Add Issue Subscribtion (#203)

rename Context

move things to IssueActions

rm unused API func

get Context only one time

add repoWatch into tinyDB

add maginal Issue Un-/Subscription support

add Issue Subscribtion

 * api
 * layout

Co-authored-by: 6543 <6543@obermui.de>
Reviewed-on: https://gitea.com/gitnex/GitNex/pulls/203
Reviewed-by: M M Arif <mmarif@swatian.com>

app/src/main/java/org/mian/gitnex/actions/IssueActions.java

@@ -2,6 +2,8 @@ package org.mian.gitnex.actions;
 
 import android.content.Context;
 import android.util.Log;
+import android.view.View;
+import android.widget.TextView;
 import com.google.gson.JsonElement;
 import org.mian.gitnex.R;
 import org.mian.gitnex.activities.ReplyToIssueActivity;
@@ -22,9 +24,9 @@ import retrofit2.Callback;
 
 public class IssueActions {
 
-    public static void editIssueComment(final Context context, final int commentId, final String commentBody) {
+    public static void editIssueComment(final Context ctx, final int commentId, final String commentBody) {
 
-        final TinyDB tinyDb = new TinyDB(context);
+        final TinyDB tinyDb = new TinyDB(ctx);
         final String instanceUrl = tinyDb.getString("instanceUrl");
         final String loginUid = tinyDb.getString("loginUid");
         final String instanceToken = "token " + tinyDb.getString(loginUid + "-token");
@@ -37,9 +39,9 @@ public class IssueActions {
         Call<IssueComments> call;
 
         call = RetrofitClient
-                .getInstance(instanceUrl, context)
+                .getInstance(instanceUrl, ctx)
                 .getApiInterface()
-                .patchIssueComment(Authorization.returnAuthentication(context, loginUid, instanceToken), repoOwner, repoName, commentId, commentBodyJson);
+                .patchIssueComment(Authorization.returnAuthentication(ctx, loginUid, instanceToken), repoOwner, repoName, commentId, commentBodyJson);
 
         call.enqueue(new Callback<IssueComments>() {
 
@@ -50,32 +52,32 @@ public class IssueActions {
                     if(response.code() == 200) {
 
                         tinyDb.putBoolean("commentEdited", true);
-                        Toasty.info(context, context.getString(R.string.editCommentUpdatedText));
+                        Toasty.info(ctx, ctx.getString(R.string.editCommentUpdatedText));
-                        ((ReplyToIssueActivity)context).finish();
+                        ((ReplyToIssueActivity)ctx).finish();
 
                     }
                 }
                 else if(response.code() == 401) {
 
-                    AlertDialogs.authorizationTokenRevokedDialog(context, context.getResources().getString(R.string.alertDialogTokenRevokedTitle),
+                    AlertDialogs.authorizationTokenRevokedDialog(ctx, ctx.getResources().getString(R.string.alertDialogTokenRevokedTitle),
-                            context.getResources().getString(R.string.alertDialogTokenRevokedMessage),
+                            ctx.getResources().getString(R.string.alertDialogTokenRevokedMessage),
-                            context.getResources().getString(R.string.alertDialogTokenRevokedCopyNegativeButton),
+                            ctx.getResources().getString(R.string.alertDialogTokenRevokedCopyNegativeButton),
-                            context.getResources().getString(R.string.alertDialogTokenRevokedCopyPositiveButton));
+                            ctx.getResources().getString(R.string.alertDialogTokenRevokedCopyPositiveButton));
 
                 }
                 else if(response.code() == 403) {
 
-                    Toasty.info(context, context.getString(R.string.authorizeError));
+                    Toasty.info(ctx, ctx.getString(R.string.authorizeError));
 
                 }
                 else if(response.code() == 404) {
 
-                    Toasty.info(context, context.getString(R.string.apiNotFound));
+                    Toasty.info(ctx, ctx.getString(R.string.apiNotFound));
 
                 }
                 else {
 
-                    Toasty.info(context, context.getString(R.string.genericError));
+                    Toasty.info(ctx, ctx.getString(R.string.genericError));
 
                 }
 
@@ -89,9 +91,9 @@ public class IssueActions {
 
     }
 
-    public static void closeReopenIssue(final Context context, final int issueIndex, final String issueState) {
+    public static void closeReopenIssue(final Context ctx, final int issueIndex, final String issueState) {
 
