"""
sender.py: This is a python simpl text-based sender.
Usage: python3 sender.py myName receiverName
"""

# import required modules
import sys
import csimpl

# initialize necessary variables
sName = sys.argv[1]
rName = sys.argv[2]

# create an instance of Simpl
nee = csimpl.Simpl(sName, 1024)
if (nee == -1):
        print ("name attach error-", whatsMyError())
        sys.exit(-1)
# name locate the receiver program
receiverId = nee.nameLocate(rName)
if receiverId == -1:
    print ("name locate error-",  nee.whatsMyError())
    sys.exit(-1)

while True:
    try:
         line = input("-> ")
    except EOFError:
         break
    else:
         if line[0] == '?':
               print("enter s n1,n2,n3 to get sum")
               print("enter q to quit")
         if line[0] == 's':
               ss=line.split()
               s=ss[1].split(",")
               val1=int(s[0])
               val2=int(s[1])
               val3=int(s[2])
               print("var=%d %d %d" %(val1, val2, val3))

# compose the message you wish
# to send based on the value of
# the token
               inToken=10
               print ("token = %d" %inToken)
               nee.packMsg(nee.BIN, "iiii",inToken,val1,val2,val3)

# send the message
               retVal = nee.send(receiverId)
               if retVal == -1:
                    print ("send error-",nee.whatsMyError())
                    sys.exit(-1)

# unpack the reply message
               outToken, sum = nee.unpackMsg(nee.BIN, "ii")
               if outToken == 10:
                    print ("reply token=%d sum=%d" %(outToken,sum) )
               else:
                    print ("reply token=%d" %outToken )

         elif line[0] == "q":
              break

print("done")