2 * Copyright © 2021 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.async;
20 import android.annotation.SuppressLint;
21 import android.database.sqlite.SQLiteDatabase;
22 import android.os.AsyncTask;
23 import android.os.OperationCanceledException;
25 import androidx.annotation.NonNull;
26 import androidx.room.Transaction;
28 import com.fasterxml.jackson.core.JsonParseException;
29 import com.fasterxml.jackson.databind.RuntimeJsonMappingException;
31 import net.ktnx.mobileledger.App;
32 import net.ktnx.mobileledger.dao.AccountDAO;
33 import net.ktnx.mobileledger.dao.AccountValueDAO;
34 import net.ktnx.mobileledger.dao.TransactionAccountDAO;
35 import net.ktnx.mobileledger.dao.TransactionDAO;
36 import net.ktnx.mobileledger.db.Account;
37 import net.ktnx.mobileledger.db.AccountWithAmounts;
38 import net.ktnx.mobileledger.db.DB;
39 import net.ktnx.mobileledger.db.Option;
40 import net.ktnx.mobileledger.db.Profile;
41 import net.ktnx.mobileledger.db.TransactionAccount;
42 import net.ktnx.mobileledger.db.TransactionWithAccounts;
43 import net.ktnx.mobileledger.err.HTTPException;
44 import net.ktnx.mobileledger.json.API;
45 import net.ktnx.mobileledger.json.AccountListParser;
46 import net.ktnx.mobileledger.json.ApiNotSupportedException;
47 import net.ktnx.mobileledger.json.TransactionListParser;
48 import net.ktnx.mobileledger.model.Data;
49 import net.ktnx.mobileledger.model.LedgerAccount;
50 import net.ktnx.mobileledger.model.LedgerTransaction;
51 import net.ktnx.mobileledger.model.LedgerTransactionAccount;
52 import net.ktnx.mobileledger.ui.MainModel;
53 import net.ktnx.mobileledger.utils.Logger;
54 import net.ktnx.mobileledger.utils.NetworkUtil;
56 import java.io.BufferedReader;
57 import java.io.IOException;
58 import java.io.InputStream;
59 import java.io.InputStreamReader;
60 import java.net.HttpURLConnection;
61 import java.net.MalformedURLException;
62 import java.net.URLDecoder;
63 import java.nio.charset.StandardCharsets;
64 import java.text.ParseException;
65 import java.util.ArrayList;
66 import java.util.Collections;
67 import java.util.Date;
68 import java.util.HashMap;
69 import java.util.List;
70 import java.util.Locale;
71 import java.util.Objects;
72 import java.util.regex.Matcher;
73 import java.util.regex.Pattern;
76 public class RetrieveTransactionsTask extends
77 AsyncTask<Void, RetrieveTransactionsTask.Progress, RetrieveTransactionsTask.Result> {
78 private static final int MATCHING_TRANSACTIONS_LIMIT = 150;
79 private static final Pattern reComment = Pattern.compile("^\\s*;");
80 private static final Pattern reTransactionStart = Pattern.compile(
81 "<tr class=\"title\" " + "id=\"transaction-(\\d+)" + "\"><td class=\"date" +
82 "\"[^\"]*>([\\d.-]+)</td>");
83 private static final Pattern reTransactionDescription =
84 Pattern.compile("<tr class=\"posting\" title=\"(\\S+)\\s(.+)");
85 private static final Pattern reTransactionDetails = Pattern.compile(
86 "^\\s+" + "([!*]\\s+)?" + "(\\S[\\S\\s]+\\S)\\s\\s+" + "(?:([^\\d\\s+\\-]+)\\s*)?" +
87 "([-+]?\\d[\\d,.]*)" + "(?:\\s*([^\\d\\s+\\-]+)\\s*$)?");
88 private static final Pattern reEnd = Pattern.compile("\\bid=\"addmodal\"");
89 private static final Pattern reDecimalPoint = Pattern.compile("\\.\\d\\d?$");
90 private static final Pattern reDecimalComma = Pattern.compile(",\\d\\d?$");
92 private final Pattern reAccountName =
93 Pattern.compile("/register\\?q=inacct%3A([a-zA-Z0-9%]+)\"");
94 private final Pattern reAccountValue = Pattern.compile(
95 "<span class=\"[^\"]*\\bamount\\b[^\"]*\">\\s*([-+]?[\\d.,]+)(?:\\s+(\\S+))?</span>");