-        final TinyDB tinyDb = new TinyDB(context);
+        final TinyDB tinyDb = new TinyDB(ctx);
         final String instanceUrl = tinyDb.getString("instanceUrl");
         final String loginUid = tinyDb.getString("loginUid");
         final String instanceToken = "token " + tinyDb.getString(loginUid + "-token");
@@ -104,9 +106,9 @@ public class IssueActions {
         Call<JsonElement> call;
 
         call = RetrofitClient
-                .getInstance(instanceUrl, context)
+                .getInstance(instanceUrl, ctx)
                 .getApiInterface()
-                .closeReopenIssue(Authorization.returnAuthentication(context, loginUid, instanceToken), repoOwner, repoName, issueIndex, issueStatJson);
+                .closeReopenIssue(Authorization.returnAuthentication(ctx, loginUid, instanceToken), repoOwner, repoName, issueIndex, issueStatJson);
 
         call.enqueue(new Callback<JsonElement>() {
 
@@ -119,35 +121,35 @@ public class IssueActions {
                         tinyDb.putBoolean("resumeIssues", true);
                         tinyDb.putBoolean("resumeClosedIssues", true);
                         if(issueState.equals("closed")) {
-                            Toasty.info(context, context.getString(R.string.issueStateClosed));
+                            Toasty.info(ctx, ctx.getString(R.string.issueStateClosed));
                         }
                         else if(issueState.equals("open")) {
-                            Toasty.info(context, context.getString(R.string.issueStateReopened));
+                            Toasty.info(ctx, ctx.getString(R.string.issueStateReopened));
                         }
 
                     }
                 }
                 else if(response.code() == 401) {
 
-                    AlertDialogs.authorizationTokenRevokedDialog(context, context.getResources().getString(R.string.alertDialogTokenRevokedTitle),
+                    AlertDialogs.authorizationTokenRevokedDialog(ctx, ctx.getResources().getString(R.string.alertDialogTokenRevokedTitle),
-                            context.getResources().getString(R.string.alertDialogTokenRevokedMessage),
+                            ctx.getResources().getString(R.string.alertDialogTokenRevokedMessage),
-                            context.getResources().getString(R.string.alertDialogTokenRevokedCopyNegativeButton),
+                            ctx.getResources().getString(R.string.alertDialogTokenRevokedCopyNegativeButton),
-                            context.getResources().getString(R.string.alertDialogTokenRevokedCopyPositiveButton));
+                            ctx.getResources().getString(R.string.alertDialogTokenRevokedCopyPositiveButton));
 
                 }
                 else if(response.code() == 403) {
 
-                    Toasty.info(context, context.getString(R.string.authorizeError));
+                    Toasty.info(ctx, ctx.getString(R.string.authorizeError));
 
                 }
                 else if(response.code() == 404) {
 
-                    Toasty.info(context, context.getString(R.string.apiNotFound));
+                    Toasty.info(ctx, ctx.getString(R.string.apiNotFound));
 
                 }
                 else {
 
-                    Toasty.info(context, context.getString(R.string.genericError));
+                    Toasty.info(ctx, ctx.getString(R.string.genericError));
 
