[Polkadot]: Refactor Polkadot to support any Substrate chain

android/app/src/androidTest/java/com/trustwallet/core/app/blockchains/polkadot/TestPolkadotSigner.kt

@@ -115,4 +115,48 @@ class TestPolkadotSigner {
         val expected = "0xd10184008361bd08ddca5fda28b5e2aa84dc2621de566e23e089e555a42194c3eaf2da7900c891ba102db672e378945d74cf7f399226a76b43cab502436971599255451597fc2599902e4b62c7ce85ecc3f653c693fef3232be620984b5bb5bcecbbd7b209d50318001a02080706070207004d446617"
         assertEquals(encoded, expected)
     }
+
+    @Test
+    fun PolkadotTransactionAcalaSigning() {
+        val transferCallIndices = Polkadot.CallIndices.newBuilder().apply {
+            custom = Polkadot.CustomCallIndices.newBuilder().apply {
+                moduleIndex = 0x0a
+                methodIndex = 0x00
+            }.build()
+        }
+
+        val call = Polkadot.Balance.Transfer.newBuilder().apply {
+            value = "0xe8d4a51000".toHexBytesInByteString() // 1 ACA
+            toAddress = "25Qqz3ARAvnZbahGZUzV3xpP1bB3eRrupEprK7f2FNbHbvsz"
+            callIndices = transferCallIndices.build()
+        }
+
+        val acalaGenesisHashStr = "0xfc41b9bd8ef8fe53d58c7ea67c794c7ec9a73daf05e6d54b14ff6342c99ba64c".toHexBytesInByteString()
+        val acalaNetworkSs58Prefix = 10
+
+        val input = Polkadot.SigningInput.newBuilder().apply {
+            genesisHash = acalaGenesisHashStr
+            blockHash = "0x707ffa05b7dc6cdb6356bd8bd51ff20b2757c3214a76277516080a10f1bc7537".toHexBytesInByteString()
+            nonce = 0
+            specVersion = 2170
+            network = acalaNetworkSs58Prefix
+            transactionVersion = 2
+            privateKey = "9066aa168c379a403becb235c15e7129c133c244e56a757ab07bc369288bcab0".toHexBytesInByteString()
+            era = Polkadot.Era.newBuilder().apply {
+                blockNumber = 3893613
+                period = 64
+            }.build()
+            balanceCall = Polkadot.Balance.newBuilder().apply {
+                transfer = call.build()
+            }.build()
+            multiAddress = true
+        }
+
+        val output = AnySigner.sign(input.build(), POLKADOT, SigningOutput.parser())
+        val encoded = Numeric.toHexString(output.encoded.toByteArray())
+
+        // https://acala.subscan.io/extrinsic/3893620-3
+        val expected = "0x41028400e9590e4d99264a14a85e21e69537e4a64f66a875d38cb8f76b305f41fabe24a900dd54466dffd1e3c80b76013e9459fbdcd17805bd5fdbca0961a643bad1cbd2b7fe005c62c51c18b67f31eb9e61b187a911952fee172ef18402d07c703eec3100d50200000a0000c8c602ded977c56076ae38d98026fa669ca10d6a2b5a0bfc4086ae7668ed1c60070010a5d4e8"
+        assertEquals(encoded, expected)
+    }
 }

rust/tw_proto/src/ffi.rs

@@ -74,6 +74,8 @@ pub unsafe extern "C" fn polkadot_test_signing_input() -> CByteArrayResult {
     let balance = BalanceEnum::transfer(proto::mod_Balance::Transfer {
         to_address: Cow::from(to_address),
         value: Cow::Borrowed(&value),
+        memo: Cow::default(),
+        call_indices: None,
     });
     let signing_input = proto::SigningInput {
         block_hash: Cow::Owned(block_hash),

samples/kmp/shared/build.gradle.kts

@@ -35,7 +35,7 @@ kotlin {
     sourceSets {
         val commonMain by getting {
             dependencies {
-                implementation("com.trustwallet:wallet-core-kotlin:3.2.0")
+                implementation("com.trustwallet:wallet-core-kotlin:3.2.1")
             }
         }
         val commonTest by getting {

src/Polkadot/Address.h

@@ -24,6 +24,9 @@ class Address: public SS58Address {
     /// Initializes a Polkadot address with a string representation.
     explicit Address(const std::string& string): SS58Address(string, TWSS58AddressTypePolkadot) {}
 
+    /// Initializes a Polkadot address with a string representation.
+    explicit Address(const std::string& string, uint32_t ss58Prefix): SS58Address(string, ss58Prefix) {}
+
     /// Initializes a Polkadot address with a public key.
     explicit Address(const PublicKey& publicKey): SS58Address(publicKey, TWSS58AddressTypePolkadot) {}
     /// Initializes a Polkadot address with a public key and a given ss58Prefix.