Implement the FHIR endpoints in openmrs Stock Management

api/pom.xml

@@ -37,6 +37,16 @@
 
         <!-- End OpenMRS core -->
 
+        <dependency>
+            <groupId>org.openmrs.module</groupId>
+            <artifactId>fhir2-api</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.openmrs.fhir</groupId>
+            <artifactId>fhir-structures-backport-r4</artifactId>
+        </dependency>
+
         <dependency>
             <groupId>org.reflections</groupId>
             <artifactId>reflections</artifactId>

api/src/main/java/org/openmrs/module/stockmanagement/api/InventoryItemService.java

@@ -0,0 +1,10 @@
+package org.openmrs.module.stockmanagement.api;
+
+import org.openmrs.module.stockmanagement.fhir.InventoryItem;
+
+import java.util.List;
+
+public interface InventoryItemService {
+    InventoryItem read(String id);
+    List<InventoryItem> search(String code, String status);
+}

api/src/main/java/org/openmrs/module/stockmanagement/api/impl/InventoryItemServiceImpl.java

@@ -0,0 +1,42 @@
+package org.openmrs.module.stockmanagement.api.impl;
+
+import org.openmrs.module.stockmanagement.api.InventoryItemService;
+import org.openmrs.module.stockmanagement.fhir.InventoryItem;
+import org.springframework.stereotype.Service;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.stream.Collectors;
+
+import org.springframework.transaction.annotation.Transactional;
+
+@Service
+@Transactional
+public class InventoryItemServiceImpl implements InventoryItemService {
+
+    private List<InventoryItem> inventoryItems;
+
+    public InventoryItemServiceImpl() {
+        this.inventoryItems = new ArrayList<>();
+    }
+
+    public InventoryItemServiceImpl(List<InventoryItem> inventoryItems) {
+        this.inventoryItems = inventoryItems;
+    }
+
+    @Override
+    public InventoryItem read(String id) {
+        return inventoryItems.stream()
+                .filter(item -> item.getIdentifierFirstRep().getValue().equals(id))
+                .findFirst()
+                .orElse(null);
+    }
+
+    @Override
+    public List<InventoryItem> search(String code, String status) {
+        return inventoryItems.stream()
+                .filter(item -> (code == null || item.getCodeFirstRep().getText().equals(code)) &&
+                        (status == null || (item.getStatus() != null && item.getStatus().toCode().equals(status))))
+                .collect(Collectors.toList());
+    }
+}

api/src/main/java/org/openmrs/module/stockmanagement/fhir/InventoryItem.java

@@ -0,0 +1,86 @@
+package org.openmrs.module.stockmanagement.fhir;
+
+import org.hl7.fhir.r4.model.CodeableConcept;
+import org.hl7.fhir.r4.model.Identifier;
+import org.hl7.fhir.r4.model.Quantity;
+import org.hl7.fhir.r4.model.ResourceType;
+import org.hl7.fhir.r4.model.DomainResource;
+import org.openmrs.fhir.InventoryItem.InventoryItemStatusCodes;
+
+import ca.uhn.fhir.model.api.annotation.ResourceDef;
+import ca.uhn.fhir.model.api.annotation.SearchParamDefinition;
+import ca.uhn.fhir.rest.gclient.TokenClientParam;
+
+import java.util.List;
+@ResourceDef(name = "InventoryItem", profile = "http://hl7.org/fhir/StructureDefinition/InventoryItem")
+public class InventoryItem extends DomainResource {
+    private InventoryItemStatusCodes status;
+    private List<CodeableConcept> code;
+    private Quantity netContent;
+    private List<Identifier> identifier;
+
+    @SearchParamDefinition(name = "code", path = "InventoryItem.code", description = "Search for products that match this code", type = "token")
+    public static final String SP_CODE = "code";
+
+    @SearchParamDefinition(name = "status", path = "InventoryItem.status", description = "The status of the item", type = "token")
+    public static final String SP_STATUS = "status";
+
+    public static final TokenClientParam CODE = new TokenClientParam(SP_CODE);
+    public static final TokenClientParam STATUS = new TokenClientParam(SP_STATUS);
+
+    // Getters and Setters
+    public InventoryItemStatusCodes getStatus() {
+        return status;
+    }
+
+    public void setStatus(InventoryItemStatusCodes status) {
+        this.status = status;
+    }
+
+    public List<CodeableConcept> getCode() {
+        return code;
+    }
+
+    public void setCode(List<CodeableConcept> code) {
+        this.code = code;
+    }
+
+    public Quantity getNetContent() {
+        return netContent;
+    }
+
+    public void setNetContent(Quantity netContent) {
+        this.netContent = netContent;
+    }
+
+    public List<Identifier> getIdentifier() {
+        return identifier;
+    }
+
+    public void setIdentifier(List<Identifier> identifier) {
+        this.identifier = identifier;
+    }
+
+    public Identifier getIdentifierFirstRep() {
+        return identifier != null && !identifier.isEmpty() ? identifier.get(0) : null;
+    }
+
+    public CodeableConcept getCodeFirstRep() {
+        return code != null && !code.isEmpty() ? code.get(0) : null;
+    }
+
+    @Override
+    public ResourceType getResourceType() {
+        return ResourceType.Basic;
+    }
+
+    @Override
+    public InventoryItem copy() {
+        InventoryItem copy = new InventoryItem();
+        copy.status = this.status;
+        copy.code = this.code;
+        copy.netContent = this.netContent;
+        copy.identifier = this.identifier;
+        return copy;
+    }
+}

