]> git.ktnx.net Git - mobile-ledger.git/blobdiff - app/src/main/java/net/ktnx/mobileledger/async/RetrieveAccountsTask.java
separate packages for the different aspects of the application
[mobile-ledger.git] / app / src / main / java / net / ktnx / mobileledger / async / RetrieveAccountsTask.java
diff --git a/app/src/main/java/net/ktnx/mobileledger/async/RetrieveAccountsTask.java b/app/src/main/java/net/ktnx/mobileledger/async/RetrieveAccountsTask.java
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+/*
+ * Copyright © 2018 Damyan Ivanov.
+ * This file is part of Mobile-Ledger.
+ * Mobile-Ledger is free software: you can distribute it and/or modify it
+ * under the term of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your opinion), any later version.
+ *
+ * Mobile-Ledger is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License terms for details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Mobile-Ledger. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package net.ktnx.mobileledger.async;
+
+import android.content.SharedPreferences;
+import android.database.sqlite.SQLiteDatabase;
+import android.util.Log;
+
+import net.ktnx.mobileledger.AccountSummary;
+import net.ktnx.mobileledger.R;
+import net.ktnx.mobileledger.model.LedgerAccount;
+import net.ktnx.mobileledger.utils.MobileLedgerDatabase;
+import net.ktnx.mobileledger.utils.NetworkUtil;
+
+import java.io.BufferedReader;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.lang.ref.WeakReference;
+import java.net.HttpURLConnection;
+import java.net.MalformedURLException;
+import java.net.URLDecoder;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+public class RetrieveAccountsTask extends android.os.AsyncTask<Void, Integer, Void> {
+    int error;
+
+    private SharedPreferences pref;
+    WeakReference<AccountSummary> mContext;
+
+    public RetrieveAccountsTask(WeakReference<AccountSummary> context) {
+        mContext = context;
+        error = 0;
+    }
+
+    public void setPref(SharedPreferences pref) {
+        this.pref = pref;
+    }
+
+    protected Void doInBackground(Void... params) {
+        try {
+            HttpURLConnection http = NetworkUtil.prepare_connection( pref, "add");
+            publishProgress(0);
+            try(MobileLedgerDatabase dbh = new MobileLedgerDatabase(mContext.get())) {
+                try(SQLiteDatabase db = dbh.getWritableDatabase()) {
+                    try (InputStream resp = http.getInputStream()) {
+                        Log.d("update_accounts", String.valueOf(http.getResponseCode()));
+                        if (http.getResponseCode() != 200) {
+                            throw new IOException(
+                                    String.format("HTTP error: %d %s", http.getResponseCode(), http.getResponseMessage()));
+                        }
+                        else {
+                            if (db.inTransaction()) throw new AssertionError();
+
+                            db.beginTransaction();
+
+                            try {
+                                db.execSQL("update account_values set keep=0;");
+                                db.execSQL("update accounts set keep=0;");
+
+                                String line;
+                                String last_account_name = null;
+                                BufferedReader buf =
+                                        new BufferedReader(new InputStreamReader(resp, "UTF-8"));
+                                // %3A is '='
+                                Pattern account_name_re = Pattern.compile("/register\\?q=inacct%3A([a-zA-Z0-9%]+)\"");
+                                Pattern value_re = Pattern.compile(
+                                        "<span class=\"[^\"]*\\bamount\\b[^\"]*\">\\s*([-+]?[\\d.,]+)(?:\\s+(\\S+))?</span>");
+                                Pattern tr_re = Pattern.compile("</tr>");
+                                Pattern descriptions_line_re = Pattern.compile("\\bdescriptionsSuggester\\s*=\\s*new\\b");
+                                Pattern description_items_re = Pattern.compile("\"value\":\"([^\"]+)\"");
+                                int count = 0;
+                                while ((line = buf.readLine()) != null) {
+                                    Matcher m = account_name_re.matcher(line);
+                                    if (m.find()) {
+                                        String acct_encoded = m.group(1);
+                                        String acct_name = URLDecoder.decode(acct_encoded, "UTF-8");
+                                        acct_name = acct_name.replace("\"", "");
+                                        Log.d("account-parser", acct_name);
+
+                                        addAccount(db, acct_name);
+                                        publishProgress(++count);
+
+                                        last_account_name = acct_name;
+
+                                        continue;
+                                    }
+
+                                    Matcher tr_m = tr_re.matcher(line);
+                                    if (tr_m.find()) {
+                                        Log.d("account-parser", "<tr> - another account expected");
+                                        last_account_name = null;
+                                        continue;
+                                    }
+
+                                    if (last_account_name != null) {
+                                        m = value_re.matcher(line);
+                                        boolean match_found = false;
+                                        while (m.find()) {
+                                            match_found = true;
+                                            String value = m.group(1);
+                                            String currency = m.group(2);
+                                            if (currency == null) currency = "";
+                                            value = value.replace(',', '.');
+                                            Log.d("db", "curr=" + currency + ", value=" + value);
+                                            db.execSQL(
+                                                    "insert or replace into account_values(account, currency, value, keep) values(?, ?, ?, 1);",
+                                                    new Object[]{last_account_name, currency, Float.valueOf(value)
+                                                    });
+                                        }
+
+                                        if (match_found) continue;
+                                    }
+
+                                    m = descriptions_line_re.matcher(line);
+                                    if (m.find()) {
+                                        db.execSQL("update description_history set keep=0;");
+                                        m = description_items_re.matcher(line);
+                                        while (m.find()) {
+                                            String description = m.group(1);
+                                            if (description.isEmpty()) continue;
+
+                                            Log.d("db", String.format("Stored description: %s",
+                                                    description));
+                                            db.execSQL("insert or replace into description_history"
+                                                            + "(description, description_upper, keep) " + "values(?, ?, 1);",
+                                                    new Object[]{description, description.toUpperCase()
+                                                    });
+                                        }
+                                    }
+                                }
+
+                                db.execSQL("delete from account_values where keep=0;");
+                                db.execSQL("delete from accounts where keep=0;");
+//                        db.execSQL("delete from description_history where keep=0;");
+                                db.setTransactionSuccessful();
+                            }
+                            finally {
+                                db.endTransaction();
+                            }
+
+                        }
+                    }
+                }
+            }
+        } catch (MalformedURLException e) {
+            error = R.string.err_bad_backend_url;
+            e.printStackTrace();
+        }
+        catch (FileNotFoundException e) {
+            error = R.string.err_bad_auth;
+            e.printStackTrace();
+        }
+        catch (IOException e) {
+            error = R.string.err_net_io_error;
+            e.printStackTrace();
+        }
+        catch (Exception e) {
+            error = R.string.err_net_error;
+            e.printStackTrace();
+        }
+
+        return null;
+    }
+
+    private void addAccount(SQLiteDatabase db, String name) {
+        do {
+            LedgerAccount acc = new LedgerAccount(name);
+            db.execSQL(
+                    "update accounts set level = ?, keep = 1 where name = ?",
+                    new Object[]{acc.getLevel(), name});
+            db.execSQL("insert into accounts(name, name_upper, parent_name, level) select ?,?,"
+                            + "?,? " + "where (select changes() = 0)",
+                    new Object[]{name, name.toUpperCase(), acc.getParentName(), acc.getLevel()});
+            name = acc.getParentName();
+        } while (name != null);
+    }
+    @Override
+    protected void onPostExecute(Void result) {
+        AccountSummary ctx = mContext.get();
+        if (ctx == null) return;
+        ctx.onAccountRefreshDone(this.error);
+    }
+
+}