werk

app/src/main/AndroidManifest.xml

@@ -19,6 +19,9 @@
     <!-- Haptic feedback permission -->
     <uses-permission android:name="android.permission.VIBRATE" />
 
+    <!-- Internet permission -->
+    <uses-permission android:name="android.permission.INTERNET" />
+    
     <!-- Hardware features -->
     <uses-feature android:name="android.hardware.bluetooth_le" android:required="true" />
     <uses-feature android:name="android.hardware.bluetooth" android:required="true" />

app/src/main/java/com/bitchat/android/wallet/service/CashuService.kt

@@ -3,14 +3,14 @@ package com.bitchat.android.wallet.service
 import kotlinx.coroutines.withContext
 import kotlinx.coroutines.Dispatchers
 import android.util.Log
+import android.content.Context
 import com.bitchat.android.wallet.data.*
 import uniffi.cdk_ffi.*
 import java.math.BigDecimal
 import java.util.*
 
 /**
- * Real Cashu service using the CDK FFI library with graceful fallback
+ * Real Cashu service using the CDK FFI library
- * when CDK is not available on the device architecture
  */
 class CashuService {
     
@@ -20,11 +20,10 @@ class CashuService {
     private var currentUnit: String = "sat"
     private var isInitialized = false
     private var isCdkAvailable = false
-    private var mockBalance = 1000L // Fallback balance
     
     companion object {
         private const val TAG = "CashuService"
-        private const val DEFAULT_MINT_URL = "https://mint.minibits.cash/Bitcoin"
+        private const val DEFAULT_MINT_URL = "https://testnut.cashu.space"
         
         @Volatile
         private var INSTANCE: CashuService? = null
@@ -44,151 +43,26 @@ class CashuService {
         
         Log.d(TAG, "=== CDK LIBRARY AVAILABILITY CHECK ===")
         
-        // Check device architecture
-        val arch = System.getProperty("os.arch")
-        val arch64 = System.getProperty("os.arch").contains("64")
-        val abiList = android.os.Build.SUPPORTED_64_BIT_ABIS.joinToString(", ")
-        val primaryAbi = android.os.Build.SUPPORTED_ABIS[0]
-        
-        Log.d(TAG, "Device Architecture Info:")
-        Log.d(TAG, "  - os.arch: $arch")
-        Log.d(TAG, "  - 64-bit: $arch64")
-        Log.d(TAG, "  - Primary ABI: $primaryAbi")
-        Log.d(TAG, "  - Supported 64-bit ABIs: $abiList")
-        Log.d(TAG, "  - All ABIs: ${android.os.Build.SUPPORTED_ABIS.joinToString(", ")}")
-        
-        // Check JNA availability
         try {
-            val jnaVersion = com.sun.jna.Native.VERSION
+            // Test CDK availability by calling a simple function
-            val jnaNativeVersion = com.sun.jna.Native.VERSION_NATIVE
-            Log.d(TAG, "JNA Library Info:")
-            Log.d(TAG, "  - JNA Version: $jnaVersion")
-            Log.d(TAG, "  - JNA Native Version: $jnaNativeVersion")
-            Log.d(TAG, "  - JNA Platform: ${System.getProperty("jna.platform.library.path")}")
-            Log.d(TAG, "  - JNA Library Path: ${System.getProperty("jna.library.path")}")
-        } catch (e: Exception) {
-            Log.w(TAG, "JNA Library issue: ${e.message}")
-        }
-        
-        // Check native library paths
-        val libraryPath = System.getProperty("java.library.path")
-        Log.d(TAG, "Java Library Path: $libraryPath")
-        
-        // Check if CDK classes are available
-        Log.d(TAG, "Checking CDK-FFI Classes:")
-        
-        val cdkClasses = listOf(
-            "uniffi.cdk_ffi.FfiWallet",
-            "uniffi.cdk_ffi.FfiLocalStore", 
-            "uniffi.cdk_ffi.FfiAmount",
-            "uniffi.cdk_ffi.FfiException",
-            "uniffi.cdk_ffi.Cdk_ffiKt"
-        )
-        
-        for (className in cdkClasses) {
-            try {
-                Class.forName(className)
-                Log.d(TAG, "  ✅ $className - Found")
-            } catch (e: ClassNotFoundException) {
-                Log.w(TAG, "  ❌ $className - Not found")
-            }
-        }
-        
-        // Check native library loading
-        Log.d(TAG, "Checking Native Library Loading:")
-        
-        val libraryNames = listOf("cdk_ffi", "libcdk_ffi", "cdk_ffi.so", "libcdk_ffi.so")
-        
-        for (libName in libraryNames) {
-            try {
-                System.loadLibrary(libName)
-                Log.d(TAG, "  ✅ Successfully loaded: $libName")
-                break
-            } catch (e: UnsatisfiedLinkError) {
-                Log.w(TAG, "  ❌ Failed to load $libName: ${e.message}")
-            }
-        }
-        
-        // Check for CDK-FFI native libraries in APK
-        Log.d(TAG, "Checking APK Native Libraries:")
-        try {
-            val context = Class.forName("android.app.ActivityThread")
-                .getMethod("currentApplication")
-                .invoke(null) as android.content.Context?
-                
-            if (context != null) {
-                val appInfo = context.applicationInfo
-                Log.d(TAG, "  - App native library dir: ${appInfo.nativeLibraryDir}")
-                
-                // Check if libcdk_ffi.so exists
-                val nativeLibDir = java.io.File(appInfo.nativeLibraryDir)
-                if (nativeLibDir.exists()) {
-                    val files = nativeLibDir.listFiles()
-                    Log.d(TAG, "  - Native library files:")
-                    files?.forEach { file ->
-                        val size = if (file.isFile) " (${file.length() / 1024}KB)" else ""
-                        Log.d(TAG, "    - ${file.name}$size")
-                    }
-                    
-                    val cdkLib = java.io.File(nativeLibDir, "libcdk_ffi.so")
-                    if (cdkLib.exists()) {
-                        Log.d(TAG, "  ✅ libcdk_ffi.so found: ${cdkLib.length() / 1024 / 1024}MB")
-                    } else {
-                        Log.w(TAG, "  ❌ libcdk_ffi.so not found in native library directory")
-                    }
-                } else {
-                    Log.w(TAG, "  ❌ Native library directory does not exist")
-                }
-            }
-        } catch (e: Exception) {
-            Log.w(TAG, "Could not check APK native libraries: ${e.message}")
-        }
-        
-        // Now try to initialize CDK
-        Log.d(TAG, "Attempting CDK Initialization:")
-        
-        try {
-            Log.d(TAG, "  - Trying to call generateMnemonic()...")
             val testMnemonic = generateMnemonic()
-            Log.d(TAG, "  ✅ generateMnemonic() successful - mnemonic length: ${testMnemonic.split(" ").size} words")
             Log.d(TAG, "✅ CDK library is fully available and functional!")
+            Log.d(TAG, "Generated test mnemonic with ${testMnemonic.split(" ").size} words")
             isCdkAvailable = true
             return true
             
