Able to retrieve an access token. Next implement fetching all songs. I left a TODO.

app/app.iml

@@ -64,6 +64,7 @@
     <output-test url="file://$MODULE_DIR$/build/intermediates/javac/debugUnitTest/classes" />
     <exclude-output />
     <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src/main/cpp" isTestSource="false" />
       <sourceFolder url="file://$MODULE_DIR$/build/generated/ap_generated_sources/debug/out" isTestSource="false" generated="true" />
       <sourceFolder url="file://$MODULE_DIR$/build/generated/aidl_source_output_dir/debug/compileDebugAidl/out" isTestSource="false" generated="true" />
       <sourceFolder url="file://$MODULE_DIR$/build/generated/source/buildConfig/debug" isTestSource="false" generated="true" />
@@ -125,7 +126,6 @@
       <sourceFolder url="file://$MODULE_DIR$/src/test/jni" isTestSource="true" />
       <sourceFolder url="file://$MODULE_DIR$/src/test/rs" isTestSource="true" />
       <sourceFolder url="file://$MODULE_DIR$/src/test/shaders" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/main/cpp" isTestSource="false" />
       <excludeFolder url="file://$MODULE_DIR$/.cxx" />
       <excludeFolder url="file://$MODULE_DIR$/.externalNativeBuild" />
       <excludeFolder url="file://$MODULE_DIR$/build" />

app/src/main/cpp/CMakeLists.txt

@@ -15,13 +15,16 @@ cmake_minimum_required(VERSION 3.4.1)
 
 set (SOURCES
         Demo.cpp
+        SongRepository.cpp
         Tok.cpp
-        )
+)
+
 set (HEADERS
         model/Song.h
         model/User.h
+        SongRepository.h
         Tok.h
-        )
+)
 
 set(JSON_BuildTests OFF CACHE INTERNAL "")
 
@@ -29,13 +32,12 @@ set(JSON_BuildTests OFF CACHE INTERNAL "")
 add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/3rdparty/json)
 
 
-add_library(native-lib
+add_library(native-lib SHARED
-             SHARED
 
         # Provides a relative path to your source file(s).
         ${SOURCES}
         ${HEADERS}
-        )
+)
 
 
 # Searches for a specified prebuilt library and stores the path as a
@@ -44,27 +46,26 @@ add_library(native-lib
 # you want to add. CMake verifies that the library exists before
 # completing its build.
 
-find_library( # Sets the name of the path variable.
+find_library(log-lib
-              log-lib
-
         # Specifies the name of the NDK library that
         # you want CMake to locate.
-              log )
+        log
+)
 
-# message(${CMAKE_ANDROID_ARCH_ABI})
 
 set (CURL_LIBRARY
         ${CMAKE_CURRENT_SOURCE_DIR}/3rdparty/android/${ANDROID_ABI}
-        )
+)
 
 set (CURL_INCLUDE_DIR
         ${CMAKE_CURRENT_SOURCE_DIR}/3rdparty/android/include/curl
         ${CMAKE_CURRENT_SOURCE_DIR}/3rdparty/android/include
-        )
+)
 
 add_library(boo STATIC IMPORTED)
-set_target_properties(boo PROPERTIES IMPORTED_LOCATION "${CMAKE_CURRENT_SOURCE_DIR}/3rdparty/android/${ANDROID_ABI}/libcurl.a")
+set_target_properties(boo PROPERTIES IMPORTED_LOCATION
-#find_package(CURL REQUIRED)
+        "${CMAKE_CURRENT_SOURCE_DIR}/3rdparty/android/${ANDROID_ABI}/libcurl.a"
+)
 
 include_directories(${CURL_INCLUDE_DIR})
 
@@ -72,15 +73,10 @@ include_directories(${CURL_INCLUDE_DIR})
 # can link multiple libraries, such as libraries you define in this
 # build script, prebuilt third-party libraries, or system libraries.
 
