#!/usr/bin/python

import argparse
import os
import re
import subprocess
import sys

import common

from devbot import config

GIT_CONFIG_SETUP = "sugar-build.send-patches.setup"

def get_git_config(name, is_global=False):
    args = ["git", "config"]

    if is_global:
        args.append("--global")

    args.append(name)

    try:
        return subprocess.check_output(args)
    except subprocess.CalledProcessError:
        return None

def set_git_config(name, value):
    return subprocess.check_output(["git", "config", name, value])

def unset_git_config(name):
    try:
        subprocess.check_output(["git", "config", "--unset", name])
        return True
    except subprocess.CalledProcessError:
        return False

def get_from():
    name = get_git_config("user.name", is_global=True)
    email = get_git_config("user.email", is_global=True)

    if not name or not email:
        print "Please configure your name and email\n\n" \
              "git config --global user.name Your Name\n" \
              "git config --global user.email youremail@example.com"
        sys.exit(1)

    return "%s <%s>" % (name, email)

def get_module():
    for line in open("configure.ac"):
        m = re.match("AC_INIT\((.+)\)", line)
        if m:
            return m.group(1).split(",")[-1][1:-1]    

def setup():
    print "Choose how to send email \n\n" \
          "1 Google account\n" \
          "2 Sugar Labs shell account\n" \
          "3 System sendmail"

    choice = None

    while choice not in ["1", "2", "3"]:
        choice = raw_input("# ")

    if choice == "1":
        print "\nEnter your user name"
        smtpuser = raw_input("# ")

        set_git_config("sendemail.smtpencryption", "tls")
        set_git_config("sendemail.smtpserver", "smtp.gmail.com")
        set_git_config("sendemail.smtpserverport", "587")
        set_git_config("sendemail.smtpuser", smtpuser)
    elif choice == "2":
        print "\nEnter your user name"
        smtpuser = raw_input("# ")

        set_git_config("sendemail.smtpencryption", "tls")
        set_git_config("sendemail.smtpserver", "smtp.sugarlabs.org")
        set_git_config("sendemail.smtpserverport", "587")
        set_git_config("sendemail.smtpuser", smtpuser)
    elif choice == "3":
        unset_git_config("sendemail.smtpencryption")
        unset_git_config("sendemail.smtpserver")
        unset_git_config("sendemail.smtpserverport")
        unset_git_config("sendemail.smtpuser")

    set_git_config(GIT_CONFIG_SETUP, "true")

common.setup()

if os.path.dirname(os.getcwd()) != config.source_dir:
    print "The command must be run inside one of the source modules."
    sys.exit(1)

parser = argparse.ArgumentParser()
parser.add_argument("--setup", action="store_true",
                    help="interactive configuration")
parser.add_argument('rev_list', nargs='?', default='origin')

args = parser.parse_args()

if not get_git_config(GIT_CONFIG_SETUP) or args.setup:
    setup()

subprocess.call(["git", "send-email",
                 "-from", get_from(),
                 "-to", "sugar-devel <sugar-devel@lists.sugarlabs.org>",
                 "--subject-prefix", "PATCH %s" % get_module(),
                 args.rev_list])