- GET /features/{id}/quicklook added and tested on controller level

src/main/java/click/poweronoff/satellite/api/FeaturesController.java

@@ -32,4 +32,10 @@ public class FeaturesController {
         return dataService.getFeature(id).orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND, "Unable to find feature"));
     }
 
+    @RequestMapping(value = "/features/{id}/quicklook", method = RequestMethod.GET, produces = "image/png")
+    @ResponseBody
+    public byte[] quicklookByFeatureId(@PathVariable String id) {
+        return dataService.getPicture(id).orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND, "Unable to find feature"));
+    }
+
 }

src/main/java/click/poweronoff/satellite/domain/Feature.java

@@ -1,5 +1,6 @@
 package click.poweronoff.satellite.domain;
 
+import com.fasterxml.jackson.annotation.JsonIgnore;
 import lombok.AllArgsConstructor;
 import lombok.EqualsAndHashCode;
 import lombok.Getter;
@@ -18,4 +19,7 @@ public class Feature {
     private long endViewingDate;
 
     private String missionName;
+
+    @JsonIgnore
+    private byte[] picture;
 }

src/main/java/click/poweronoff/satellite/service/DataService.java

@@ -26,10 +26,10 @@ public interface DataService {
 
 
     /**
-     * returned a picture as a Base64 encoded String representation for given feature id
+     * returned a picture as a byte[] representation for given feature id
      *
      * @param featureId feature id
-     * @return a Base64 encoded String representation for a picture
+     * @return a picture as a byte[]
      */
-    String getPictureAsB64(final String featureId);
+    Optional<byte[]> getPicture(final String featureId);
 }

src/main/java/click/poweronoff/satellite/service/DataServiceImpl.java

@@ -20,7 +20,7 @@ public class DataServiceImpl implements DataService {
     }
 
     @Override
-    public String getPictureAsB64(String featureId) {
-        return null;
+    public Optional<byte[]> getPicture(String featureId) {
+        return Optional.empty();
     }
 }

src/test/java/click/poweronoff/satellite/api/FeaturesControllerTest.java

@@ -33,7 +33,7 @@ public class FeaturesControllerTest {
 
     @Test
     public void getFeaturesShouldReturnDefaultMessage() throws Exception {
-        when(dataService.getAllFeatures()).thenReturn(List.of(new Feature("feature-id", 123L, 234L, 345L, "mission")));
+        when(dataService.getAllFeatures()).thenReturn(List.of(createTestFeature()));
         this.mockMvc.perform(get("/features")).andDo(print())
                 .andExpect(status().isOk())
                 .andExpect(content().contentType(MediaType.APPLICATION_JSON))
@@ -48,7 +48,7 @@ public class FeaturesControllerTest {
 
     @Test
     public void getFeatureByIdShouldReturnAMessage() throws Exception {
-        when(dataService.getFeature(anyString())).thenReturn(Optional.of(new Feature("feature-id", 123L, 234L, 345L, "mission")));
+        when(dataService.getFeature(anyString())).thenReturn(Optional.of(createTestFeature()));
         this.mockMvc.perform(get("/features/feature-id"))
                 .andExpect(status().isOk())
                 .andExpect(content().contentType(MediaType.APPLICATION_JSON));
@@ -62,4 +62,25 @@ public class FeaturesControllerTest {
     }
 
 
+    @Test
+    public void getQuicklookByFeatureIdShouldReturnNotFound() throws Exception {
+        when(dataService.getPicture(anyString())).thenReturn(Optional.empty());
+        this.mockMvc.perform(get("/features/non-existing-feature/quicklook"))
+                .andExpect(status().isNotFound());
+    }
+
+    @Test
+    public void getQuicklookByFeatureIdShouldReturnAPicture() throws Exception {
+        Feature testFeature = createTestFeature();
+
+        when(dataService.getPicture(anyString())).thenReturn(Optional.of(testFeature.getPicture()));
+        this.mockMvc.perform(get("/features/existing-feature/quicklook"))
+                .andExpect(status().isOk())
+                .andExpect(content().contentType(MediaType.IMAGE_PNG))
+                .andExpect(content().bytes(testFeature.getPicture()));
+    }
+
+    private Feature createTestFeature() {
+        return new Feature("feature-id", 123L, 234L, 345L, "mission", "test-picture".getBytes());
+    }
 }