[F] Fix DFI response compat

src/main/java/icu/samnyan/aqua/sega/allnet/AllNet.kt

@@ -2,7 +2,7 @@ package icu.samnyan.aqua.sega.allnet
 
 import ext.*
 import icu.samnyan.aqua.net.db.AquaNetUserRepo
-import icu.samnyan.aqua.sega.util.AllNetBillingDecoder.decodeAllNet
+import icu.samnyan.aqua.sega.allnet.AllNetBillingDecoder.decodeAllNet
 import icu.samnyan.aqua.sega.util.AquaConst
 import jakarta.servlet.http.HttpServletRequest
 import jakarta.servlet.http.HttpServletResponse

src/main/java/icu/samnyan/aqua/sega/allnet/AllNetBillingDecoder.kt

@@ -0,0 +1,50 @@
+package icu.samnyan.aqua.sega.allnet
+
+import ext.bodyString
+import ext.header
+import icu.samnyan.aqua.sega.util.ZLib
+import java.net.http.HttpResponse
+import java.util.*
+import kotlin.text.Charsets.UTF_8
+
+object AllNetBillingDecoder {
+    fun String.urlToMap() = split("&").map { it.split("=") }.filter { it.size == 2 }.associate { it[0] to it[1] }
+
+    /**
+     * Decode the input byte array from Base64 MIME encoding and decompress the decoded byte array
+     */
+    fun decode(src: ByteArray, base64: Boolean, nowrap: Boolean): Map<String, String> {
+        // Decode the input byte array from Base64 MIME encoding
+        val bytes = if (!base64) src else Base64.getMimeDecoder().decode(src)
+
+        // Decompress the decoded byte array
+        val output = ZLib.decompress(bytes, nowrap).toString(UTF_8).trim()
+
+        // Split the string by '&' symbol to separate key-value pairs
+        return output.urlToMap()
+    }
+
+    fun encode(src: Map<String, String>, base64: Boolean): ByteArray {
+        // Join the key-value pairs with '&' symbol
+        val output = src.map { "${it.key}=${it.value}" }.joinToString("&")
+
+        // Compress the joined string
+        val bytes = ZLib.compress(output.toByteArray(UTF_8))
+
+        // Encode the compressed byte array to Base64 MIME encoding
+        return if (!base64) bytes else Base64.getEncoder().encode(bytes)
+    }
+
+    @JvmStatic
+    fun decodeAllNet(src: ByteArray) = decode(src, base64 = true, nowrap = false)
+    fun encodeAllNet(src: Map<String, String>) = encode(src, base64 = true)
+
+    @JvmStatic
+    fun decodeBilling(src: ByteArray) = decode(src, base64 = false, nowrap = true)
+
+    fun HttpResponse<ByteArray>.decodeAllNetResp() =
+        if (header("Pragma") == "DFI") decodeAllNet(body())
+        else bodyString()?.urlToMap()
+}
+
+