Add metadata about ConfigurationFileFormat

Author: YangSiJun528

initializr-metadata/src/main/java/io/spring/initializr/metadata/InitializrMetadata.java

@@ -51,6 +51,9 @@ public class InitializrMetadata {
 	private final SingleSelectCapability languages = new SingleSelectCapability("language", "Language",
 			"programming language");
 
+	private final SingleSelectCapability configurationFileFormats = new SingleSelectCapability(
+			"configurationFileFormat", "Configuration File Format", "configuration file format");
+
 	private final TextCapability name = new TextCapability("name", "Name", "project name (infer application name)");
 
 	private final TextCapability description = new TextCapability("description", "Description", "project description");
@@ -99,6 +102,10 @@ public SingleSelectCapability getLanguages() {
 		return this.languages;
 	}
 
+	public SingleSelectCapability getConfigurationFileFormats() {
+		return this.configurationFileFormats;
+	}
+
 	public TextCapability getName() {
 		return this.name;
 	}
@@ -135,6 +142,7 @@ public void merge(InitializrMetadata other) {
 		this.packagings.merge(other.packagings);
 		this.javaVersions.merge(other.javaVersions);
 		this.languages.merge(other.languages);
+		this.configurationFileFormats.merge(other.configurationFileFormats);
 		this.name.merge(other.name);
 		this.description.merge(other.description);
 		this.groupId.merge(other.groupId);
@@ -247,6 +255,7 @@ public Map<String, Object> defaults() {
 		defaults.put("packaging", defaultId(this.packagings));
 		defaults.put("javaVersion", defaultId(this.javaVersions));
 		defaults.put("language", defaultId(this.languages));
+		defaults.put("configurationFileFormat", defaultId(this.configurationFileFormats));
 		defaults.put("groupId", this.groupId.getContent());
 		defaults.put("artifactId", this.artifactId.getContent());
 		defaults.put("version", this.version.getContent());

initializr-metadata/src/main/java/io/spring/initializr/metadata/InitializrMetadataBuilder.java

@@ -176,6 +176,7 @@ public void customize(InitializrMetadata metadata) {
 			metadata.getPackagings().merge(this.properties.getPackagings());
 			metadata.getJavaVersions().merge(this.properties.getJavaVersions());
 			metadata.getLanguages().merge(this.properties.getLanguages());
+			metadata.getConfigurationFileFormats().merge(this.properties.getConfigurationFileFormats());
 			this.properties.getGroupId().apply(metadata.getGroupId());
 			this.properties.getArtifactId().apply(metadata.getArtifactId());
 			this.properties.getVersion().apply(metadata.getVersion());

initializr-metadata/src/main/java/io/spring/initializr/metadata/InitializrProperties.java

@@ -62,6 +62,12 @@ public class InitializrProperties extends InitializrConfiguration {
 	@JsonIgnore
 	private final List<DefaultMetadataElement> languages = new ArrayList<>();
 
+	/**
+	 * Available configuration file formats.
+	 */
+	@JsonIgnore
+	private final List<DefaultMetadataElement> configurationFileFormats = new ArrayList<>();
+
 	/**
 	 * Available Spring Boot versions.
 	 */
@@ -124,6 +130,10 @@ public List<DefaultMetadataElement> getLanguages() {
 		return this.languages;
 	}
 
+	public List<DefaultMetadataElement> getConfigurationFileFormats() {
+		return this.configurationFileFormats;
+	}
+
 	public List<DefaultMetadataElement> getBootVersions() {
 		return this.bootVersions;
 	}