#!/usr/bin/env python3

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import argparse
import os
import subprocess
import sys

def send_headers(version, message_id, simulate):
    receiver = 'development@qt-project.org'
    subject = 'Qt ' + version + ' header diff: '
    print("Header diff:", subject)

    for diff in os.listdir('.'):
        if diff.endswith('.diff'):
            print('Sending: ', diff)
            s = subject + diff
            h1 = 'In-Reply-To:<' + message_id + '>'
            h2 = 'References:<' + message_id + '>'
            args = ['kmail', '--subject', s, '--attach', diff, '--header', h1, '--header', h2, receiver]
            if simulate:
                print("Simulate:", " ".join(args))
            else:
                subprocess.check_call(args)


if __name__ == "__main__":
    parser = argparse.ArgumentParser(prog="send_header_diff_kmail")

    parser.add_argument('--message', type=str, dest="message_id", required=True,
                        help='The original Message-ID (need to extract this from first mail sent, e.g. 2117407.DiL0mZzDaf@anton')
    parser.add_argument("--version", type=str, dest="version", required=True,
                        help="Version, for example 5.6.0")
    parser.add_argument("--simulate", dest="simulate", action="store_true",
                        help="Only print what would be done without creating the mails")

    args = parser.parse_args(sys.argv[1:])
    send_headers(version=args.version, message_id=args.message_id, simulate=args.simulate)