                 }
 
@@ -161,4 +163,117 @@ public class IssueActions {
 
     }
 
+    public static void subscribe(final Context ctx, final TextView subscribeIssue, final TextView unsubscribeIssue) {
+
+        final TinyDB tinyDB = new TinyDB(ctx);
+
+        final String instanceUrl = tinyDB.getString("instanceUrl");
+        String repoFullName = tinyDB.getString("repoFullName");
+        String[] parts = repoFullName.split("/");
+        final String repoOwner = parts[0];
+        final String repoName = parts[1];
+        final String loginUid = tinyDB.getString("loginUid");
+        final String userLogin = tinyDB.getString("userLogin");
+        final String token = "token " + tinyDB.getString(loginUid + "-token");
+        final int issueNr = Integer.parseInt(tinyDB.getString("issueNumber"));
+
+        Call<Void> call;
+
+        call = RetrofitClient
+                .getInstance(instanceUrl, ctx)
+                .getApiInterface()
+                .addIssueSubscriber(token, repoOwner, repoName, issueNr, userLogin);
+
+        call.enqueue(new Callback<Void>() {
+
+            @Override
+            public void onResponse(@NonNull Call<Void> call, @NonNull retrofit2.Response<Void> response) {
+
+                if(response.isSuccessful()) {
+
+                    Toasty.info(ctx, ctx.getString(R.string.issueSubscribtion));
+                    subscribeIssue.setVisibility(View.GONE);
+                    unsubscribeIssue.setVisibility(View.VISIBLE);
+
+                }
+                else if(response.code() == 401) {
+
+                    AlertDialogs.authorizationTokenRevokedDialog(ctx, ctx.getResources().getString(R.string.alertDialogTokenRevokedTitle),
+                            ctx.getResources().getString(R.string.alertDialogTokenRevokedMessage),
+                            ctx.getResources().getString(R.string.alertDialogTokenRevokedCopyNegativeButton),
+                            ctx.getResources().getString(R.string.alertDialogTokenRevokedCopyPositiveButton));
+
+                }
+                else {
+
+                    Toasty.info(ctx, ctx.getString(R.string.issueSubscribtionError));
+
+                }
+
+            }
+
+            @Override
+            public void onFailure(@NonNull Call<Void> call, @NonNull Throwable t) {
+                Toasty.info(ctx, ctx.getString(R.string.issueSubscribtionError));
+            }
+        });
+
+    }
+
+    public static void unsubscribe(final Context ctx, final TextView subscribeIssue, final TextView unsubscribeIssue) {
+
+        final TinyDB tinyDB = new TinyDB(ctx);
+
+        final String instanceUrl = tinyDB.getString("instanceUrl");
+        String repoFullName = tinyDB.getString("repoFullName");
+        String[] parts = repoFullName.split("/");
+        final String repoOwner = parts[0];
+        final String repoName = parts[1];
+        final String loginUid = tinyDB.getString("loginUid");
+        final String userLogin = tinyDB.getString("userLogin");
+        final String token = "token " + tinyDB.getString(loginUid + "-token");
+        final int issueNr = Integer.parseInt(tinyDB.getString("issueNumber"));
+
+        Call<Void> call;
+
+        call = RetrofitClient
+                .getInstance(instanceUrl, ctx)
+                .getApiInterface()
+                .delIssueSubscriber(token, repoOwner, repoName, issueNr, userLogin);
+
+        call.enqueue(new Callback<Void>() {
+
+            @Override
+            public void onResponse(@NonNull Call<Void> call, @NonNull retrofit2.Response<Void> response) {
+
+                if(response.isSuccessful()) {
+
+                    Toasty.info(ctx, ctx.getString(R.string.issueUnsubscribtion));
+                    unsubscribeIssue.setVisibility(View.GONE);
+                    subscribeIssue.setVisibility(View.VISIBLE);
+
+                }
+                else if(response.code() == 401) {
+
+                    AlertDialogs.authorizationTokenRevokedDialog(ctx, ctx.getResources().getString(R.string.alertDialogTokenRevokedTitle),
+                            ctx.getResources().getString(R.string.alertDialogTokenRevokedMessage),
+                            ctx.getResources().getString(R.string.alertDialogTokenRevokedCopyNegativeButton),
+                            ctx.getResources().getString(R.string.alertDialogTokenRevokedCopyPositiveButton));
+
+                }
+                else {
+
+                    Toasty.info(ctx, ctx.getString(R.string.issueUnsubscribtionError));
+
+                }
+
+            }
+
+            @Override
+            public void onFailure(@NonNull Call<Void> call, @NonNull Throwable t) {
+                Toasty.info(ctx, ctx.getString(R.string.issueUnsubscribtionError));
+            }
+        });
+    }
+
 }

app/src/main/java/org/mian/gitnex/adapters/ExploreRepositoriesAdapter.java

@@ -20,10 +20,16 @@ import org.mian.gitnex.activities.RepoDetailActivity;
 import org.mian.gitnex.activities.RepoStargazersActivity;
 import org.mian.gitnex.activities.RepoWatchersActivity;
 import org.mian.gitnex.clients.PicassoService;
+import org.mian.gitnex.clients.RetrofitClient;
+import org.mian.gitnex.helpers.AlertDialogs;
 import org.mian.gitnex.helpers.RoundedTransformation;
+import org.mian.gitnex.helpers.Toasty;
 import org.mian.gitnex.models.UserRepositories;
+import org.mian.gitnex.models.WatchRepository;
 import org.mian.gitnex.util.TinyDB;
 import java.util.List;
+import retrofit2.Call;
+import retrofit2.Callback;
 
