BIT-332: Launch web view for hcaptchca (#73)

app/src/main/java/com/x8bit/bitwarden/data/auth/datasource/network/util/LoginResultExtensions.kt

@@ -0,0 +1,32 @@
+package com.x8bit.bitwarden.data.auth.datasource.network.util
+
+import android.content.Intent
+import android.net.Uri
+import com.x8bit.bitwarden.data.auth.datasource.network.model.LoginResult
+import kotlinx.serialization.json.buildJsonObject
+import kotlinx.serialization.json.put
+import java.util.Base64
+import java.util.Locale
+
+/**
+ * Generates an [Intent] to display a CAPTCHA challenge for Bitwarden authentication.
+ */
+fun LoginResult.CaptchaRequired.generateIntentForCaptcha(): Intent {
+    val json = buildJsonObject {
+        put(key = "siteKey", value = captchaId)
+        put(key = "locale", value = Locale.getDefault().toString())
+        put(key = "callbackUri", value = "bitwarden://captcha-callback")
+        put(key = "captchaRequiredText", value = "Captcha required")
+    }
+    val base64Data = Base64
+        .getEncoder()
+        .encodeToString(
+            json
+                .toString()
+                .toByteArray(Charsets.UTF_8),
+        )
+    val parentParam = "bitwarden%3A%2F%2Fcaptcha-callback"
+    val url = "https://vault.bitwarden.com/captcha-mobile-connector.html" +
+        "?data=$base64Data&parent=$parentParam&v=1"
+    return Intent(Intent.ACTION_VIEW, Uri.parse(url))
+}

app/src/main/java/com/x8bit/bitwarden/ui/auth/feature/login/LoginScreen.kt

@@ -14,6 +14,7 @@ import androidx.compose.runtime.Composable
 import androidx.compose.runtime.getValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.platform.testTag
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
@@ -21,6 +22,7 @@ import androidx.hilt.navigation.compose.hiltViewModel
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import com.x8bit.bitwarden.R
 import com.x8bit.bitwarden.ui.platform.base.util.EventsEffect
+import com.x8bit.bitwarden.ui.platform.base.util.IntentHandler
 import com.x8bit.bitwarden.ui.platform.components.BitwardenTextField
 
 /**
@@ -31,11 +33,13 @@ import com.x8bit.bitwarden.ui.platform.components.BitwardenTextField
 fun LoginScreen(
     onNavigateToLanding: () -> Unit,
     viewModel: LoginViewModel = hiltViewModel(),
+    intentHandler: IntentHandler = IntentHandler(context = LocalContext.current),
 ) {
     val state by viewModel.stateFlow.collectAsStateWithLifecycle()
     EventsEffect(viewModel = viewModel) { event ->
         when (event) {
             LoginEvent.NavigateToLanding -> onNavigateToLanding()
+            is LoginEvent.NavigateToCaptcha -> intentHandler.startActivity(intent = event.intent)
         }
     }
 

app/src/main/java/com/x8bit/bitwarden/ui/auth/feature/login/LoginViewModel.kt

@@ -1,9 +1,11 @@
 package com.x8bit.bitwarden.ui.auth.feature.login
 
+import android.content.Intent
 import android.os.Parcelable
 import androidx.lifecycle.SavedStateHandle
 import androidx.lifecycle.viewModelScope
 import com.x8bit.bitwarden.data.auth.datasource.network.model.LoginResult
+import com.x8bit.bitwarden.data.auth.datasource.network.util.generateIntentForCaptcha
 import com.x8bit.bitwarden.data.auth.repository.AuthRepository
 import com.x8bit.bitwarden.ui.platform.base.BaseViewModel
 import dagger.hilt.android.lifecycle.HiltViewModel
@@ -60,8 +62,13 @@ class LoginViewModel @Inject constructor(
                 LoginResult.Error -> Unit
                 // No action required on success, root nav will navigate to logged in state
                 LoginResult.Success -> Unit
-                // TODO: launch intent with captcha URL BIT-399
-                is LoginResult.CaptchaRequired -> Unit
+                is LoginResult.CaptchaRequired -> {
+                    sendEvent(
+                        event = LoginEvent.NavigateToCaptcha(
+                            intent = result.generateIntentForCaptcha(),
+                        ),
+                    )
+                }
             }
         }
     }
@@ -97,6 +104,11 @@ sealed class LoginEvent {
      * Navigates to the Landing screen.
      */
     data object NavigateToLanding : LoginEvent()
+
+    /**
+     * Navigates to the captcha verification screen.
+     */
+    data class NavigateToCaptcha(val intent: Intent) : LoginEvent()
 }
 
 /**

app/src/main/java/com/x8bit/bitwarden/ui/platform/base/util/IntentHandler.kt

@@ -0,0 +1,17 @@
+package com.x8bit.bitwarden.ui.platform.base.util
+
+import android.content.Context
+import android.content.Intent
+
+/**
+ * A utility class for simplifying the handling of Android Intents within a given context.
+ */
+class IntentHandler(private val context: Context) {
+
+    /**
+     * Start an activity using the provided [Intent].
+     */
+    fun startActivity(intent: Intent) {
+        context.startActivity(intent)
+    }
+}