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1 /*
2  * Copyright © 2019 Damyan Ivanov.
3  * This file is part of MoLe.
4  * MoLe is free software: you can distribute it and/or modify it
5  * under the term of the GNU General Public License as published by
6  * the Free Software Foundation, either version 3 of the License, or
7  * (at your opinion), any later version.
8  *
9  * MoLe is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12  * GNU General Public License terms for details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with MoLe. If not, see <https://www.gnu.org/licenses/>.
16  */
17
18 package net.ktnx.mobileledger.ui.activity;
19
20 import android.database.Cursor;
21 import android.view.LayoutInflater;
22 import android.view.ViewGroup;
23 import android.widget.LinearLayout;
24 import android.widget.TableRow;
25
26 import androidx.annotation.NonNull;
27 import androidx.recyclerview.widget.RecyclerView;
28
29 import net.ktnx.mobileledger.App;
30 import net.ktnx.mobileledger.R;
31 import net.ktnx.mobileledger.async.DescriptionSelectedCallback;
32 import net.ktnx.mobileledger.model.Data;
33 import net.ktnx.mobileledger.model.LedgerTransaction;
34 import net.ktnx.mobileledger.model.LedgerTransactionAccount;
35 import net.ktnx.mobileledger.model.MobileLedgerProfile;
36 import net.ktnx.mobileledger.utils.Logger;
37
38 import java.util.ArrayList;
39 import java.util.Locale;
40
41 import static net.ktnx.mobileledger.utils.Logger.debug;
42
43 class NewTransactionItemsAdapter extends RecyclerView.Adapter<NewTransactionItemHolder>
44         implements DescriptionSelectedCallback {
45     NewTransactionModel model;
46     private MobileLedgerProfile mProfile;
47     NewTransactionItemsAdapter(NewTransactionModel viewModel, MobileLedgerProfile profile) {
48         super();
49         model = viewModel;
50         mProfile = profile;
51         int size = model.getAccountCount();
52         while (size < 2) {
53             Logger.debug("new-transaction",
54                     String.format(Locale.US, "%d accounts is too little, Calling addRow()", size));
55             size = addRow();
56         }
57     }
58     public void setProfile(MobileLedgerProfile profile) {
59         mProfile = profile;
60     }
61     int addRow() {
62         final int newAccountCount = model.addAccount(new LedgerTransactionAccount(""));
63         Logger.debug("new-transaction",
64                 String.format(Locale.US, "invoking notifyItemInserted(%d)", newAccountCount));
65         // the header is at position 0
66         notifyItemInserted(newAccountCount);
67         model.sendCountNotifications(); // needed after holders' positions have changed
68         return newAccountCount;
69     }
70     @NonNull
71     @Override
72     public NewTransactionItemHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
73         LinearLayout row = (LinearLayout) LayoutInflater.from(parent.getContext())
74                                                         .inflate(R.layout.new_transaction_row,
75                                                                 parent, false);
76         return new NewTransactionItemHolder(row, this);
77     }
78     @Override
79     public void onBindViewHolder(@NonNull NewTransactionItemHolder holder, int position) {
80         Logger.debug("bind", String.format(Locale.US, "Binding item at position %d", position));
81         holder.setData(model.getItem(position));
82         Logger.debug("bind", String.format(Locale.US, "Bound item at position %d", position));
83     }
84     @Override
85     public int getItemCount() {
86         return model.getAccountCount() + 2;
87     }
88     boolean accountListIsEmpty() {
89         for (int i = 0; i < model.getAccountCount(); i++) {
90             LedgerTransactionAccount acc = model.getAccount(i);
91             if (!acc.getAccountName()
92                     .isEmpty()) return false;
93             if (acc.isAmountSet()) return false;
94         }
95
96         return true;
97     }
98     public void descriptionSelected(String description) {
99         debug("descr selected", description);
100         if (!accountListIsEmpty()) return;
101
102         String accFilter = mProfile.getPreferredAccountsFilter();
103
104         ArrayList<String> params = new ArrayList<>();
105         StringBuilder sb = new StringBuilder(
106                 "select t.profile, t.id from transactions t where t.description=?");
107         params.add(description);
108
109         if (accFilter != null) {
110             sb.append(" AND EXISTS (")
111               .append("SELECT 1 FROM transaction_accounts ta ")
112               .append("WHERE ta.profile = t.profile")
113               .append(" AND ta.transaction_id = t.id")
114               .append(" AND UPPER(ta.account_name) LIKE '%'||?||'%')");
115             params.add(accFilter.toUpperCase());
116         }
117
118         sb.append(" ORDER BY date desc limit 1");
119
120         final String sql = sb.toString();
121         debug("descr", sql);
122         debug("descr", params.toString());
123
124         try (Cursor c = App.getDatabase()
125                            .rawQuery(sql, params.toArray(new String[]{})))
126         {
127             if (!c.moveToNext()) return;
128
129             String profileUUID = c.getString(0);
130             int transactionId = c.getInt(1);
131             LedgerTransaction tr;
132             MobileLedgerProfile profile = Data.getProfile(profileUUID);
133             if (profile == null) throw new RuntimeException(String.format(
134                     "Unable to find profile %s, which is supposed to contain " +
135                     "transaction %d with description %s", profileUUID, transactionId, description));
136
137             tr = profile.loadTransaction(transactionId);
138             ArrayList<LedgerTransactionAccount> accounts = tr.getAccounts();
139             TableRow firstNegative = null;
140             int negativeCount = 0;
141             for (int i = 0; i < accounts.size(); i++) {
142                 LedgerTransactionAccount acc = accounts.get(i);
143                 NewTransactionModel.Item item;
144                 if (model.getAccountCount() < i) {
145                     model.addAccount(acc);
146                     notifyItemInserted(i + 1);
147                 }
148                 item = model.getItem(i + 1);
149
150                 item.getAccount()
151                     .setAccountName(acc.getAccountName());
152                 if (acc.isAmountSet()) item.getAccount()
153                                            .setAmount(acc.getAmount());
154                 else item.getAccount()
155                          .resetAmount();
156                 notifyItemChanged(i + 1);
157             }
158         }
159         model.checkTransactionSubmittable(this);
160         model.setFocusedItem(1);
161     }
162     public void toggleAllEditing(boolean editable) {
163         for (int i = 0; i < model.getAccountCount(); i++) {
164             model.getItem(i + 1)
165                  .setEditable(editable);
166             notifyItemChanged(i + 1);
167             // TODO perhaps do only one notification about the whole range [1…count]?
168         }
169     }
170     public void reset() {
171         int presentItemCount = model.getAccountCount();
172         model.reset();
173         notifyItemChanged(0);       // header changed
174         notifyItemRangeChanged(1, 2);    // the two empty rows
175         if (presentItemCount > 2)
176             notifyItemRangeRemoved(3, presentItemCount - 2); // all the rest are gone
177     }
178 }