Add Backend to Monorepo

2024-08-18 11:15:54 +02:00
parent b8e50dc139
commit fd7fe8c305
37 changed files with 2703 additions and 26 deletions
@@ -0,0 +1,110 @@
+/*
+ *   This file is a part of the SteamWar software.
+ *
+ *   Copyright (C) 2024 SteamWar.de-Serverteam
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU Affero General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ *   GNU Affero General Public License for more details.
+ *
+ *   You should have received a copy of the GNU Affero General Public License
+ *   along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.data
+
+import io.ktor.client.*
+import io.ktor.client.engine.java.*
+import io.ktor.client.plugins.*
+import io.ktor.client.plugins.contentnegotiation.*
+import io.ktor.client.request.*
+import io.ktor.client.statement.*
+import io.ktor.serialization.kotlinx.json.*
+import io.ktor.utils.io.jvm.javaio.*
+import kotlinx.coroutines.*
+import kotlinx.serialization.ExperimentalSerializationApi
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.cbor.Cbor
+import kotlinx.serialization.decodeFromByteArray
+import kotlinx.serialization.encodeToByteArray
+import java.io.File
+import java.time.Instant
+import java.time.temporal.ChronoUnit
+
+const val kCacheFolder: String = "skins"
+val kCacheFolderFile: File = File(kCacheFolder)
+const val kCacheConfigName: String = "cache.cbor"
+val kCacheConfigFile: File = File(kCacheFolder, kCacheConfigName)
+
+@Serializable
+data class CacheConfig(val lastUpdate: MutableMap<String, Long>) {
+    @OptIn(ExperimentalSerializationApi::class)
+    companion object {
+        private var config: CacheConfig = if (kCacheConfigFile.exists()) {
+            kCacheConfigFile.inputStream().use {
+                Cbor.decodeFromByteArray(it.readBytes())
+            }
+        } else {
+            kCacheConfigFile.createNewFile()
+            kCacheConfigFile.outputStream().use {
+                it.write(Cbor.encodeToByteArray(CacheConfig(mutableMapOf())))
+            }
+
+            CacheConfig(mutableMapOf())
+        }
+
+        private fun save() {
+            kCacheConfigFile.outputStream().use {
+                it.write(Cbor.encodeToByteArray(config))
+            }
+        }
+
+        fun update(uuid: String) {
+            config.lastUpdate[uuid] = Instant.now().toEpochMilli()
+            save()
+        }
+
+        fun isOutdated(uuid: String): Boolean {
+            return config.lastUpdate[uuid]?.let {
+                it < Instant.now().minus(1, ChronoUnit.DAYS).toEpochMilli()
+            } ?: true
+        }
+    }
+}
+
+val client = HttpClient(Java) {
+    install(ContentNegotiation) {
+        json()
+    }
+    defaultRequest {
+        header("User-Agent", "SteamWar/1.0")
+    }
+}
+
+suspend fun getCachedSkin(uuid: String): Pair<File, Boolean> {
+    val file = File(kCacheFolderFile, "$uuid.webp")
+    if (file.exists()) {
+        if (CacheConfig.isOutdated(uuid)) {
+            val skin = client.get("https://visage.surgeplay.com/bust/150/$uuid")
+            skin.bodyAsChannel().copyTo(file.outputStream())
+
+            CacheConfig.update(uuid)
+            return file to false
+        }
+        return file to true
+    }
+
+    withContext(Dispatchers.IO) {
+        file.createNewFile()
+    }
+    val skin = client.get("https://visage.surgeplay.com/bust/150/$uuid")
+    skin.bodyAsChannel().copyTo(file.outputStream())
+    CacheConfig.update(uuid)
+    return file to false
+}