Refactor thorchain and add mayachain swap (#450)

* refactor thorchain and add mayachain swap

* Add Mayachain support across platforms

Introduce Mayachain (maya) as a supported chain across Android, iOS and core Rust crates. Add chain enums, denom (cacao), native asset (CACAO), chain config, node and settings entries, and block explorer integration. Update signer, transaction encoding, fee/base fee and fee-rate logic to include Mayachain where it follows Thorchain behavior. Wire up swapper/THORChain mappings, provider factory, address conversion, tests and UI assets (SVG/xcassets) for Android and iOS. Also include minor Swift/formatting/test fixes unrelated to chain addition.

---------

Co-authored-by: gemcoder21 <104884878+gemcoder21@users.noreply.github.com>

Author: 0xh3rman

android/app/src/main/assets/chains/icons/mayachain.svg

@@ -2,6 +2,7 @@ package com.gemwallet.android.blockchain.operators
 
 import com.gemwallet.android.blockchain.includeLibs
 import com.gemwallet.android.blockchain.operators.walletcore.WCCreateAccountOperator
+import com.gemwallet.android.ext.available
 import com.gemwallet.android.testkit.LOCAL_KEYSTORE_TEST_PHRASE
 import com.gemwallet.android.testkit.TEST_PHRASE
 import com.wallet.core.primitives.Chain
@@ -48,7 +49,7 @@ class TestCreateAccountOperator {
     fun testCreate_account_derive_address_matches_ios_local_keystore() {
         val operator = WCCreateAccountOperator()
 
-        Chain.entries.forEach { chain ->
+        Chain.available().forEach { chain ->
             val account = operator(
                 walletType = WalletType.Multicoin,
                 data = LOCAL_KEYSTORE_TEST_PHRASE,
@@ -94,6 +95,7 @@ class TestCreateAccountOperator {
         Chain.Stable -> "0x8f348F300873Fd5DA36950B2aC75a26584584feE"
         Chain.Solana -> "57mwmnV2rFuVDmhiJEjonD7cfuFtcaP9QvYNGfDEWK71"
         Chain.Thorchain -> "thor1c8jd7ad9pcw4k3wkuqlkz4auv95mldr2kyhc65"
+        Chain.Mayachain -> error("Mayachain accounts are not derived")
         Chain.Cosmos -> "cosmos142j9u5eaduzd7faumygud6ruhdwme98qsy2ekn"
         Chain.Osmosis -> "osmo142j9u5eaduzd7faumygud6ruhdwme98qclefqp"
         Chain.Ton -> "UQDgEMqToTacHic7SnvnPFmvceG5auFkCcAw0mSCvzvKUaT4"

android/blockchain/src/androidTest/kotlin/com/gemwallet/android/blockchain/operators/TestCreateAccountOperator.kt

@@ -25,4 +25,5 @@ internal fun SwapProvider.toGem(): SwapperProvider = when (this) {
     SwapProvider.Hyperliquid -> SwapperProvider.HYPERLIQUID
     SwapProvider.Orca -> SwapperProvider.ORCA
     SwapProvider.Squid -> SwapperProvider.SQUID
+    SwapProvider.Mayachain -> SwapperProvider.MAYACHAIN
 }

android/blockchain/src/main/kotlin/com/gemwallet/android/blockchain/gemstone/GemSwapProviderMapper.kt

@@ -29,6 +29,7 @@ class WCChainTypeProxy : ChainTypeProxy<CoinType> {
         Chain.Solana -> CoinType.SOLANA
         Chain.Polygon -> CoinType.POLYGON
         Chain.Thorchain -> CoinType.THORCHAIN
+        Chain.Mayachain -> CoinType.THORCHAIN
         Chain.Cosmos -> CoinType.COSMOS
         Chain.Osmosis -> CoinType.OSMOSIS
         Chain.Arbitrum -> CoinType.ARBITRUM

android/blockchain/src/main/kotlin/com/gemwallet/android/blockchain/operators/walletcore/WCChainTypeProxy.kt