96 private final MainModel mainModel;
97 private final Profile profile;
98 private int expectedPostingsCount = -1;
99 public RetrieveTransactionsTask(@NonNull MainModel mainModel, @NonNull Profile profile) {
100 this.mainModel = mainModel;
101 this.profile = profile;
103 private static void L(String msg) {
104 //debug("transaction-parser", msg);
106 static LedgerTransactionAccount parseTransactionAccountLine(String line) {
107 Matcher m = reTransactionDetails.matcher(line);
109 String postingStatus = m.group(1);
110 String acc_name = m.group(2);
111 String currencyPre = m.group(3);
112 String amount = Objects.requireNonNull(m.group(4));
113 String currencyPost = m.group(5);
115 String currency = null;
116 if ((currencyPre != null) && (currencyPre.length() > 0)) {
117 if ((currencyPost != null) && (currencyPost.length() > 0))
119 currency = currencyPre;
121 else if ((currencyPost != null) && (currencyPost.length() > 0)) {
122 currency = currencyPost;
125 amount = amount.replace(',', '.');
127 return new LedgerTransactionAccount(acc_name, Float.parseFloat(amount), currency, null);
134 protected void onProgressUpdate(Progress... values) {
135 super.onProgressUpdate(values);
136 Data.backgroundTaskProgress.postValue(values[0]);
139 protected void onPostExecute(Result result) {
140 super.onPostExecute(result);
141 Progress progress = new Progress();
142 progress.setState(ProgressState.FINISHED);
143 progress.setError(result.error);
144 onProgressUpdate(progress);
147 protected void onCancelled() {
149 Progress progress = new Progress();
150 progress.setState(ProgressState.FINISHED);
151 onProgressUpdate(progress);
153 private void retrieveTransactionListLegacy(List<LedgerAccount> accounts,
154 List<LedgerTransaction> transactions)
155 throws IOException, HTTPException {
156 Progress progress = Progress.indeterminate();
157 progress.setState(ProgressState.RUNNING);
158 progress.setTotal(expectedPostingsCount);
159 int maxTransactionId = -1;
160 HashMap<String, LedgerAccount> map = new HashMap<>();
161 LedgerAccount lastAccount = null;
162 ArrayList<LedgerAccount> syntheticAccounts = new ArrayList<>();
164 HttpURLConnection http = NetworkUtil.prepareConnection(profile, "journal");
165 http.setAllowUserInteraction(false);
166 publishProgress(progress);
167 if (http.getResponseCode() != 200)
168 throw new HTTPException(http.getResponseCode(), http.getResponseMessage());
170 try (InputStream resp = http.getInputStream()) {
171 if (http.getResponseCode() != 200)
172 throw new IOException(String.format("HTTP error %d", http.getResponseCode()));
174 int matchedTransactionsCount = 0;
176 ParserState state = ParserState.EXPECTING_ACCOUNT;
179 new BufferedReader(new InputStreamReader(resp, StandardCharsets.UTF_8));
181 int processedTransactionCount = 0;
182 int transactionId = 0;
183 LedgerTransaction transaction = null;
185 while ((line = buf.readLine()) != null) {
188 m = reComment.matcher(line);
190 // TODO: comments are ignored for now
191 // Log.v("transaction-parser", "Ignoring comment");
194 //L(String.format("State is %d", updating));
196 case EXPECTING_ACCOUNT:
197 if (line.equals("<h2>General Journal</h2>")) {
198 state = ParserState.EXPECTING_TRANSACTION;
199 L("→ expecting transaction");
202 m = reAccountName.matcher(line);
204 String acct_encoded = m.group(1);
205 String accName = URLDecoder.decode(acct_encoded, "UTF-8");
206 accName = accName.replace("\"", "");
207 L(String.format("found account: %s", accName));
209 lastAccount = map.get(accName);