-#target_include_directories(native-lib PUBLIC ${CURL_INCLUDE_DIR})
+target_link_libraries(native-lib PRIVATE
-target_link_libraries( # Specifies the target library.
-                       native-lib
-        PRIVATE nlohmann_json::nlohmann_json
-        boo
-        #${CURL_LIBRARIES}
 
-                       # Links the target library to the log library
+        nlohmann_json::nlohmann_json
-                       # included in the NDK.
+        boo
         ${log-lib}
         z
-        )
+)

app/src/main/cpp/Demo.cpp

@@ -20,134 +20,40 @@
 
 #include "model/Song.h"
 #include "model/User.h"
+#include "Tok.h"
 
 
-std::string fetchToken();
+std::string fetchToken(const std::string&, const std::string&, const std::string&);
-
-model::Song initSong();
-model::User initUser();
-
-size_t funcTest(void*, size_t, size_t, char*);
-//size_t funcTest(void*, size_t, size_t, std::string&);
-
-int demoCall();
-
-void printSong(const model::Song&);
 
 
-std::string fetchToken()
+std::string fetchToken(const std::string& username, const std::string& password,
+    const std::string& apiUri)
 {
-    auto user = initUser();
+    model::User user(username, password);
-    nlohmann::json usr;
+    manager::Tok tokMgr;
-    usr["username"] = user.username;
-    usr["password"] = user.password;
 
-    CURL *curl;
+    auto token = tokMgr.fetchToken(user, apiUri);
-    CURLcode res;
 
-    curl = curl_easy_init();
+    return token;
 
-    std::string tok;
-    if (curl) {
-        const auto url = "";
-
-        char resp[2048];
-        curl_easy_setopt(curl, CURLOPT_URL, url);
-        const std::string a = usr.dump();
-        //std::string r;
-        curl_easy_setopt(curl, CURLOPT_POSTFIELDS, a.c_str());
-        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, funcTest);
-        curl_easy_setopt(curl, CURLOPT_WRITEDATA, resp);
-        //curl_easy_setopt(curl, CURLOPT_WRITEDATA, r);
-        curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L);
-
-        res = curl_easy_perform(curl);
-        curl_easy_cleanup(curl);
-
-        const std::string i = resp;
-        auto s = nlohmann::json::parse(i);
-        tok = s["token"].get<std::string>();
-        return tok;
-   }
-
-   return "";
-}
-
-
-model::Song initSong()
-{
-    model::Song song;
-    song.title = "hello";
-    song.artist = "some artist";
-
-    return song;
-}
-
-
-model::User initUser()
-{
-    model::User user;
-    user.username = "";
-    user.password = "";
-
-    return user;
-}
-
-
-size_t funcTest(void* ptr, size_t size, size_t nmemb, char *e)
-{
-    std::memcpy(e, ptr, nmemb);
-    e[nmemb] = '\0';
-
-    return nmemb;
-}
-
-size_t funcTest(void* ptr, size_t size, size_t nmemb, std::string& e)
-{
-    e = (char*) ptr;
-
-    return nmemb;
-}
-
-
-int demoCall()
-{
-    model::Song song = initSong();
-
-    std::cout << "testing" << std::endl;
-    printSong(song);
-
-    return 0;
-}
-
-
-void printSong(const model::Song& song)
-{
-    std::cout << "\nsong information" << std::endl;
-    std::cout << "title: " << song.title << std::endl;
-    std::cout << "artist: " << song.artist << std::endl;
-    std::cout << "album: " << song.album << std::endl;
-    std::cout << "genre: " << song.genre << std::endl;
-    std::cout << "year: " << song.year << std::endl;
 }
 
 
 extern "C"
-JNIEXPORT void
+JNIEXPORT jstring
-        JNICALL
-Java_com_example_mear_activities_MainActivity_test(
-        JNIEnv *env,
-        jobject /* this */) {
-
-    demoCall();
-}
-
-extern "C"
-JNIEXPORT void
 JNICALL
-Java_com_example_mear_activities_DemoStreamActivity_test(
+Java_com_example_mear_activities_DemoStreamActivity_logUser(
         JNIEnv *env,
-        jobject /* this */) {
+        jobject thisObj,
+        jstring username,
+        jstring password,
+        jstring apiUri ) {
 