         } catch (e: UnsatisfiedLinkError) {
-            Log.w(TAG, "❌ UnsatisfiedLinkError during CDK initialization:")
+            Log.w(TAG, "❌ CDK library not available: ${e.message}")
-            Log.w(TAG, "   Error: ${e.message}")
-            Log.w(TAG, "   This usually means the native library (libcdk_ffi.so) is missing or incompatible")
-            
-            // Try to get more details about the error
-            val errorMsg = e.message ?: ""
-            when {
-                errorMsg.contains("dlopen") -> Log.w(TAG, "   Hint: Dynamic library loading failed")
-                errorMsg.contains("undefined symbol") -> Log.w(TAG, "   Hint: Missing symbols in native library")
-                errorMsg.contains("wrong ELF class") -> Log.w(TAG, "   Hint: Architecture mismatch (32-bit vs 64-bit)")
-                errorMsg.contains("No such file") -> Log.w(TAG, "   Hint: Native library file not found")
-            }
-            
         } catch (e: FfiException) {
-            Log.w(TAG, "❌ CDK FFI Exception during initialization:")
+            Log.w(TAG, "❌ CDK FFI error: ${e.message}")
-            Log.w(TAG, "   Error: ${e.message}")
-            Log.w(TAG, "   This means the library loaded but CDK functionality failed")
-            
         } catch (e: NoClassDefFoundError) {
-            Log.w(TAG, "❌ NoClassDefFoundError during CDK initialization:")
+            Log.w(TAG, "❌ CDK classes not found: ${e.message}")
-            Log.w(TAG, "   Error: ${e.message}")
-            Log.w(TAG, "   This usually means CDK classes are missing from classpath")
-            
         } catch (e: Exception) {
-            Log.w(TAG, "❌ Unexpected error during CDK initialization:")
+            Log.w(TAG, "❌ Unexpected CDK error: ${e.message}")
-            Log.w(TAG, "   Error type: ${e.javaClass.simpleName}")
-            Log.w(TAG, "   Error message: ${e.message}")
-            Log.w(TAG, "   Stack trace: ${e.stackTrace.joinToString("\n") { "     $it" }}")
         }
         
         isCdkAvailable = false
-        Log.w(TAG, "⚠️ CDK library not available - using fallback mode")
+        Log.w(TAG, "⚠️ CDK library not available - wallet will not function properly")
-        Log.d(TAG, "📱 Running in demo mode with simulated operations")
         Log.d(TAG, "=== END CDK LIBRARY CHECK ===")
         return false
     }
@@ -202,80 +76,66 @@ class CashuService {
                 Log.d(TAG, "Initializing wallet with mint: $mintUrl")
                 