210 if (lastAccount != null) {
211 L(String.format("ignoring duplicate account '%s'", accName));
214 String parentAccountName = LedgerAccount.extractParentName(accName);
215 LedgerAccount parentAccount;
216 if (parentAccountName != null) {
217 parentAccount = ensureAccountExists(parentAccountName, map,
221 parentAccount = null;
223 lastAccount = new LedgerAccount(accName, parentAccount);
225 accounts.add(lastAccount);
226 map.put(accName, lastAccount);
228 state = ParserState.EXPECTING_ACCOUNT_AMOUNT;
229 L("→ expecting account amount");
233 case EXPECTING_ACCOUNT_AMOUNT:
234 m = reAccountValue.matcher(line);
235 boolean match_found = false;
240 String value = Objects.requireNonNull(m.group(1));
241 String currency = m.group(2);
242 if (currency == null)
246 Matcher tmpM = reDecimalComma.matcher(value);
248 value = value.replace(".", "");
249 value = value.replace(',', '.');
252 tmpM = reDecimalPoint.matcher(value);
254 value = value.replace(",", "");
255 value = value.replace(" ", "");
258 L("curr=" + currency + ", value=" + value);
259 final float val = Float.parseFloat(value);
260 lastAccount.addAmount(val, currency);
261 for (LedgerAccount syn : syntheticAccounts) {
262 L(String.format(Locale.ENGLISH, "propagating %s %1.2f to %s",
263 currency, val, syn.getName()));
264 syn.addAmount(val, currency);
269 syntheticAccounts.clear();
270 state = ParserState.EXPECTING_ACCOUNT;
271 L("→ expecting account");
276 case EXPECTING_TRANSACTION:
277 if (!line.isEmpty() && (line.charAt(0) == ' '))
279 m = reTransactionStart.matcher(line);
281 transactionId = Integer.parseInt(Objects.requireNonNull(m.group(1)));
282 state = ParserState.EXPECTING_TRANSACTION_DESCRIPTION;
283 L(String.format(Locale.ENGLISH,
284 "found transaction %d → expecting description", transactionId));
285 progress.setProgress(++processedTransactionCount);
286 if (maxTransactionId < transactionId)
287 maxTransactionId = transactionId;
288 if ((progress.isIndeterminate()) ||
289 (progress.getTotal() < transactionId))
290 progress.setTotal(transactionId);
291 publishProgress(progress);
293 m = reEnd.matcher(line);
295 L("--- transaction value complete ---");
300 case EXPECTING_TRANSACTION_DESCRIPTION:
301 if (!line.isEmpty() && (line.charAt(0) == ' '))
303 m = reTransactionDescription.matcher(line);
305 if (transactionId == 0)
306 throw new TransactionParserException(
307 "Transaction Id is 0 while expecting description");
309 String date = Objects.requireNonNull(m.group(1));
311 int equalsIndex = date.indexOf('=');
312 if (equalsIndex >= 0)
313 date = date.substring(equalsIndex + 1);
315 new LedgerTransaction(transactionId, date, m.group(2));
317 catch (ParseException e) {
318 throw new TransactionParserException(
319 String.format("Error parsing date '%s'", date));
321 state = ParserState.EXPECTING_TRANSACTION_DETAILS;
322 L(String.format(Locale.ENGLISH,
323 "transaction %d created for %s (%s) →" + " expecting details",
324 transactionId, date, m.group(2)));
328 case EXPECTING_TRANSACTION_DETAILS:
329 if (line.isEmpty()) {
330 // transaction data collected
332 transaction.finishLoading();
333 transactions.add(transaction);
335 state = ParserState.EXPECTING_TRANSACTION;
336 L(String.format("transaction %s parsed → expecting transaction",
337 transaction.getLedgerId()));
339 // sounds like a good idea, but transaction-1 may not be the first one chronologically
340 // for example, when you add the initial seeding transaction after entering some others
341 // if (transactionId == 1) {
342 // L("This was the initial transaction.
