feat: adds bt http client

example/src/main/java/com/basistheory/android/example/view/dual_write/DualWriteFragment.kt

@@ -0,0 +1,80 @@
+package com.basistheory.android.example.view.dual_write
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.viewModels
+import com.basistheory.android.example.databinding.FragmentDualWriteBinding
+import com.basistheory.android.example.viewmodel.CardFragmentViewModel
+import com.basistheory.android.service.HttpMethod
+
+class DualWriteFragment : Fragment() {
+    private val binding: FragmentDualWriteBinding by lazy {
+        FragmentDualWriteBinding.inflate(layoutInflater)
+    }
+
+    private val viewModel: CardFragmentViewModel by viewModels()
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View {
+        super.onCreateView(inflater, container, savedInstanceState)
+        binding.lifecycleOwner = this
+        binding.viewModel = viewModel
+
+        binding.cvc.cardNumberElement = binding.cardNumber
+
+        binding.postButton.setOnClickListener { createPaymentMethod() }
+        binding.autofillButton.setOnClickListener { autofill() }
+
+        setValidationListeners()
+
+        return binding.root
+    }
+
+
+    private fun autofill() {
+        binding.cardNumber.setText("4242424242424242")
+        binding.expirationDate.setText("12/25")
+        binding.cvc.setText("123")
+    }
+
+    private fun createPaymentMethod() = viewModel.client.post(
+        "https://api.stripe.com/v1/payment_methods", headers = mapOf(
+            "Authorization" to "Bearer {{ STRIPE'S API KEY}}",
+            "Content-Type" to "application/x-www-form-urlencoded"
+        ), object {
+            val type = "card"
+            val billing_details = object {
+                val name = "Peter Panda"
+            }
+            val card = object {
+                val number = binding.cardNumber
+                val exp_month = binding.expirationDate.month()
+                val exp_year = binding.expirationDate.year()
+                val cvc = binding.cvc
+            }
+        }
+    ).observe(viewLifecycleOwner) {}
+
+    /**
+     * demonstrates how an application could potentially wire up custom validation behaviors
+     */
+    private fun setValidationListeners() {
+        binding.cardNumber.addChangeEventListener {
+            viewModel.cardNumber.observe(it)
+        }
+
+        binding.expirationDate.addChangeEventListener {
+            viewModel.cardExpiration.observe(it)
+        }
+
+        binding.cvc.addChangeEventListener {
+            viewModel.cardCvc.observe(it)
+        }
+    }
+}

example/src/main/java/com/basistheory/android/example/viewmodel/ApiViewModel.kt

@@ -10,9 +10,10 @@ import com.basistheory.android.example.BuildConfig
 import com.basistheory.android.example.R
 import com.basistheory.android.example.util.prettyPrintJson
 import com.basistheory.android.service.BasisTheoryElements
+import com.basistheory.android.service.HttpMethod
 import com.basistheory.android.service.ProxyRequest
 
-open class ApiViewModel(application: Application): AndroidViewModel(application) {
+open class ApiViewModel(application: Application) : AndroidViewModel(application) {
     private val _errorMessage = MutableLiveData<String?>(null)
     val errorMessage: LiveData<String?>
         get() = _errorMessage
@@ -30,6 +31,74 @@ open class ApiViewModel(application: Application): AndroidViewModel(application)
         .apiKey(BuildConfig.BASIS_THEORY_API_KEY)
         .build()
 