                 // Test CDK availability first
-                if (initializeCdkAvailability()) {
+                if (!initializeCdkAvailability()) {
-                    // Real CDK implementation
+                    return@withContext Result.failure(Exception("CDK library not available"))
-                    return@withContext initializeRealWallet(mintUrl, unit)
-                } else {
-                    // Fallback implementation
-                    return@withContext initializeFallbackWallet(mintUrl, unit)
                 }
+                
+                // Create database path using application context
+                val context = getApplicationContext()
+                val dbPath = "${context.filesDir}/cashu_wallet.db"
+                
+                // Create local store
+                localStore = FfiLocalStore.newWithPath(dbPath)
+                Log.d(TAG, "Created CDK local store at: $dbPath")
+                
+                // Generate or restore mnemonic
+                val mnemonic = generateMnemonic()
+                Log.d(TAG, "Generated wallet mnemonic")
+                
+                // Convert unit string to FfiCurrencyUnit
+                val ffiUnit = when (unit.lowercase()) {
+                    "sat" -> FfiCurrencyUnit.SAT
+                    "msat" -> FfiCurrencyUnit.MSAT
+                    "usd" -> FfiCurrencyUnit.USD
+                    "eur" -> FfiCurrencyUnit.EUR
+                    else -> FfiCurrencyUnit.SAT
+                }
+                
+                // Create wallet from mnemonic
+                wallet = FfiWallet.fromMnemonic(
+                    mintUrl = mintUrl,
+                    unit = ffiUnit,
+                    localstore = localStore!!,
+                    mnemonicWords = mnemonic
+                )
+                Log.d(TAG, "Created CDK wallet successfully")
+                
+                // Try to fetch mint info to verify connection
+                try {
+                    val info = wallet?.getMintInfo()
+                    Log.d(TAG, "Successfully connected to mint: ${info}")
+                } catch (e: Exception) {
+                    Log.w(TAG, "Could not fetch mint info: ${e.message}")
+                    // Continue anyway - wallet can work offline
+                }
+                
+                currentMintUrl = mintUrl
+                currentUnit = unit
+                isInitialized = true
+                
+                Log.d(TAG, "Real CDK wallet initialized successfully")
+                return@withContext Result.success(true)
+                
+            } catch (e: FfiException) {
+                Log.e(TAG, "CDK FFI error during wallet initialization", e)
+                return@withContext Result.failure(e)
             } catch (e: Exception) {
                 Log.e(TAG, "Failed to initialize wallet", e)
-                // Fall back to demo mode
+                return@withContext Result.failure(e)
-                return@withContext initializeFallbackWallet(mintUrl, unit)
             }
         }
     }
     
-    /**
-     * Initialize real CDK wallet
-     */
-    private suspend fun initializeRealWallet(mintUrl: String, unit: String): Result<Boolean> {
-        try {
-            // Create local store directly using CDK-FFI
-            localStore = FfiLocalStore()
-            Log.d(TAG, "Created CDK local store")
-            
-            // Generate mnemonic directly using CDK-FFI
-            val mnemonic = generateMnemonic()
-            Log.d(TAG, "Generated mnemonic for wallet")
-            
-            // Convert unit string to FfiCurrencyUnit
-            val ffiUnit = when (unit.lowercase()) {
-                "sat" -> FfiCurrencyUnit.SAT
-                "msat" -> FfiCurrencyUnit.MSAT
-                "usd" -> FfiCurrencyUnit.USD
-                "eur" -> FfiCurrencyUnit.EUR
-                else -> FfiCurrencyUnit.SAT
-            }
-            
-            // Create wallet from mnemonic directly using CDK-FFI
-            wallet = FfiWallet.fromMnemonic(
-                mintUrl = mintUrl,
-                unit = ffiUnit,
-                localstore = localStore!!,
-                mnemonicWords = mnemonic
-            )
-            Log.d(TAG, "Created CDK wallet successfully")
-            
-            currentMintUrl = mintUrl
-            currentUnit = unit
-            isInitialized = true
-            
-            Log.d(TAG, "Real CDK wallet initialized successfully")
-            return Result.success(true)
-        } catch (e: FfiException) {
-            Log.e(TAG, "CDK FFI error during wallet initialization", e)
-            return Result.failure(e)
-        } catch (e: Exception) {
-            Log.e(TAG, "Failed to initialize real CDK wallet", e)
-            return Result.failure(e)
-        }
-    }
-    
-    /**
-     * Initialize fallback wallet (demo mode)
-     */
-    private suspend fun initializeFallbackWallet(mintUrl: String, unit: String): Result<Boolean> {
-        currentMintUrl = mintUrl
-        currentUnit = unit
-        isInitialized = true
-        mockBalance = 1000L // Demo balance
-        
-        Log.d(TAG, "Demo wallet initialized with $mockBalance sats")
-        return Result.success(true)
-    }
-    
     suspend fun getMintInfo(mintUrl: String): Result<MintInfo> {
         return withContext(Dispatchers.IO) {
             try {
@@ -285,16 +145,16 @@ class CashuService {
                 }
                 
                 val mintInfo = if (isCdkAvailable && wallet != null) {
-                    // Real mint info from CDK
                     try {
-                        val mintInfoJson = wallet!!.getMintInfo()
+                        // Get real mint info from CDK
+                        val mintInfoData = wallet!!.getMintInfo()
                         Log.d(TAG, "Retrieved real mint info from CDK")
                         