349 LedgerTransactionAccount lta = parseTransactionAccountLine(line);
351 transaction.addAccount(lta);
352 L(String.format(Locale.ENGLISH, "%d: %s = %s",
353 transaction.getLedgerId(), lta.getAccountName(),
357 throw new IllegalStateException(
358 String.format("Can't parse transaction %d details: %s",
359 transactionId, line));
363 throw new RuntimeException(
364 String.format("Unknown parser updating %s", state.name()));
372 public LedgerAccount ensureAccountExists(String accountName, HashMap<String, LedgerAccount> map,
373 ArrayList<LedgerAccount> createdAccounts) {
374 LedgerAccount acc = map.get(accountName);
379 String parentName = LedgerAccount.extractParentName(accountName);
380 LedgerAccount parentAccount;
381 if (parentName != null) {
382 parentAccount = ensureAccountExists(parentName, map, createdAccounts);
385 parentAccount = null;
388 acc = new LedgerAccount(accountName, parentAccount);
389 createdAccounts.add(acc);
392 public void addNumberOfPostings(int number) {
393 expectedPostingsCount += number;
395 private List<LedgerAccount> retrieveAccountList()
396 throws IOException, HTTPException, ApiNotSupportedException {
397 final API apiVersion = API.valueOf(profile.getApiVersion());
398 if (apiVersion.equals(API.auto)) {
399 return retrieveAccountListAnyVersion();
401 else if (apiVersion.equals(API.html)) {
403 "Declining using JSON API for /accounts with configured legacy API version");
407 return retrieveAccountListForVersion(apiVersion);
410 private List<LedgerAccount> retrieveAccountListAnyVersion()
411 throws ApiNotSupportedException, IOException, HTTPException {
412 for (API ver : API.allVersions) {
414 return retrieveAccountListForVersion(ver);
416 catch (JsonParseException | RuntimeJsonMappingException e) {
418 String.format(Locale.US, "Error during account list retrieval using API %s",
419 ver.getDescription()), e);
424 throw new ApiNotSupportedException();
426 private List<LedgerAccount> retrieveAccountListForVersion(API version)
427 throws IOException, HTTPException {
428 HttpURLConnection http = NetworkUtil.prepareConnection(profile, "accounts");
429 http.setAllowUserInteraction(false);
430 switch (http.getResponseCode()) {
436 throw new HTTPException(http.getResponseCode(), http.getResponseMessage());
438 publishProgress(Progress.indeterminate());
439 SQLiteDatabase db = App.getDatabase();
440 ArrayList<LedgerAccount> list = new ArrayList<>();
441 HashMap<String, LedgerAccount> map = new HashMap<>();
443 try (InputStream resp = http.getInputStream()) {
445 if (http.getResponseCode() != 200)
446 throw new IOException(String.format("HTTP error %d", http.getResponseCode()));
448 AccountListParser parser = AccountListParser.forApiVersion(version, resp);
449 expectedPostingsCount = 0;
453 LedgerAccount acc = parser.nextAccount(this, map);
463 private List<LedgerTransaction> retrieveTransactionList()
464 throws ParseException, HTTPException, IOException, ApiNotSupportedException {
465 final API apiVersion = API.valueOf(profile.getApiVersion());
466 if (apiVersion.equals(API.auto)) {
467 return retrieveTransactionListAnyVersion();
469 else if (apiVersion.equals(API.html)) {
471 "Declining using JSON API for /accounts with configured legacy API version");
475 return retrieveTransactionListForVersion(apiVersion);
479 private List<LedgerTransaction> retrieveTransactionListAnyVersion()
480 throws ApiNotSupportedException {
481 for (API ver : API.allVersions) {
483 return retrieveTransactionListForVersion(ver);
485 catch (Exception e) {
487 String.format(Locale.US, "Error during account list retrieval using API %s",
488 ver.getDescription()));
493 throw new ApiNotSupportedException();
495 private List<LedgerTransaction> retrieveTransactionListForVersion(API apiVersion)
496 throws IOException, ParseException, HTTPException {
