Add SEP-7 support

gradle/libs.versions.toml

@@ -6,7 +6,7 @@ coroutines = "1.6.4"
 google-gson = "2.8.9"
 hoplite = "2.7.0"
 jjwt = "0.12.5"
-java-stellar-sdk = "1.0.0"
+java-stellar-sdk = "2.0.0"
 dokka = "1.6.10"
 kotlin = "1.8.20"
 kotlinx-json = "1.5.0"

wallet-sdk/src/main/kotlin/org/stellar/walletsdk/Wallet.kt

@@ -20,6 +20,8 @@ import org.stellar.walletsdk.json.defaultJson
 import org.stellar.walletsdk.recovery.Recovery
 import org.stellar.walletsdk.recovery.RecoveryServer
 import org.stellar.walletsdk.recovery.RecoveryServerKey
+import org.stellar.walletsdk.uri.Sep7
+import org.stellar.walletsdk.uri.Sep7Base
 
 /**
  * Wallet SDK main entry point. It provides methods to build wallet applications on the Stellar
@@ -50,6 +52,26 @@ class Wallet(
     return Recovery(cfg, stellar(), getClient(httpClientConfig), servers)
   }
 
+  /**
+   * Access SEP-7 URI functionality for creating and parsing Stellar URIs.
+   *
+   * @return Sep7 object providing SEP-7 utilities
+   */
+  fun uri(): Sep7 {
+    return Sep7
+  }
+
+  /**
+   * Parse a SEP-7 URI string into the appropriate Sep7 object.
+   *
+   * @param uriString The SEP-7 URI string to parse
+   * @return Sep7Base instance (either Sep7Pay or Sep7Tx)
+   * @throws org.stellar.walletsdk.uri.Sep7InvalidUriError if the URI is invalid
+   */
+  fun parseSep7Uri(uriString: String): Sep7Base {
+    return Sep7.parseUri(uriString)
+  }
+
   override fun close() {
     clients.forEach { it.close() }
   }

wallet-sdk/src/main/kotlin/org/stellar/walletsdk/horizon/transaction/CommonTransactionBuilder.kt

@@ -37,11 +37,11 @@ abstract class CommonTransactionBuilder<T>(protected val sourceAddress: String)
         "$sourceAddress, signerAddress = $signerAddress, signerWeight = $signerWeight"
     }
 
-    val signer = Signer.ed25519PublicKey(signerAddress.keyPair)
+    val signerKey = SignerKey.fromEd25519PublicKey(signerAddress.keyPair.accountId)
 
     SetOptionsOperation.builder()
       .sourceAccount(sourceAddress)
-      .signer(signer)
+      .signer(signerKey)
       .signerWeight(signerWeight)
       .build()
   }

wallet-sdk/src/main/kotlin/org/stellar/walletsdk/toml/Data.kt

@@ -38,6 +38,12 @@ data class TomlInfo(
         } else {
           null
         },
+      sep7 =
+        if (uriRequestSigningKey != null) {
+          Sep7(uriRequestSigningKey)
+        } else {
+          null
+        },
       sep10 =
         if (hasAuth) {
           Sep10(webAuthEndpoint.toString(), signingKey.toString())
@@ -165,6 +171,7 @@ data class InfoCurrency(
 
 data class InfoServices(
   val sep6: Sep6?,
+  val sep7: Sep7?,
   val sep10: Sep10?,
   val sep12: Sep12?,
   val sep24: Sep24?,
@@ -181,6 +188,14 @@ data class InfoServices(
  */
 data class Sep6(val transferServer: String, val anchorQuoteServer: String?)
 
+/**
+ * [SEP-7](https://github.com/stellar/stellar-protocol/blob/master/ecosystem/sep-0007.md): URI
+ * scheme for Stellar transactions and operations.
+ *
+ * @property signingKey Stellar public address of the URI request signing key
+ */
+data class Sep7(val signingKey: String)
+
 /**
  * [SEP-10](https://github.com/stellar/stellar-protocol/blob/master/ecosystem/sep-0010.md): Stellar
  * web authentication.

wallet-sdk/src/main/kotlin/org/stellar/walletsdk/uri/Sep7.kt

@@ -0,0 +1,72 @@
+package org.stellar.walletsdk.uri
+
+/**
+ * SEP-7 URI Support
+ *
+ * This package provides support for SEP-7 (URI Scheme to facilitate delegated signing).
+ * @see [SEP-0007](https://github.com/stellar/stellar-protocol/blob/master/ecosystem/sep-0007.md)
+ *
+ * Main components:
+ * - [Sep7Pay]
+ * - Represents payment operations
+ * - [Sep7Tx]
+ * - Represents transaction operations
+ * - [Sep7Parser]
+ * - Utilities for parsing and validating SEP-7 URIs
+ *
+ * Example usage:
+ * ```kotlin
+ * // Create a payment URI
+ * val payUri = Sep7Pay.forDestination("GACCOUNT...")
+ *     .amount("100")
+ *     .assetCode("USDC")
+ *     .callback("https://myapp.com/callback")
+ *
+ * // Parse a URI
+ * val uri = Sep7Parser.parseSep7Uri("web+stellar:pay?destination=G...")
+ * when (uri) {
+ *     is Sep7Pay -> handlePayment(uri)
+ *     is Sep7Tx -> handleTransaction(uri)
+ * }
+ *
+ * // Validate a URI
+ * val validation = Sep7Parser.isValidSep7Uri(uriString)
+ * if (!validation.result) {
+ *     println("Invalid URI: ${validation.reason}")
+ * }
+ * ```
+ */
+object Sep7 {
+  /**
+   * Parse a SEP-7 URI string into the appropriate Sep7 object
+   * @param uriString The URI string to parse
+   * @return Sep7Pay or Sep7Tx instance
+   * @throws Sep7InvalidUriError if the URI is invalid
+   */
+  @JvmStatic fun parseUri(uriString: String): Sep7Base = Sep7Parser.parseSep7Uri(uriString)
+
+  /**
+   * Check if a URI string is a valid SEP-7 URI
+   * @param uriString The URI string to validate
+   * @return Validation result with success status and optional error reason
+   */
+  @JvmStatic
+  fun isValidUri(uriString: String): IsValidSep7UriResult = Sep7Parser.isValidSep7Uri(uriString)
+
+  /**
+   * Create a new payment URI
+   * @param destination The destination Stellar address
+   * @return Sep7Pay instance
+   */
+  @JvmStatic
+  fun createPaymentUri(destination: String): Sep7Pay = Sep7Pay.forDestination(destination)
+
+  /**
+   * Create a new transaction URI
+   * @param transaction The transaction to encode
+   * @return Sep7Tx instance
+   */
+  @JvmStatic
+  fun createTransactionUri(transaction: org.stellar.sdk.Transaction): Sep7Tx =
+    Sep7Tx.forTransaction(transaction)
+}