-    auto tok = fetchToken();
+    const std::string usr = env->GetStringUTFChars(username, NULL);
+    const std::string pass = env->GetStringUTFChars(password, NULL);
+    const std::string api = env->GetStringUTFChars(apiUri, NULL);
+
+    auto token = fetchToken(usr, pass, api);
+
+    return env->NewStringUTF(token.c_str());
 }

app/src/main/cpp/SongRepository.cpp

@@ -0,0 +1,16 @@
+//
+// Created by brahmix on 10/3/19.
+//
+
+#include "SongRepository.h"
+
+namespace repository {
+    // TODO: implement this
+    std::vector<model::Song> SongRepository::fetchSongs(const std::string& token,
+        const std::string& uri)
+    {
+        std::vector<model::Song> songs;
+
+      return songs;
+    }
+}

app/src/main/cpp/SongRepository.h

@@ -0,0 +1,23 @@
+//
+// Created by brahmix on 10/3/19.
+//
+
+#ifndef MEAR_SONGREPOSITORY_H
+#define MEAR_SONGREPOSITORY_H
+
+#include <string>
+#include <vector>
+
+#include "model/Song.h"
+
+namespace repository {
+
+    class SongRepository {
+    public:
+        std::vector<model::Song> fetchSongs(const std::string&, const std::string&);
+    private:
+    };
+}
+
+
+#endif //MEAR_SONGREPOSITORY_H

app/src/main/cpp/Tok.cpp

@@ -3,3 +3,69 @@
 //
 
 #include "Tok.h"
+
+#include <cstring>
+
+#include <curl/curl.h>
+#include <nlohmann/json.hpp>
+
+namespace manager {
+    std::string Tok::fetchToken(const model::User &user, const std::string& uri) {
+        CURL *curl;
+        CURLcode res;
+
+        curl = curl_easy_init();
+
+        if (!curl) {
+            return "none";
+        }
+
+        char resp[2048];
+
+        const auto loginUri = fetchLoginUri(uri);
+        const auto obj = userJsonString(user);
+
+        curl_easy_setopt(curl, CURLOPT_URL, loginUri.c_str());
+        curl_easy_setopt(curl, CURLOPT_POSTFIELDS, obj.c_str());
+        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, respBodyRetriever);
+        curl_easy_setopt(curl, CURLOPT_WRITEDATA, resp);
+        curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L);
+
+        res = curl_easy_perform(curl);
+        curl_easy_cleanup(curl);
+
+        if (res == CURLE_OK) {
+            auto s = nlohmann::json::parse(resp);
+            return s["token"].get<std::string>();
+        }
+
+        return "failure";
+    }
+
+
+    std::string Tok::fetchLoginUri(const std::string& baseUri)
+    {
+        std::string uri(baseUri);
+        uri.append("/api/v1/login");
+
+        return uri;
+    }
+
+    std::string Tok::userJsonString(const model::User& user)
+    {
+        nlohmann::json usr;
+        usr["username"] = user.username;
+        usr["password"] = user.password;
+
+        return usr.dump();
+    }
+
+
+    size_t Tok::respBodyRetriever(void* ptr, size_t size, size_t nmemb, char *e)
+    {
+        std::memcpy(e, ptr, nmemb);
+        e[nmemb] = '\0';
+
+        return nmemb;
+    }
+}

app/src/main/cpp/Tok.h

@@ -7,9 +7,20 @@
 
 #include <string>
 
-class Tok {
+#include "model/User.h"
 
-};
+namespace manager {
+
+    class Tok {
+    public:
+        std::string fetchToken(const model::User&, const std::string&);
+    private:
+        std::string fetchLoginUri(const std::string&);
+        std::string userJsonString(const model::User&);
+
+        static size_t respBodyRetriever(void*, size_t, size_t, char*);
+    };
+}
 
