[+] Version cache

src/main/java/icu/samnyan/aqua/sega/chusan/Chu3VersionHelper.kt

@@ -0,0 +1,28 @@
+package icu.samnyan.aqua.sega.chusan
+
+import ext.logger
+import icu.samnyan.aqua.sega.chusan.model.Chu3Repos
+import org.springframework.stereotype.Component
+
+
+@Component
+class Chu3VersionHelper(val db: Chu3Repos) {
+    val log = logger()
+
+    // Cache of <client id : version>
+    val cache: MutableMap<String, String> = mutableMapOf()
+
+    // Obtain the cabinet's most recent version
+    operator fun get(clientId: String): String {
+        // Try to find the version in the cache
+        cache[clientId]?.let { return it }
+
+        // Not found, check the most recent user
+        return db.userData.findTopByLastClientIdOrderByLastPlayDateDesc(clientId)?.lastDataVersion
+            ?.also { cache[clientId] = it } ?: "2.25.13".also { log.warn("No version found for $clientId") }
+    }
+
+    operator fun set(clientId: String, version: String) {
+        cache[clientId] = version
+    }
+}