Added rule check

app/src/main/java/eu/faircode/email/AdapterRuleMatch.java

@@ -0,0 +1,189 @@
+package eu.faircode.email;
+
+/*
+    This file is part of FairEmail.
+
+    FairEmail is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    FairEmail is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with FairEmail.  If not, see <http://www.gnu.org/licenses/>.
+
+    Copyright 2018-2019 by Marcel Bokhorst (M66B)
+*/
+
+import android.content.Context;
+import android.content.Intent;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.lifecycle.LifecycleOwner;
+import androidx.localbroadcastmanager.content.LocalBroadcastManager;
+import androidx.recyclerview.widget.DiffUtil;
+import androidx.recyclerview.widget.ListUpdateCallback;
+import androidx.recyclerview.widget.RecyclerView;
+
+import java.text.DateFormat;
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.List;
+
+public class AdapterRuleMatch extends RecyclerView.Adapter<AdapterRuleMatch.ViewHolder> {
+    private Context context;
+    private LifecycleOwner owner;
+    private LayoutInflater inflater;
+
+    private List<EntityMessage> items = new ArrayList<>();
+
+    private DateFormat DF = SimpleDateFormat.getDateTimeInstance(SimpleDateFormat.SHORT, SimpleDateFormat.SHORT);
+
+    public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
+        private View view;
+        private TextView tvTime;
+        private TextView tvSubject;
+
+        ViewHolder(View itemView) {
+            super(itemView);
+
+            view = itemView.findViewById(R.id.clItem);
+            tvTime = itemView.findViewById(R.id.tvTime);
+            tvSubject = itemView.findViewById(R.id.tvSubject);
+        }
+
+        private void wire() {
+            view.setOnClickListener(this);
+        }
+
+        private void unwire() {
+            view.setOnClickListener(null);
+        }
+
+        private void bindTo(EntityMessage message) {
+            tvTime.setText(DF.format(message.received));
+            tvSubject.setText(message.subject);
+        }
+
+        @Override
+        public void onClick(View v) {
+            int pos = getAdapterPosition();
+            if (pos == RecyclerView.NO_POSITION)
+                return;
+
+            EntityMessage message = items.get(pos);
+
+            LocalBroadcastManager lbm = LocalBroadcastManager.getInstance(context);
+            lbm.sendBroadcast(
+                    new Intent(ActivityView.ACTION_VIEW_THREAD)
+                            .putExtra("account", message.account)
+                            .putExtra("thread", message.thread)
+                            .putExtra("id", message.id)
+                            .putExtra("found", false));
+        }
+    }
+
+    AdapterRuleMatch(Context context, LifecycleOwner owner) {
+        this.context = context;
+        this.owner = owner;
+        this.inflater = LayoutInflater.from(context);
+        setHasStableIds(true);
+    }
+
+    public void set(@NonNull List<EntityMessage> messages) {
+        Log.i("Set matched messages=" + messages.size());
+
+        DiffUtil.DiffResult diff = DiffUtil.calculateDiff(new DiffCallback(items, messages), false);
+
+        items = messages;
+
+        diff.dispatchUpdatesTo(new ListUpdateCallback() {
+            @Override
+            public void onInserted(int position, int count) {
+                Log.i("Inserted @" + position + " #" + count);
+            }
+
+            @Override
+            public void onRemoved(int position, int count) {
+                Log.i("Removed @" + position + " #" + count);
+            }
+
+            @Override
+            public void onMoved(int fromPosition, int toPosition) {
+                Log.i("Moved " + fromPosition + ">" + toPosition);
+            }
+
+            @Override
+            public void onChanged(int position, int count, Object payload) {
+                Log.i("Changed @" + position + " #" + count);
+            }
+        });
+        diff.dispatchUpdatesTo(this);
+    }
+
+    private class DiffCallback extends DiffUtil.Callback {
+        private List<EntityMessage> prev = new ArrayList<>();
+        private List<EntityMessage> next = new ArrayList<>();
+
+        DiffCallback(List<EntityMessage> prev, List<EntityMessage> next) {
+            this.prev.addAll(prev);
+            this.next.addAll(next);
+        }
+
+        @Override
+        public int getOldListSize() {
+            return prev.size();
+        }
+
+        @Override
+        public int getNewListSize() {
+            return next.size();
+        }
+
+        @Override
+        public boolean areItemsTheSame(int oldItemPosition, int newItemPosition) {
+            EntityMessage m1 = prev.get(oldItemPosition);
+            EntityMessage m2 = next.get(newItemPosition);
+            return m1.id.equals(m2.id);
+        }
+
+        @Override
+        public boolean areContentsTheSame(int oldItemPosition, int newItemPosition) {
+            EntityMessage m1 = prev.get(oldItemPosition);
+            EntityMessage m2 = next.get(newItemPosition);
+            return m1.id.equals(m2.id);
+        }
+    }
+
+    @Override
+    public long getItemId(int position) {
+        return items.get(position).id;
+    }
+
+    @Override
+    public int getItemCount() {
+        return items.size();
+    }
+
+    @Override
+    @NonNull
+    public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+        return new ViewHolder(inflater.inflate(R.layout.item_rule_match, parent, false));
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
+        holder.unwire();
+        EntityMessage message = items.get(position);
+        holder.bindTo(message);
+        holder.wire();
+    }
+}

