Add

src/main/java/aandrosov/freegamesradar/app/social/media/SocialMediaClient.java

@@ -0,0 +1,10 @@
+package aandrosov.freegamesradar.app.social.media;
+
+import aandrosov.freegamesradar.Game;
+
+public interface SocialMediaClient {
+
+    void uploadGame(Game game) throws GameUploadException;
+
+    SocialMediaType getType();
+}

src/main/java/aandrosov/freegamesradar/app/social/media/SocialMediaType.java

@@ -0,0 +1,5 @@
+package aandrosov.freegamesradar.app.social.media;
+
+public enum SocialMediaType {
+    VK
+}

src/main/java/aandrosov/freegamesradar/app/social/media/VkGroupSocialMediaClient.java

@@ -0,0 +1,67 @@
+package aandrosov.freegamesradar.app.social.media;
+
+import aandrosov.freegamesradar.Game;
+import aandrosov.freegamesradar.app.ApplicationUtils;
+import aandrosov.freegamesradar.epic.games.store.EpicGamesGame;
+import com.vk.api.sdk.client.VkApiClient;
+import com.vk.api.sdk.client.actors.UserActor;
+import com.vk.api.sdk.exceptions.ApiException;
+import com.vk.api.sdk.exceptions.ClientException;
+import com.vk.api.sdk.httpclient.HttpTransportClient;
+import com.vk.api.sdk.objects.photos.responses.GetWallUploadServerResponse;
+import com.vk.api.sdk.objects.photos.responses.SaveWallPhotoResponse;
+import com.vk.api.sdk.objects.photos.responses.WallUploadResponse;
+
+import java.io.File;
+import java.io.IOException;
+
+public class VkGroupSocialMediaClient implements SocialMediaClient {
+
+    private final UserActor actor;
+    private final long groupId;
+
+    private final VkApiClient api;
+
+    public VkGroupSocialMediaClient(UserActor actor, long groupId) {
+        this.actor = actor;
+        this.groupId = groupId;
+        this.api = new VkApiClient(new HttpTransportClient());
+    }
+
+    @Override
+    public void uploadGame(Game game) throws GameUploadException {
+        try {
+            String message = game.title() + "\n" + game.status() + "\n" + game.url();
+
+            if (game instanceof EpicGamesGame) {
+                message = "\uD83D\uDD25Epic Games\n" + ((EpicGamesGame) game).freePeriod() + "\n" + message;
+            }
+
+            File gameCoverFile = ApplicationUtils.saveTempFileFromUrl(game.coverUrl(), null, ".jpg").toFile();
+            SaveWallPhotoResponse photo = uploadWallPhoto(gameCoverFile);
+            String attachment = "photo" + photo.getOwnerId() + "_" + photo.getId();
+            api.wall().post(actor).fromGroup(true).ownerId(-groupId).message(message).attachments(attachment).execute();
+        } catch (ClientException | IOException | ApiException exception) {
+            throw new GameUploadException("Cannot to upload a game \"" + game.title() + "\": " + exception.getMessage());
+        }
+    }
+
+    public SaveWallPhotoResponse uploadWallPhoto(File photo) throws ClientException, ApiException {
+        GetWallUploadServerResponse uploadServer = api.photos().getWallUploadServer(actor).groupId(groupId).execute();
+
+        String uploadUrl = uploadServer.getUploadUrl().toASCIIString();
+        WallUploadResponse wallUpload = api.upload().photoWall(uploadUrl, photo).execute();
+
+        return api.photos().saveWallPhoto(actor, wallUpload.getPhoto())
+                .server(wallUpload.getServer())
+                .hash(wallUpload.getHash())
+                .groupId(groupId)
+                .execute()
+                .get(0);
+    }
+
+    @Override
+    public SocialMediaType getType() {
+        return SocialMediaType.VK;
+    }
+}

src/main/java/aandrosov/freegamesradar/vk/VkImplicitFlowAuthorizationData.java

@@ -0,0 +1,46 @@
+package aandrosov.freegamesradar.vk;
+
+import com.vk.api.sdk.client.actors.Actor;
+
+import java.io.*;
+
+public class VkImplicitFlowAuthorizationData implements Actor<Long>, Serializable {
+
+    private final String accessToken;
+
+    private final Long expiresIn;
+    private final Long userId;
+
+    public VkImplicitFlowAuthorizationData(String accessToken, Long expiresIn, Long userId) {
+        this.accessToken = accessToken;
+        this.expiresIn = expiresIn;
+        this.userId = userId;
+    }
+
+    protected VkImplicitFlowAuthorizationData() {
+        this(null, null, null);
+    }
+
+    @Override
+    public String getAccessToken() {
+        return accessToken;
+    }
+
+    @Override
+    public Long getId() {
+        return userId;
+    }
+
+    public Long getExpiresIn() {
+        return expiresIn;
+    }
+
+    @Override
+    public String toString() {
+        return "VkImplicitFlowUserActor{" +
+                "accessToken='" + accessToken + '\'' +
+                ", expiresIn=" + expiresIn +
+                ", userId=" + userId +
+                '}';
+    }
+}

src/main/resources/help.txt

@@ -0,0 +1,12 @@
+To run application you must set:
+    1. social media (only vk)
+    2. other parameters for your social media
+
+Commands:
+    --help -> this message
+    --social_media -> social media to post (only vk)
+    --app_id -> your app id. Required for VK
+    --group_id -> your group id. Required for VK
+
+Example:
+    ./FreeGamesRadar --social_media vk --app_id 213123 --group_id 12352315312