feat: add Aptos USDT/USDC payment support

src/util/address/move.go

@@ -0,0 +1,67 @@
+package addressutil
+
+import (
+	"encoding/hex"
+	"fmt"
+	"strings"
+)
+
+// NormalizeMoveAddress returns the canonical 0x-prefixed, 64-hex-character
+// account address used by Aptos.
+func NormalizeMoveAddress(input string) (string, error) {
+	raw := strings.ToLower(strings.TrimSpace(input))
+	raw = strings.TrimPrefix(raw, "0x")
+	if raw == "" {
+		return "", fmt.Errorf("move address is empty")
+	}
+	if len(raw) > 64 {
+		return "", fmt.Errorf("move address is too long")
+	}
+	if _, err := hex.DecodeString(padEvenHex(raw)); err != nil {
+		return "", fmt.Errorf("invalid move address")
+	}
+	return "0x" + strings.Repeat("0", 64-len(raw)) + raw, nil
+}
+
+func padEvenHex(raw string) string {
+	if len(raw)%2 == 0 {
+		return raw
+	}
+	return "0" + raw
+}
+
+// NormalizeMoveAssetID canonicalizes Move asset identifiers used in
+// chain_tokens.contract_address for Aptos. A plain address is normalized to
+// 64 hex chars; structured types keep module/name suffixes after normalizing
+// the leading address.
+func NormalizeMoveAssetID(input string) string {
+	raw := strings.ToLower(strings.TrimSpace(input))
+	if raw == "" {
+		return ""
+	}
+	parts := strings.Split(raw, "::")
+	if len(parts) == 1 {
+		if addr, err := NormalizeMoveAddress(raw); err == nil {
+			return addr
+		}
+		return raw
+	}
+	if addr, err := NormalizeMoveAddress(parts[0]); err == nil {
+		parts[0] = addr
+	}
+	return strings.Join(parts, "::")
+}
+
+func MoveAssetMatches(observed, configured string) bool {
+	observed = NormalizeMoveAssetID(observed)
+	configured = NormalizeMoveAssetID(configured)
+	if configured == "" {
+		return observed == ""
+	}
+	if observed == configured {
+		return true
+	}
+	// Aptos FA event payloads may expose only the metadata address while other
+	// payloads expose a type string containing the same address.
+	return strings.Contains(observed, configured)
+}