Support HAL-Forms options

core/src/main/java/com/cosium/hal_mock_mvc/HalMockMvcConfiguration.java

@@ -0,0 +1,15 @@
+package com.cosium.hal_mock_mvc;
+
+import com.fasterxml.jackson.databind.Module;
+import org.springframework.context.annotation.Bean;
+
+/**
+ * @author Réda Housni Alaoui
+ */
+public class HalMockMvcConfiguration {
+
+  @Bean
+  public Module halMockMvcJacksonModule() {
+    return new JacksonModule();
+  }
+}

core/src/main/java/com/cosium/hal_mock_mvc/JacksonModule.java

@@ -0,0 +1,27 @@
+package com.cosium.hal_mock_mvc;
+
+import com.cosium.hal_mock_mvc.template.options.InlineElementRepresentation;
+import com.cosium.hal_mock_mvc.template.options.InlineElementRepresentationDeserializer;
+import com.fasterxml.jackson.core.Version;
+import com.fasterxml.jackson.databind.module.SimpleModule;
+
+/**
+ * @author Réda Housni Alaoui
+ */
+class JacksonModule extends SimpleModule {
+
+  public JacksonModule() {
+    addDeserializer(
+        InlineElementRepresentation.class, new InlineElementRepresentationDeserializer());
+  }
+
+  @Override
+  public String getModuleName() {
+    return "com.cosium.hal_mock_mvc";
+  }
+
+  @Override
+  public Version version() {
+    return Version.unknownVersion();
+  }
+}

core/src/main/java/com/cosium/hal_mock_mvc/TemplatePropertyRepresentation.java

@@ -2,6 +2,7 @@
 
 import static java.util.Objects.requireNonNull;
 
+import com.cosium.hal_mock_mvc.template.options.OptionsRepresentation;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import java.util.Optional;
@@ -16,6 +17,7 @@ public class TemplatePropertyRepresentation {
   private final String prompt;
   private final String regex;
   private final boolean templated;
+  private final OptionsRepresentation options;
 
   @JsonCreator
   TemplatePropertyRepresentation(
@@ -24,13 +26,15 @@ public class TemplatePropertyRepresentation {
       @JsonProperty("value") String value,
       @JsonProperty("prompt") String prompt,
       @JsonProperty("regex") String regex,
-      @JsonProperty("templated") Boolean templated) {
+      @JsonProperty("templated") Boolean templated,
+      @JsonProperty("options") OptionsRepresentation options) {
     this.name = requireNonNull(name);
     this.required = Optional.ofNullable(required).orElse(false);
     this.value = value;
     this.prompt = Optional.ofNullable(prompt).orElse(name);
     this.regex = regex;
     this.templated = Optional.ofNullable(templated).orElse(false);
+    this.options = options;
   }
 
   public String name() {
@@ -56,4 +60,8 @@ public Optional<String> regex() {
   public boolean templated() {
     return templated;
   }
+
+  public Optional<OptionsRepresentation> options() {
+    return Optional.ofNullable(options);
+  }
 }

core/src/main/java/com/cosium/hal_mock_mvc/template/options/InlineElementRepresentation.java

@@ -0,0 +1,7 @@
+package com.cosium.hal_mock_mvc.template.options;
+
+/**
+ * @author Réda Housni Alaoui
+ */
+public sealed interface InlineElementRepresentation
+    permits MapInlineElementRepresentation, StringInlineElementRepresentation {}

core/src/main/java/com/cosium/hal_mock_mvc/template/options/InlineElementRepresentationDeserializer.java

@@ -0,0 +1,54 @@
+package com.cosium.hal_mock_mvc.template.options;
+
+import com.fasterxml.jackson.core.JsonParser;
+import com.fasterxml.jackson.core.JsonToken;
+import com.fasterxml.jackson.core.type.TypeReference;
+import com.fasterxml.jackson.databind.DeserializationContext;
+import com.fasterxml.jackson.databind.deser.std.StdDeserializer;
+import com.fasterxml.jackson.databind.exc.MismatchedInputException;
+import java.io.IOException;
+import java.util.Map;
+
+/**
+ * @author Réda Housni Alaoui
+ */
+public class InlineElementRepresentationDeserializer
+    extends StdDeserializer<InlineElementRepresentation> {
+
+  public InlineElementRepresentationDeserializer() {
+    this(null);
+  }
+
+  protected InlineElementRepresentationDeserializer(Class<?> vc) {
+    super(vc);
+  }
+
+  @Override
+  public InlineElementRepresentation deserialize(JsonParser p, DeserializationContext ctxt)
+      throws IOException {
+
+    JsonToken currentToken = p.currentToken();
+    if (currentToken == JsonToken.START_OBJECT) {
+      Map<String, String> map = p.readValueAs(new StringStringMap());
+      if (map == null) {
+        return null;
+      }
+      return new MapInlineElementRepresentation(map);
+    }
+    if (currentToken == JsonToken.VALUE_STRING) {
+      String value = p.readValueAs(String.class);
+      if (value == null) {
+        return null;
+      }
+      return new StringInlineElementRepresentation(value);
+    }
+
+    throw MismatchedInputException.from(
+        p,
+        InlineElementRepresentation.class,
+        "%s should have been either %s or %s. But it is not."
+            .formatted(currentToken, JsonToken.START_OBJECT, JsonToken.VALUE_STRING));
+  }
+
+  private static class StringStringMap extends TypeReference<Map<String, String>> {}
+}

core/src/main/java/com/cosium/hal_mock_mvc/template/options/MapInlineElementRepresentation.java

