#!/usr/bin/python3

import argparse
import subprocess
import util.color_io as color_io
import sys

parser = argparse.ArgumentParser(prog='Site Generator', description='Apache/Nginx Site Generator',
                                 epilog='Currently Only For Nginx')

parse_type_group = parser.add_mutually_exclusive_group()

parse_type_group.add_argument('-p', '--proxy', action='store_true', help="Generate a site which will act as a proxy")
parse_type_group.add_argument('-r', '--root', action='store_true',
                              help="Generate a site which serves from a document root")

parser.add_argument('-i', '--install', default=None, const="/etc/nginx/sites-available/",
                    help="Set the install location for the generated config, defaults to /etc/nginx/sites-available/",
                    nargs="?")
parser.add_argument('-l', '--log', default="/var/log/nginx/",
                    help="Set the default log location for the generated config, defaults to /var/log/nginx/")
parser.add_argument('-s', '--symb', default=None, const="/etc/nginx/sites-enabled/", nargs="?",
                    help="Set the location for the symbolic link to enable the config")
parser.add_argument("--no-ssl", action="store_const", default="ssl", const="", help="Disable SSL", dest="ssl")
parser.add_argument("--http", default="", required=False, help="Provide HTTP version")

args = parser.parse_args()

install_location = args.install
link_location = args.symb
log_location = args.log

if install_location is None:
    print("Hint: you can provide install location or use the default (nginx dir) via command-line args")
    install_location = color_io.input_print("Enter install location (default: stdout):", "stdout")
    if install_location.lower() == "stdout":
        install_location = None

if install_location is not None and not install_location.endswith('/'):
    install_location = install_location + "/"
if not log_location.endswith('/'):
    log_location = log_location + "/"

site = {
    'name': color_io.input_print("Enter site address (eg: 'tpgc.me')")
}


def get_config_name():
    return site['name']


def get_config_path():
    return install_location + get_config_name()


def create_file():
    if install_location is None:
        return sys.stdout
    return open(get_config_path(), 'a')


def create_nginx():
    f = create_file()
    f.write("#--- --- --- {Begin Site " + site['name'] + "} --- --- ---#\n")
    f.write("server {\n")
    port = "443"
    if len(args.ssl) == 0:
        port = "80"
    f.write("   listen " + port + " " + args.ssl + " " + args.http + ";\n\n")
    f.write("	server_name " + site['name'] + ";\n\n")
    f.write("	access_log " + log_location + site['name'] + "-access.log;\n")
    f.write("	error_log " + log_location + site['name'] + "-error.log error;\n\n")
    return f


def end_nginx(f):
    f.write("}\n")
    f.write("#--- --- --- {End Site " + site['name'] + "} --- --- ---#\n\n")
    if f is not sys.stdout:
        f.close()
    if link_location is not None:
        subprocess.run(["ln", "-s", get_config_path(), link_location + get_config_name()])


def write_location(f, loc, mod):
    f.write("	location " + loc + " {\n")
    for m in mod:
        f.write("		" + m + ";\n")
    f.write("	}\n\n")


def create_proxy():
    color_io.green_print("Creating proxy site")
    site['location'] = color_io.input_print("Enter site location (default: /)", "/")
    site['address'] = color_io.input_print("Enter address to proxy to (eg: http://127.0.0.1:)")
    f = create_nginx()
    write_location(f, site['location'], ["proxy_pass " + site['address'],
                                         "proxy_set_header Upgrade $http_upgrade",
                                         'proxy_set_header Connection "Upgrade"',
                                         "proxy_set_header Host $host"])
    end_nginx(f)


def create_root():
    color_io.green_print("Creating root site")
    site['path'] = color_io.input_print("Enter site files path")
    f = create_nginx()
    f.write("	root " + site['path'] + ";\n\n")
    f.write("	include php-fpm;\n\n")
    end_nginx(f)


# Process user input based on args provided
def execute_input():
    if args.proxy:
        create_proxy()
    elif args.root:
        create_root()
    else:
        create_proxy()


if __name__ == "__main__":
    execute_input()