Fetch all tellers from the webservice.

- Modified the method that fetches the tellers from the webservice to keep requesting the tellers list until nothing is returned, to make sure the whole list of tellers is obtained.

app/src/main/java/cy/agorise/bitsybitshareswallet/repositories/TellerRepository.kt

@@ -21,13 +21,27 @@ class TellerRepository internal constructor(val context: Context) : retrofit2.Ca
 
     companion object {
         private const val TAG = "TellerRepository"
+
+        private const val TELLERS_QUERY_LIMIT = 50
     }
 
     private val mTellerDao: TellerDao
 
+    private val tellersList = mutableListOf<Teller>()
+    private var tellersSkip = 0
+
+    private val bitsyWebservice: BitsyWebservice
+
     init {
         val db = BitsyDatabase.getDatabase(context)
         mTellerDao = db!!.tellerDao()
+
+        val retrofit = Retrofit.Builder()
+            .baseUrl(Constants.BITSY_WEBSERVICE_URL)
+            .addConverterFactory(GsonConverterFactory.create())
+            .build()
+
+        bitsyWebservice = retrofit.create<BitsyWebservice>(BitsyWebservice::class.java)
     }
 
     /** Returns a LiveData object directly from the database while the response from the WebService is obtained. */
@@ -45,15 +59,8 @@ class TellerRepository internal constructor(val context: Context) : retrofit2.Ca
 
         if (lastTellerUpdate + Constants.MERCHANTS_UPDATE_PERIOD < now) {
             Log.d(TAG, "Updating tellers from webservice")
-            // TODO make sure it works when there are more tellers than those sent back in the first response
-            val retrofit = Retrofit.Builder()
-                .baseUrl(Constants.BITSY_WEBSERVICE_URL)
-                .addConverterFactory(GsonConverterFactory.create())
-                .build()
-
-            val bitsyWebservice = retrofit.create<BitsyWebservice>(BitsyWebservice::class.java)
-            val call = bitsyWebservice.getTellers(0)
-            call.enqueue(this)
+            val request = bitsyWebservice.getTellers(tellersSkip, TELLERS_QUERY_LIMIT)
+            request.enqueue(this)
         }
     }
 
@@ -61,23 +68,29 @@ class TellerRepository internal constructor(val context: Context) : retrofit2.Ca
         if (response.isSuccessful) {
             val res: FeathersResponse<Teller>? = response.body()
             val tellers = res?.data ?: return
-            insertAllAsyncTask(mTellerDao).execute(tellers)
 
-            val now = System.currentTimeMillis()
-            PreferenceManager.getDefaultSharedPreferences(context).edit()
-                .putLong(Constants.KEY_TELLERS_LAST_UPDATE, now).apply()
+            if (tellers.isNotEmpty()) {
+                tellersList.addAll(tellers)
+                tellersSkip += TELLERS_QUERY_LIMIT
+
+                val request = bitsyWebservice.getTellers(tellersSkip, TELLERS_QUERY_LIMIT)
+                request.enqueue(this)
+            } else {
+                updateTellers(tellersList)
+
+                val now = System.currentTimeMillis()
+                PreferenceManager.getDefaultSharedPreferences(context).edit()
+                    .putLong(Constants.KEY_TELLERS_LAST_UPDATE, now).apply()
+            }
         }
     }
 
     override fun onFailure(call: Call<FeathersResponse<Teller>>, t: Throwable) { /* Do nothing */ }
 
-    private class insertAllAsyncTask internal constructor(private val mAsyncTaskDao: TellerDao) :
-        AsyncTask<List<Teller>, Void, Void>() {
-
-        override fun doInBackground(vararg tellers: List<Teller>): Void? {
-            mAsyncTaskDao.deleteAll()
-            mAsyncTaskDao.insertAll(tellers[0])
-            return null
+    private fun updateTellers(tellers: List<Teller>) {
+        AsyncTask.execute {
+            mTellerDao.deleteAll()
+            mTellerDao.insertAll(tellers)
         }
     }