app/src/main/java/eu/faircode/email/EntityRule.java

@@ -152,7 +152,7 @@ public class EntityRule {
             }
 
             JSONObject jheader = jcondition.optJSONObject("header");
-            if (jheader != null) {
+            if (jheader != null && imessage != null) {
                 String value = jheader.getString("value");
                 boolean regex = jheader.getBoolean("regex");
 

app/src/main/java/eu/faircode/email/FragmentRule.java

@@ -49,6 +49,8 @@ import androidx.annotation.Nullable;
 import androidx.constraintlayout.widget.ConstraintLayout;
 import androidx.constraintlayout.widget.Group;
 import androidx.fragment.app.FragmentTransaction;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
 
 import com.android.colorpicker.ColorPickerDialog;
 import com.android.colorpicker.ColorPickerSwatch;
@@ -124,6 +126,8 @@ public class FragmentRule extends FragmentBase {
     private long folder = -1;
     private Integer color = null;
 
+    private final static int MAX_CHECK = 10;
+
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -309,6 +313,9 @@ public class FragmentRule extends FragmentBase {
                     case R.id.action_delete:
                         onActionTrash();
                         return true;
+                    case R.id.action_check:
+                        onActionCheck();
+                        return true;
                     case R.id.action_save:
                         onActionSave();
                         return true;
@@ -577,6 +584,86 @@ public class FragmentRule extends FragmentBase {
                 .show();
     }
 
+    private void onActionCheck() {
+        try {
+            JSONObject jcondition = getCondition();
+
+            JSONObject jheader = jcondition.optJSONObject("header");
+            if (jheader != null) {
+                Snackbar.make(view, R.string.title_rule_no_headers, Snackbar.LENGTH_LONG).show();
+                return;
+            }
+
+            final View dview = LayoutInflater.from(getContext()).inflate(R.layout.dialog_rule_match, null);
+            final TextView tvNoMessages = dview.findViewById(R.id.tvNoMessages);
+            final RecyclerView rvMessage = dview.findViewById(R.id.rvMessage);
+            final ContentLoadingProgressBar pbWait = dview.findViewById(R.id.pbWait);
+
+            rvMessage.setHasFixedSize(false);
+            LinearLayoutManager llm = new LinearLayoutManager(getContext());
+            rvMessage.setLayoutManager(llm);
+
+            final AdapterRuleMatch adapter = new AdapterRuleMatch(getContext(), getViewLifecycleOwner());
+            rvMessage.setAdapter(adapter);
+
+            tvNoMessages.setVisibility(View.GONE);
+            rvMessage.setVisibility(View.GONE);
+            pbWait.setVisibility(View.VISIBLE);
+
+            new DialogBuilderLifecycle(getContext(), getViewLifecycleOwner())
+                    .setTitle(R.string.title_rule_matched)
+                    .setView(dview)
+                    .show();
+
+            Bundle args = new Bundle();
+            args.putLong("folder", folder);
+            args.putString("condition", jcondition.toString());
+
+            new SimpleTask<List<EntityMessage>>() {
+                @Override
+                protected List<EntityMessage> onExecute(Context context, Bundle args) throws Throwable {
+                    long fid = args.getLong("folder");
+                    EntityRule rule = new EntityRule();
+                    rule.condition = args.getString("condition");
+
+                    List<EntityMessage> matching = new ArrayList<>();
+
+                    DB db = DB.getInstance(context);
+                    List<Long> ids = db.message().getMessageIdsByFolder(fid);
+                    for (long id : ids) {
+                        EntityMessage message = db.message().getMessage(id);
+
+                        if (rule.matches(context, message, null))
+                            matching.add(message);
+
+                        if (matching.size() >= MAX_CHECK)
+                            break;
+                    }
+
+                    return matching;
+                }
+
+                @Override
+                protected void onExecuted(Bundle args, List<EntityMessage> messages) {
+                    adapter.set(messages);
+
+                    pbWait.setVisibility(View.GONE);
+                    if (messages.size() > 0)
+                        rvMessage.setVisibility(View.VISIBLE);
+                    else
+                        tvNoMessages.setVisibility(View.VISIBLE);
+                }
+
+                @Override
+                protected void onException(Bundle args, Throwable ex) {
+                    Helper.unexpectedError(getContext(), getViewLifecycleOwner(), ex);
+                }
+            }.execute(this, args, "rule:check");
+        } catch (JSONException ex) {
+            Log.e(ex);
+        }
+    }
+
     private void onActionSave() {
         if (!Helper.isPro(getContext())) {
             FragmentTransaction fragmentTransaction = getFragmentManager().beginTransaction();

