]> git.ktnx.net Git - mobile-ledger.git/blobdiff - app/src/main/java/net/ktnx/mobileledger/model/LedgerTransaction.java
major rework of parsed transaction/descriptions/accounts storage
[mobile-ledger.git] / app / src / main / java / net / ktnx / mobileledger / model / LedgerTransaction.java
index a103ab3951d92c0ef643f81dbaf15f45c52c1a1c..d42e5630d0274f26e3525c510a6435d40f1d023e 100644 (file)
 /*
- * Copyright © 2018 Damyan Ivanov.
- * This file is part of Mobile-Ledger.
- * Mobile-Ledger is free software: you can distribute it and/or modify it
+ * Copyright © 2020 Damyan Ivanov.
+ * This file is part of MoLe.
+ * MoLe 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,
+ * MoLe 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/>.
+ * along with MoLe. If not, see <https://www.gnu.org/licenses/>.
  */
 
 package net.ktnx.mobileledger.model;
 
+import android.database.Cursor;
 import android.database.sqlite.SQLiteDatabase;
 
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+import net.ktnx.mobileledger.App;
+import net.ktnx.mobileledger.utils.Digest;
+import net.ktnx.mobileledger.utils.Globals;
+import net.ktnx.mobileledger.utils.SimpleDate;
+
+import java.nio.charset.StandardCharsets;
+import java.security.NoSuchAlgorithmException;
+import java.text.ParseException;
 import java.util.ArrayList;
-import java.util.Iterator;
+import java.util.Comparator;
 import java.util.List;
 
 public class LedgerTransaction {
-    private String id;
-    private String date;
+    private static final String DIGEST_TYPE = "SHA-256";
+    public final Comparator<LedgerTransactionAccount> comparator = (o1, o2) -> {
+        int res = o1.getAccountName()
+                    .compareTo(o2.getAccountName());
+        if (res != 0)
+            return res;
+        res = o1.getCurrency()
+                .compareTo(o2.getCurrency());
+        if (res != 0)
+            return res;
+        res = o1.getComment()
+                .compareTo(o2.getComment());
+        if (res != 0)
+            return res;
+        return Float.compare(o1.getAmount(), o2.getAmount());
+    };
+    private String profile;
+    private Integer id;
+    private SimpleDate date;
     private String description;
-    private List<LedgerTransactionItem> items;
-
-    public LedgerTransaction(String id, String date, String description) {
+    private String comment;
+    private List<LedgerTransactionAccount> accounts;
+    private String dataHash;
+    private boolean dataLoaded;
+    public LedgerTransaction(Integer id, String dateString, String description)
+            throws ParseException {
+        this(id, Globals.parseLedgerDate(dateString), description);
+    }
+    public LedgerTransaction(Integer id, SimpleDate date, String description,
+                             MobileLedgerProfile profile) {
+        this.profile = profile.getUuid();
         this.id = id;
         this.date = date;
         this.description = description;
-        this.items = new ArrayList<>();
+        this.accounts = new ArrayList<>();
+        this.dataHash = null;
+        dataLoaded = false;
+    }
+    public LedgerTransaction(Integer id, SimpleDate date, String description) {
+        this(id, date, description, Data.getProfile());
     }
-    public LedgerTransaction(String date, String description) {
+    public LedgerTransaction(SimpleDate date, String description) {
         this(null, date, description);
     }
-    public void add_item(LedgerTransactionItem item) {
-        items.add(item);
+    public LedgerTransaction(int id) {
+        this(id, (SimpleDate) null, null);
     }
-
-    public String getDate() {
+    public LedgerTransaction(int id, String profileUUID) {
+        this.profile = profileUUID;
+        this.id = id;
+        this.date = null;
+        this.description = null;
+        this.accounts = new ArrayList<>();
+        this.dataHash = null;
+        this.dataLoaded = false;
+    }
+    public List<LedgerTransactionAccount> getAccounts() {
+        return accounts;
+    }
+    public void addAccount(LedgerTransactionAccount item) {
+        accounts.add(item);
+        dataHash = null;
+    }
+    @Nullable
+    public SimpleDate getDateIfAny() {
         return date;
     }
-
-    public void setDate(String date) {
+    @NonNull
+    public SimpleDate getDate() {
+        if (date == null)
+            throw new IllegalStateException("Transaction has no date");
+        return date;
+    }
+    public void setDate(SimpleDate date) {
         this.date = date;
+        dataHash = null;
     }
-
     public String getDescription() {
         return description;
     }
-
     public void setDescription(String description) {
         this.description = description;
+        dataHash = null;
     }
-
-    public Iterator<LedgerTransactionItem> getItemsIterator() {
-        return new Iterator<LedgerTransactionItem>() {
-            private int pointer = 0;
-            @Override
-            public boolean hasNext() {
-                return pointer < items.size();
+    public String getComment() {
+        return comment;
+    }
+    public void setComment(String comment) {
+        this.comment = comment;
+    }
+    public int getId() {
+        return id;
+    }
+    protected void fillDataHash() {
+        loadData(App.getDatabase());
+        if (dataHash != null)
+            return;
+        try {
+            Digest sha = new Digest(DIGEST_TYPE);
+            StringBuilder data = new StringBuilder();
+            data.append("ver1");
+            data.append(profile);
+            data.append(getId());
+            data.append('\0');
+            data.append(getDescription());
+            data.append('\0');
+            data.append(getComment());
+            data.append('\0');
+            data.append(Globals.formatLedgerDate(getDate()));
+            data.append('\0');
+            for (LedgerTransactionAccount item : accounts) {
+                data.append(item.getAccountName());
+                data.append('\0');
+                data.append(item.getCurrency());
+                data.append('\0');
+                data.append(item.getAmount());
+                data.append('\0');
+                data.append(item.getComment());
             }
+            sha.update(data.toString()
+                           .getBytes(StandardCharsets.UTF_8));
+            dataHash = sha.digestToHexString();
+        }
+        catch (NoSuchAlgorithmException e) {
+            throw new RuntimeException(
+                    String.format("Unable to get instance of %s digest", DIGEST_TYPE), e);
+        }
+    }
+    public synchronized void loadData(SQLiteDatabase db) {
+        if (dataLoaded)
+            return;
+
+        try (Cursor cTr = db.rawQuery(
+                "SELECT year, month, day, description, comment from transactions WHERE profile=? " +
+                "AND id=?", new String[]{profile, String.valueOf(id)}))
+        {
+            if (cTr.moveToFirst()) {
+                date = new SimpleDate(cTr.getInt(0), cTr.getInt(1), cTr.getInt(2));
+                description = cTr.getString(3);
+                comment = cTr.getString(4);
+
+                accounts.clear();
 
