[ongeki] Add ongeki basic support and api endpoint.

src/main/java/icu/samnyan/aqua/sega/util/jackson/BasicMapper.java

@@ -0,0 +1,50 @@
+package icu.samnyan.aqua.sega.util.jackson;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.core.type.TypeReference;
+import com.fasterxml.jackson.databind.DeserializationFeature;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.SerializationFeature;
+import com.fasterxml.jackson.databind.module.SimpleModule;
+import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateTimeDeserializer;
+import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateTimeSerializer;
+import org.springframework.stereotype.Component;
+
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+/**
+ * @author samnyan (privateamusement@protonmail.com)
+ */
+@Component
+public class BasicMapper {
+
+    private final ObjectMapper mapper;
+
+    public BasicMapper() {
+        mapper = new ObjectMapper();
+        mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
+        mapper.configure(SerializationFeature.WRITE_ENUMS_USING_INDEX, true);
+        SimpleModule module = new SimpleModule();
+        module.addSerializer(LocalDateTime.class, new LocalDateTimeSerializer(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss.0")));
+
+        module.addDeserializer(LocalDateTime.class, new LocalDateTimeDeserializer(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss.0")));
+        mapper.registerModule(module);
+    }
+
+    public String write(Object o) throws JsonProcessingException {
+        return mapper.writeValueAsString(o);
+
+    }
+
+    public <T> T convert(Map<String, Object> map, Class<T> toClass) {
+        return mapper.convertValue(map, toClass);
+    }
+
+    public LinkedHashMap<String, Object> toMap(Object object) {
+        return mapper.convertValue(object, new TypeReference<>() {
+        });
+    }
+}