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1package com.ict3103team35.sit.doctotrust.Doctor;
2
3import android.content.Intent;
4import android.content.SharedPreferences;
5import android.support.v7.app.AppCompatActivity;
6import android.os.Bundle;
7import android.util.Base64;
8import android.util.Log;
9import android.view.View;
10import android.widget.Button;
11import android.widget.EditText;
12import android.widget.TextView;
13import android.widget.Toast;
14
15import com.ict3103team35.sit.doctotrust.CryptoClass.CryptoActivity;
16import com.ict3103team35.sit.doctotrust.Models.DefaultCreateResponse;
17import com.ict3103team35.sit.doctotrust.Models.DefaultGetResponse;
18import com.ict3103team35.sit.doctotrust.Models.MedicalHistory;
19import com.ict3103team35.sit.doctotrust.Models.MedicalRecord;
20import com.ict3103team35.sit.doctotrust.Patients.Patient_MedicalHistoryViewerActivity;
21import com.ict3103team35.sit.doctotrust.Patients.Patient_TodoActivity;
22import com.ict3103team35.sit.doctotrust.R;
23import com.ict3103team35.sit.doctotrust.Services.RetrofitClient;
24
25import java.util.Map;
26
27import javax.crypto.SecretKey;
28import javax.crypto.spec.IvParameterSpec;
29
30import retrofit2.Call;
31import retrofit2.Callback;
32import retrofit2.Response;
33
34public class Doctor_MedicalHistoryUpdate extends AppCompatActivity {
35
36    private String USER_NRIC_FLAG = "";//user flag to make activity unique to each user NRIC
37    private String USER_ROLE_FLAG = "";//user flag to make activity unique to each user role
38    private String USER_NRIC_INTENT = "";//user bundle to get user nric from precedent activity
39
40    private String TAG = "Class-Doctor_MedicalHistoryUpdate";
41
42    private Button btnUpload;
43    private EditText etAllergies, etMedications, etDiagnosis, etSurgeries;
44    private TextView tvOutputValue;
45    private CryptoActivity encAnddec = new CryptoActivity();
46    private String Encrypted_PATIENT_AES_KEY;
47    private static final String AES_ALIAS = "PASSWORD_KEY";
48    private SharedPreferences.Editor editor;
49    private SharedPreferences preferences;
50    private static final String mypreference = "StoringofIV";
51    private String MyMedIVValue = "MyMedIVValue";
52    private String MyMedicalkey = "Patient";
53    private String MyPassIVValue = "MyPassIVValue";
54    private IvParameterSpec SharepreferenceIV;
55    private IvParameterSpec OneTimeIV;
56    SecretKey OneTimeKey;
57
58    MedicalHistory medicalHistory = new MedicalHistory();
59
60    @Override
61    protected void onCreate(Bundle savedInstanceState) {
62        super.onCreate(savedInstanceState);
63        setContentView(R.layout.activity_doctor_medicalhistoryupdate);
64
65        etAllergies = (EditText) findViewById(R.id.medicalHistory_etAllergies);
66        etMedications = (EditText) findViewById(R.id.medicalHistory_etMedications);
67        etDiagnosis = (EditText) findViewById(R.id.medicalHistory_etDiagnosis);
68        etSurgeries = (EditText) findViewById(R.id.medicalHistory_etSurgeries);
69        btnUpload = (Button) findViewById(R.id.doctor_btnMedicalHistoryUpload);
70        tvOutputValue = (TextView) findViewById(R.id.medicalHistory_tvSubmitOutputValue);
71
72        USER_NRIC_FLAG = "S9222228Z";//get user nric flag session
73        Log.d(TAG, "USER_NRIC_FLAG : " + USER_NRIC_FLAG );
74
75        USER_NRIC_INTENT = getIntent().getStringExtra("user_nric_intent");//get user nric from intent
76        Log.d(TAG, "user_nric_intent : " + USER_NRIC_INTENT);
77
78        preferences = getSharedPreferences(mypreference, MODE_PRIVATE);
79
80        if (preferences.contains(MyPassIVValue)) {
81            byte[] iv = Base64.decode(preferences.getString(MyPassIVValue, ""), Base64.DEFAULT);//IV to be sent to database
82            SharepreferenceIV = new IvParameterSpec(iv);
83        }
84         OneTimeKey= encAnddec.generateAESKey(256);
85        String PATIENT_AES_KEY = Base64.encodeToString(OneTimeKey.getEncoded(), Base64.DEFAULT);
86        try {
87            Encrypted_PATIENT_AES_KEY = encAnddec.encryptPassword(PATIENT_AES_KEY, encAnddec.getSecretKey(AES_ALIAS),SharepreferenceIV);//in order to use medical history key, encrypt first using patient secret key
88        } catch (Exception e) {
89            e.printStackTrace();
90        }
91
92        OneTimeIV = encAnddec.MedIVs(16);
93        String MedicalIV = Base64.encodeToString(OneTimeIV.getIV(), Base64.DEFAULT); //sent to database
94        //store iv and secretkey into sharedpreferences
95        preferences = getSharedPreferences(mypreference, MODE_PRIVATE);
96        editor = preferences.edit();
97        editor.putString(MyMedIVValue, MedicalIV);
98        editor.putString(MyMedicalkey,Encrypted_PATIENT_AES_KEY);
99        editor.apply();
100
101
102        getMedicalHistory(USER_NRIC_INTENT);//get medical history
103
104
105        btnUpload.setOnClickListener(new View.OnClickListener() {
106            @Override
107            public void onClick(View v) {
108                //Store to medical history model
109                try {
110                    String allergic = encAnddec.encryptMedicalHistory(etAllergies.getText().toString(), OneTimeKey, OneTimeIV);
111                    String currenttaking = encAnddec.encryptMedicalHistory(etMedications.getText().toString(), OneTimeKey, OneTimeIV);
112                    String medicalprob =encAnddec.encryptMedicalHistory(etDiagnosis.getText().toString(), OneTimeKey, OneTimeIV);
113                    String surgeries = encAnddec.encryptMedicalHistory(etSurgeries.getText().toString(), OneTimeKey, OneTimeIV);
114
115                    medicalHistory.setPatient_nric(USER_NRIC_INTENT);
