#!/usr/bin/env python3

import argparse
import sys
import logging
import json
import csv

if __name__ == '__main__':

    # Parsing arguments
    log = logging.getLogger('json_to_csv')
    parser = argparse.ArgumentParser(
        description="TODO")
    parser.add_argument(
        # '-i', '--input', type=argparse.FileType('rb'), default=sys.stdin.buffer,
        '-i', '--input', type=argparse.FileType('r'), default=sys.stdin,
        help="TODO")
    parser.add_argument(
        # '-i', '--output', type=argparse.FileType('wb'), default=sys.stdout.buffer,
        '-o', '--output', type=argparse.FileType('w'), default=sys.stdout,
        help="TODO")
    args = parser.parse_args()

    writer = csv.writer(args.output)
    for line in args.input:
        data = json.loads(line)
        try:
            writer.writerow([
                data['type'][0], # First letter, will need to do something special for AAAA
                data['timestamp'],
                data['name'],
                data['value']])
        except (KeyError, json.decoder.JSONDecodeError):
            log.error('Could not parse line: %s', line)
            pass