                         MintInfo(
                             url = mintUrl,
                             name = extractMintName(mintUrl),
-                            description = "Real Cashu mint",
+                            description = "Cashu mint via CDK",
-                            descriptionLong = "Real Cashu mint via CDK",
+                            descriptionLong = "Real Cashu mint connection via CDK-FFI",
                             contact = "",
                             version = "1.0.0",
                             nuts = mapOf(
@@ -309,14 +169,10 @@ class CashuService {
                         )
                     } catch (e: FfiException) {
                         Log.w(TAG, "CDK FFI error getting mint info: ${e.message}")
-                        createFallbackMintInfo(mintUrl) 
+                        throw e
-                    } catch (e: Exception) {
-                        Log.w(TAG, "Failed to get real mint info, using fallback: ${e.message}")
-                        createFallbackMintInfo(mintUrl)
                     }
                 } else {
-                    // Fallback mint info
+                    throw Exception("CDK not available")
-                    createFallbackMintInfo(mintUrl)
                 }
                 
                 Result.success(mintInfo)
@@ -327,26 +183,6 @@ class CashuService {
         }
     }
     
-    private fun createFallbackMintInfo(mintUrl: String): MintInfo {
-        return MintInfo(
-            url = mintUrl,
-            name = extractMintName(mintUrl) + " (Demo)",
-            description = "Demo Cashu mint",
-            descriptionLong = "Demo mode - not connected to real mint",
-            contact = "",
-            version = "0.1.0-demo",
-            nuts = mapOf(
-                "4" to "true",
-                "5" to "true", 
-                "7" to "true",
-                "8" to "true"
-            ),
-            motd = "Demo mode: Operations are simulated", 
-            icon = null,
-            time = Date()
-        )
-    }
-    
     /**
      * Get the current wallet balance
      */
@@ -357,28 +193,20 @@ class CashuService {
                     initializeWallet(DEFAULT_MINT_URL).getOrThrow()
                 }
                 
-                val balance = if (isCdkAvailable && wallet != null) {
+                if (!isCdkAvailable || wallet == null) {
-                    try {
+                    return@withContext Result.failure(Exception("CDK not available"))
-                        // Real balance from CDK
-                        val ffiAmount = wallet!!.balance()
-                        val balanceValue = ffiAmount.value.toLong()
-                        
-                        Log.d(TAG, "Real balance: $balanceValue sats")
-                        balanceValue
-                    } catch (e: FfiException) {
-                        Log.w(TAG, "CDK FFI error getting balance: ${e.message}")
-                        mockBalance
-                    } catch (e: Exception) {
-                        Log.w(TAG, "Failed to get real balance, using demo balance: ${e.message}")
-                        mockBalance
-                    }
-                } else {
-                    // Demo balance
-                    Log.d(TAG, "Demo balance: $mockBalance sats")
-                    mockBalance
                 }
                 
-                Result.success(balance)
+                // Get real balance from CDK
+                val ffiAmount = wallet!!.balance()
+                val balanceValue = ffiAmount.value.toLong()
+                
+                Log.d(TAG, "Real balance: $balanceValue sats")
+                Result.success(balanceValue)
+                
+            } catch (e: FfiException) {
+                Log.e(TAG, "CDK FFI error getting balance: ${e.message}")
+                Result.failure(e)
             } catch (e: Exception) {
                 Log.e(TAG, "Failed to get balance", e)
                 Result.failure(e)
@@ -396,50 +224,36 @@ class CashuService {
                     initializeWallet(DEFAULT_MINT_URL).getOrThrow()
                 }
                 
-                val token = if (isCdkAvailable && wallet != null) {
+                if (!isCdkAvailable || wallet == null) {
-                    try {
+                    return@withContext Result.failure(Exception("CDK not available"))
-                        // Real token creation with CDK
-                        Log.d(TAG, "Creating real token for amount: $amount")
-                        
-                        // Create send options
-                        val sendMemo = memo?.let { FfiSendMemo(it, true) }
-                        val sendOptions = FfiSendOptions(
-                            memo = sendMemo,
-                            amountSplitTarget = FfiSplitTarget.DEFAULT,
-                            sendKind = FfiSendKind.OnlineExact,
-                            includeFee = true,
-                            metadata = emptyMap(),
-                            maxProofs = null
-                        )
-                        
-                        // Create the token
-                        val ffiToken = wallet!!.send(
-                            amount = FfiAmount(amount.toULong()),
-                            options = sendOptions,
-                            memo = sendMemo
-                        )
-                        
-                        Log.d(TAG, "Created real token successfully")
-                        ffiToken.tokenString
-                    } catch (e: FfiException) {
-                        Log.w(TAG, "CDK FFI error creating token: ${e.message}")
-                        "cashuAdemo${amount}_${System.currentTimeMillis()}"
-                    } catch (e: Exception) {
-                        Log.w(TAG, "Failed to create real token, using demo: ${e.message}")  
-                        "cashuAdemo${amount}_${System.currentTimeMillis()}"
-                    }
-                } else {
-                    // Demo token
-                    "cashuAdemo${amount}_${System.currentTimeMillis()}"
                 }
                 
-                // Simulate balance reduction for demo mode
+                Log.d(TAG, "Creating real token for amount: $amount")
-                if (!isCdkAvailable) {
-                    mockBalance = maxOf(0, mockBalance - amount)
-                }
                 
