Migrate legacy color palette.

We don't store non-user-selected colors in the database. That means that
when we update the palette, we still have to hash based off of the legacy
palette when generating a color if we want to migrate to a
similar-looking color.

Unfortunately, because the new palette is smaller, some colors are
"overloaded", meaning that when we hash based off of the legacy palette,
some colors will be more/less common than others. To fix this, we simply
persist all current colors in the database, then switch our hashing list
to what we really want.

src/org/thoughtcrime/securesms/DatabaseUpgradeActivity.java

@@ -30,6 +30,8 @@ import org.thoughtcrime.securesms.jobmanager.Job;
 import org.thoughtcrime.securesms.jobmanager.JobManager;
 import org.thoughtcrime.securesms.jobmanager.persistence.JavaJobSerializer;
 import org.thoughtcrime.securesms.jobmanager.persistence.PersistentStorage;
+import org.thoughtcrime.securesms.color.MaterialColor;
+import org.thoughtcrime.securesms.contacts.avatars.ContactColorsLegacy;
 import org.thoughtcrime.securesms.logging.Log;
 import android.view.View;
 import android.widget.ProgressBar;
@@ -50,6 +52,7 @@ import org.thoughtcrime.securesms.jobs.PushDecryptJob;
 import org.thoughtcrime.securesms.jobs.RefreshAttributesJob;
 import org.thoughtcrime.securesms.mms.GlideApp;
 import org.thoughtcrime.securesms.notifications.MessageNotifier;
+import org.thoughtcrime.securesms.recipients.Recipient;
 import org.thoughtcrime.securesms.service.KeyCachingService;
 import org.thoughtcrime.securesms.util.FileUtils;
 import org.thoughtcrime.securesms.util.TextSecurePreferences;
@@ -91,6 +94,7 @@ public class DatabaseUpgradeActivity extends BaseActivity {
   public static final int BAD_IMPORT_CLEANUP                   = 373;
   public static final int IMAGE_CACHE_CLEANUP                  = 406;
   public static final int WORKMANAGER_MIGRATION                = 408;
+  public static final int COLOR_MIGRATION                      = 412;
 
   private static final SortedSet<Integer> UPGRADE_VERSIONS = new TreeSet<Integer>() {{
     add(NO_MORE_KEY_EXCHANGE_PREFIX_VERSION);
@@ -115,6 +119,7 @@ public class DatabaseUpgradeActivity extends BaseActivity {
     add(BAD_IMPORT_CLEANUP);
     add(IMAGE_CACHE_CLEANUP);
     add(WORKMANAGER_MIGRATION);
+    add(COLOR_MIGRATION);
   }};
 
   private MasterSecret masterSecret;
@@ -337,6 +342,22 @@ public class DatabaseUpgradeActivity extends BaseActivity {
         }
       }
 
+      if (params[0] < COLOR_MIGRATION) {
+        long startTime = System.currentTimeMillis();
+        DatabaseFactory.getRecipientDatabase(context).updateSystemContactColors((name, color) -> {
+          if (color != null) {
+            try {
+              return MaterialColor.fromSerialized(color);
+            } catch (MaterialColor.UnknownColorException e) {
+              Log.w(TAG, "Encountered an unknown color during legacy color migration.", e);
+              return ContactColorsLegacy.generateFor(name);
+            }
+          }
+          return ContactColorsLegacy.generateFor(name);
+        });
+        Log.i(TAG, "Color migration took " + (System.currentTimeMillis() - startTime) + " ms");
+      }
+
       return null;
     }
 

src/org/thoughtcrime/securesms/color/MaterialColor.java

@@ -29,7 +29,7 @@ public enum MaterialColor {
 
   private static final Map<String, MaterialColor> COLOR_MATCHES = new HashMap<String, MaterialColor>() {{
     put("red",         CRIMSON);
-    put("deep_orange", VERMILLION);
+    put("deep_orange", CRIMSON);
     put("orange",      VERMILLION);
     put("amber",       VERMILLION);
     put("brown",       BURLAP);

src/org/thoughtcrime/securesms/contacts/avatars/ContactColors.java

@@ -5,35 +5,30 @@ import android.support.annotation.NonNull;
 import org.thoughtcrime.securesms.color.MaterialColor;
 import org.thoughtcrime.securesms.color.MaterialColors;
 
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
 public class ContactColors {
 
   public static final MaterialColor UNKNOWN_COLOR = MaterialColor.STEEL;
 