 /**
  * Author M M Arif
@@ -75,6 +81,50 @@ public class ExploreRepositoriesAdapter extends RecyclerView.Adapter<ExploreRepo
                 TinyDB tinyDb = new TinyDB(context);
                 tinyDb.putString("repoFullName", repoFullName.getText().toString());
                 tinyDb.putBoolean("resumeIssues", true);
+
+                //store if user is watching this repo
+                {
+                    final String instanceUrl = tinyDb.getString("instanceUrl");
+                    String[] parts = repoFullName.getText().toString().split("/");
+                    final String repoOwner = parts[0];
+                    final String repoName = parts[1];
+                    final String token = "token " + tinyDb.getString(tinyDb.getString("loginUid") + "-token");
+
+                    WatchRepository watch = new WatchRepository();
+
+                    Call<WatchRepository> call;
+
+                    call = RetrofitClient.getInstance(instanceUrl, context).getApiInterface().checkRepoWatchStatus(token, repoOwner, repoName);
+
+                    call.enqueue(new Callback<WatchRepository>() {
+
+                        @Override
+                        public void onResponse(@NonNull Call<WatchRepository> call, @NonNull retrofit2.Response<WatchRepository> response) {
+
+                            if(response.isSuccessful()) {
+
+                                tinyDb.putBoolean("repoWatch", response.body().getSubscribed());
+
+                            }
+                            else {
+
+                                tinyDb.putBoolean("repoWatch", false);
+                                Toasty.info(context, context.getString(R.string.genericApiStatusError));
+
+                            }
+
+                        }
+
+                        @Override
+                        public void onFailure(@NonNull Call<WatchRepository> call, @NonNull Throwable t) {
+
+                            tinyDb.putBoolean("repoWatch", false);
+                            Toasty.info(context, context.getString(R.string.genericApiStatusError));
+
+                        }
+                    });
+                }
+
                 context.startActivity(intent);
 
             });

app/src/main/java/org/mian/gitnex/adapters/MyReposListAdapter.java

@@ -20,13 +20,18 @@ import org.mian.gitnex.activities.RepoDetailActivity;
 import org.mian.gitnex.activities.RepoStargazersActivity;
 import org.mian.gitnex.activities.RepoWatchersActivity;
 import org.mian.gitnex.clients.PicassoService;
+import org.mian.gitnex.clients.RetrofitClient;
 import org.mian.gitnex.helpers.RoundedTransformation;
+import org.mian.gitnex.helpers.Toasty;
 import org.mian.gitnex.models.UserRepositories;
+import org.mian.gitnex.models.WatchRepository;
 import org.mian.gitnex.util.TinyDB;
 import java.util.ArrayList;
 import java.util.List;
 import androidx.annotation.NonNull;
 import androidx.recyclerview.widget.RecyclerView;
+import retrofit2.Call;
+import retrofit2.Callback;
 
 /**
  * Author M M Arif
@@ -74,6 +79,50 @@ public class MyReposListAdapter extends RecyclerView.Adapter<MyReposListAdapter.
                 tinyDb.putString("repoFullName", fullNameMy.getText().toString());
                 tinyDb.putString("repoType", repoType.getText().toString());
                 tinyDb.putBoolean("resumeIssues", true);
+
+                //store if user is watching this repo
+                {
+                    final String instanceUrl = tinyDb.getString("instanceUrl");
+                    String[] parts = fullNameMy.getText().toString().split("/");
+                    final String repoOwner = parts[0];
+                    final String repoName = parts[1];
+                    final String token = "token " + tinyDb.getString(tinyDb.getString("loginUid") + "-token");
+
+                    WatchRepository watch = new WatchRepository();
+
+                    Call<WatchRepository> call;
+
+                    call = RetrofitClient.getInstance(instanceUrl, context).getApiInterface().checkRepoWatchStatus(token, repoOwner, repoName);
+
+                    call.enqueue(new Callback<WatchRepository>() {
+
+                        @Override
+                        public void onResponse(@NonNull Call<WatchRepository> call, @NonNull retrofit2.Response<WatchRepository> response) {
+
+                            if(response.isSuccessful()) {
+
+                                tinyDb.putBoolean("repoWatch", response.body().getSubscribed());
+
+                            }
+                            else {
+
+                                tinyDb.putBoolean("repoWatch", false);
+                                Toasty.info(context, context.getString(R.string.genericApiStatusError));
+
+                            }
+
+                        }
+
+                        @Override
+                        public void onFailure(@NonNull Call<WatchRepository> call, @NonNull Throwable t) {
+
+                            tinyDb.putBoolean("repoWatch", false);
+                            Toasty.info(context, context.getString(R.string.genericApiStatusError));
+
+                        }
+                    });
+                }
+
                 context.startActivity(intent);
 
             });

app/src/main/java/org/mian/gitnex/adapters/ReposListAdapter.java

@@ -22,11 +22,16 @@ import org.mian.gitnex.activities.RepoDetailActivity;
 import org.mian.gitnex.activities.RepoStargazersActivity;
 import org.mian.gitnex.activities.RepoWatchersActivity;
 import org.mian.gitnex.clients.PicassoService;
+import org.mian.gitnex.clients.RetrofitClient;
 import org.mian.gitnex.helpers.RoundedTransformation;
+import org.mian.gitnex.helpers.Toasty;
 import org.mian.gitnex.models.UserRepositories;
+import org.mian.gitnex.models.WatchRepository;
 import org.mian.gitnex.util.TinyDB;
 import java.util.ArrayList;
 import java.util.List;
+import retrofit2.Call;
+import retrofit2.Callback;
 
