Add date serializer to api

api/api-ports/api-opex-rest/src/main/kotlin/co/nilin/opex/api/ports/opex/config/ApiJacksonConfig.kt

@@ -0,0 +1,38 @@
+package co.nilin.opex.api.ports.opex.config
+
+import co.nilin.opex.api.ports.opex.util.DateToEpochSerializer
+import co.nilin.opex.api.ports.opex.util.LocalDateTimeToEpochSerializer
+import co.nilin.opex.api.ports.opex.util.LocalDateToEpochSerializer
+import com.fasterxml.jackson.databind.ObjectMapper
+import com.fasterxml.jackson.databind.json.JsonMapper
+import com.fasterxml.jackson.databind.module.SimpleModule
+import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule
+import com.fasterxml.jackson.module.kotlin.KotlinModule
+import org.springframework.context.annotation.Bean
+import org.springframework.context.annotation.Configuration
+import org.springframework.context.annotation.Primary
+import java.time.LocalDate
+import java.time.LocalDateTime
+import java.util.*
+
+@Configuration
+class ApiJacksonConfig {
+
+    @Bean
+    @Primary
+    fun apiObjectMapper(): ObjectMapper {
+
+        val module = SimpleModule().apply {
+            addSerializer(LocalDateTime::class.java, LocalDateTimeToEpochSerializer())
+            addSerializer(LocalDate::class.java, LocalDateToEpochSerializer())
+            addSerializer(Date::class.java, DateToEpochSerializer())
+
+        }
+
+        return JsonMapper.builder()
+            .addModule(JavaTimeModule())
+            .addModule(KotlinModule.Builder().build())
+            .addModule(module)
+            .build()
+    }
+}

api/api-ports/api-opex-rest/src/main/kotlin/co/nilin/opex/api/ports/opex/util/DateToEpochSerializer.kt

@@ -0,0 +1,22 @@
+package co.nilin.opex.api.ports.opex.util
+
+import com.fasterxml.jackson.core.JsonGenerator
+import com.fasterxml.jackson.databind.JsonSerializer
+import com.fasterxml.jackson.databind.SerializerProvider
+import java.util.*
+
+class DateToEpochSerializer :
+    JsonSerializer<Date>() {
+
+    override fun serialize(
+        value: Date?,
+        gen: JsonGenerator,
+        serializers: SerializerProvider
+    ) {
+        if (value == null) {
+            gen.writeNull()
+            return
+        }
+        gen.writeNumber(value.time)
+    }
+}

api/api-ports/api-opex-rest/src/main/kotlin/co/nilin/opex/api/ports/opex/util/LocalDateTimeToEpochSerializer.kt

@@ -0,0 +1,24 @@
+package co.nilin.opex.api.ports.opex.util
+
+import com.fasterxml.jackson.core.JsonGenerator
+import com.fasterxml.jackson.databind.JsonSerializer
+import com.fasterxml.jackson.databind.SerializerProvider
+import java.time.LocalDateTime
+import java.time.ZoneOffset
+
+class LocalDateTimeToEpochSerializer :
+    JsonSerializer<LocalDateTime>() {
+
+    override fun serialize(
+        value: LocalDateTime,
+        gen: JsonGenerator,
+        serializers: SerializerProvider
+    ) {
+        val epochMillis = value
+            .atOffset(ZoneOffset.UTC)
+            .toInstant()
+            .toEpochMilli()
+
+        gen.writeNumber(epochMillis)
+    }
+}

api/api-ports/api-opex-rest/src/main/kotlin/co/nilin/opex/api/ports/opex/util/LocalDateToEpochSerializer.kt

@@ -0,0 +1,27 @@
+package co.nilin.opex.api.ports.opex.util
+
+import com.fasterxml.jackson.core.JsonGenerator
+import com.fasterxml.jackson.databind.JsonSerializer
+import com.fasterxml.jackson.databind.SerializerProvider
+import java.time.LocalDate
+import java.time.ZoneOffset
+
+class LocalDateToEpochSerializer : JsonSerializer<LocalDate>() {
+    override fun serialize(
+        value: LocalDate?,
+        gen: JsonGenerator,
+        serializers: SerializerProvider
+    ) {
+        if (value == null) {
+            gen.writeNull()
+            return
+        }
+
+        val epochMillis = value
+            .atStartOfDay(ZoneOffset.UTC)
+            .toInstant()
+            .toEpochMilli()
+
+        gen.writeNumber(epochMillis)
+    }
+}