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

@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <TextView
+        android:id="@+id/tvNoMessages"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:padding="24dp"
+        android:text="@string/title_rule_no_matches"
+        android:textAppearance="@style/TextAppearance.AppCompat.Medium"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/rvMessage"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:padding="12dp"
+        android:scrollbarStyle="outsideOverlay"
+        android:scrollbars="vertical"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <eu.faircode.email.ContentLoadingProgressBar
+        android:id="@+id/pbWait"
+        style="@style/Base.Widget.AppCompat.ProgressBar"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:indeterminate="true"
+        android:padding="24dp"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+</androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content">
+
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:id="@+id/clItem"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:background="?attr/activatableItemBackground"
+        android:foreground="?attr/selectableItemBackground"
+        android:padding="6dp">
+
+        <TextView
+            android:id="@+id/tvTime"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginEnd="6dp"
+            android:maxLines="1"
+            android:text="12:34:56"
+            android:textAppearance="@style/TextAppearance.AppCompat.Small"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />
+
+        <TextView
+            android:id="@+id/tvSubject"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="6dp"
+            android:layout_marginEnd="6dp"
+            android:ellipsize="middle"
+            android:singleLine="true"
+            android:text="Subject"
+            android:textAppearance="@style/TextAppearance.AppCompat.Small"
+            app:layout_constraintStart_toEndOf="@id/tvTime"
+            app:layout_constraintTop_toTopOf="parent" />
+    </androidx.constraintlayout.widget.ConstraintLayout>
+</FrameLayout>

app/src/main/res/menu/action_rule.xml

@@ -6,6 +6,11 @@
         android:icon="@drawable/baseline_delete_24"
         android:title="@string/title_delete" />
 
+    <item
+        android:id="@+id/action_check"
+        android:icon="@drawable/baseline_check_24"
+        android:title="@string/title_rule_check" />
+
     <item
         android:id="@+id/action_save"
         android:icon="@drawable/baseline_save_alt_24"

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

@@ -567,6 +567,11 @@
     <string name="title_rule_condition_missing">Condition missing</string>
     <string name="title_rule_automation_hint">This will send the intent \'%1$s\' with the extras \'%2$s\'</string>
 
+    <string name="title_rule_check">Check</string>
+    <string name="title_rule_no_headers">Header conditions cannot be checked</string>
+    <string name="title_rule_matched">Matching messages</string>
+    <string name="title_rule_no_matches">No matching messages</string>
+
     <string name="title_legend_section_synchronize">Synchronize</string>
     <string name="title_legend_section_folders">Folders</string>
     <string name="title_legend_section_messages">Messages</string>