-                Log.d(TAG, "Created token: ${token.take(20)}...")
+                // Create send options
-                Result.success(token)
+                val sendMemo = memo?.let { FfiSendMemo(it, true) }
+                val sendOptions = FfiSendOptions(
+                    memo = sendMemo,
+                    amountSplitTarget = FfiSplitTarget.DEFAULT,
+                    sendKind = FfiSendKind.OnlineExact,
+                    includeFee = true,
+                    metadata = emptyMap(),
+                    maxProofs = null
+                )
+                
+                // Create the token
+                val ffiToken = wallet!!.send(
+                    amount = FfiAmount(amount.toULong()),
+                    options = sendOptions,
+                    memo = sendMemo
+                )
+                
+                Log.d(TAG, "Created real token successfully")
+                Result.success(ffiToken.tokenString)
+                
+            } catch (e: FfiException) {
+                Log.e(TAG, "CDK FFI error creating token: ${e.message}")
+                Result.failure(e)
             } catch (e: Exception) {
                 Log.e(TAG, "Failed to create token", e)
                 Result.failure(e)
@@ -449,6 +263,8 @@ class CashuService {
     
     /**
      * Receive a Cashu token
+     * Note: CDK doesn't have explicit "receive" - tokens are auto-received when sent
+     * This function decodes and validates the token
      */
     suspend fun receiveToken(token: String): Result<Long> {
         return withContext(Dispatchers.IO) {
@@ -457,24 +273,23 @@ class CashuService {
                     initializeWallet(DEFAULT_MINT_URL).getOrThrow()
                 }
                 
+                if (!isCdkAvailable || wallet == null) {
+                    return@withContext Result.failure(Exception("CDK not available"))
+                }
+                
                 // Decode the token to get amount
                 val decodedToken = decodeToken(token).getOrThrow()
                 val amount = decodedToken.amount.toLong()
                 
-                if (isCdkAvailable && wallet != null) {
+                Log.d(TAG, "Token validation successful, amount: $amount")
-                    try {
-                        // Real token receiving would be implemented here
-                        Log.d(TAG, "Would receive real token, amount: $amount")
-                    } catch (e: Exception) {
-                        Log.w(TAG, "Failed to receive real token, using demo")
-                    }
-                } else {
-                    // Demo token receiving
-                    mockBalance += amount
-                    Log.d(TAG, "Demo token received, amount: $amount")
-                }
                 
+                // In real CDK implementation, tokens are auto-received when sent
+                // Here we're just validating and returning the amount
                 Result.success(amount)
+                
+            } catch (e: FfiException) {
+                Log.e(TAG, "CDK FFI error receiving token: ${e.message}")
+                Result.failure(e)
             } catch (e: Exception) {
                 Log.e(TAG, "Failed to receive token", e)
                 Result.failure(e)
@@ -492,46 +307,40 @@ class CashuService {
                     initializeWallet(DEFAULT_MINT_URL).getOrThrow()
                 }
                 
-                val mintQuote = if (isCdkAvailable && wallet != null) {
+                if (!isCdkAvailable || wallet == null) {
-                    try {
+                    return@withContext Result.failure(Exception("CDK not available"))
-                        // Real mint quote creation using CDK
-                        Log.d(TAG, "Creating real mint quote for $amount")
-                        
-                        val ffiMintQuote = wallet!!.mintQuote(
-                            amount = FfiAmount(amount.toULong()),
-                            description = description
-                        )
-                        
-                        Log.d(TAG, "Created real mint quote: ${ffiMintQuote.id}")
-                        
-                        // Convert FFI types to our domain types
-                        MintQuote(
-                            id = ffiMintQuote.id,
-                            amount = BigDecimal(ffiMintQuote.amount.value.toLong()),
-                            unit = ffiMintQuote.unit,
-                            request = ffiMintQuote.request,
-                            state = when (ffiMintQuote.state) {
-                                FfiMintQuoteState.UNPAID -> MintQuoteState.UNPAID
-                                FfiMintQuoteState.PAID -> MintQuoteState.PAID  
-                                FfiMintQuoteState.ISSUED -> MintQuoteState.ISSUED
-                            },
-                            expiry = Date(ffiMintQuote.expiry.toLong() * 1000), // Convert from seconds to milliseconds
-                            paid = ffiMintQuote.state == FfiMintQuoteState.PAID
-                        )
-                    } catch (e: FfiException) {
-                        Log.w(TAG, "CDK FFI error creating mint quote: ${e.message}")
-                        createDemoMintQuote(amount, description)
-                    } catch (e: Exception) {
-                        Log.w(TAG, "Failed to create real mint quote, using demo: ${e.message}")
-                        createDemoMintQuote(amount, description)
-                    }
-                } else {
-                    // Demo mint quote
-                    createDemoMintQuote(amount, description)
                 }
                 
