From 285167b255722f52abeb0b10b4b8a5f983983ae2 Mon Sep 17 00:00:00 2001
From: Tau <tau@nowhere>
Date: Mon, 26 Nov 2018 21:14:59 -0500
Subject: [PATCH] Implement aimedb log message

---
 src/aimedb/cmd.js   | 44 ++++++++++++++++++++++++++++++++++++++------
 src/aimedb/index.js |  6 ++++++
 2 files changed, 44 insertions(+), 6 deletions(-)

diff --git a/src/aimedb/cmd.js b/src/aimedb/cmd.js
index 1a18b2b..af07f0b 100644
--- a/src/aimedb/cmd.js
+++ b/src/aimedb/cmd.js
@@ -9,17 +9,36 @@ class Decoder extends Transform {
     })
   }
 
-  static ident(payload) {
-    const gameId    = payload.toString('ascii', 0x000A, 0x000E)
-    const keychipId = payload.toString('ascii', 0x0014, 0x001F)
+  static ident(chunk) {
+    const gameId    = chunk.toString('ascii', 0x000A, 0x000E)
+    const keychipId = chunk.toString('ascii', 0x0014, 0x001F)
 
     return { gameId, keychipId }
   }
 
-  static cardId(payload) {
-    const luid = payload.slice(0x0020, 0x002A)
+  static cardId(chunk) {
+    const luid = chunk.slice(0x0020, 0x002A)
 
-    return { luid, ...Decoder.ident(payload) }
+    return { luid, ...Decoder.ident(chunk) }
+  }
+
+  static log(chunk) {
+    // idk what any of this stuff means yet
+    // field20 and field28 appear to be an aime id but that is all.
+
+    const field20 = chunk.readUInt32LE(0x20)
+    const field24 = chunk.readUInt32LE(0x24)
+    const field28 = chunk.readUInt32LE(0x28)
+    const field2C = chunk.readUInt32LE(0x2C)
+    const field30 = chunk.readUInt32LE(0x30)
+    const field34 = chunk.readUInt32LE(0x34)
+    const field38 = chunk.readUInt32LE(0x38)
+    const field3C = chunk.readUInt32LE(0x3C)
+
+    return {
+      field20, field24, field28, field2C, field30, field34, field38, field3C,
+      ...Decoder.ident(chunk)
+    }
   }
 
   _transform(chunk, encoding, callback) {
@@ -32,6 +51,12 @@ class Decoder extends Transform {
           ...Decoder.cardId(chunk),
         })
 
+      case 0x0009:
+        return callback(null, {
+          cmd: 'log',
+          ...Decoder.log(chunk),
+        })
+
       case 0x000B:
         return callback(null, {
           cmd: 'campaign',
@@ -127,6 +152,13 @@ class Encoder extends Transform {
 
         break
 
+      case 'log':
+        buf = Encoder.init(0x0020)
+        buf.writeUInt16LE(0x000A, 0x0004) // cmd code
+        buf.writeUInt16LE(chunk.status, 0x0008)
+
+        break
+
       default:
         return callback(new Error(`Unimplemented response: ${cmd}`))
     }
diff --git a/src/aimedb/index.js b/src/aimedb/index.js
index 5c61d75..381c13e 100644
--- a/src/aimedb/index.js
+++ b/src/aimedb/index.js
@@ -38,6 +38,12 @@ async function aimedb(socket) {
 
           break
 
+        case 'log':
+          console.log('Aimedb: Log message')
+          output.write({ cmd, status: 1 })
+
+          break
+
         case 'goodbye':
           console.log('Aimedb: Goodbye')