-            @Override
-            public LedgerTransactionItem next() {
-                return hasNext() ? items.get(pointer++) : null;
+                try (Cursor cAcc = db.rawQuery(
+                        "SELECT account_name, amount, currency, comment FROM " +
+                        "transaction_accounts WHERE profile=? AND transaction_id = ?",
+                        new String[]{profile, String.valueOf(id)}))
+                {
+                    while (cAcc.moveToNext()) {
+//                        debug("transactions",
+//                                String.format("Loaded %d: %s %1.2f %s", id, cAcc.getString(0),
+//                                        cAcc.getFloat(1), cAcc.getString(2)));
+                        addAccount(new LedgerTransactionAccount(cAcc.getString(0), cAcc.getFloat(1),
+                                cAcc.getString(2), cAcc.getString(3)));
+                    }
+
+                    finishLoading();
+                }
             }
-        };
+        }
+
     }
-    public String getId() {
-        return id;
+    public String getDataHash() {
+        fillDataHash();
+        return dataHash;
     }
+    public void finishLoading() {
+        dataLoaded = true;
+    }
+    @Override
+    public boolean equals(@Nullable Object obj) {
+        if (obj == null)
+            return false;
+        if (!obj.getClass()
+                .equals(this.getClass()))
+            return false;
 
-    public void insertInto(SQLiteDatabase db) {
-        db.execSQL("INSERT INTO transactions(id, date, " + "description) values(?, ?, ?)",
-                new String[]{id, date, description});
+        return ((LedgerTransaction) obj).getDataHash()
+                                        .equals(getDataHash());
+    }
 
-        for(LedgerTransactionItem item : items) {
-            db.execSQL("INSERT INTO transaction_accounts(transaction_id, account_name, amount, "
-                    + "currency) values(?, ?, ?, ?)", new Object[]{id, item.getAccountName(),
-                                                                   item.getAmount(), item.getCurrency()});
+    public boolean hasAccountNamedLike(String name) {
+        name = name.toUpperCase();
+        for (LedgerTransactionAccount acc : accounts) {
+            if (acc.getAccountName()
+                   .toUpperCase()
+                   .contains(name))
+                return true;
         }
+
+        return false;
+    }
+    public void markDataAsLoaded() {
+        dataLoaded = true;
     }
 }