#!/usr/bin/env python3
import sys, getopt, json

def printHelp():
    print('usage: convert.py -i <input> <output>')

def main(argv):
    fileInput = ''
    fileOutput = ''
    try:
        opts, args = getopt.getopt(argv, "hi:o:", ["ifile=", "ofile="])
    except getopt.GetoptError:
        printHelp()
        sys.exit(2)
    for opt, argumentProvided in opts:
        if opt == '-h':
            printHelp()
            sys.exit()
        if opt in ("-i", "--ifile"):
            fileInput = argumentProvided;
        if opt in ("-o", "--ofile"):
            fileOutput = argumentProvided;

    chatLogJson = json.load(open(fileInput))
    print("room name: "+chatLogJson["room_name"])

    messages = chatLogJson["messages"]
    for message in messages:
        messageContent = message.get("content")
        messageType = messageContent.get("msgtype")
        if messageType == "m.text":
            print(messageContent.get("body"))
    return 0


if __name__ == "__main__":
    main(sys.argv[1:])