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KHP3-6550 - Added RMS integration for patient registration, bills and payments #43

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KHP3-6550 - Added RMS integration for patient registration, bills and payments #43

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310 changes: 310 additions & 0 deletions api/src/main/java/org/openmrs/module/kenyaemr/cashier/advice/NewBillCreationSyncToRMS.java
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package org.openmrs.module.kenyaemr.cashier.advice;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.PrintStream;
import java.lang.reflect.Method;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.Date;
import java.util.LinkedList;
import java.util.List;

import javax.net.ssl.HttpsURLConnection;
import javax.validation.constraints.NotNull;

import org.codehaus.jackson.JsonNode;
import org.codehaus.jackson.map.ObjectMapper;
import org.openmrs.api.context.Context;
import org.openmrs.module.kenyaemr.cashier.api.model.Bill;
import org.openmrs.module.kenyaemr.cashier.api.model.BillLineItem;
import org.openmrs.module.kenyaemr.cashier.api.util.AdviceUtils;
import org.openmrs.module.kenyaemr.cashier.util.Utils;
import org.openmrs.ui.framework.SimpleObject;
import org.springframework.aop.AfterReturningAdvice;

/**
* Detects when a new bill has been created and syncs to RMS Financial System
*/
public class NewBillCreationSyncToRMS implements AfterReturningAdvice {

private Boolean debugMode = false;

@Override
public void afterReturning(Object returnValue, Method method, Object[] args, Object target) throws Throwable {
try {
debugMode = AdviceUtils.isRMSLoggingEnabled();
if(AdviceUtils.isRMSIntegrationEnabled()) {
if (method.getName().equals("save") && args.length > 0 && args[0] instanceof Bill) {
Bill bill = (Bill) args[0];

if (bill == null) {
return;
}

Date billCreationDate = bill.getDateCreated();
if(debugMode) System.out.println("RMS Sync Cashier Module: bill was created on: " + billCreationDate);

if (billCreationDate != null && AdviceUtils.checkIfCreateModetOrEditMode(billCreationDate)) {
// CREATE Mode
if(debugMode) System.out.println("RMS Sync Cashier Module: New Bill being created");
// Use a thread to send the data. This frees up the frontend to proceed
syncBillRunnable runner = new syncBillRunnable(bill);
Thread thread = new Thread(runner);
thread.start();
} else {
// EDIT Mode
if(debugMode) System.out.println("RMS Sync Cashier Module: Bill being edited. We ignore");
}
}
}
} catch(Exception ex) {
if(debugMode) System.err.println("RMS Sync Cashier Module: Error getting new Bill: " + ex.getMessage());
ex.printStackTrace();
}
}

private String prepareNewBillRMSPayload(@NotNull Bill bill) {
String ret = "";

try {
Context.openSession();
if (bill != null) {
if(debugMode) System.out.println(
"RMS Sync Cashier Module: New bill created: UUID" + bill.getUuid() + ", Total: " + bill.getTotal());
SimpleObject payloadPrep = new SimpleObject();
payloadPrep.put("bill_reference", bill.getUuid());
payloadPrep.put("total_cost", bill.getTotal());
payloadPrep.put("hospital_code", Utils.getDefaultLocationMflCode(null));
payloadPrep.put("patient_id", bill.getPatient().getUuid());
List<SimpleObject> items = new LinkedList<>();
List<BillLineItem> billItems = bill.getLineItems();
for(BillLineItem billLineItem : billItems) {
SimpleObject itemsPayload = new SimpleObject();
if(billLineItem.getBillableService() != null) {
itemsPayload.put("service_code", "3f500af5-3139-45b0-ab47-57f9c504f92d");
itemsPayload.put("service_name", "service");
} else if(billLineItem.getItem() != null) {
itemsPayload.put("service_code", "a3dd3be8-05c5-425e-8e08-6765f6a50b76");
itemsPayload.put("service_name", "stock_item");
} else {
itemsPayload.put("service_code", "");
itemsPayload.put("service_name", "");
}
itemsPayload.put("unique_id", billLineItem.getUuid());
itemsPayload.put("bill_id", bill.getUuid());
itemsPayload.put("quantity", billLineItem.getQuantity());
itemsPayload.put("price", billLineItem.getPrice());
itemsPayload.put("excempted", "no");

items.add(itemsPayload);
}
payloadPrep.put("bill_items", items);
ret = payloadPrep.toJson();
if(debugMode) System.out.println("RMS Sync Cashier Module: Got bill details: " + ret);
} else {
if(debugMode) System.out.println("RMS Sync Cashier Module: bill is null");
}
} catch (Exception ex) {
if(debugMode) System.err.println("RMS Sync Cashier Module: Error getting new bill payload: " + ex.getMessage());
ex.printStackTrace();
} finally {
Context.closeSession();
}

return (ret);
}

/**
* Send the new bill payload to RMS
* @param patient
* @return
*/
private Boolean sendRMSNewBill(@NotNull Bill bill) {
Boolean ret = false;
String payload = prepareNewBillRMSPayload(bill);

HttpsURLConnection con = null;
HttpsURLConnection connection = null;
try {
if(debugMode) System.out.println("RMS Sync Cashier Module: using bill payload: " + payload);

// Create URL
String baseURL = AdviceUtils.getRMSEndpointURL();
String completeURL = baseURL + "/login";
if(debugMode) System.out.println("RMS Sync Cashier Module: Auth URL: " + completeURL);
URL url = new URL(completeURL);
String rmsUser = AdviceUtils.getRMSAuthUserName();
String rmsPassword = AdviceUtils.getRMSAuthPassword();
SimpleObject authPayloadCreator = SimpleObject.create("email", rmsUser != null ? rmsUser : "", "password",
rmsPassword != null ? rmsPassword : "");
String authPayload = authPayloadCreator.toJson();

