emr external app launch (#6)

Author: VaishSiddharth

omod/src/main/java/org/openmrs/module/smartonfhir/web/filter/SmartForwardingFilter.java

@@ -42,6 +42,11 @@ public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain)
 				req.getRequestDispatcher("/ms/smartPatientSelected").forward(req, res);
 				return;
 			}
+			if (request.getRequestURI().contains("/ms/smartEhrLaunchServlet")) {
+				req.getRequestDispatcher("/ms/smartEhrLaunchServlet").forward(req, res);
+				return;
+			}
+			
 		}
 		chain.doFilter(req, res);
 	}

omod/src/main/java/org/openmrs/module/smartonfhir/web/servlet/SmartEhrLaunchServlet.java

@@ -0,0 +1,36 @@
+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public License,
+ * v. 2.0. If a copy of the MPL was not distributed with this file, You can
+ * obtain one at http://mozilla.org/MPL/2.0/. OpenMRS is also distributed under
+ * the terms of the Healthcare Disclaimer located at http://openmrs.org/license.
+ *
+ * Copyright (C) OpenMRS Inc. OpenMRS is a registered trademark and the OpenMRS
+ * graphic logo is a trademark of OpenMRS Inc.
+ */
+package org.openmrs.module.smartonfhir.web.servlet;
+
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import java.io.IOException;
+
+import org.apache.commons.lang3.StringUtils;
+import org.apache.http.HttpStatus;
+
+public class SmartEhrLaunchServlet extends HttpServlet {
+	
+	@Override
+	protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {
+		String patientId = req.getParameter("patientId");
+		String url = "http://127.0.0.1:9090/launch-standalone.html?iss=http://localhost:8080/openmrs/ws/fhir2/R4&launch="
+		        + patientId;
+		
+		if (StringUtils.isBlank(url)) {
+			resp.sendError(HttpStatus.SC_BAD_REQUEST, "A url must be provided");
+			return;
+		}
+		
+		resp.sendRedirect(resp.encodeRedirectURL(url));
+	}
+}

omod/src/main/resources/apps/findpatient_app.json

@@ -0,0 +1,18 @@
+[
+  {
+    "id": "coreapps.smartRedirect",
+    "description": "Basic patient search, by ID or Name (using OpenMRS's standard patient search)",
+    "order": 2,
+    "extensions": [
+      {
+        "id": "coreapps.activeVisitsHomepageLink",
+        "extensionPointId": "patientDashboard.overallActions",
+        "type": "link",
+        "label": "coreapps.findPatient.app.label",
+        "url": "ms/smartEhrLaunchServlet?app=smart_client&patientId={{patient.uuid}}",
+        "icon": "icon-search",
+        "requiredPrivilege": "App: coreapps.findPatient"
+      }
+    ]
+  }
+]

omod/src/main/resources/apps/smart_app.json

@@ -0,0 +1,24 @@
+[
+  {
+    "id": "coreapps.smartAppManagement",
+    "description": "SMART Apps",
+    "extensionPoints": [
+      {
+        "id": "smartAppManagement.apps",
+        "description": "Apps on the SMART App Management Home Page"
+      }
+    ],
+    "extensions": [
+      {
+        "id": "coreapps.smartAppManagement.homepageLink",
+        "extensionPointId": "org.openmrs.referenceapplication.homepageLink",
+        "type": "link",
+        "label": "SMART Apps",
+        "url": "coreapps/datamanagement/dataManagement.page",
+        "icon": "icon-hdd",
+        "order": 89,
+        "requiredPrivilege": "App: coreapps.dataManagement"
+      }
+    ]
+  }
+]

omod/src/main/resources/config.xml

@@ -50,6 +50,11 @@
 		<servlet-class>org.openmrs.module.smartonfhir.web.servlet.SmartPatientSelected</servlet-class>
 	</servlet>
 
+	<servlet>
+		<servlet-name>smartEhrLaunchServlet</servlet-name>
+		<servlet-class>org.openmrs.module.smartonfhir.web.servlet.SmartEhrLaunchServlet</servlet-class>
+	</servlet>
+
 	<filter>
 		<filter-name>smartCORSFilter</filter-name>
 		<filter-class>org.openmrs.module.smartonfhir.web.filter.CORSFilter</filter-class>
@@ -96,6 +101,8 @@
 		<filter-name>smartForwardingFilter</filter-name>
 		<url-pattern>/ws/fhir2</url-pattern>
 		<url-pattern>/ws/fhir2/*</url-pattern>
+		<url-pattern>/ms/smartEhrLaunchServlet</url-pattern>
+		<url-pattern>/ms/smartEhrLaunchServlet/*</url-pattern>
 	</filter-mapping>
 
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