 /**
  * Author M M Arif
@@ -77,6 +82,50 @@ public class ReposListAdapter extends RecyclerView.Adapter<ReposListAdapter.Repo
                 tinyDb.putString("repoFullName", repoFullName.getText().toString());
                 tinyDb.putString("repoType", repoType_.getText().toString());
                 tinyDb.putBoolean("resumeIssues", true);
+
+                //store if user is watching this repo
+                {
+                    final String instanceUrl = tinyDb.getString("instanceUrl");
+                    String[] parts = repoFullName.getText().toString().split("/");
+                    final String repoOwner = parts[0];
+                    final String repoName = parts[1];
+                    final String token = "token " + tinyDb.getString(tinyDb.getString("loginUid") + "-token");
+
+                    WatchRepository watch = new WatchRepository();
+
+                    Call<WatchRepository> call;
+
+                    call = RetrofitClient.getInstance(instanceUrl, context).getApiInterface().checkRepoWatchStatus(token, repoOwner, repoName);
+
+                    call.enqueue(new Callback<WatchRepository>() {
+
+                        @Override
+                        public void onResponse(@NonNull Call<WatchRepository> call, @NonNull retrofit2.Response<WatchRepository> response) {
+
+                            if(response.isSuccessful()) {
+
+                                tinyDb.putBoolean("repoWatch", response.body().getSubscribed());
+
+                            }
+                            else {
+
+                                tinyDb.putBoolean("repoWatch", false);
+                                Toasty.info(context, context.getString(R.string.genericApiStatusError));
+
+                            }
+
+                        }
+
+                        @Override
+                        public void onFailure(@NonNull Call<WatchRepository> call, @NonNull Throwable t) {
+
+                            tinyDb.putBoolean("repoWatch", false);
+                            Toasty.info(context, context.getString(R.string.genericApiStatusError));
+
+                        }
+                    });
+                }
+
                 context.startActivity(intent);
 
             });

app/src/main/java/org/mian/gitnex/adapters/RepositoriesByOrgAdapter.java

@@ -20,13 +20,18 @@ import org.mian.gitnex.activities.RepoDetailActivity;
 import org.mian.gitnex.activities.RepoStargazersActivity;
 import org.mian.gitnex.activities.RepoWatchersActivity;
 import org.mian.gitnex.clients.PicassoService;
+import org.mian.gitnex.clients.RetrofitClient;
 import org.mian.gitnex.helpers.RoundedTransformation;
+import org.mian.gitnex.helpers.Toasty;
 import org.mian.gitnex.models.UserRepositories;
+import org.mian.gitnex.models.WatchRepository;
 import org.mian.gitnex.util.TinyDB;
 import java.util.ArrayList;
 import java.util.List;
 import androidx.annotation.NonNull;
 import androidx.recyclerview.widget.RecyclerView;
+import retrofit2.Call;
+import retrofit2.Callback;
 
 /**
  * Author M M Arif
@@ -74,8 +79,51 @@ public class RepositoriesByOrgAdapter extends RecyclerView.Adapter<RepositoriesB
                 tinyDb.putString("repoFullName", fullName.getText().toString());
                 tinyDb.putString("repoType", repoType.getText().toString());
                 tinyDb.putBoolean("resumeIssues", true);
-                context.startActivity(intent);
 
+                //store if user is watching this repo
+                {
+                    final String instanceUrl = tinyDb.getString("instanceUrl");
+                    String[] parts = fullName.getText().toString().split("/");
+                    final String repoOwner = parts[0];
+                    final String repoName = parts[1];
+                    final String token = "token " + tinyDb.getString(tinyDb.getString("loginUid") + "-token");
+
+                    WatchRepository watch = new WatchRepository();
+
+                    Call<WatchRepository> call;
+
+                    call = RetrofitClient.getInstance(instanceUrl, context).getApiInterface().checkRepoWatchStatus(token, repoOwner, repoName);
+
+                    call.enqueue(new Callback<WatchRepository>() {
+
+                        @Override
+                        public void onResponse(@NonNull Call<WatchRepository> call, @NonNull retrofit2.Response<WatchRepository> response) {
+
+                            if(response.isSuccessful()) {
+
+                                tinyDb.putBoolean("repoWatch", response.body().getSubscribed());
+
+                            }
+                            else {
+
+                                tinyDb.putBoolean("repoWatch", false);
+                                Toasty.info(context, context.getString(R.string.genericApiStatusError));
+
+                            }
+
+                        }
+
+                        @Override
+                        public void onFailure(@NonNull Call<WatchRepository> call, @NonNull Throwable t) {
+
+                            tinyDb.putBoolean("repoWatch", false);
+                            Toasty.info(context, context.getString(R.string.genericApiStatusError));
+
+                        }
+                    });
+                }
+
+                context.startActivity(intent);
             });
 
