Define abstractions

storage-api/src/main/java/com/omh/android/storage/api/OmhStorageClient.kt

@@ -0,0 +1,12 @@
+package com.omh.android.storage.api
+
+import android.content.Context
+
+interface OmhStorageClient {
+
+    interface Builder {
+        fun build(context: Context): OmhStorageClient
+    }
+
+    fun setupAccessToken(token: String)
+}

storage-api/src/main/java/com/omh/android/storage/api/OmhStorageFactory.kt

@@ -0,0 +1,7 @@
+package com.omh.android.storage.api
+
+import android.content.Context
+
+interface OmhStorageFactory {
+    fun getStorageClient(context: Context): OmhStorageClient
+}

storage-api/src/main/java/com/omh/android/storage/api/OmhStorageProvider.kt

@@ -0,0 +1,16 @@
+package com.omh.android.storage.api
+
+import android.content.Context
+import kotlin.reflect.KClass
+
+object OmhStorageProvider {
+
+    private const val NGMS_ADDRESS = "com.omh.android.storage.api.drive.nongms.OmhStorageFactoryImpl"
+
+    @SuppressWarnings("SwallowedException")
+    fun provideStorageClient(context: Context): OmhStorageClient {
+        val clazz: KClass<out Any> = Class.forName(NGMS_ADDRESS).kotlin
+        val omhStorageFactory = clazz.objectInstance as OmhStorageFactory
+        return omhStorageFactory.getStorageClient(context)
+    }
+}

storage-api/src/main/java/com/omh/android/storage/api/data/datasource/network/FilesFoldersNetworkDataSource.kt

@@ -1,5 +1,7 @@
 package com.omh.android.storage.api.data.datasource.network
 
+import com.omh.android.storage.api.data.model.RemoteFileOrFolder
+
 interface FilesFoldersNetworkDataSource {
-    fun getAll()
+    fun getAll(): List<RemoteFileOrFolder>
 }

storage-api/src/main/java/com/omh/android/storage/api/data/mapper/DataMappers.kt

@@ -1 +1,32 @@
 package com.omh.android.storage.api.data.mapper
+
+import com.omh.android.storage.api.data.model.RemoteFile
+import com.omh.android.storage.api.data.model.RemoteFileOrFolder
+import com.omh.android.storage.api.data.model.RemoteFolder
+import com.omh.android.storage.api.domain.model.File
+import com.omh.android.storage.api.domain.model.FileOrFolder
+import com.omh.android.storage.api.domain.model.Folder
+
+fun fromFilesFoldersRemoteListToDomain(inputList: List<RemoteFileOrFolder>): List<FileOrFolder> {
+    val outputList = mutableListOf<FileOrFolder>()
+    if (inputList.isEmpty()) {
+        return outputList
+    }
+    for (gDriveFileOrFolder in inputList) {
+        outputList.add(
+            if (gDriveFileOrFolder is RemoteFile) {
+                File(
+                    gDriveFileOrFolder.name,
+                    gDriveFileOrFolder.ext,
+                    gDriveFileOrFolder.lastModDate
+                )
+            } else {
+                Folder(
+                    (gDriveFileOrFolder as RemoteFolder).name,
+                    gDriveFileOrFolder.lastModDate
+                )
+            }
+        )
+    }
+    return outputList
+}

storage-api/src/main/java/com/omh/android/storage/api/data/model/DataModel.kt

@@ -1 +1,14 @@
 package com.omh.android.storage.api.data.model
+
+interface RemoteFileOrFolder
+
+data class RemoteFile(
+    val name: String = "",
+    val ext: String = "",
+    val lastModDate: Long = 0L
+) : RemoteFileOrFolder
+
+data class RemoteFolder(
+    val name: String = "",
+    val lastModDate: Long = 0L
+) : RemoteFileOrFolder

storage-api/src/main/java/com/omh/android/storage/api/data/repository/FilesFoldersDataRepository.kt

@@ -0,0 +1,13 @@
+package com.omh.android.storage.api.data.repository
+
+import com.omh.android.storage.api.data.datasource.network.FilesFoldersNetworkDataSource
+import com.omh.android.storage.api.data.mapper.fromFilesFoldersRemoteListToDomain
+import com.omh.android.storage.api.domain.abstraction.FilesFoldersRepository
+
+class FilesFoldersDataRepository(
+    private val networkDataSource: FilesFoldersNetworkDataSource
+) : FilesFoldersRepository {
+    override fun getAll() = fromFilesFoldersRemoteListToDomain(
+        networkDataSource.getAll()
+    )
+}

storage-api/src/main/java/com/omh/android/storage/api/domain/abstraction/FilesFoldersRepository.kt

@@ -1,5 +1,7 @@
 package com.omh.android.storage.api.domain.abstraction
 
+import com.omh.android.storage.api.domain.model.FileOrFolder
+
 interface FilesFoldersRepository {
-    fun getAll()
+    fun getAll(): List<FileOrFolder>
 }

storage-api/src/main/java/com/omh/android/storage/api/domain/model/DomainModel.kt

@@ -1 +1,17 @@
 package com.omh.android.storage.api.domain.model
+
+interface FileOrFolder {
+    val name: String
+    val modificationDate: Long
+}
+
+data class File(
+    override val name: String,
+    val extension: String,
+    override val modificationDate: Long
+) : FileOrFolder
+
+data class Folder(
+    override val name: String,
+    override val modificationDate: Long
+) : FileOrFolder

storage-api/src/main/java/com/omh/android/storage/api/domain/usecase/GetAllFilesAndFolders.kt

@@ -1,5 +1,7 @@
 package com.omh.android.storage.api.domain.usecase
 
+import com.omh.android.storage.api.domain.model.FileOrFolder
+
 interface GetAllFilesAndFolders {
-    fun execute()
+    fun execute(): List<FileOrFolder>
 }

storage-api/src/main/java/com/omh/android/storage/api/domain/usecase/GetAllFilesAndFoldersUseCase.kt

@@ -0,0 +1,9 @@
+package com.omh.android.storage.api.domain.usecase
+
+import com.omh.android.storage.api.domain.abstraction.FilesFoldersRepository
+
+class GetAllFilesAndFoldersUseCase(
+    private val repository: FilesFoldersRepository
+) : GetAllFilesAndFolders {
+    override fun execute() = repository.getAll()
+}