinsMap := make(map[string]int64)
 92
 93	for _, coin := range banker.OriginSend() {
 94		if coin.Amount <= 0 {
 95			continue
 96		}
 97
 98		if _, exists := coinsMap[coin.Denom]; exists {
 99			coinsMap[coin.Denom] += coin.Amount
100		} else {
101			coinsMap[coin.Denom] = coin.Amount
102		}
103	}
104
105	return coinsMap
106}