WIP: Company DB

app/src/main/java/protect/card_locker/Company.java

@@ -0,0 +1,67 @@
+package protect.card_locker;
+
+import com.google.zxing.BarcodeFormat;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import protect.card_locker.translationRules.AddPrefixTranslationRule;
+import protect.card_locker.translationRules.TranslationRule;
+
+public class Company {
+    private final String name;
+    private final List<BarcodeFormat> barcodeFormats;
+    private final List<TranslationRule> translationRuleList;
+
+    private Company(final Builder builder) {
+        name = builder.name;
+        barcodeFormats = builder.barcodeFormats;
+        translationRuleList = builder.translationRuleList;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public String cardIDToBarcode(String cardID) {
+        String barcode = cardID;
+        for (int i = 0; i < translationRuleList.size(); i++) {
+            barcode = translationRuleList.get(i).apply(barcode);
+        }
+
+        return barcode;
+    }
+
+    public String BarcodeToCardID(String barcode) {
+        String cardID = barcode;
+        for (int i = translationRuleList.size() - 1; i > 0; i--) {
+            cardID = translationRuleList.get(i).undo(cardID);
+        }
+
+        return cardID;
+    }
+
+    static class Builder {
+        private final String name;
+        private final List<BarcodeFormat> barcodeFormats = new ArrayList<>();
+        private final List<TranslationRule> translationRuleList = new ArrayList<>();
+
+        public Builder(String name) {
+            this.name = name;
+        }
+
+        public Builder addBarcodeFormat(final BarcodeFormat barcodeFormat) {
+            barcodeFormats.add(barcodeFormat);
+            return this;
+        }
+
+        public Builder addPrefix(final String prefix) {
+            translationRuleList.add(new AddPrefixTranslationRule(prefix));
+            return this;
+        }
+
+        public Company create() {
+            return new Company(this);
+        }
+    }
+}