+                Log.d(TAG, "Creating real mint quote for $amount")
+                
+                val ffiMintQuote = wallet!!.mintQuote(
+                    amount = FfiAmount(amount.toULong()),
+                    description = description ?: "Cashu mint"
+                )
+                
+                Log.d(TAG, "Created real mint quote: ${ffiMintQuote.id}")
+                
+                // Convert FFI types to our domain types
+                val mintQuote = MintQuote(
+                    id = ffiMintQuote.id,
+                    amount = BigDecimal(ffiMintQuote.amount.value.toLong()),
+                    unit = ffiMintQuote.unit,
+                    request = ffiMintQuote.request,
+                    state = when (ffiMintQuote.state) {
+                        FfiMintQuoteState.UNPAID -> MintQuoteState.UNPAID
+                        FfiMintQuoteState.PAID -> MintQuoteState.PAID  
+                        FfiMintQuoteState.ISSUED -> MintQuoteState.ISSUED
+                    },
+                    expiry = Date(ffiMintQuote.expiry.toLong() * 1000), // Convert from seconds to milliseconds
+                    paid = ffiMintQuote.state == FfiMintQuoteState.PAID
+                )
+                
                 Log.d(TAG, "Created mint quote: ${mintQuote.id}")
                 Result.success(mintQuote)
+                
+            } catch (e: FfiException) {
+                Log.e(TAG, "CDK FFI error creating mint quote: ${e.message}")
+                Result.failure(e)
             } catch (e: Exception) {
                 Log.e(TAG, "Failed to create mint quote", e)
                 Result.failure(e)
@@ -539,18 +348,6 @@ class CashuService {
         }
     }
     
-    private fun createDemoMintQuote(amount: Long, description: String?): MintQuote {
-        return MintQuote(
-            id = "demo_mint_${System.currentTimeMillis()}",
-            amount = BigDecimal(amount),
-            unit = "sat",
-            request = "lnbc${amount}n1demo_invoice_request",
-            state = MintQuoteState.UNPAID,
-            expiry = Date(System.currentTimeMillis() + 3600000), // 1 hour
-            paid = false
-        )
-    }
-    
     /**
      * Check if a mint quote has been paid and mint ecash
      */
@@ -561,22 +358,32 @@ class CashuService {
                     initializeWallet(DEFAULT_MINT_URL).getOrThrow()
                 }
                 
-                val success = if (isCdkAvailable && wallet != null) {
+                if (!isCdkAvailable || wallet == null) {
-                    try {
+                    return@withContext Result.failure(Exception("CDK not available"))
-                        // Real quote checking would be implemented here
-                        Log.d(TAG, "Would check real mint quote: $quoteId")
-                        false // Demo: not paid
-                    } catch (e: Exception) {
-                        Log.w(TAG, "Failed to check real quote, using demo")
-                        false
-                    }
-                } else {
-                    // Demo: simulate not paid
-                    false
                 }
                 
-                Log.d(TAG, "Mint quote $quoteId check result: $success")
+                // Check quote state
-                Result.success(success)
+                val quoteResponse = wallet!!.mintQuoteState(quoteId)
+                Log.d(TAG, "Checked mint quote $quoteId: ${quoteResponse.state}")
+                
+                if (quoteResponse.state == FfiMintQuoteState.PAID) {
+                    // Quote is paid, mint the tokens
+                    try {
+                        val mintedAmount = wallet!!.mint(quoteId, FfiSplitTarget.DEFAULT)
+                        Log.d(TAG, "Successfully minted ${mintedAmount.value} sats for quote $quoteId")
+                        Result.success(true)
+                    } catch (e: FfiException) {
+                        Log.w(TAG, "Failed to mint for paid quote: ${e.message}")
+                        Result.success(false)
+                    }
+                } else {
+                    // Quote not paid yet
+                    Result.success(false)
+                }
+                
+            } catch (e: FfiException) {
+                Log.e(TAG, "CDK FFI error checking mint quote: ${e.message}")
+                Result.failure(e)
             } catch (e: Exception) {
                 Log.e(TAG, "Failed to check mint quote", e)
                 Result.failure(e)
@@ -594,22 +401,34 @@ class CashuService {
                     initializeWallet(DEFAULT_MINT_URL).getOrThrow()
                 }
                 
-                val meltQuote = if (isCdkAvailable && wallet != null) {
+                if (!isCdkAvailable || wallet == null) {
-                    try {
+                    return@withContext Result.failure(Exception("CDK not available"))
-                        // Real melt quote creation would be implemented here
-                        Log.d(TAG, "Would create real melt quote")
-                        createDemoMeltQuote(invoice)
-                    } catch (e: Exception) {
-                        Log.w(TAG, "Failed to create real melt quote, using demo")
-                        createDemoMeltQuote(invoice)
-                    }
-                } else {
-                    // Demo melt quote
-                    createDemoMeltQuote(invoice)
                 }
                 
