Merge pull request colegarien#6 from nelalison/Nelson_SDD_database

db create and get user

app/src/main/java/edu/uco/schambers/classmate/Database/DataRepo.java

@@ -0,0 +1,111 @@
+package edu.uco.schambers.classmate.Database;
+
+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 java.util.ArrayList;
+import java.util.List;
+
+
+public class DataRepo extends SQLiteOpenHelper {
+	private static final int DATABASE_VERSION = 4;
+	private static final String DATABASE_NAME = "CLASSMATE_TABLES";
+	private static final String CREATE_TABLE_USER = "create table users " +
+			"(id integer primary key, username " +
+			"text, password text, fname text,lname text , " +
+			"isstudent integer, isstaff integer, phone text, " +
+			"email text, ismale integer)";
+
+	private static final String Role = "create table dbRoles " +
+			"user_id int not null, " +
+			"group text, " +
+			"primary key(user_id, group),"+
+			"CONSTRAINT user_fkey Foreign key(user_id) references users(id) ON DELETE CASCADE ON UPDATE RESTRICT"+
+			")";
+
+	public DataRepo(Context context) {
+		super(context, DATABASE_NAME, null, DATABASE_VERSION);
+	}
+
+	@Override
+	public void onCreate(SQLiteDatabase db) {
+		db.execSQL(CREATE_TABLE_USER);
+		db.execSQL(Role);
+	}
+
+	@Override
+	public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
+		Log.d("DEBUG", "Database version has changed to version: " + DATABASE_VERSION);
+		db.execSQL("DROP TABLE IF EXISTS users");
+		db.execSQL("DROP TABLE IF EXISTS dbRoles");
+		onCreate(db);
+	}
+
+
+	public void createUser(User user) {
+		SQLiteDatabase db = this.getWritableDatabase();
+	      ContentValues contentValues = new ContentValues();
+
+	      contentValues.put("username", user.getUsername());
+	      contentValues.put("password", user.getPassword());
+	      contentValues.put("fname", user.getFname());
+	      contentValues.put("lname", user.getLname());
+	      contentValues.put("isstudent", user.isStudent() ? 1 : 0);
+	      contentValues.put("isstaff", user.isStaff() ? 1 : 0);
+	      contentValues.put("language", user.getPhone());
+		contentValues.put("race", user.getEmail());
+	      contentValues.put("ismale", user.isMale() ? 1 : 0);
+
+	      db.insert("users", null, contentValues);
+	}
+
+	public User getUser(String username) {
+		SQLiteDatabase db = this.getReadableDatabase();
+	      Cursor res =  db.rawQuery( "select * from users where username = '" + username + "'", null);
+
+	      if (res.moveToNext())
+	      {
+	    	  User user = new User();
+
+	    	  user.setId(res.getInt(0));
+	    	  user.setUsername(res.getString(1));
+	    	  user.setPassword(res.getString(2));
+	    	  user.setFname(res.getString(3));
+	    	  user.setLname(res.getString(4));
+	    	  user.setIsStudent(res.getInt(5) == 1);
+	    	  user.setIsStaff(res.getInt(6) == 1);
+	    	  user.setPhone(res.getString(7));
+	    	  user.setEmail(res.getString(8));
+	    	  user.setIsMale(res.getInt(9) == 1);
+
+	    	  return user;
+	      }
+
+	      return null;
+	}
+
+	public boolean validateUser(String username, String password) {
+		SQLiteDatabase db = this.getReadableDatabase();
+	      Cursor res =  db.rawQuery( "select * from users where username = '" + username + "' and password = '" + password + "'", null);
+
+	      if (res.getCount() > 0)
+	    	  return true;
+
+	      return false;
+	}
+
+	public boolean validateUser(String password) {
+		SQLiteDatabase db = this.getReadableDatabase();
+	      Cursor res =  db.rawQuery( "select * from users where password = '" + password + "'", null);
+
+	      if (res.getCount() > 0)
+	    	  return true;
+
+	      return false;
+	}
+
+}

app/src/main/java/edu/uco/schambers/classmate/Database/SHA256Encrypt.java

@@ -0,0 +1,26 @@
+package edu.uco.schambers.classmate.Database;
+
+
+
+
+
+import java.io.UnsupportedEncodingException;
+import java.math.BigInteger;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+
+public class SHA256Encrypt {
+
+    public static String encrypt(String data) {
+        try {
+            MessageDigest md = MessageDigest.getInstance("SHA-256");
+            md.update(data.getBytes("UTF-8")); // Change this to "UTF-16" if needed
+            byte[] digest = md.digest();
+            BigInteger bigInt = new BigInteger(1, digest);
+            return bigInt.toString(16);
+        } catch (NoSuchAlgorithmException | UnsupportedEncodingException e) {
+            return null;
+        }
+    }
+
+}

app/src/main/java/edu/uco/schambers/classmate/Database/User.java

@@ -0,0 +1,98 @@
+package edu.uco.schambers.classmate.Database;
+
+import java.io.Serializable;
+
+
+public class User implements Serializable {
+	public int id;
+	public String username;
+	public String password;
+	public String fname;
+	public String lname;
+	public boolean Student;
+	public boolean Staff;
+	public String phone;
+	public String email;
+	public boolean Male;
+
+	public int getId() {
+		return id;
+	}
+
+	public void setId(int id) {
+		this.id = id;
+	}
+
+	public String getUsername() {
+		return username;
+	}
+
+	public void setUsername(String username) {
+		this.username = username;
+	}
+
+	public String getPassword() {
+		return password;
+	}
+
+	public void setPassword(String password) {
+		this.password = SHA256Encrypt.encrypt(password);
+	}
+
+	public String getFname() {
+		return fname;
+	}
+
+	public void setFname(String fname) {
+		this.fname = fname;
+	}
+
+	public String getLname() {
+		return lname;
+	}
+
+	public void setLname(String lname) {
+		this.lname = lname;
+	}
+
+	public boolean isStudent() {
+		return Student;
+	}
+
+	public void setIsStudent(boolean Student) {
+		this.Student = Student;
+	}
+
+	public boolean isStaff() {
+		return Staff;
+	}
+
+	public void setIsStaff(boolean Staff) {
+		this.Staff = Staff;
+	}
+
+	public String getPhone() {
+		return phone;
+	}
+
+	public void setPhone(String phone) {
+		this.phone = phone;
+	}
+
+	public String getEmail() {
+		return email;
+	}
+
+	public void setEmail(String email) {
+		this.email = email;
+	}
+
+	public boolean isMale() {
+		return Male;
+	}
+
+	public void setIsMale(boolean Male) {
+		this.Male = Male;
+	}
+
+}