             reposDropdownMenu.setOnClickListener(v -> {

app/src/main/java/org/mian/gitnex/adapters/StarredReposListAdapter.java

@@ -20,13 +20,18 @@ import org.mian.gitnex.activities.RepoDetailActivity;
 import org.mian.gitnex.activities.RepoStargazersActivity;
 import org.mian.gitnex.activities.RepoWatchersActivity;
 import org.mian.gitnex.clients.PicassoService;
+import org.mian.gitnex.clients.RetrofitClient;
 import org.mian.gitnex.helpers.RoundedTransformation;
+import org.mian.gitnex.helpers.Toasty;
 import org.mian.gitnex.models.UserRepositories;
+import org.mian.gitnex.models.WatchRepository;
 import org.mian.gitnex.util.TinyDB;
 import java.util.ArrayList;
 import java.util.List;
 import androidx.annotation.NonNull;
 import androidx.recyclerview.widget.RecyclerView;
+import retrofit2.Call;
+import retrofit2.Callback;
 
 /**
  * Author M M Arif
@@ -74,6 +79,50 @@ public class StarredReposListAdapter extends RecyclerView.Adapter<StarredReposLi
                 tinyDb.putString("repoFullName", fullName.getText().toString());
                 tinyDb.putString("repoType", repoType.getText().toString());
                 tinyDb.putBoolean("resumeIssues", true);
+
+                //store if user is watching this repo
+                {
+                    final String instanceUrl = tinyDb.getString("instanceUrl");
+                    String[] parts = fullName.getText().toString().split("/");
+                    final String repoOwner = parts[0];
+                    final String repoName = parts[1];
+                    final String token = "token " + tinyDb.getString(tinyDb.getString("loginUid") + "-token");
+
+                    WatchRepository watch = new WatchRepository();
+
+                    Call<WatchRepository> call;
+
+                    call = RetrofitClient.getInstance(instanceUrl, context).getApiInterface().checkRepoWatchStatus(token, repoOwner, repoName);
+
+                    call.enqueue(new Callback<WatchRepository>() {
+
+                        @Override
+                        public void onResponse(@NonNull Call<WatchRepository> call, @NonNull retrofit2.Response<WatchRepository> response) {
+
+                            if(response.isSuccessful()) {
+
+                                tinyDb.putBoolean("repoWatch", response.body().getSubscribed());
+
+                            }
+                            else {
+
+                                tinyDb.putBoolean("repoWatch", false);
+                                Toasty.info(context, context.getString(R.string.genericApiStatusError));
+
+                            }
+
+                        }
+
+                        @Override
+                        public void onFailure(@NonNull Call<WatchRepository> call, @NonNull Throwable t) {
+
+                            tinyDb.putBoolean("repoWatch", false);
+                            Toasty.info(context, context.getString(R.string.genericApiStatusError));
+
+                        }
+                    });
+                }
+
                 context.startActivity(intent);
 
             });

app/src/main/java/org/mian/gitnex/fragments/BottomSheetSingleIssueFragment.java

@@ -1,5 +1,6 @@
 package org.mian.gitnex.fragments;
 
+import android.content.Context;
 import android.content.Intent;
 import android.os.Bundle;
 import android.view.LayoutInflater;
@@ -15,6 +16,8 @@ import org.mian.gitnex.activities.EditIssueActivity;
 import org.mian.gitnex.activities.FileDiffActivity;
 import org.mian.gitnex.activities.MergePullRequestActivity;
 import org.mian.gitnex.activities.ReplyToIssueActivity;
+import org.mian.gitnex.clients.RetrofitClient;
+import org.mian.gitnex.helpers.AlertDialogs;
 import org.mian.gitnex.helpers.Toasty;
 import org.mian.gitnex.util.TinyDB;
 import androidx.annotation.NonNull;
@@ -22,6 +25,8 @@ import androidx.annotation.Nullable;
 import android.content.ClipboardManager;
 import android.content.ClipData;
 import java.util.Objects;
+import retrofit2.Call;
+import retrofit2.Callback;
 
 /**
  * Author M M Arif
@@ -35,7 +40,8 @@ public class BottomSheetSingleIssueFragment extends BottomSheetDialogFragment {
 
         View v = inflater.inflate(R.layout.bottom_sheet_single_issue_layout, container, false);
 