api/src/test/java/org/openmrs/module/stockmanagement/fhir/InventoryItemTest.java

@@ -0,0 +1,128 @@
+
+package org.openmrs.module.stockmanagement.fhir;
+
+import org.hl7.fhir.r4.model.CodeableConcept;
+import org.hl7.fhir.r4.model.Identifier;
+import org.hl7.fhir.r4.model.Quantity;
+import org.junit.jupiter.api.Test;
+import org.openmrs.fhir.InventoryItem.InventoryItemStatusCodes;
+import java.util.ArrayList;
+import java.util.List;
+import static org.junit.jupiter.api.Assertions.*;
+import org.hl7.fhir.r4.model.ResourceType;
+
+
+public class InventoryItemTest {
+
+    @Test
+    public void testGetStatus() {
+        InventoryItem item = new InventoryItem();
+        item.setStatus(InventoryItemStatusCodes.ACTIVE);
+        assertEquals(InventoryItemStatusCodes.ACTIVE, item.getStatus());
+    }
+
+    @Test
+    public void testSetStatus() {
+        InventoryItem item = new InventoryItem();
+        item.setStatus(InventoryItemStatusCodes.INACTIVE);
+        assertEquals(InventoryItemStatusCodes.INACTIVE, item.getStatus());
+    }
+
+    @Test
+    public void testGetCode() {
+        InventoryItem item = new InventoryItem();
+        List<CodeableConcept> codes = new ArrayList<>();
+        codes.add(new CodeableConcept().setText("Code1"));
+        item.setCode(codes);
+        assertEquals(codes, item.getCode());
+    }
+
+    @Test
+    public void testSetCode() {
+        InventoryItem item = new InventoryItem();
+        List<CodeableConcept> codes = new ArrayList<>();
+        codes.add(new CodeableConcept().setText("Code2"));
+        item.setCode(codes);
+        assertEquals(codes, item.getCode());
+    }
+
+    @Test
+    public void testGetNetContent() {
+        InventoryItem item = new InventoryItem();
+        Quantity quantity = new Quantity().setValue(10);
+        item.setNetContent(quantity);
+        assertEquals(quantity, item.getNetContent());
+    }
+
+    @Test
+    public void testSetNetContent() {
+        InventoryItem item = new InventoryItem();
+        Quantity quantity = new Quantity().setValue(20);
+        item.setNetContent(quantity);
+        assertEquals(quantity, item.getNetContent());
+    }
+
+    @Test
+    public void testGetIdentifier() {
+        InventoryItem item = new InventoryItem();
+        List<Identifier> identifiers = new ArrayList<>();
+        identifiers.add(new Identifier().setSystem("System1").setValue("Value1"));
+        item.setIdentifier(identifiers);
+        assertEquals(identifiers, item.getIdentifier());
+    }
+
+    @Test
+    public void testSetIdentifier() {
+        InventoryItem item = new InventoryItem();
+        List<Identifier> identifiers = new ArrayList<>();
+        identifiers.add(new Identifier().setSystem("System2").setValue("Value2"));
+        item.setIdentifier(identifiers);
+        assertEquals(identifiers, item.getIdentifier());
+    }
+
+    @Test
+    public void testGetIdentifierFirstRep() {
+        InventoryItem item = new InventoryItem();
+        List<Identifier> identifiers = new ArrayList<>();
+        Identifier identifier = new Identifier().setSystem("System3").setValue("Value3");
+        identifiers.add(identifier);
+        item.setIdentifier(identifiers);
+        assertEquals(identifier, item.getIdentifierFirstRep());
+    }
+
+    @Test
+    public void testGetCodeFirstRep() {
+        InventoryItem item = new InventoryItem();
+        List<CodeableConcept> codes = new ArrayList<>();
+        CodeableConcept code = new CodeableConcept().setText("Code3");
+        codes.add(code);
+        item.setCode(codes);
+        assertEquals(code, item.getCodeFirstRep());
+    }
+
+    @Test
+    public void testCopy() {
+        InventoryItem item = new InventoryItem();
+        item.setStatus(InventoryItemStatusCodes.ACTIVE);
+        List<CodeableConcept> codes = new ArrayList<>();
+        codes.add(new CodeableConcept().setText("Code4"));
+        item.setCode(codes);
+        Quantity quantity = new Quantity().setValue(30);
+        item.setNetContent(quantity);
+        List<Identifier> identifiers = new ArrayList<>();
+        identifiers.add(new Identifier().setSystem("System4").setValue("Value4"));
+        item.setIdentifier(identifiers);
+
+        InventoryItem copy = item.copy();
+        assertEquals(item.getStatus(), copy.getStatus());
+        assertEquals(item.getCode(), copy.getCode());
+        assertEquals(item.getNetContent(), copy.getNetContent());
+        assertEquals(item.getIdentifier(), copy.getIdentifier());
+    }
+
+    @Test
+    public void testGetResourceType() {
+        InventoryItem item = new InventoryItem();
+        assertEquals(ResourceType.Basic, item.getResourceType());
+    }
+}

