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.StandardCharsets;
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());
48 .compareTo(o2.getComment());
51 return Float.compare(o1.getAmount(), o2.getAmount());
54 private String profile;
57 private String description;
58 private String comment;
59 private ArrayList<LedgerTransactionAccount> accounts;
60 private String dataHash;
61 private boolean dataLoaded;
62 public LedgerTransaction(Integer id, String dateString, String description)
63 throws ParseException {
64 this(id, Globals.parseLedgerDate(dateString), description);
66 public LedgerTransaction(Integer id, Date date, String description,
67 MobileLedgerProfile profile) {
68 this.profile = profile.getUuid();
71 this.description = description;
72 this.accounts = new ArrayList<>();
76 public LedgerTransaction(Integer id, Date date, String description) {
77 this(id, date, description, Data.profile.getValue());
79 public LedgerTransaction(Date date, String description) {
80 this(null, date, description);
82 public LedgerTransaction(int id) {
83 this(id, (Date) null, null);
85 public LedgerTransaction(int id, String profileUUID) {
86 this.profile = profileUUID;
89 this.description = null;
90 this.accounts = new ArrayList<>();
92 this.dataLoaded = false;
94 public ArrayList<LedgerTransactionAccount> getAccounts() {
97 public void addAccount(LedgerTransactionAccount item) {
101 public Date getDate() {
104 public void setDate(Date date) {
108 public String getDescription() {
111 public void setDescription(String description) {
112 this.description = description;
115 public String getComment() {
118 public void setComment(String comment) {
119 this.comment = comment;
124 protected void fillDataHash() {
125 if (dataHash != null)
128 Digest sha = new Digest(DIGEST_TYPE);
129 StringBuilder data = new StringBuilder();
130 data.append(profile);
131 data.append(getId());
133 data.append(getDescription());
135 data.append(getComment());
137 data.append(Globals.formatLedgerDate(getDate()));
139 for (LedgerTransactionAccount item : accounts) {
140 data.append(item.getAccountName());
142 data.append(item.getCurrency());
144 data.append(item.getAmount());
146 data.append(item.getComment());
148 sha.update(data.toString()
149 .getBytes(StandardCharsets.UTF_8));
150 dataHash = sha.digestToHexString();
152 catch (NoSuchAlgorithmException e) {
153 throw new RuntimeException(
154 String.format("Unable to get instance of %s digest", DIGEST_TYPE), e);
157 public boolean existsInDb(SQLiteDatabase db) {
159 try (Cursor c = db.rawQuery("SELECT 1 from transactions where data_hash = ?",
160 new String[]{dataHash}))
162 boolean result = c.moveToFirst();
163 // debug("db", String.format("Transaction %d (%s) %s", id, dataHash,
164 // result ? "already present" : "not present"));
168 public void loadData(SQLiteDatabase db) {
172 try (Cursor cTr = db.rawQuery(
173 "SELECT date, description, comment from transactions WHERE profile=? AND id=?",
174 new String[]{profile, String.valueOf(id)}))
176 if (cTr.moveToFirst()) {
177 String dateString = cTr.getString(0);
179 date = Globals.parseLedgerDate(dateString);
181 catch (ParseException e) {
183 throw new RuntimeException(
184 String.format("Error parsing date '%s' from " + "transaction %d",
187 description = cTr.getString(1);
188 comment = cTr.getString(2);
190 try (Cursor cAcc = db.rawQuery(
191 "SELECT account_name, amount, currency, comment FROM " +
192 "transaction_accounts WHERE profile=? AND transaction_id = ?",
193 new String[]{profile, String.valueOf(id)}))
195 while (cAcc.moveToNext()) {
196 // debug("transactions",
197 // String.format("Loaded %d: %s %1.2f %s", id, cAcc.getString(0),
198 // cAcc.getFloat(1), cAcc.getString(2)));
199 addAccount(new LedgerTransactionAccount(cAcc.getString(0), cAcc.getFloat(1),
200 cAcc.getString(2), cAcc.getString(3)));
209 public String getDataHash() {
212 public void finishLoading() {