From 4dc8296cc3041d5c5d24626ecfba49c17d295e4d Mon Sep 17 00:00:00 2001
From: Chaoran Chen <mail@chaoran-chen.de>
Date: Mon, 25 Nov 2024 22:23:19 +0100
Subject: [PATCH] fix(backend): add LocalDate serialization module

---
 .../backend/utils/LocalDateJacksonModule.kt   | 29 +++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 backend/src/main/kotlin/org/loculus/backend/utils/LocalDateJacksonModule.kt

diff --git a/backend/src/main/kotlin/org/loculus/backend/utils/LocalDateJacksonModule.kt b/backend/src/main/kotlin/org/loculus/backend/utils/LocalDateJacksonModule.kt
new file mode 100644
index 000000000..be687bfc7
--- /dev/null
+++ b/backend/src/main/kotlin/org/loculus/backend/utils/LocalDateJacksonModule.kt
@@ -0,0 +1,29 @@
+package org.loculus.backend.utils
+
+import com.fasterxml.jackson.core.JsonGenerator
+import com.fasterxml.jackson.core.JsonParser
+import com.fasterxml.jackson.databind.DeserializationContext
+import com.fasterxml.jackson.databind.JsonDeserializer
+import com.fasterxml.jackson.databind.JsonSerializer
+import com.fasterxml.jackson.databind.SerializerProvider
+import com.fasterxml.jackson.databind.module.SimpleModule
+import kotlinx.datetime.LocalDate
+import org.springframework.context.annotation.Configuration
+
+@Configuration
+class LocalDateJacksonModule : SimpleModule() {
+    init {
+        addSerializer(LocalDate::class.java, LocalDateSerializer())
+        addDeserializer(LocalDate::class.java, LocalDateDeserializer())
+    }
+}
+
+class LocalDateSerializer : JsonSerializer<LocalDate>() {
+    override fun serialize(value: LocalDate, gen: JsonGenerator, serializers: SerializerProvider) {
+        gen.writeString(value.toString())
+    }
+}
+
+class LocalDateDeserializer : JsonDeserializer<LocalDate>() {
+    override fun deserialize(p: JsonParser, ctxt: DeserializationContext): LocalDate = LocalDate.parse(p.text)
+}