make sure clips have unique values

app/src/main/kotlin/com/simplemobiletools/keyboard/adapters/ClipsActivityAdapter.kt

@@ -20,6 +20,7 @@ import com.simplemobiletools.commons.views.bottomactionmenu.BottomActionMenuView
 import com.simplemobiletools.keyboard.R
 import com.simplemobiletools.keyboard.dialogs.AddOrEditClipDialog
 import com.simplemobiletools.keyboard.extensions.clipsDB
+import com.simplemobiletools.keyboard.helpers.ClipsHelper
 import com.simplemobiletools.keyboard.models.Clip
 import kotlinx.android.synthetic.main.item_clip_in_activity.view.*
 import java.util.*
@@ -80,7 +81,7 @@ class ClipsActivityAdapter(
                 activity.clipsDB.deleteAll()
                 items.forEach { clip ->
                     clip.id = null
-                    clip.id = activity.clipsDB.insertOrUpdate(clip)
+                    clip.id = ClipsHelper(activity).insertClip(clip)
                 }
             }
 

app/src/main/kotlin/com/simplemobiletools/keyboard/adapters/ClipsKeyboardAdapter.kt

@@ -18,6 +18,7 @@ import com.simplemobiletools.keyboard.R
 import com.simplemobiletools.keyboard.extensions.clipsDB
 import com.simplemobiletools.keyboard.extensions.config
 import com.simplemobiletools.keyboard.extensions.getCurrentClip
+import com.simplemobiletools.keyboard.helpers.ClipsHelper
 import com.simplemobiletools.keyboard.helpers.ITEM_CLIP
 import com.simplemobiletools.keyboard.helpers.ITEM_SECTION_LABEL
 import com.simplemobiletools.keyboard.interfaces.RefreshClipsListener
@@ -99,7 +100,7 @@ class ClipsKeyboardAdapter(
                         ensureBackgroundThread {
                             val currentClip = context.getCurrentClip() ?: return@ensureBackgroundThread
                             val clip = Clip(null, currentClip)
-                            context.clipsDB.insertOrUpdate(clip)
+                            ClipsHelper(context).insertClip(clip)
                             refreshClipsListener.refreshClips()
                             context.toast(R.string.text_pinned)
                             if (context.config.vibrateOnKeypress) {

app/src/main/kotlin/com/simplemobiletools/keyboard/dialogs/AddOrEditClipDialog.kt

@@ -9,6 +9,7 @@ import com.simplemobiletools.commons.extensions.value
 import com.simplemobiletools.commons.helpers.ensureBackgroundThread
 import com.simplemobiletools.keyboard.R
 import com.simplemobiletools.keyboard.extensions.clipsDB
+import com.simplemobiletools.keyboard.helpers.ClipsHelper
 import com.simplemobiletools.keyboard.models.Clip
 import kotlinx.android.synthetic.main.dialog_add_or_edit_clip.view.*
 
@@ -39,7 +40,7 @@ class AddOrEditClipDialog(val activity: BaseSimpleActivity, val originalClip: Cl
                         }
 
                         ensureBackgroundThread {
-                            activity.clipsDB.insertOrUpdate(clip)
+                            ClipsHelper(activity).insertClip(clip)
                             activity.runOnUiThread {
                                 callback()
                                 dismiss()

app/src/main/kotlin/com/simplemobiletools/keyboard/helpers/ClipsHelper.kt

@@ -0,0 +1,18 @@
+package com.simplemobiletools.keyboard.helpers
+
+import android.content.Context
+import com.simplemobiletools.keyboard.extensions.clipsDB
+import com.simplemobiletools.keyboard.models.Clip
+
+class ClipsHelper(val context: Context) {
+
+    // make sure clips have unique values
+    fun insertClip(clip: Clip): Long {
+        clip.value = clip.value.trim()
+        return if (context.clipsDB.getClipWithValue(clip.value) == null) {
+            context.clipsDB.insertOrUpdate(clip)
+        } else {
+            -1
+        }
+    }
+}

app/src/main/kotlin/com/simplemobiletools/keyboard/interfaces/ClipsDao.kt

@@ -11,6 +11,9 @@ interface ClipsDao {
     @Query("SELECT * FROM clips ORDER BY id")
     fun getClips(): List<Clip>
 
+    @Query("SELECT id FROM clips WHERE value = :value COLLATE NOCASE")
+    fun getClipWithValue(value: String): Long?
+
     @Insert(onConflict = OnConflictStrategy.REPLACE)
     fun insertOrUpdate(clip: Clip): Long