@@ -12,6 +12,7 @@ import com.gemwallet.android.data.service.store.database.entities.toDTO
 import com.gemwallet.android.data.service.store.database.entities.toRecord
 import com.gemwallet.android.domains.asset.defaultBasic
 import com.gemwallet.android.ext.asset
+import com.gemwallet.android.ext.available
 import com.wallet.core.primitives.Account
 import com.wallet.core.primitives.Chain
 import com.wallet.core.primitives.Wallet
@@ -79,10 +80,11 @@ class WalletsRepositoryImpl @Inject constructor(
         source: WalletSource
     ): Wallet {
         val accounts = mutableListOf<Account>()
+        val availableChains = Chain.available()
         val chains =
             if ((type == WalletType.Single || type == WalletType.PrivateKey) && chain != null) listOf(
                 chain
-            ) else Chain.entries
+            ) else Chain.entries.filter(availableChains::contains)
         for (item in chains) {
             accounts.add(createAccount(type, data, item))
         }

android/data/repositories/src/main/kotlin/com/gemwallet/android/data/repositories/wallets/WalletsRepositoryImpl.kt

@@ -96,6 +96,7 @@ fun SwapperProvider.getSwapProviderIcon(): String {
         SwapperProvider.UNISWAP_V3 -> "uniswap"
         SwapperProvider.PANCAKESWAP_V3 -> "pancakeswap"
         SwapperProvider.THORCHAIN -> "thorchain"
+        SwapperProvider.MAYACHAIN -> return Chain.Mayachain.getIconUrl()
         SwapperProvider.JUPITER -> "jupiter"
         SwapperProvider.ACROSS -> "across"
         SwapperProvider.OKU -> "oku"

android/gemcore/src/main/kotlin/com/gemwallet/android/domains/asset/IconUrlGeneration.kt

@@ -72,7 +72,8 @@ fun Chain.assetType(): AssetType? {
         Chain.Polkadot,
         Chain.Cardano,
         Chain.Zcash,
-        Chain.Near
+        Chain.Near,
+        Chain.Mayachain
              -> null
     }
 }
@@ -130,7 +131,7 @@ fun Chain.Companion.findByString(value: String): Chain? {
     return Chain.entries.firstOrNull{ it.string == value}
 }
 
-fun Chain.Companion.available() = Chain.entries.toSet()
+fun Chain.Companion.available() = Chain.entries.filterNot { it == Chain.Mayachain }.toSet()
 
 fun List<Chain>.filter(query: String): List<Chain> {
     return filter {
@@ -161,6 +162,7 @@ fun Chain.toChainType(): ChainType {
         Chain.Zcash,
         Chain.Litecoin -> ChainType.Bitcoin
         Chain.Thorchain,
+        Chain.Mayachain,
         Chain.Osmosis,
         Chain.Celestia,
         Chain.Injective,

android/gemcore/src/main/kotlin/com/gemwallet/android/ext/Chain.kt

@@ -25,6 +25,8 @@ enum class Chain(val string: String) {
 	Polygon("polygon"),
 	@SerialName("thorchain")
 	Thorchain("thorchain"),
+	@SerialName("mayachain")
+	Mayachain("mayachain"),
 	@SerialName("cosmos")
 	Cosmos("cosmos"),
 	@SerialName("osmosis")

android/gemcore/src/main/kotlin/com/wallet/core/primitives/generated/Chain.kt

@@ -17,6 +17,8 @@ enum class CosmosChain(val string: String) {
 	Celestia("celestia"),
 	@SerialName("thorchain")
 	Thorchain("thorchain"),
+	@SerialName("mayachain")
+	Mayachain("mayachain"),
 	@SerialName("injective")
 	Injective("injective"),
 	@SerialName("sei")
@@ -29,6 +31,8 @@ enum class CosmosChain(val string: String) {
 enum class CosmosDenom(val string: String) {
 	@SerialName("rune")
 	Rune("rune"),
+	@SerialName("cacao")
+	Cacao("cacao"),
 	@SerialName("uatom")
 	Uatom("uatom"),
 	@SerialName("uosmo")

android/gemcore/src/main/kotlin/com/wallet/core/primitives/generated/ChainCosmos.kt

@@ -51,5 +51,7 @@ enum class SwapProvider(val string: String) {
 	Orca("orca"),
 	@SerialName("squid")
 	Squid("squid"),
+	@SerialName("mayachain")
+	Mayachain("mayachain"),
 }