app/src/main/java/protect/card_locker/CompanyDBHelper.java

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+package protect.card_locker;
+
+import android.content.ContentValues;
+import android.content.Context;
+import android.database.sqlite.SQLiteDatabase;
+import android.database.sqlite.SQLiteOpenHelper;
+
+import com.google.zxing.BarcodeFormat;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Locale;
+
+public class CompanyDBHelper extends SQLiteOpenHelper
+{
+    public static final String DATABASE_NAME = "CatimaCompanyList.db";
+    public static final int DATABASE_VERSION = 1;
+
+    static class LoyaltyCardProgramDbCountries
+    {
+        public static final String TABLE = "countries";
+        public static final String ID = "_id";
+    }
+
+    static class LoyaltyCardProgramDbIds
+    {
+        public static final String TABLE = "programs";
+        public static final String ID = "_id";
+        public static final String NAME = "name";
+    }
+
+    static class LoyaltyCardProgramDbIdsCountries
+    {
+        public static final String TABLE = "programCountries";
+        public static final String programId = "programId";
+        public static final String countryId = "countryId";
+    }
+
+    public CompanyDBHelper(Context context)
+    {
+        super(context, DATABASE_NAME, null, DATABASE_VERSION);
+    }
+
+    @Override
+    public void onCreate(SQLiteDatabase db)
+    {
+        // drop all tables
+        db.execSQL("drop table if exists " + LoyaltyCardProgramDbCountries.TABLE);
+        db.execSQL("drop table if exists " + LoyaltyCardProgramDbIds.TABLE);
+        db.execSQL("drop table if exists " + LoyaltyCardProgramDbIdsCountries.TABLE);
+
+        // create table for program countries
+        db.execSQL("create table " + CompanyDBHelper.LoyaltyCardProgramDbCountries.TABLE + "(" +
+                CompanyDBHelper.LoyaltyCardProgramDbCountries.ID + " TEXT primary key not null)");
+
+        // create table for programs
+        db.execSQL("create table " + LoyaltyCardProgramDbIds.TABLE + "(" +
+                LoyaltyCardProgramDbIds.ID + " int primary key not null," +
+                LoyaltyCardProgramDbIds.NAME + " TEXT not null)");
+
+        // create associative table for programs in countries
+        db.execSQL("create table " + LoyaltyCardProgramDbIdsCountries.TABLE + "(" +
+                LoyaltyCardProgramDbIdsCountries.programId + " TEXT," +
+                LoyaltyCardProgramDbIdsCountries.countryId + " TEXT," +
+                "primary key (" + LoyaltyCardProgramDbIdsCountries.programId + "," + LoyaltyCardProgramDbIdsCountries.countryId + "))");
+
+        // create all entries
+        addCompany(0, new Company.Builder("Albert Heijn").addBarcodeFormat(BarcodeFormat.EAN_13).create(), createLocaleList(Arrays.asList("NL")));
+        addCompany(1, new Company.Builder("Air Miles").addBarcodeFormat(BarcodeFormat.EAN_13).addPrefix("470").create(), createLocaleList(Arrays.asList("NL")));
+        addCompany(2, new Company.Builder("HEMA").addBarcodeFormat(BarcodeFormat.QR_CODE).create(), createLocaleList(Arrays.asList("NL")));
+    }
+
+    @Override
+    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { }
+
+    private List<Locale> createLocaleList(List<String> locales) {
+        List<Locale> localeList = new ArrayList<>();
+        for (String locale : locales) {
+            localeList.add(new Locale("en", locale));
+        }
+
+        return localeList;
+    }
+
+    private void addCompany(Integer id, Company company, List<Locale> locales) {
+        SQLiteDatabase db = getWritableDatabase();
+
+        // Create programs
+        // TODO: Insert supported barcodes and translations rules
+        ContentValues contentValues = new ContentValues();
+        contentValues.put(LoyaltyCardProgramDbIds.ID, id);
+        contentValues.put(LoyaltyCardProgramDbIds.NAME, company.getName());
+        db.insert(CompanyDBHelper.LoyaltyCardProgramDbIds.TABLE, null, contentValues);
+
+        // Couple to locales
+        ContentValues localeContentValues;
+        ContentValues programLocales;
+        for (Locale locale: locales) {
+            String countryCode = locale.getCountry();
+
+            // Create locale table if it doesn't exist
+            localeContentValues = new ContentValues();
+            localeContentValues.put(LoyaltyCardProgramDbCountries.ID, countryCode);
+
+            db.insertWithOnConflict(LoyaltyCardProgramDbCountries.TABLE, "", localeContentValues, SQLiteDatabase.CONFLICT_IGNORE);
+
+            // Couple to programs
+            programLocales = new ContentValues();
+            programLocales.put(LoyaltyCardProgramDbIdsCountries.countryId, countryCode);
+            programLocales.put(LoyaltyCardProgramDbIdsCountries.programId, id);
+            db.insert(LoyaltyCardProgramDbIdsCountries.TABLE, "", programLocales);
+        }
+    }
+}

app/src/main/java/protect/card_locker/translationRules/AddPrefixTranslationRule.java

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+package protect.card_locker.translationRules;
+
+public class AddPrefixTranslationRule implements TranslationRule {
+    String prefix;
+
+    public AddPrefixTranslationRule(String prefix) {
+        this.prefix = prefix;
+    }
+
+    @Override
+    public String apply(String value) {
+        return this.prefix + value;
+    }
+
+    @Override
+    public String undo(String value) {
+        if (!value.startsWith(this.prefix)) {
+            throw new IllegalArgumentException();
+        }
+
+        return value.substring(this.prefix.length());
+    }
+}

app/src/main/java/protect/card_locker/translationRules/TranslationRule.java

@@ -0,0 +1,7 @@
+package protect.card_locker.translationRules;
+
+public interface TranslationRule {
+    String apply(String value);
+    String undo(String value);
+}
+