omod/pom.xml

@@ -1,4 +1,6 @@
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.openmrs.module</groupId>
@@ -41,6 +43,48 @@
 
         <!-- End OpenMRS core -->
 
+        <!-- JUnit 5 dependency -->
+
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-api</artifactId>
+            <version>5.7.0</version>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-engine</artifactId>
+            <version>5.7.0</version>
+            <scope>test</scope>
+        </dependency>
+
+        <!-- Mockito dependency -->
+
+        <dependency>
+            <groupId>org.mockito</groupId>
+            <artifactId>mockito-core</artifactId>
+            <version>3.6.28</version>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <version>2.4.0</version>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.openmrs.module</groupId>
+            <artifactId>fhir2-api</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.openmrs.fhir</groupId>
+            <artifactId>fhir-structures-backport-r4</artifactId>
+        </dependency>
+
         <dependency>
             <groupId>org.openmrs.module</groupId>
             <artifactId>webservices.rest-omod</artifactId>

omod/src/main/java/org/openmrs/module/stockmanagement/config/StockManagementFhirResourceConfig.java

@@ -0,0 +1,23 @@
+package org.openmrs.module.stockmanagement.config;
+
+import ca.uhn.fhir.context.FhirContext;
+import org.openmrs.module.stockmanagement.web.resource.InventoryItemProvider;
+import org.openmrs.fhir.InventoryItem;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class StockManagementFhirResourceConfig {
+
+    @Bean
+    public FhirContext fhirContext() {
+        FhirContext fhirContext = FhirContext.forR4(); 
+        fhirContext.getResourceDefinition(InventoryItem.class);
+        return fhirContext;
+    }
+
+    @Bean
+    public InventoryItemProvider InventoryItemProvider() {
+        return new InventoryItemProvider();
+    }
+}

omod/src/main/java/org/openmrs/module/stockmanagement/web/controller/InventoryItemController.java

@@ -0,0 +1,27 @@
+package org.openmrs.module.stockmanagement.web.controller;
+
+import org.openmrs.module.stockmanagement.api.InventoryItemService;
+import org.openmrs.module.stockmanagement.fhir.InventoryItem;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/openmrs/ws/fhir2/R4/InventoryItem")
+public class InventoryItemController {
+
+    @Autowired
+    private InventoryItemService inventoryItemService;
+
+    @GetMapping("/{id}")
+    public InventoryItem getInventoryItem(@PathVariable String id) {
+        return inventoryItemService.read(id);
+    }
+
+    @GetMapping
+    public List<InventoryItem> searchInventoryItems(@RequestParam(required = false) String code,
+            @RequestParam(required = false) String status) {
+        return inventoryItemService.search(code, status);
+    }
+}