116                    medicalHistory.setAllergic(allergic);
117                    medicalHistory.setCurrenttaking(currenttaking);
118                    medicalHistory.setMedicalproblem(medicalprob);
119                    medicalHistory.setSurgeries(surgeries);
120                    Log.d("allergy",allergic);
121                    //update medical history db
122                    updateMedicalHistory(medicalHistory,USER_NRIC_FLAG,"accesslog?");
123                } catch (Exception e) {
124                    e.printStackTrace();
125                }
126
127
128
129            }
130        });
131
132
133    }
134
135    /**
136     * Read medical history by nric
137     * @param nric
138     */
139    public void getMedicalHistory(String nric){
140        Log.d(TAG, "getMedicalHistory");
141
142        RetrofitClient.getInstance().getApi().getMedicalHistory(nric).enqueue(
143                new Callback<DefaultGetResponse>() {
144                    @Override
145                    public void onResponse(Call<DefaultGetResponse> call, Response<DefaultGetResponse> response) {
146                        if(response!=null){
147                            //Successfully insert
148                            DefaultGetResponse dgr = response.body();
149                            MedicalHistory medicalHistory = dgr.getMedicalHistory();
150                            Log.d(TAG, medicalHistory.toString());
151
152                            String allergic = medicalHistory.getAllergic();
153                            String currenttaking = medicalHistory.getCurrenttaking();
154                            String medicalprob =medicalHistory.getMedicalproblem();
155                            String surgeries = medicalHistory.getSurgeries();
156
157                            try {
158//                                encAnddec.decryptMedicalHistory(allergic, OneTimeKey, OneTimeIV);
159//                                encAnddec.decryptMedicalHistory(currenttaking, OneTimeKey, OneTimeIV);
160//                                encAnddec.decryptMedicalHistory( medicalprob, OneTimeKey, OneTimeIV);
161//                                encAnddec.decryptMedicalHistory( surgeries, OneTimeKey, OneTimeIV);
162                                Log.d(TAG, allergic);
163                                //set viewa
164                                etAllergies.setText(encAnddec.decryptMedicalHistory(allergic, OneTimeKey, OneTimeIV));
165                                etMedications.setText(encAnddec.decryptMedicalHistory(currenttaking, OneTimeKey, OneTimeIV));
166                                etDiagnosis.setText(encAnddec.decryptMedicalHistory( medicalprob, OneTimeKey, OneTimeIV));
167                                etSurgeries.setText(encAnddec.decryptMedicalHistory( surgeries, OneTimeKey, OneTimeIV));
168
169                            } catch (Exception e) {
170                                e.printStackTrace();
171                            }
172
173
174
175
176                        }
177                        else{
178                            //User Query Failure
179                            String s = response.errorBody().toString();
180                            Log.i(TAG,"Message:"+"getMedicalHistory Query Failure");
181                        }
182                    }
183                    @Override
184                    public void onFailure(Call<DefaultGetResponse> call, Throwable t) {
185                        Log.i(TAG,"on Failure");
186                        Log.i(TAG,t.getMessage());
187                    }
188                });
189
190    }
191
192    /**
193     * Update medical history
194     * @param mh
195     * @param medicalhistory_modify_by_doctor_id
196     * @param accesslog
197     */
198    public void updateMedicalHistory(MedicalHistory mh,String medicalhistory_modify_by_doctor_id,String accesslog){
199
200
201            Log.i(TAG,"updateMedicalHistory:");
202            RetrofitClient.getInstance().getApi()
203                    .updateMedicalHistory(mh.getAllergic(),mh.getCurrenttaking(),mh.getMedicalproblem(),
204                                    mh.getSurgeries(),mh.getPatient_nric(),
205                                    medicalhistory_modify_by_doctor_id,accesslog).enqueue(
206                                            new Callback<DefaultCreateResponse>() {
207                @Override
208                public void onResponse(Call<DefaultCreateResponse> call, Response<DefaultCreateResponse> response) {
209                    if(response.code()==201){
210                        //Successfully insert
211                        DefaultCreateResponse dr =response.body();
212                        Log.i(TAG,"success:"+dr.getMsg());
213
214                        Toast.makeText(getApplicationContext(),"Medical record updated",Toast.LENGTH_SHORT).show();
215                        Intent i = new Intent(getApplicationContext(),Patient_MedicalHistoryViewerActivity.class);
216                        i.putExtra("user_nric_intent", USER_NRIC_INTENT);
217                        startActivity(i);
218
219                    }
220                    else{
221                        //User Query Failure
222                        Log.i(TAG,response.code()+"");
223                        Log.i(TAG,"Message:"+"Create MedicalHistory Query Failure");
224                    }
225                }
226                @Override
227                public void onFailure(Call<DefaultCreateResponse> call, Throwable t) {
228                    Log.i(TAG,"on Failure");
229                    Log.i(TAG,t.getMessage());
230                }
231            });
232
233    }
234}