CoffeeAppBHIF16/app/src/main/java/at/ac/perg/htl/bhif16/coffeeapp/UserDB.java

package at.ac.perg.htl.bhif16.coffeeapp;

import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.util.Log;

import static android.content.Context.MODE_PRIVATE;

public class UserDB extends SQLiteOpenHelper {

    private static final String DATABASE_NAME = "USERS.db";
    private static final int DATABASE_VERSION = 1;
    private static final String TABLE_STUDENTS = "STUDENTS";

    private static final String COLUMN_STUDENT_ID = "Student_Id";
    private static final String COLUMN_STUDENT_NAME = "Student_Name";
    private static final String COLUMN_STUDENT_COUNT_DRINKS = "Student_Count";

    public UserDB(Context context){
        super(context, DATABASE_NAME,null,DATABASE_VERSION);
    }

    //create Table
    @Override
    public void onCreate(SQLiteDatabase db) {
       Log.i("SQLite","GOOO...");
       String query = "CREATE TABLE " + TABLE_STUDENTS + "("
               + COLUMN_STUDENT_ID + " INTEGER PRIMARY KEY," + COLUMN_STUDENT_NAME + " TEXT,"
               + COLUMN_STUDENT_COUNT_DRINKS + " INTEGER" + ")";
       db.execSQL(query);
    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        Log.i("SQLite", "MyDatabaseHelper.onUpgrade ... ");
        // Drop older table if existed
        db.execSQL("DROP TABLE IF EXISTS " + TABLE_STUDENTS);

        // Create tables again
        onCreate(db);
    }

    public void createDefaultNotesIfNeed()  {
        int count = this.getNotesCount();
        if(count ==0 ) {
            Student s1 = new Student(0,"Achleitner",0,0);
            Student s2 = new Student(1,"Aichinger",2,0);

            this.addNote(s1);
            this.addNote(s2);
            this.updateStudent(s1);
        }

    }

    public int getNotesCount() {
        Log.i("SQLite", "MyDatabaseHelper.getNotesCount ... " );

        String countQuery = "SELECT  * FROM " + TABLE_STUDENTS;
        SQLiteDatabase db = this.getReadableDatabase();
        Cursor cursor = db.rawQuery(countQuery, null);

        int count = cursor.getCount();

        cursor.close();

        // return count
        return count;
    }

    public Student getNote(int id) {
        Log.i("SQLite", "MyDatabaseHelper.getNote ... " + id);

        SQLiteDatabase db = this.getReadableDatabase();

        Cursor cursor = db.query(TABLE_STUDENTS, new String[] { COLUMN_STUDENT_ID,
                        COLUMN_STUDENT_NAME, COLUMN_STUDENT_COUNT_DRINKS }, COLUMN_STUDENT_ID + "=?",
                new String[] { String.valueOf(id) }, null, null, null, null);
        if (cursor != null)
            cursor.moveToFirst();

        Student note = new Student(Integer.parseInt(cursor.getString(0)),cursor.getString(1),Integer.parseInt(cursor.getString(2)),Integer.parseInt(cursor.getString(3)));

        // return note
        return note;
    }

    public void addNote(Student note) {
        Log.i("SQLite", "MyDatabaseHelper.addNote ... " + note.getName());

        SQLiteDatabase db = this.getWritableDatabase();

        ContentValues values = new ContentValues();
        values.put(COLUMN_STUDENT_ID, note.getStudentId());
        values.put(COLUMN_STUDENT_NAME, note.getName());
        values.put(COLUMN_STUDENT_COUNT_DRINKS, note.getConsumedDrinks());

        // Inserting Row
        db.insert(TABLE_STUDENTS, null, values);

        // Closing database connection
        db.close();
    }

    public void updateStudent(Student note) {
        Log.i("SQLite", "MyDatabaseHelper.update ... " + note.getName());

        SQLiteDatabase db = this.getWritableDatabase();

        ContentValues values = new ContentValues();
        values.put(COLUMN_STUDENT_ID, note.getStudentId());
        values.put(COLUMN_STUDENT_NAME, note.getName());
        values.put(COLUMN_STUDENT_COUNT_DRINKS, note.getConsumedDrinks());

        // Inserting Row
        db.update(TABLE_STUDENTS,values,"Student_Id="+note.getStudentId(),null);
        Log.i("SQLite", "ANAL ... ");

        // Closing database connection
        db.close();
    }






}