新增get_file方法，主要解决使用反向websocket的时候获取文件麻烦的问题，目前仅支持base64的type返回，未来将支持更多模式，测试后将发布至文档

xposed/src/main/java/moe/fuqiuluo/shamrock/remote/action/handlers/GetFile.kt

@@ -0,0 +1,45 @@
+package moe.fuqiuluo.shamrock.remote.action.handlers
+
+import kotlinx.serialization.json.JsonElement
+import moe.fuqiuluo.shamrock.remote.action.ActionSession
+import moe.fuqiuluo.shamrock.remote.action.IActionHandler
+import moe.fuqiuluo.shamrock.remote.service.data.OutResource
+import moe.fuqiuluo.shamrock.remote.service.data.OutResourceByBase64
+import moe.fuqiuluo.shamrock.tools.EmptyJsonString
+import moe.fuqiuluo.shamrock.utils.AudioUtils
+import moe.fuqiuluo.shamrock.utils.FileUtils
+import moe.fuqiuluo.symbols.OneBotHandler
+import java.util.Base64
+
+@OneBotHandler("get_file") internal object GetFile : IActionHandler() {
+    override suspend fun internalHandle(session: ActionSession): String {
+        val file = session.getString("file")
+            .replace(regex = "[{}\\-]".toRegex(), replacement = "")
+            .replace(" ", "")
+            .split(".")[0].lowercase()
+        val fileType = session.getString("file_type")
+        return invoke(file, fileType, session.echo)
+    }
+
+    operator fun invoke(file: String, fileType: String, echo: JsonElement = EmptyJsonString): String {
+        val targetFile = FileUtils.getFileByMd5(file)
+        return if (targetFile.exists()) {
+            when (fileType) {
+                "base64" -> ok(
+                    OutResourceByBase64(
+                        "/res/${targetFile.nameWithoutExtension}",
+                        Base64.getEncoder()
+                            .encodeToString(targetFile.readBytes()),
+                    ), echo
+                )
+
+                else -> error("only support base64", echo)
+            }
+
+        } else {
+            error("not found record file from md5", echo)
+        }
+    }
+
+    override val requiredParams: Array<String> = arrayOf("file", "file_type")
+}

xposed/src/main/java/moe/fuqiuluo/shamrock/remote/service/data/ResourceData.kt

@@ -1,9 +1,15 @@
 package moe.fuqiuluo.shamrock.remote.service.data
 
 import kotlinx.serialization.Serializable
+import java.util.Base64
 
 @Serializable
 internal data class OutResource(
     val file: String,
     val url: String
+)
+
+internal data class OutResourceByBase64(
+    val file: String,
+    val base64String: String,
 )