 
 #endif //MEAR_TOK_H

app/src/main/cpp/model/User.h

@@ -5,11 +5,14 @@
 #ifndef MEAR_USER_H
 #define MEAR_USER_H
 
-//#include "../../../../../../../../Android/Sdk/ndk/20.0.5594570/toolchains/llvm/prebuilt/linux-x86_64/sysroot/usr/include/c++/v1/string"
 
 namespace model {
 struct User
 {
+    User() = default;
+    User(const std::string& user, const std::string& pass) :
+        username(user), password(pass) { }
+
     std::string username;
     std::string password;
 };

app/src/main/java/com/example/mear/activities/DemoStreamActivity.kt

@@ -7,6 +7,7 @@ import com.example.mear.R
 
 import kotlinx.android.synthetic.main.activity_demo_stream.*
 import kotlinx.android.synthetic.main.content_demo_stream.*
+import org.jetbrains.anko.toast
 
 class DemoStreamActivity : AppCompatActivity() {
 
@@ -17,7 +18,8 @@ class DemoStreamActivity : AppCompatActivity() {
     }
 
 
-    external fun test();
+    private external fun logUser(usr: String, pass: String, api: String): String
+
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -25,7 +27,11 @@ class DemoStreamActivity : AppCompatActivity() {
         setSupportActionBar(toolbar)
 
         demoStream.setOnClickListener {
-            test()
+            toast("vacant").show()
+        }
+
+        login.setOnClickListener {
+            loginButton()
         }
 
         fab.setOnClickListener {view ->
@@ -34,4 +40,32 @@ class DemoStreamActivity : AppCompatActivity() {
         }
     }
 
+    private fun loginButton() {
+        if (!validFields()) {
+            toast("Fields are invalid").show()
+            return
+        }
+
+        var usernameStr = username.text.toString()
+        var passwordStr = password.text.toString()
+        var apiUriStr = apiUri.text.toString()
+
+        var token = logUser(usernameStr, passwordStr, apiUriStr)
+        toast(token).show()
+    }
+
+    private fun validFields(): Boolean {
+        if (username.text.isEmpty()) {
+            return false
+        }
+        if (password.text.isEmpty()) {
+            return false
+        }
+        if (password.text.isEmpty()) {
+            return false
+        }
+
+        return true
+    }
+
 }

app/src/main/res/layout/content_demo_stream.xml

@@ -12,10 +12,60 @@
         android:id="@+id/demoStream"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_marginStart="140dp"
+        android:layout_marginStart="16dp"
         android:text="Stream"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent"
-        app:layout_constraintVertical_bias="0.499" />
+        app:layout_constraintVertical_bias="0.954" />
+
+    <EditText
+        android:id="@+id/username"
+        android:layout_width="245dp"
+        android:layout_height="43dp"
+        android:layout_marginBottom="32dp"
+        android:ems="10"
+        android:hint="username"
+        android:inputType="textPersonName"
+        android:text="kverse"
+        app:layout_constraintBottom_toTopOf="@+id/password"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent" />
+
+    <EditText
+        android:id="@+id/password"
+        android:layout_width="245dp"
+        android:layout_height="43dp"
+        android:layout_marginBottom="32dp"
+        android:ems="10"
+        android:hint="password"
+        android:inputType="textPassword"
+        android:text="demolaugh"
+        app:layout_constraintBottom_toTopOf="@+id/apiUri"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent" />
+
+    <EditText
+        android:id="@+id/apiUri"
+        android:layout_width="245dp"
+        android:layout_height="43dp"
+        android:layout_marginBottom="76dp"
+        android:ems="10"
+        android:hint="apiUri"
+        android:inputType="textPersonName"
+        app:layout_constraintBottom_toTopOf="@+id/login"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent" />
+
+    <Button
+        android:id="@+id/login"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="92dp"
+        android:text="Login"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.498"
+        app:layout_constraintStart_toStartOf="parent" />
+
 </android.support.constraint.ConstraintLayout>