+
+    val client = Client()
+
+    inner class Client {
+        fun post(
+            url: String,
+            headers: Map<String, String>,
+            body: Any
+        ): LiveData<Any> = performRequest(HttpMethod.POST, url, headers, body)
+
+        fun get(
+            url: String,
+            headers: Map<String, String>
+        ): LiveData<Any> = performRequest(HttpMethod.GET, url, headers, null)
+
+        fun put(
+            url: String,
+            headers: Map<String, String>,
+            body: Any
+        ): LiveData<Any> = performRequest(HttpMethod.PUT, url, headers, body)
+
+        fun patch(
+            url: String,
+            headers: Map<String, String>,
+            body: Any
+        ): LiveData<Any> = performRequest(HttpMethod.PATCH, url, headers, body)
+
+        fun delete(
+            url: String,
+            headers: Map<String, String>
+        ): LiveData<Any> = performRequest(HttpMethod.DELETE, url, headers, null)
+
+
+        private fun performRequest(
+            method: HttpMethod,
+            url: String,
+            headers: Map<String, String>,
+            body: Any?
+        ): LiveData<Any> = liveData {
+            _errorMessage.value = null
+            _result.value = null
+
+            runCatching {
+                when (method) {
+                    HttpMethod.GET -> bt.client.get(url, headers)
+                    HttpMethod.POST -> bt.client.post(url, body!!, headers)
+                    HttpMethod.PUT -> bt.client.put(url, body!!, headers)
+                    HttpMethod.PATCH -> bt.client.patch(url, body!!, headers)
+                    HttpMethod.DELETE -> bt.client.delete(url, headers)
+                }
+            }.fold(
+                onSuccess = {
+                    if (it != null) {
+                        _result.value = it.prettyPrintJson()
+                        emit(it)
+                    }
+                },
+                onFailure = {
+                    _errorMessage.value = getApplication<Application>()
+                        .resources
+                        .getString(R.string.tokenize_error, it)
+                }
+            )
+        }
+
+    }
+
+
     fun tokenize(payload: Any): LiveData<Any> = liveData {
         _errorMessage.value = null
         _result.value = null

example/src/main/res/layout/fragment_dual_write.xml

@@ -0,0 +1,109 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <data>
+
+        <import type="android.view.View" />
+
+        <variable
+            name="viewModel"
+            type="com.basistheory.android.example.viewmodel.CardFragmentViewModel" />
+    </data>
+
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        tools:context="com.basistheory.android.example.view.dual_write.DualWriteFragment">
+
+        <ScrollView
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:background="@color/white">
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_margin="20dp"
+                android:orientation="vertical">
+
+                <com.basistheory.android.view.CardNumberElement
+                    android:id="@+id/card_number"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:background="@drawable/rounded_edit_text"
+                    android:padding="5dp"
+                    android:hint="@string/card_number"
+                    android:textColor="@{ viewModel.cardNumber.isInvalid ? @color/red : @color/gray_800 }" />
+
+                <com.basistheory.android.view.CardExpirationDateElement
+                    android:id="@+id/expiration_date"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="20dp"
+                    android:background="@drawable/rounded_edit_text"
+                    android:padding="5dp"
+                    android:hint="@string/expiration_date"
+                    android:textColor="@{ viewModel.cardExpiration.isInvalid ? @color/red : @color/gray_800 }" />
+
+                <com.basistheory.android.view.CardVerificationCodeElement
+                    android:id="@+id/cvc"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="20dp"
+                    android:background="@drawable/rounded_edit_text"
+                    android:padding="5dp"
+                    android:hint="@string/cvc"
+                    android:textColor="@{ viewModel.cardCvc.isInvalid ? @color/red : @color/gray_800 }" />
+
+                <LinearLayout
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:orientation="horizontal">
+
+                    <Button
+                        android:id="@+id/post_button"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:layout_marginTop="20dp"
+                        android:backgroundTint="@color/primary"
+                        android:enabled="@{ viewModel.canSubmit }"
+                        android:text="@string/post" />
+
+                    <Button
+                        android:id="@+id/autofill_button"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:layout_marginStart="20dp"
+                        android:layout_marginTop="20dp"
+                        android:backgroundTint="@color/primary"
+                        android:text="@string/autofill" />
+
+                </LinearLayout>
+
+                <TextView
+                    android:id="@+id/error_message"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="20dp"
+                    android:fontFamily="monospace"
+                    android:text="@{ viewModel.errorMessage }"
+                    android:textColor="@color/red"
+                    android:visibility="@{ viewModel.errorMessage != null ? View.VISIBLE : View.GONE }" />
+
+                <TextView
+                    android:id="@+id/result"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="20dp"
+                    android:fontFamily="monospace"
+                    android:text="@{ viewModel.result }"
+                    android:visibility="@{ viewModel.result != null ? View.VISIBLE : View.GONE }" />
+
+            </LinearLayout>
+
+        </ScrollView>
+
+    </androidx.constraintlayout.widget.ConstraintLayout>
+
+</layout>

