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.
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.
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/>.
18 package net.ktnx.mobileledger.model;
20 import android.database.Cursor;
21 import android.database.sqlite.SQLiteDatabase;
23 import net.ktnx.mobileledger.utils.Digest;
24 import net.ktnx.mobileledger.utils.Globals;
26 import java.nio.charset.Charset;
27 import java.security.NoSuchAlgorithmException;
28 import java.text.ParseException;
29 import java.util.ArrayList;
30 import java.util.Comparator;
31 import java.util.Date;
33 public class LedgerTransaction {
34 private static final String DIGEST_TYPE = "SHA-256";
35 public final Comparator<LedgerTransactionAccount> comparator =
36 new Comparator<LedgerTransactionAccount>() {
38 public int compare(LedgerTransactionAccount o1, LedgerTransactionAccount o2) {
39 int res = o1.getAccountName()
40 .compareTo(o2.getAccountName());
43 res = o1.getCurrency()
44 .compareTo(o2.getCurrency());
47 return Float.compare(o1.getAmount(), o2.getAmount());
50 private String profile;
53 private String description;
54 private ArrayList<LedgerTransactionAccount> accounts;
55 private String dataHash;
56 private boolean dataLoaded;
57 public LedgerTransaction(Integer id, String dateString, String description)
58 throws ParseException {
59 this(id, Globals.parseLedgerDate(dateString), description);
61 public LedgerTransaction(Integer id, Date date, String description,
62 MobileLedgerProfile profile) {
63 this.profile = profile.getUuid();
66 this.description = description;
67 this.accounts = new ArrayList<>();
71 public LedgerTransaction(Integer id, Date date, String description) {
72 this(id, date, description, Data.profile.getValue());
74 public LedgerTransaction(Date date, String description) {
75 this(null, date, description);
77 public LedgerTransaction(int id) {
78 this(id, (Date) null, null);
80 public LedgerTransaction(int id, String profileUUID) {
81 this.profile = profileUUID;
84 this.description = null;
85 this.accounts = new ArrayList<>();
87 this.dataLoaded = false;
89 public ArrayList<LedgerTransactionAccount> getAccounts() {
92 public void addAccount(LedgerTransactionAccount item) {
96 public Date getDate() {
99 public void setDate(Date date) {
103 public String getDescription() {
106 public void setDescription(String description) {
107 this.description = description;
113 protected void fillDataHash() {
114 if (dataHash != null)
117 Digest sha = new Digest(DIGEST_TYPE);
118 StringBuilder data = new StringBuilder();
119 data.append(profile);
120 data.append(getId());
122 data.append(getDescription());
124 data.append(Globals.formatLedgerDate(getDate()));
126 for (LedgerTransactionAccount item : accounts) {
127 data.append(item.getAccountName());
129 data.append(item.getCurrency());
131 data.append(item.getAmount());
133 sha.update(data.toString()
134 .getBytes(Charset.forName("UTF-8")));
135 dataHash = sha.digestToHexString();
137 catch (NoSuchAlgorithmException e) {
138 throw new RuntimeException(
139 String.format("Unable to get instance of %s digest", DIGEST_TYPE), e);
142 public boolean existsInDb(SQLiteDatabase db) {
144 try (Cursor c = db.rawQuery("SELECT 1 from transactions where data_hash = ?",
145 new String[]{dataHash}))
147 boolean result = c.moveToFirst();
148 // debug("db", String.format("Transaction %d (%s) %s", id, dataHash,
149 // result ? "already present" : "not present"));
153 public void loadData(SQLiteDatabase db) {
157 try (Cursor cTr = db.rawQuery(
158 "SELECT date, description from transactions WHERE profile=? AND id=?",
159 new String[]{profile, String.valueOf(id)}))
161 if (cTr.moveToFirst()) {
162 String dateString = cTr.getString(0);
164 date = Globals.parseLedgerDate(dateString);
166 catch (ParseException e) {
168 throw new RuntimeException(
169 String.format("Error parsing date '%s' from " + "transacion %d",
172 description = cTr.getString(1);
174 try (Cursor cAcc = db.rawQuery("SELECT account_name, amount, currency FROM " +
175 "transaction_accounts WHERE " +
176 "profile=? AND transaction_id = ?",
177 new String[]{profile, String.valueOf(id)}))
179 while (cAcc.moveToNext()) {
180 // debug("transactions",
181 // String.format("Loaded %d: %s %1.2f %s", id, cAcc.getString(0),
182 // cAcc.getFloat(1), cAcc.getString(2)));
183 addAccount(new LedgerTransactionAccount(cAcc.getString(0), cAcc.getFloat(1),
193 public String getDataHash() {
196 public void finishLoading() {