-        final TinyDB tinyDB = new TinyDB(getContext());
+        final Context ctx = getContext();
+        final TinyDB tinyDB = new TinyDB(ctx);
 
         TextView replyToIssue = v.findViewById(R.id.replyToIssue);
         TextView editIssue = v.findViewById(R.id.editIssue);
@@ -47,12 +53,14 @@ public class BottomSheetSingleIssueFragment extends BottomSheetDialogFragment {
         TextView openFilesDiff = v.findViewById(R.id.openFilesDiff);
         TextView mergePullRequest = v.findViewById(R.id.mergePullRequest);
         TextView shareIssue = v.findViewById(R.id.shareIssue);
+        TextView subscribeIssue = v.findViewById(R.id.subscribeIssue);
+        TextView unsubscribeIssue = v.findViewById(R.id.unsubscribeIssue);
 
         replyToIssue.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
 
-                startActivity(new Intent(getContext(), ReplyToIssueActivity.class));
+                startActivity(new Intent(ctx, ReplyToIssueActivity.class));
                 dismiss();
 
             }
@@ -89,7 +97,7 @@ public class BottomSheetSingleIssueFragment extends BottomSheetDialogFragment {
             @Override
             public void onClick(View v) {
 
-                startActivity(new Intent(getContext(), MergePullRequestActivity.class));
+                startActivity(new Intent(ctx, MergePullRequestActivity.class));
                 dismiss();
 
             }
@@ -99,7 +107,7 @@ public class BottomSheetSingleIssueFragment extends BottomSheetDialogFragment {
             @Override
             public void onClick(View v) {
 
-                startActivity(new Intent(getContext(), FileDiffActivity.class));
+                startActivity(new Intent(ctx, FileDiffActivity.class));
                 dismiss();
 
             }
@@ -109,7 +117,7 @@ public class BottomSheetSingleIssueFragment extends BottomSheetDialogFragment {
             @Override
             public void onClick(View v) {
 
-                startActivity(new Intent(getContext(), EditIssueActivity.class));
+                startActivity(new Intent(ctx, EditIssueActivity.class));
                 dismiss();
 
             }
@@ -119,7 +127,7 @@ public class BottomSheetSingleIssueFragment extends BottomSheetDialogFragment {
             @Override
             public void onClick(View v) {
 
-                startActivity(new Intent(getContext(), AddRemoveLabelsActivity.class));
+                startActivity(new Intent(ctx, AddRemoveLabelsActivity.class));
                 dismiss();
 
             }
@@ -129,7 +137,7 @@ public class BottomSheetSingleIssueFragment extends BottomSheetDialogFragment {
             @Override
             public void onClick(View v) {
 
-                startActivity(new Intent(getContext(), AddRemoveAssigneesActivity.class));
+                startActivity(new Intent(ctx, AddRemoveAssigneesActivity.class));
                 dismiss();
 
             }
@@ -173,14 +181,14 @@ public class BottomSheetSingleIssueFragment extends BottomSheetDialogFragment {
                 String issueUrl = instanceUrlWithProtocol + "/" + repoFullName + "/issues/" + tinyDB.getString("issueNumber");
 
                 // copy to clipboard
-                ClipboardManager clipboard = (ClipboardManager) Objects.requireNonNull(getContext()).getSystemService(android.content.Context.CLIPBOARD_SERVICE);
+                ClipboardManager clipboard = (ClipboardManager) Objects.requireNonNull(ctx).getSystemService(android.content.Context.CLIPBOARD_SERVICE);
                 ClipData clip = ClipData.newPlainText("issueUrl", issueUrl);
                 assert clipboard != null;
                 clipboard.setPrimaryClip(clip);
 
                 dismiss();
 
-                Toasty.info(getContext(), getContext().getString(R.string.copyIssueUrlToastMsg));
+                Toasty.info(ctx, ctx.getString(R.string.copyIssueUrlToastMsg));
 
             }
         });
@@ -195,7 +203,7 @@ public class BottomSheetSingleIssueFragment extends BottomSheetDialogFragment {
                     @Override
                     public void onClick(View v) {
 
-                        IssueActions.closeReopenIssue(getContext(), Integer.parseInt(tinyDB.getString("issueNumber")), "closed");
+                        IssueActions.closeReopenIssue(ctx, Integer.parseInt(tinyDB.getString("issueNumber")), "closed");
                         dismiss();
 
                     }
@@ -210,7 +218,7 @@ public class BottomSheetSingleIssueFragment extends BottomSheetDialogFragment {
                     @Override
                     public void onClick(View v) {
 