497 Progress progress = new Progress();
498 progress.setTotal(expectedPostingsCount);
500 HttpURLConnection http = NetworkUtil.prepareConnection(profile, "transactions");
501 http.setAllowUserInteraction(false);
502 publishProgress(progress);
503 switch (http.getResponseCode()) {
509 throw new HTTPException(http.getResponseCode(), http.getResponseMessage());
511 ArrayList<LedgerTransaction> trList = new ArrayList<>();
512 try (InputStream resp = http.getInputStream()) {
515 TransactionListParser parser = TransactionListParser.forApiVersion(apiVersion, resp);
517 int processedPostings = 0;
521 LedgerTransaction transaction = parser.nextTransaction();
523 if (transaction == null)
526 trList.add(transaction);
528 progress.setProgress(processedPostings += transaction.getAccounts()
530 // Logger.debug("trParser",
531 // String.format(Locale.US, "Parsed transaction %d - %s", transaction
533 // transaction.getDescription()));
534 // for (LedgerTransactionAccount acc : transaction.getAccounts()) {
535 // Logger.debug("trParser",
536 // String.format(Locale.US, " %s", acc.getAccountName()));
538 publishProgress(progress);
544 // json interface returns transactions if file order and the rest of the machinery
545 // expects them in reverse chronological order
546 Collections.sort(trList, (o1, o2) -> {
547 int res = o2.getDate()
548 .compareTo(o1.getDate());
551 return Long.compare(o2.getLedgerId(), o1.getLedgerId());
556 @SuppressLint("DefaultLocale")
558 protected Result doInBackground(Void... params) {
559 Data.backgroundTaskStarted();
560 List<LedgerAccount> accounts;
561 List<LedgerTransaction> transactions;
563 accounts = retrieveAccountList();
564 // accounts is null in API-version auto-detection and means
565 // requesting 'html' API version via the JSON classes
566 // this can't work, and the null results in the legacy code below
568 if (accounts == null)
571 transactions = retrieveTransactionList();
573 if (accounts == null || transactions == null) {
574 accounts = new ArrayList<>();
575 transactions = new ArrayList<>();
576 retrieveTransactionListLegacy(accounts, transactions);
579 storeAccountsAndTransactions(accounts, transactions);
581 mainModel.updateDisplayedTransactionsFromWeb(transactions);
583 return new Result(accounts, transactions);
585 catch (MalformedURLException e) {
587 return new Result("Invalid server URL");
589 catch (HTTPException e) {
592 String.format("HTTP error %d: %s", e.getResponseCode(), e.getMessage()));
594 catch (IOException e) {
596 return new Result(e.getLocalizedMessage());
598 catch (RuntimeJsonMappingException e) {
600 return new Result(Result.ERR_JSON_PARSER_ERROR);
602 catch (ParseException e) {
604 return new Result("Network error");
606 catch (OperationCanceledException e) {
608 return new Result("Operation cancelled");
610 catch (ApiNotSupportedException e) {
612 return new Result("Server version not supported");
615 Data.backgroundTaskFinished();
619 private void storeAccountsAndTransactions(List<LedgerAccount> accounts,
620 List<LedgerTransaction> transactions) {
621 AccountDAO accDao = DB.get()
623 TransactionDAO trDao = DB.get()
624 .getTransactionDAO();
625 TransactionAccountDAO trAccDao = DB.get()
626 .getTransactionAccountDAO();
627 AccountValueDAO valDao = DB.get()
628 .getAccountValueDAO();
630 final List<AccountWithAmounts> list = new ArrayList<>();
631 for (LedgerAccount acc : accounts) {
632 final AccountWithAmounts a = acc.toDBOWithAmounts();
633 Account existing = accDao.getByNameSync(profile.getId(), acc.getName());
634 if (existing != null) {
635 a.account.setExpanded(existing.isExpanded());
636 a.account.setAmountsExpanded(existing.isAmountsExpanded());
638 existing.getId()); // not strictly needed, but since we have it anyway...