+                Log.d(TAG, "Creating real melt quote for invoice")
+                
+                val ffiMeltQuote = wallet!!.meltQuote(invoice)
+                
+                Log.d(TAG, "Created real melt quote: ${ffiMeltQuote.id}")
+                
+                // Convert FFI types to our domain types
+                val meltQuote = MeltQuote(
+                    id = ffiMeltQuote.id,
+                    amount = BigDecimal(ffiMeltQuote.amount.value.toLong()),
+                    feeReserve = BigDecimal(ffiMeltQuote.feeReserve.value.toLong()),
+                    unit = ffiMeltQuote.unit,
+                    request = invoice,
+                    state = MeltQuoteState.UNPAID, // MeltQuote doesn't have state, default to UNPAID
+                    expiry = Date(ffiMeltQuote.expiry.toLong() * 1000), // Convert from seconds to milliseconds
+                    paid = false // Default to unpaid until melt is called
+                )
+                
                 Log.d(TAG, "Created melt quote: ${meltQuote.id}")
                 Result.success(meltQuote)
+                
+            } catch (e: FfiException) {
+                Log.e(TAG, "CDK FFI error creating melt quote: ${e.message}")
+                Result.failure(e)
             } catch (e: Exception) {
                 Log.e(TAG, "Failed to create melt quote", e)
                 Result.failure(e)
@@ -617,31 +436,6 @@ class CashuService {
         }
     }
     
-    private fun createDemoMeltQuote(invoice: String): MeltQuote {
-        // Extract amount from invoice (simplified)
-        val amount = if (invoice.contains("lnbc")) {
-            try {
-                // Simple parsing for demo
-                100L // Default amount
-            } catch (e: Exception) {
-                100L
-            }
-        } else {
-            100L
-        }
-        
-        return MeltQuote(
-            id = "demo_melt_${System.currentTimeMillis()}",
-            amount = BigDecimal(amount),
-            feeReserve = BigDecimal(1), // 1 sat fee
-            unit = "sat",
-            request = invoice,
-            state = MeltQuoteState.UNPAID,
-            expiry = Date(System.currentTimeMillis() + 3600000), // 1 hour
-            paid = false
-        )
-    }
-    
     /**
      * Pay a Lightning invoice using ecash (melt)
      */
@@ -652,22 +446,24 @@ class CashuService {
                     initializeWallet(DEFAULT_MINT_URL).getOrThrow()
                 }
                 
-                val success = if (isCdkAvailable && wallet != null) {
+                if (!isCdkAvailable || wallet == null) {
-                    try {
+                    return@withContext Result.failure(Exception("CDK not available"))
-                        // Real payment would be implemented here
-                        Log.d(TAG, "Would pay real invoice with quote: $quoteId")
-                        true // Demo: simulate success
-                    } catch (e: Exception) {
-                        Log.w(TAG, "Failed to pay real invoice, using demo")
-                        true
-                    }
-                } else {
-                    // Demo: simulate successful payment
-                    true
                 }
                 
-                Log.d(TAG, "Invoice payment result: $success")
+                Log.d(TAG, "Paying invoice with melt quote: $quoteId")
+                
+                val meltResult = wallet!!.melt(quoteId)
+                
+                Log.d(TAG, "Invoice payment result: ${meltResult.state}")
+                
+                // FfiMelted.state is a String, check for success states
+                val success = meltResult.state.equals("paid", ignoreCase = true) || 
+                             meltResult.state.equals("success", ignoreCase = true)
                 Result.success(success)
+                
+            } catch (e: FfiException) {
+                Log.e(TAG, "CDK FFI error paying invoice: ${e.message}")
+                Result.failure(e)
             } catch (e: Exception) {
                 Log.e(TAG, "Failed to pay invoice", e)
                 Result.failure(e)
@@ -681,7 +477,7 @@ class CashuService {
     suspend fun decodeToken(token: String): Result<CashuToken> {
         return withContext(Dispatchers.IO) {
             try {
-                // Simple token parsing for both real and demo modes
+                // For now, do simple parsing - CDK might have better token parsing functions
                 val amount = parseTokenAmount(token)
                 val memo = parseTokenMemo(token)
                 
@@ -695,6 +491,7 @@ class CashuService {
                 
                 Log.d(TAG, "Decoded token: amount=$amount")
                 Result.success(cashuToken)
+                
             } catch (e: Exception) {
                 Log.e(TAG, "Failed to decode token", e)
                 Result.failure(e)
@@ -707,6 +504,8 @@ class CashuService {
      */
     fun cleanup() {
         try {
+            wallet?.destroy()
+            localStore?.destroy()
             wallet = null
             localStore = null
             isInitialized = false
@@ -726,6 +525,16 @@ class CashuService {
     
     // Helper functions
     
+    private fun getApplicationContext(): Context {
+        return try {
+            val activityThread = Class.forName("android.app.ActivityThread")
+            val currentApplication = activityThread.getMethod("currentApplication")
+            currentApplication.invoke(null) as Context
+        } catch (e: Exception) {
+            throw IllegalStateException("Could not get application context", e)
+        }
+    }
+    
     private fun extractMintName(url: String): String {
         return try {
             val host = url.substringAfter("://").substringBefore("/")
@@ -749,7 +558,8 @@ class CashuService {
                 }
                 token.startsWith("cashuA") -> {
                     // Real token parsing would be more complex
-                    1000L // Default for now
+                    // For now, return default
+                    1000L
                 }
                 else -> 1000L
             }

app/src/main/java/com/bitchat/android/wallet/ui/WalletOverview.kt

@@ -46,8 +46,6 @@ fun WalletOverview(
             .background(Color.Black)
             .padding(16.dp)
     ) {
-        // CDK Status Banner
-        CdkStatusBanner(activeMint = activeMint)
         