-                        IssueActions.closeReopenIssue(getContext(), Integer.parseInt(tinyDB.getString("issueNumber")), "open");
+                        IssueActions.closeReopenIssue(ctx, Integer.parseInt(tinyDB.getString("issueNumber")), "open");
                         dismiss();
 
                     }
@@ -226,6 +234,31 @@ public class BottomSheetSingleIssueFragment extends BottomSheetDialogFragment {
 
         }
 
+        subscribeIssue.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+
+                IssueActions.subscribe(ctx, subscribeIssue, unsubscribeIssue);
+
+            }
+        });
+
+        unsubscribeIssue.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+
+                IssueActions.unsubscribe(ctx, subscribeIssue, unsubscribeIssue);
+
+            }
+        });
+
+        //if RepoWatch True Provide Unsubscribe first
+        // ToDo: API to check if user is subscribed to an issue (do not exist can be guessed by many api endpoints :/)
+        if (tinyDB.getBoolean("repoWatch")) {
+            subscribeIssue.setVisibility(View.GONE);
+            unsubscribeIssue.setVisibility(View.VISIBLE);
+        }
+
         return v;
     }
 

app/src/main/java/org/mian/gitnex/interfaces/ApiInterface.java

@@ -252,6 +252,12 @@ public interface ApiInterface {
     @DELETE("repos/{owner}/{repo}/subscription") // un watch a repository
     Call<JsonElement> unWatchRepository(@Header("Authorization") String token, @Path("owner") String ownerName, @Path("repo") String repoName);
 
+    @PUT("repos/{owner}/{repo}/issues/{index}/subscriptions/{user}") // subscribe user to issue
+    Call<Void> addIssueSubscriber(@Header("Authorization") String token, @Path("owner") String ownerName, @Path("repo") String repoName, @Path("index") int issueIndex, @Path("user") String issueSubscriber);
+
+    @DELETE("repos/{owner}/{repo}/issues/{index}/subscriptions/{user}") // unsubscribe user to issue
+    Call<Void> delIssueSubscriber(@Header("Authorization") String token, @Path("owner") String ownerName, @Path("repo") String repoName, @Path("index") int issueIndex, @Path("user") String issueSubscriber);
+
     @GET("repos/{owner}/{repo}/pulls") // get repository pull requests
     Call<List<PullRequests>> getPullRequests(@Header("Authorization") String token, @Path("owner") String owner, @Path("repo") String repo, @Query("page") int page, @Query("state") String state, @Query("limit") int limit);
 

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

@@ -90,6 +90,31 @@
                 android:textSize="16sp"
                 android:padding="16dp" />
 
+            <TextView
+                android:id="@+id/subscribeIssue"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_gravity="center_vertical"
+                android:text="@string/singleIssueSubscribe"
+                android:drawableStart="@drawable/ic_watchers"
+                android:drawablePadding="24dp"
+                android:textColor="@color/white"
+                android:textSize="16sp"
+                android:padding="16dp" />
+
+            <TextView
+                android:id="@+id/unsubscribeIssue"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_gravity="center_vertical"
+                android:drawableStart="@drawable/ic_unwatch"
+                android:drawablePadding="24dp"
+                android:padding="16dp"
+                android:text="@string/singleIssueUnSubscribe"
+                android:textColor="@color/white"
+                android:textSize="16sp"
+                android:visibility="gone" />
+
             <View
                 android:layout_width="match_parent"
                 android:layout_height="1dp"
@@ -152,7 +177,8 @@
                 android:drawablePadding="24dp"
                 android:textColor="?attr/primaryTextColor"
                 android:textSize="16sp"
-                android:padding="16dp" />
+                android:padding="16dp"
+                android:visibility="gone" />
 
         </LinearLayout>
 

app/src/main/res/values/strings.xml

@@ -387,6 +387,8 @@
     <string name="addRemoveAssignees2">Add Assignees</string>
     <string name="addRemoveAssignees">Add / Remove Assignees</string>
     <string name="assigneesUpdated">Assignees updated</string>
+    <string name="singleIssueSubscribe">Subscribe</string>
+    <string name="singleIssueUnSubscribe">Unsubscribe</string>
     <!-- single issue section -->
 
     <!-- multi select dialog -->
@@ -591,4 +593,9 @@
     <string name="mtm_decision_abort">Abort</string>
 
     <string name="issueCommentShare">Share Comment</string>
+
+    <string name="issueSubscribtion">Issue Subscribed</string>
+    <string name="issueSubscribtionError">Issue Subscription failed</string>
+    <string name="issueUnsubscribtion">Issue Unsubscribed</string>
+    <string name="issueUnsubscribtionError">Issue Un-Subscription failed</string>
 </resources>