example/src/main/res/menu/navigation_menu.xml

@@ -27,5 +27,9 @@
         <item
             android:id="@+id/nav_raw_proxy_response"
             android:title="@string/title_raw_proxy_response" />
+
+        <item
+            android:id="@+id/nav_dual_write"
+            android:title="@string/title_dual_write" />
     </group>
 </menu>

example/src/main/res/navigation/mobile_navigation.xml

@@ -47,4 +47,10 @@
         android:label="@string/title_raw_proxy_response"
         tools:layout="@layout/fragment_raw_proxy_response" />
 
+    <fragment
+        android:id="@+id/nav_dual_write"
+        android:name="com.basistheory.android.example.view.dual_write.DualWriteFragment"
+        android:label="@string/title_dual_write"
+        tools:layout="@layout/fragment_dual_write" />
+
 </navigation>

example/src/main/res/values/strings.xml

@@ -8,6 +8,7 @@
     <string name="title_reveal">Reveal Data</string>
     <string name="title_styling">Custom Styling</string>
     <string name="title_raw_proxy_response">Raw Proxy Response</string>
+    <string name="title_dual_write">HTTP client</string>
 
     <string name="autofill">Autofill</string>
     <string name="tokenize">Tokenize</string>
@@ -31,4 +32,12 @@
     <string name="password">Password</string>
     <string name="phone_number">Phone Number</string>
     <string name="pin">PIN</string>
+
+
+
+    <string name="post">POST</string>
+    <string name="get">GET</string>
+    <string name="delete">DELETE</string>
+    <string name="patch">PATCH</string>
+    <string name="put">PUT</string>
 </resources>

lib/build.gradle

@@ -80,6 +80,7 @@ dependencies {
     testImplementation 'io.strikt:strikt-core:0.34.1'
     testImplementation 'com.github.javafaker:javafaker:1.0.2'
     testImplementation 'io.mockk:mockk:1.13.5'
+    testImplementation("com.squareup.okhttp3:mockwebserver:4.11.0")
 }
 
 configurations.all {

lib/src/main/java/com/basistheory/android/service/BasisTheoryElements.kt

@@ -1,13 +1,13 @@
 package com.basistheory.android.service
 
+import HttpClient
 import com.basistheory.CreateSessionResponse
 import com.basistheory.CreateTokenRequest
 import com.basistheory.CreateTokenResponse
 import com.basistheory.Token
 import com.basistheory.android.model.ElementValueReference
-import com.basistheory.android.util.isPrimitiveType
-import com.basistheory.android.util.toMap
-import com.basistheory.android.util.transformResponseToValueReferences
+import com.basistheory.android.util.*
+import com.basistheory.android.util.getElementsValues
 import com.basistheory.android.util.replaceElementRefs
 import com.basistheory.android.util.tryGetTextToTokenize
 import com.basistheory.android.view.TextElement
@@ -20,16 +20,13 @@ class BasisTheoryElements internal constructor(
     private val dispatcher: CoroutineDispatcher = Dispatchers.IO
 ) {
     val proxy: ProxyApi = apiClientProvider.getProxyApi(dispatcher)
+    val client = HttpClient(dispatcher)
 
     @JvmOverloads
     suspend fun tokenize(body: Any, apiKeyOverride: String? = null): Any =
         withContext(dispatcher) {
             val tokenizeApiClient = apiClientProvider.getTokenizeApi(apiKeyOverride)
-            val request =
-                if (body::class.java.isPrimitiveType()) body
-                else if (body is TextElement) body.getTransformedText()
-                else if (body is ElementValueReference) body.getValue()
-                else replaceElementRefs(body)
+            val request = getElementsValues(body)
 
             tokenizeApiClient.tokenize(request)
         }