         Spacer(modifier = Modifier.height(16.dp))
         
@@ -89,120 +87,6 @@ fun WalletOverview(
     }
 }
 
-@Composable
-private fun CdkStatusBanner(activeMint: String?) {
-    val cashuService = CashuService.getInstance()
-    val isCdkAvailable = cashuService.isCdkAvailable()
-    
-    Card(
-        modifier = Modifier.fillMaxWidth(),
-        shape = RoundedCornerShape(8.dp),
-        colors = CardDefaults.cardColors(
-            containerColor = if (isCdkAvailable) Color(0xFF001a0f) else Color(0xFF1a1a00)
-        )
-    ) {
-        Column(
-            modifier = Modifier.padding(12.dp)
-        ) {
-            Row(
-                verticalAlignment = Alignment.CenterVertically
-            ) {
-                // CDK Logo/Icon
-                Card(
-                    shape = RoundedCornerShape(4.dp),
-                    colors = CardDefaults.cardColors(
-                        containerColor = if (isCdkAvailable) Color(0xFF00C851) else Color(0xFFFFA500)
-                    )
-                ) {
-                    Text(
-                        text = if (isCdkAvailable) "CDK" else "DEMO",
-                        color = Color.Black,
-                        fontSize = 10.sp,
-                        fontWeight = FontWeight.Bold,
-                        fontFamily = FontFamily.Monospace,
-                        modifier = Modifier.padding(horizontal = 4.dp, vertical = 2.dp)
-                    )
-                }
-                
-                Spacer(modifier = Modifier.width(8.dp))
-                
-                Column {
-                    Text(
-                        text = if (isCdkAvailable) "✅ Real Cashu Wallet Active" else "⚠️ Demo Mode Active",
-                        color = if (isCdkAvailable) Color(0xFF00C851) else Color(0xFFFFA500),
-                        fontSize = 12.sp,
-                        fontWeight = FontWeight.Bold,
-                        fontFamily = FontFamily.Monospace
-                    )
-                    
-                    activeMint?.let { mint ->
-                        Text(
-                            text = if (isCdkAvailable) "Connected to: ${extractMintName(mint)}" 
-                                  else "Demo wallet: ${extractMintName(mint)}",
-                            color = Color.Gray,
-                            fontSize = 10.sp,
-                            fontFamily = FontFamily.Monospace
-                        )
-                    }
-                }
-                
-                Spacer(modifier = Modifier.weight(1f))
-                
-                // Connection status
-                Icon(
-                    imageVector = if (isCdkAvailable) Icons.Filled.CheckCircle else Icons.Filled.Warning,
-                    contentDescription = if (isCdkAvailable) "CDK Available" else "Demo Mode",
-                    tint = if (isCdkAvailable) Color(0xFF00C851) else Color(0xFFFFA500),
-                    modifier = Modifier.size(16.dp)
-                )
-            }
-            
-            Spacer(modifier = Modifier.height(8.dp))
-            
-            // Technical details
-            if (isCdkAvailable) {
-                Text(
-                    text = "• Using Cashu Development Kit (CDK) FFI bindings",
-                    color = Color.Gray,
-                    fontSize = 9.sp,
-                    fontFamily = FontFamily.Monospace
-                )
-                Text(
-                    text = "• Real Bitcoin Lightning Network integration",
-                    color = Color.Gray,
-                    fontSize = 9.sp,
-                    fontFamily = FontFamily.Monospace
-                )
-                Text(
-                    text = "• Actual ecash minting and melting operations",
-                    color = Color.Gray,
-                    fontSize = 9.sp,
-                    fontFamily = FontFamily.Monospace
-                )
-            } else {
-                Text(
-                    text = "• CDK not available on this device architecture",
-                    color = Color.Gray,
-                    fontSize = 9.sp,
-                    fontFamily = FontFamily.Monospace
-                )
-                Text(
-                    text = "• Running in demonstration mode with simulated operations",
-                    color = Color.Gray,
-                    fontSize = 9.sp,
-                    fontFamily = FontFamily.Monospace
-                )
-                Text(
-                    text = "• No real Bitcoin transactions - for testing only",
-                    color = Color.Gray,
-                    fontSize = 9.sp,
-                    fontFamily = FontFamily.Monospace
-                )
-            }
-        }
-    }
-}
-
 private fun extractMintName(url: String): String {
     return try {
         val host = url.substringAfter("://").substringBefore("/")

app/src/main/java/com/bitchat/android/wallet/viewmodel/WalletViewModel.kt

@@ -114,7 +114,7 @@ class WalletViewModel(application: Application) : AndroidViewModel(application)
                     if (activeMintUrl.isNullOrEmpty()) {
                         Log.d(TAG, "No active mint, setting default")
                         // Use default mint URL from CashuService
-                        cashuService.initializeWallet("https://mint.minibits.cash/Bitcoin").onSuccess {
+                        cashuService.initializeWallet("https://testnut.cashu.space").onSuccess {
                             refreshBalance()
                         }
                     }