Implement use case to parse user agent.

vector/src/main/java/im/vector/app/features/settings/devices/v2/DeviceUserAgent.kt

@@ -24,23 +24,31 @@ data class DeviceUserAgent(
          */
         val deviceType: DeviceType,
         /**
-         * i.e. Google Pixel 6
+         * i.e. Google
          */
-        val deviceModel: String?,
+        val deviceManufacturer: String? = null,
+        /**
+         * i.e. Pixel 6
+         */
+        val deviceModel: String? = null,
         /**
          * i.e. Android
          */
-        val deviceOperatingSystem: String?,
+        val deviceOperatingSystem: String? = null,
         /**
          * i.e. Android 11
          */
-        val deviceOperatingSystemVersion: String?,
+        val deviceOperatingSystemVersion: String? = null,
         /**
          * i.e. Element Nightly
          */
-        val clientName: String?,
+        val clientName: String? = null,
         /**
          * i.e. 1.5.0
          */
-        val clientVersion: String?,
+        val clientVersion: String? = null,
+        /**
+         * i.e. Chrome
+         */
+        val browser: String? = null,
 )

vector/src/main/java/im/vector/app/features/settings/devices/v2/ParseDeviceUserAgentUseCase.kt

@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2022 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.app.features.settings.devices.v2
+
+import im.vector.app.features.settings.devices.v2.list.DeviceType
+import javax.inject.Inject
+
+class ParseDeviceUserAgentUseCase @Inject constructor() {
+
+    fun execute(userAgent: String): DeviceUserAgent {
+        return when {
+            userAgent.contains(ANDROID_KEYWORD) -> parseAndroidUserAgent(userAgent)
+            userAgent.contains(IOS_KEYWORD) -> parseIosUserAgent(userAgent)
+            userAgent.contains(DESKTOP_KEYWORD) -> parseDesktopUserAgent(userAgent)
+            userAgent.contains(WEB_KEYWORD) -> parseWebUserAgent(userAgent)
+            else -> createUnknownUserAgent()
+        }
+    }
+
+    private fun parseAndroidUserAgent(userAgent: String): DeviceUserAgent {
+        val appName = userAgent.substringBefore("/")
+        val appVersion = userAgent.substringAfter("/").substringBefore(" (")
+        val deviceInfoSegments = userAgent.substringAfter("(").substringBefore(")").split("; ")
+        val deviceManufacturer = deviceInfoSegments.getOrNull(0)
+        val deviceModel = deviceInfoSegments.getOrNull(1)
+        val deviceOsInfo = deviceInfoSegments.getOrNull(2)?.takeIf { it.startsWith("Android") }
+        val deviceOs = deviceOsInfo?.substringBefore(" ")
+        val deviceOsVersion = deviceOsInfo?.substringAfter(" ")
+        return DeviceUserAgent(DeviceType.MOBILE, deviceManufacturer, deviceModel, deviceOs, deviceOsVersion, appName, appVersion)
+    }
+
+    private fun parseIosUserAgent(userAgent: String): DeviceUserAgent {
+        val appName = userAgent.substringBefore("/")
+        val appVersion = userAgent.substringAfter("/").substringBefore(" (")
+        val deviceInfoSegments = userAgent.substringAfter("(").substringBefore(")").split("; ")
+        val deviceManufacturer = "Apple"
+        val deviceModel = deviceInfoSegments.getOrNull(0)
+        val deviceOs = deviceInfoSegments.getOrNull(1)?.substringBefore(" ")
+        val deviceOsVersion = deviceInfoSegments.getOrNull(1)?.substringAfter(" ")
+        return DeviceUserAgent(DeviceType.MOBILE, deviceManufacturer, deviceModel, deviceOs, deviceOsVersion, appName, appVersion)
+    }
+
+    private fun parseDesktopUserAgent(userAgent: String): DeviceUserAgent {
+        val appInfoSegments = userAgent.substringBeforeLast(" ").substringAfterLast(" ").split("/")
+        val appName = appInfoSegments.getOrNull(0)
+        val appVersion = appInfoSegments.getOrNull(1)
+        val deviceInfoSegments = userAgent.substringAfter("(").substringBefore(")").split("; ")
+        val deviceOs = deviceInfoSegments.getOrNull(1)?.substringBeforeLast(" ")
+        val deviceOsVersion = deviceInfoSegments.getOrNull(1)?.substringAfterLast(" ")
+        return DeviceUserAgent(DeviceType.DESKTOP, null, null, deviceOs, deviceOsVersion, appName, appVersion)
+    }
+
+    private fun parseWebUserAgent(userAgent: String): DeviceUserAgent {
+        return parseDesktopUserAgent(userAgent).copy(
+                deviceType = DeviceType.WEB
+        )
+    }
+
+    private fun createUnknownUserAgent(): DeviceUserAgent {
+        return DeviceUserAgent(DeviceType.UNKNOWN)
+    }
+
+    companion object {
+        // Element dbg/1.5.0-dev (Xiaomi; Mi 9T; Android 11; RKQ1.200826.002 test-keys; Flavour GooglePlay; MatrixAndroidSdk2 1.5.0)
+        private val ANDROID_KEYWORD = "; MatrixAndroidSdk2"
+
+        // Element/1.8.21 (iPhone XS Max; iOS 15.2; Scale/3.00)
+        private val IOS_KEYWORD = "; iOS "
+
+        // Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) ElementNightly/2022091301 Chrome/104.0.5112.102 Electron/20.1.1 Safari/537.36
+        private val DESKTOP_KEYWORD = " Electron/"
+
+        // Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.36
+        private val WEB_KEYWORD = "Mozilla/"
+    }
+}