643 accDao.storeAccountsSync(list, profile.getId());
645 long trGen = trDao.getGenerationSync(profile.getId());
646 for (LedgerTransaction tr : transactions) {
647 TransactionWithAccounts tran = tr.toDBO();
648 tran.transaction.setGeneration(trGen);
649 tran.transaction.setProfileId(profile.getId());
651 tran.transaction.setId(trDao.insertSync(tran.transaction));
653 for (TransactionAccount trAcc : tran.accounts) {
654 trAcc.setGeneration(trGen);
655 trAcc.setTransactionId(tran.transaction.getId());
656 trAcc.setId(trAccDao.insertSync(trAcc));
660 trDao.purgeOldTransactionsSync(profile.getId(), trGen);
664 .insertSync(new Option(profile.getId(), Option.OPT_LAST_SCRAPE,
665 String.valueOf((new Date()).getTime())));
667 public void throwIfCancelled() {
669 throw new OperationCanceledException(null);
671 private enum ParserState {
672 EXPECTING_ACCOUNT, EXPECTING_ACCOUNT_AMOUNT, EXPECTING_TRANSACTION,
673 EXPECTING_TRANSACTION_DESCRIPTION, EXPECTING_TRANSACTION_DETAILS
676 public enum ProgressState {STARTING, RUNNING, FINISHED}
678 public static class Progress {
679 private int progress;
681 private ProgressState state = ProgressState.RUNNING;
682 private String error = null;
683 private boolean indeterminate;
685 indeterminate = true;
687 Progress(int progress, int total) {
688 this.indeterminate = false;
689 this.progress = progress;
692 public static Progress indeterminate() {
693 return new Progress();
695 public static Progress finished(String error) {
696 Progress p = new Progress();
697 p.setState(ProgressState.FINISHED);
701 public int getProgress() {
702 ensureState(ProgressState.RUNNING);
705 protected void setProgress(int progress) {
706 this.progress = progress;
707 this.state = ProgressState.RUNNING;
709 public int getTotal() {
710 ensureState(ProgressState.RUNNING);
713 protected void setTotal(int total) {
715 state = ProgressState.RUNNING;
716 indeterminate = total == -1;
718 private void ensureState(ProgressState wanted) {
720 throw new IllegalStateException(
721 String.format("Bad state: %s, expected %s", state, wanted));
723 public ProgressState getState() {
726 public void setState(ProgressState state) {
729 public String getError() {
730 ensureState(ProgressState.FINISHED);
733 public void setError(String error) {
735 state = ProgressState.FINISHED;
737 public boolean isIndeterminate() {
738 return indeterminate;
740 public void setIndeterminate(boolean indeterminate) {
741 this.indeterminate = indeterminate;
745 private static class TransactionParserException extends IllegalStateException {
746 TransactionParserException(String message) {
751 public static class Result {
752 public static String ERR_JSON_PARSER_ERROR = "err_json_parser";
754 public List<LedgerAccount> accounts;
755 public List<LedgerTransaction> transactions;
756 Result(String error) {
759 Result(List<LedgerAccount> accounts, List<LedgerTransaction> transactions) {
760 this.accounts = accounts;
761 this.transactions = transactions;