@@ -0,0 +1,15 @@
+package com.cosium.hal_mock_mvc.template.options;
+
+import java.util.Map;
+import java.util.Optional;
+
+/**
+ * @author Réda Housni Alaoui
+ */
+public record MapInlineElementRepresentation(Map<String, String> map)
+    implements InlineElementRepresentation {
+
+  public MapInlineElementRepresentation(Map<String, String> map) {
+    this.map = Optional.ofNullable(map).map(Map::copyOf).orElseGet(Map::of);
+  }
+}

core/src/main/java/com/cosium/hal_mock_mvc/template/options/OptionsLinkRepresentation.java

@@ -0,0 +1,39 @@
+package com.cosium.hal_mock_mvc.template.options;
+
+import static java.util.Objects.requireNonNull;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import java.util.Optional;
+
+/**
+ * @author Réda Housni Alaoui
+ */
+public class OptionsLinkRepresentation {
+
+  private final String href;
+  private final String type;
+  private final boolean templated;
+
+  @JsonCreator
+  public OptionsLinkRepresentation(
+      @JsonProperty("href") String href,
+      @JsonProperty("type") String type,
+      @JsonProperty("templated") Boolean templated) {
+    this.href = requireNonNull(href);
+    this.type = type;
+    this.templated = Optional.ofNullable(templated).orElse(false);
+  }
+
+  public String href() {
+    return href;
+  }
+
+  public Optional<String> type() {
+    return Optional.ofNullable(type);
+  }
+
+  public boolean templated() {
+    return templated;
+  }
+}

core/src/main/java/com/cosium/hal_mock_mvc/template/options/OptionsRepresentation.java

@@ -0,0 +1,66 @@
+package com.cosium.hal_mock_mvc.template.options;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import java.util.List;
+import java.util.Optional;
+
+/**
+ * @author Réda Housni Alaoui
+ */
+public class OptionsRepresentation {
+
+  private final List<InlineElementRepresentation> inline;
+  private final OptionsLinkRepresentation link;
+  private final Long maxItems;
+  private final long minItems;
+  private final String promptField;
+  private final List<String> selectedValues;
+  private final String valueField;
+
+  @JsonCreator
+  public OptionsRepresentation(
+      @JsonProperty("inline") List<InlineElementRepresentation> inline,
+      @JsonProperty("link") OptionsLinkRepresentation link,
+      @JsonProperty("maxItems") Long maxItems,
+      @JsonProperty("minItems") Long minItems,
+      @JsonProperty("promptField") String promptField,
+      @JsonProperty("selectedValues") List<String> selectedValues,
+      @JsonProperty("valueField") String valueField) {
+    this.inline = Optional.ofNullable(inline).map(List::copyOf).orElseGet(List::of);
+    this.link = link;
+    this.maxItems = maxItems;
+    this.minItems = Optional.ofNullable(minItems).orElse(0L);
+    this.promptField = promptField;
+    this.selectedValues = Optional.ofNullable(selectedValues).map(List::copyOf).orElseGet(List::of);
+    this.valueField = valueField;
+  }
+
+  public List<InlineElementRepresentation> inline() {
+    return inline;
+  }
+
+  public Optional<OptionsLinkRepresentation> link() {
+    return Optional.ofNullable(link);
+  }
+
+  public Optional<Long> maxItems() {
+    return Optional.ofNullable(maxItems);
+  }
+
+  public long minItems() {
+    return minItems;
+  }
+
+  public Optional<String> promptField() {
+    return Optional.ofNullable(promptField);
+  }
+
+  public List<String> selectedValues() {
+    return selectedValues;
+  }
+
+  public Optional<String> valueField() {
+    return Optional.ofNullable(valueField);
+  }
+}

core/src/main/java/com/cosium/hal_mock_mvc/template/options/StringInlineElementRepresentation.java

@@ -0,0 +1,14 @@
+package com.cosium.hal_mock_mvc.template.options;
+
+import static java.util.Objects.requireNonNull;
+
+/**
+ * @author Réda Housni Alaoui
+ */
+public record StringInlineElementRepresentation(String value)
+    implements InlineElementRepresentation {
+
+  public StringInlineElementRepresentation {
+    requireNonNull(value);
+  }
+}

core/src/test/java/com/cosium/hal_mock_mvc/App.java

@@ -6,13 +6,15 @@
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Import;
 import org.springframework.hateoas.config.EnableHypermediaSupport;
 
 /**
  * @author Réda Housni Alaoui
  */
 @EnableHypermediaSupport(type = {HAL_FORMS, HAL})
 @SpringBootApplication
+@Import(HalMockMvcConfiguration.class)
 @ComponentScan(basePackages = "com.cosium.hal_mock_mvc")
 public class App {
   public static void main(String[] args) {