-  private static final String[] LEGACY_PALETTE = new String[] {
-      "red",
-      "pink",
-      "purple",
-      "deep_purple",
-      "indigo",
-      "blue",
-      "light_blue",
-      "cyan",
-      "teal",
-      "green",
-      "light_green",
-      "orange",
-      "deep_orange",
-      "amber",
-      "blue_grey"
-  };
+  private static final List<MaterialColor> CONVERSATION_PALETTE = new ArrayList<>(Arrays.asList(
+      MaterialColor.PLUM,
+      MaterialColor.CRIMSON,
+      MaterialColor.VERMILLION,
+      MaterialColor.VIOLET,
+      MaterialColor.BLUE,
+      MaterialColor.INDIGO,
+      MaterialColor.FOREST,
+      MaterialColor.WINTERGREEN,
+      MaterialColor.TEAL,
+      MaterialColor.BURLAP,
+      MaterialColor.TAUPE,
+      MaterialColor.STEEL
+  ));
 
   public static MaterialColor generateFor(@NonNull String name) {
-    String serialized = LEGACY_PALETTE[Math.abs(name.hashCode()) % LEGACY_PALETTE.length];
-    try {
-      return MaterialColor.fromSerialized(serialized);
-    } catch (MaterialColor.UnknownColorException e) {
-      return MaterialColors.CONVERSATION_PALETTE.get(Math.abs(name.hashCode()) % MaterialColors.CONVERSATION_PALETTE.size());
-    }
+    return CONVERSATION_PALETTE.get(Math.abs(name.hashCode()) % CONVERSATION_PALETTE.size());
   }
-
 }

src/org/thoughtcrime/securesms/contacts/avatars/ContactColorsLegacy.java

@@ -0,0 +1,40 @@
+package org.thoughtcrime.securesms.contacts.avatars;
+
+import android.support.annotation.NonNull;
+
+import org.thoughtcrime.securesms.color.MaterialColor;
+import org.thoughtcrime.securesms.color.MaterialColors;
+
+/**
+ * Used for migrating legacy colors to modern colors. For normal color generation, use
+ * {@link ContactColors}.
+ */
+public class ContactColorsLegacy {
+
+  private static final String[] LEGACY_PALETTE = new String[] {
+      "red",
+      "pink",
+      "purple",
+      "deep_purple",
+      "indigo",
+      "blue",
+      "light_blue",
+      "cyan",
+      "teal",
+      "green",
+      "light_green",
+      "orange",
+      "deep_orange",
+      "amber",
+      "blue_grey"
+  };
+
+  public static MaterialColor generateFor(@NonNull String name) {
+    String serialized = LEGACY_PALETTE[Math.abs(name.hashCode()) % LEGACY_PALETTE.length];
+    try {
+      return MaterialColor.fromSerialized(serialized);
+    } catch (MaterialColor.UnknownColorException e) {
+      return ContactColors.generateFor(name);
+    }
+  }
+}

src/org/thoughtcrime/securesms/database/RecipientDatabase.java

@@ -27,6 +27,7 @@ import java.util.LinkedList;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
+import java.util.function.Consumer;
 
 public class RecipientDatabase extends Database {
 
@@ -150,7 +151,6 @@ public class RecipientDatabase extends Database {
     return new RecipientReader(context, cursor);
   }
 
-
   public Optional<RecipientSettings> getRecipientSettings(@NonNull Address address) {
     SQLiteDatabase database = databaseHelper.getReadableDatabase();
     Cursor         cursor   = null;
@@ -410,6 +410,35 @@ public class RecipientDatabase extends Database {
     return results;
   }
 
+  public void updateSystemContactColors(@NonNull ColorUpdater updater) {
+    SQLiteDatabase              db      = databaseHelper.getReadableDatabase();
+    Map<Address, MaterialColor> updates = new HashMap<>();
+
+    db.beginTransaction();
+    try (Cursor cursor = db.query(TABLE_NAME, new String[] {ADDRESS, COLOR, SYSTEM_DISPLAY_NAME}, SYSTEM_DISPLAY_NAME + " IS NOT NULL AND " + SYSTEM_DISPLAY_NAME + " != \"\"", null, null, null, null)) {
+      while (cursor != null && cursor.moveToNext()) {
+        Address address = Address.fromSerialized(cursor.getString(cursor.getColumnIndexOrThrow(ADDRESS)));
+        MaterialColor newColor = updater.update(cursor.getString(cursor.getColumnIndexOrThrow(SYSTEM_DISPLAY_NAME)),
+                                                cursor.getString(cursor.getColumnIndexOrThrow(COLOR)));
+
+        ContentValues contentValues = new ContentValues(1);
+        contentValues.put(COLOR, newColor.serialize());
+        db.update(TABLE_NAME, contentValues, ADDRESS + " = ?", new String[]{address.serialize()});
+
+        updates.put(address, newColor);
+      }
+    } finally {
+      db.setTransactionSuccessful();
+      db.endTransaction();
+
+      Stream.of(updates.entrySet()).forEach(entry -> {
+        Recipient.applyCached(entry.getKey(), recipient -> {
+          recipient.setColor(entry.getValue());
+        });
+      });
+    }
+  }
+
   // XXX This shouldn't be here, and is just a temporary workaround
   public RegisteredState isRegistered(@NonNull Address address) {
     SQLiteDatabase db = databaseHelper.getReadableDatabase();
@@ -472,6 +501,10 @@ public class RecipientDatabase extends Database {
     }
   }
 
+  public interface ColorUpdater {
+    MaterialColor update(@NonNull String name, @Nullable String color);
+  }
+
   public static class RecipientSettings {
     private final boolean         blocked;
     private final long            muteUntil;
@@ -633,7 +666,7 @@ public class RecipientDatabase extends Database {
     }
 
     public @Nullable Recipient getNext() {
-      if (!cursor.moveToNext()) {
+      if (cursor != null && !cursor.moveToNext()) {
         return null;
       }