added DefaultPermissionProvider

Android/azuremobile.android/src/main/java/com/azure/mobile/azuremobileandroid/DefaultPermissionProvider.kt

@@ -0,0 +1,91 @@
+package com.azure.mobile.azuremobileandroid
+
+import com.azure.data.model.DataError
+import com.azure.data.model.Permission
+import com.azure.data.model.PermissionMode
+import com.azure.data.service.PermissionProvider
+import com.azure.data.service.PermissionProviderConfiguration
+import com.azure.data.service.PermissionProviderError
+import com.azure.data.service.Response
+import com.google.gson.Gson
+import okhttp3.*
+import java.io.IOException
+
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License.
+ */
+
+data class PermissionRequest(val databaseId: String, val collectionId: String, val documentId: String?, val tokenDuration: Int, val permissionMode: PermissionMode)
+
+class DefaultPermissionProvider(private val baseUrlBuilder: HttpUrl.Builder, override var configuration: PermissionProviderConfiguration? = PermissionProviderConfiguration.default, private val client: OkHttpClient = OkHttpClient.Builder().build()) : PermissionProvider {
+
+    override fun getPermissionForCollection(collectionId: String, databaseId: String, permissionMode: PermissionMode, completion: (Response<Permission>) -> Unit) {
+
+        try {
+
+            val permissionRequest = PermissionRequest(databaseId, collectionId, null, configuration!!.defaultTokenDuration.toInt(), permissionMode)
+
+            val url = baseUrlBuilder.addPathSegment("api/data/permission")
+                    .build()
+
+            val gson = Gson()
+
+            val request = Request.Builder()
+                    .url(url)
+                    .addHeader("Content-Type", "application/json")
+                    .post(RequestBody.create(MediaType.parse("application/json"), gson.toJson(permissionRequest)))
+                    .build()
+
+            client.newCall(request)
+                    .enqueue(object : Callback {
+
+                        override fun onFailure(call: Call, ex: IOException) {
+
+                            return completion(Response(DataError(ex), request))
+                        }
+
+                        @Throws(IOException::class)
+                        override fun onResponse(call: Call, response: okhttp3.Response) {
+
+                            try {
+                                val body = response.body()
+                                        ?: return completion(Response(DataError(PermissionProviderError.GetPermissionFailed)))
+
+                                val json = body.string()
+                                val permission = gson.fromJson(json, Permission::class.java)
+
+                                completion(Response(permission))
+
+                            } catch (ex: Exception) {
+
+                                completion(Response(DataError(ex), request, response))
+                            }
+                        }
+                    })
+
+        } catch (ex: Exception) {
+            completion(Response(DataError(PermissionProviderError.GetPermissionFailed)))
+        }
+    }
+
+    override fun getPermissionForDocument(documentId: String, collectionId: String, databaseId: String, permissionMode: PermissionMode, completion: (Response<Permission>) -> Unit) {
+        TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
+    }
+
+    override fun getPermissionForAttachment(attachmentId: String, documentId: String, collectionId: String, databaseId: String, permissionMode: PermissionMode, completion: (Response<Permission>) -> Unit) {
+        TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
+    }
+
+    override fun getPermissionForStoredProcedure(storedProcedureId: String, collectionId: String, databaseId: String, permissionMode: PermissionMode, completion: (Response<Permission>) -> Unit) {
+        TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
+    }
+
+    override fun getPermissionForUserDefinedFunction(functionId: String, collectionId: String, databaseId: String, permissionMode: PermissionMode, completion: (Response<Permission>) -> Unit) {
+        TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
+    }
+
+    override fun getPermissionForTrigger(triggerId: String, collectionId: String, databaseId: String, permissionMode: PermissionMode, completion: (Response<Permission>) -> Unit) {
+        TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
+    }
+}