Started rewriting JSON task to custom binary structure. Parsed and serialized task object into seq[byte]

src/common/serialize.nim

@@ -0,0 +1,66 @@
+import streams, strutils
+import ./types
+
+type 
+    Packer* = ref object 
+        headerStream: StringStream
+        payloadStream: StringStream 
+
+proc initTaskPacker*(): Packer = 
+    result = new Packer 
+    result.headerStream = newStringStream()
+    result.payloadStream = newStringStream() 
+
+proc addToHeader*[T: uint8 | uint16 | uint32 | uint64](packer: Packer, value: T): Packer {.discardable.} =
+    packer.headerStream.write(value)
+    return packer 
+
+proc addToPayload*[T: uint8 | uint16 | uint32 | uint64](packer: Packer, value: T): Packer {.discardable.} =
+    packer.payloadStream.write(value)
+    return packer 
+
+proc addDataToHeader*(packer: Packer, data: openArray[byte]): Packer {.discardable.} = 
+    packer.headerStream.writeData(data[0].unsafeAddr, data.len)
+    return packer
+
+proc addDataToPayload*(packer: Packer, data: openArray[byte]): Packer {.discardable.} = 
+    packer.payloadStream.writeData(data[0].unsafeAddr, data.len)
+    return packer
+
+proc addArgument*(packer: Packer, arg: TaskArg): Packer {.discardable.} = 
+    
+    if arg.data.len <= 0: 
+        # Optional argument was passed as "", ignore
+        return
+
+    packer.addToPayload(arg.argType)
+
+    case arg.argType: 
+    of cast[uint8](STRING), cast[uint8](BINARY): 
+        # Add length for variable-length data types
+        packer.addToPayload(cast[uint32](arg.data.len)) 
+        packer.addDataToPayload(arg.data)
+    else: 
+        packer.addDataToPayload(arg.data)
+    return packer
+
+proc packPayload*(packer: Packer): seq[byte] = 
+    packer.payloadStream.setPosition(0) 
+    let data = packer.payloadStream.readAll() 
+    
+    result = newSeq[byte](data.len)
+    for i, c in data:
+        result[i] = byte(c.ord)
+    
+    packer.payloadStream.setPosition(0) 
+
+proc packHeader*(packer: Packer): seq[byte] = 
+    packer.headerStream.setPosition(0) 
+    let data = packer.headerStream.readAll() 
+    
+    # Convert string to seq[byte]
+    result = newSeq[byte](data.len)
+    for i, c in data:
+        result[i] = byte(c.ord)
+    
+    packer.headerStream.setPosition(0)