// Get token
con = (HttpsURLConnection) url.openConnection();
con.setRequestMethod("POST");
con.setDoOutput(true);
con.setRequestProperty("Content-Type", "application/json; charset=UTF-8");
con.setRequestProperty("Accept", "application/json");
con.setConnectTimeout(10000); // set timeout to 10 seconds

PrintStream os = new PrintStream(con.getOutputStream());
os.print(authPayload);
os.close();

int responseCode = con.getResponseCode();

if (responseCode == HttpURLConnection.HTTP_OK) { //success
BufferedReader in = null;
in = new BufferedReader(new InputStreamReader(con.getInputStream()));

String input;
StringBuffer response = new StringBuffer();

while ((input = in.readLine()) != null) {
response.append(input);
}
in.close();

String returnResponse = response.toString();
if(debugMode) System.out.println("RMS Sync Cashier Module: Got Auth Response as: " + returnResponse);

// Extract the token and token expiry date
ObjectMapper mapper = new ObjectMapper();
JsonNode jsonNode = null;
String token = "";
String expires_at = "";
SimpleObject authObj = new SimpleObject();

try {
jsonNode = mapper.readTree(returnResponse);
if (jsonNode != null) {
token = jsonNode.get("token") == null ? "" : jsonNode.get("token").getTextValue();
authObj.put("token", token);
expires_at = jsonNode.get("expires_at") == null ? "" : jsonNode.get("expires_at").getTextValue();
authObj.put("expires_at", expires_at);
}
}
catch (Exception e) {
if(debugMode) System.err.println("RMS Sync Cashier Module: Error getting auth token: " + e.getMessage());
e.printStackTrace();
}

if (!token.isEmpty()) {
try {
// We send the payload to RMS
if(debugMode) System.err.println(
"RMS Sync Cashier Module: We got the Auth token. Now sending the new bill details. Token: "
+ token);
String finalUrl = baseURL + "/create-bill";
if(debugMode) System.out.println("RMS Sync Cashier Module: Final Create Bill URL: " + finalUrl);
URL finUrl = new URL(finalUrl);

connection = (HttpsURLConnection) finUrl.openConnection();
connection.setRequestMethod("POST");
connection.setDoOutput(true);
connection.setRequestProperty("Authorization", "Bearer " + token);
connection.setRequestProperty("Content-Type", "application/json; charset=UTF-8");
connection.setRequestProperty("Accept", "application/json");
connection.setConnectTimeout(10000);

PrintStream pos = new PrintStream(connection.getOutputStream());
pos.print(payload);
pos.close();

int finalResponseCode = connection.getResponseCode();

if (finalResponseCode == HttpURLConnection.HTTP_OK) { //success
BufferedReader fin = null;
fin = new BufferedReader(new InputStreamReader(connection.getInputStream()));

String finalOutput;
StringBuffer finalResponse = new StringBuffer();

while ((finalOutput = fin.readLine()) != null) {
finalResponse.append(finalOutput);
}
in.close();

String finalReturnResponse = finalResponse.toString();
if(debugMode) System.out.println("RMS Sync Cashier Module: Got New Bill Response as: " + finalReturnResponse);

ObjectMapper finalMapper = new ObjectMapper();
JsonNode finaljsonNode = null;
Boolean success = false;
String message = "";

try {
finaljsonNode = finalMapper.readTree(finalReturnResponse);
if (finaljsonNode != null) {
success = finaljsonNode.get("success") == null ? false
: finaljsonNode.get("success").getBooleanValue();
message = finaljsonNode.get("message") == null ? ""
: finaljsonNode.get("message").getTextValue();
}

if(debugMode) System.err.println("RMS Sync Cashier Module: Got New Bill final response: success: " + success
+ " message: " + message);
}
catch (Exception e) {
if(debugMode) System.err.println(
"RMS Sync Cashier Module: Error getting New Bill final response: " + e.getMessage());
e.printStackTrace();
}

if (success != null && success == true) {
ret = true;
}

} else {
if(debugMode) System.err.println("RMS Sync Cashier Module: Failed to send New Bill final payload: " + finalResponseCode);
}
}
catch (Exception em) {
if(debugMode) System.err.println("RMS Sync Cashier Module: Error. Failed to send the New Bill final payload: " + em.getMessage());
em.printStackTrace();
}
}
} else {
if(debugMode) System.err.println("RMS Sync Cashier Module: Failed to get auth: " + responseCode);
}

}
catch (Exception ex) {
if(debugMode) System.err.println("RMS Sync Cashier Module: Error. Failed to get auth token: " + ex.getMessage());
ex.printStackTrace();
}

return (ret);
}

/**
* A thread to free up the frontend
*/
private class syncBillRunnable implements Runnable {

Bill bill = new Bill();
Boolean debugMode = AdviceUtils.isRMSLoggingEnabled();

public syncBillRunnable(@NotNull Bill bill) {
this.bill = bill;
}

@Override
public void run() {
// Run the thread

try {
if(debugMode) System.out.println("RMS Sync Cashier Module: Start sending Bill to RMS");

sendRMSNewBill(bill);

if(debugMode) System.out.println("RMS Sync Cashier Module: Finished sending Bill to RMS");
} catch(Exception ex) {
if(debugMode) System.err.println("RMS Sync Cashier Module: Error. Failed to send Bill to RMS: " + ex.getMessage());
ex.printStackTrace();
}
}
}

}
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