streamlined database utility, fed with the application context upon startup

[mobile-ledger.git] / app / src / main / java / net / ktnx / mobileledger / ui / transaction_list / TransactionListViewModel.java

diff --git a/app/src/main/java/net/ktnx/mobileledger/ui/transaction_list/TransactionListViewModel.java b/app/src/main/java/net/ktnx/mobileledger/ui/transaction_list/TransactionListViewModel.java
index d0c979e6df9b06ea6325fa80c3e906f5f3a78e62..52fb19761d19a6adcda5bdd14643873ffcbed927 100644 (file)
--- a/app/src/main/java/net/ktnx/mobileledger/ui/transaction_list/TransactionListViewModel.java
+++ b/app/src/main/java/net/ktnx/mobileledger/ui/transaction_list/TransactionListViewModel.java
@@ -17,54 +17,70 @@
 
 package net.ktnx.mobileledger.ui.transaction_list;
 
+import android.app.Activity;
 import android.arch.lifecycle.ViewModel;
 import android.database.Cursor;
 import android.database.sqlite.SQLiteDatabase;
+import android.util.Log;
+import android.view.View;
+import android.widget.AutoCompleteTextView;
 
+import net.ktnx.mobileledger.R;
 import net.ktnx.mobileledger.model.LedgerTransaction;
-import net.ktnx.mobileledger.model.LedgerTransactionItem;
-import net.ktnx.mobileledger.utils.MobileLedgerDatabase;
+import net.ktnx.mobileledger.utils.MLDB;
 
 import java.util.ArrayList;
-import java.util.List;
 
 public class TransactionListViewModel extends ViewModel {
 
-    private List<LedgerTransaction> transactions;
+    private ArrayList<LedgerTransaction> transactions;
 
-    public List<LedgerTransaction> getTransactions(MobileLedgerDatabase dbh) {
-        if (transactions == null) {
-            transactions = new ArrayList<>();
-            reloadTransactions(dbh);
-        }
+    public void reloadTransactions(TransactionListFragment context) {
+        ArrayList<LedgerTransaction> newList = new ArrayList<>();
 
-        return transactions;
-    }
-    private void reloadTransactions(MobileLedgerDatabase dbh) {
-        transactions.clear();
-        String sql = "SELECT id, date, description FROM transactions";
-        sql += " ORDER BY date desc, id desc";
+        Activity act = context.getActivity();
+
+        boolean hasFilter =
+                act.findViewById(R.id.transaction_list_account_name_filter).getVisibility() ==
+                View.VISIBLE;
+
+        String sql;
+        String[] params;
+
+        sql = "SELECT id FROM transactions  ORDER BY date desc, id desc";
+        params = null;
+
+        if (hasFilter) {
+            String filterAccName = String.valueOf(
+                    ((AutoCompleteTextView) act.findViewById(R.id.transaction_filter_account_name))
+                            .getText());
 
-        try (SQLiteDatabase db = dbh.getReadableDatabase()) {
-            try (Cursor cursor = db.rawQuery(sql, null)) {
+            if (!filterAccName.isEmpty()) {
+                sql = "SELECT distinct tr.id from transactions tr JOIN transaction_accounts ta " +
+                      "ON ta.transaction_id=tr.id WHERE ta.account_name LIKE ?||'%' AND ta" +
+                      ".amount <> 0 ORDER BY tr.date desc, tr.id desc";
+                params = new String[]{filterAccName};
+            }
+        }
+
+        Log.d("tmp", sql);
+        try (SQLiteDatabase db = MLDB.getReadableDatabase()) {
+            try (Cursor cursor = db.rawQuery(sql, params)) {
                 while (cursor.moveToNext()) {
-                    LedgerTransaction tr =
-                            new LedgerTransaction(cursor.getString(0), cursor.getString(1),
-                                    cursor.getString(2));
-                    try (Cursor cAcc = db.rawQuery("SELECT account_name, amount, currency FROM " +
-                                                   "transaction_accounts WHERE transaction_id = ?",
-                            new String[]{tr.getId()}))
-                    {
-                        while (cAcc.moveToNext()) {
-                            tr.add_item(
-                                    new LedgerTransactionItem(cAcc.getString(0), cAcc.getFloat(1),
-                                            cAcc.getString(2)));
-                        }
-                    }
-                    transactions.add(tr);
+                    newList.add(new LedgerTransaction(cursor.getInt(0)));
                 }
+                transactions = newList;
+                Log.d("transactions", "transaction list updated");
             }
         }
 
     }
+    public LedgerTransaction getTransaction(int position) {
+        if (position >= transactions.size()) return null;
+        return transactions.get(position);
+    }
+    public int getTransactionCount() {
+        if (transactions == null) return 0;
+        return transactions.size();
+    }
 }