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#!/usr/bin/env python3

"""
Stand-alone script to manage
the GNU Taler bank.
"""

import argparse
import sys
import os
import site

os.environ.setdefault("DJANGO_SETTINGS_MODULE", "talerbank.settings")
os.environ.setdefault("TALER_PREFIX", "@prefix@")
site.addsitedir("%s/lib/python%d.%d/site-packages" % (
    "@prefix@", 
    sys.version_info.major,
    sys.version_info.minor))

import logging
logger = logging.getLogger(__name__)


def handle_django(args):
    import django
    django.setup()
    from django.core.management import execute_from_command_line
    execute_from_command_line([sys.argv[0] + " django"] + args.command)


def handle_serve_http(args):
    import django
    django.setup()
    from django.core.management import call_command
    call_command('migrate')
    call_command('provide_accounts')
    call_command('check')
    tc = TalerConfig.from_file(os.environ.get("TALER_CONFIG_FILE"))
    port = args.port
    if port is None:
        port = tc["bank"]["http_port"].value_int(required=True)
    httpspec = ":%d" % (port,)
    os.execlp("uwsgi", "uwsgi",
            "--master",
            "--die-on-term",
            "--http", httpspec,
            "--wsgi-file", "@prefix@/share/taler/bank.wsgi")

def handle_serve_uwsgi(args):
    import django
    django.setup()
    from django.core.management import call_command
    call_command('migrate')
    call_command('provide_accounts')
    call_command('check')
    tc = TalerConfig.from_file(os.environ.get("TALER_CONFIG_FILE"))
    port = args.port
    if port is None:
        port = tc["bank"]["uwsgi_port"].value_int(required=True)
    spec = ":%d" % (port,)
    os.execlp("uwsgi", "uwsgi",
            "--master",
            "--die-on-term",
            "--socket", spec,
            "--wsgi-file", "@prefix@/share/taler/bank.wsgi")

def handle_sampledata(args):
    import django
    django.setup()
    from django.core.management import call_command
    call_command('sample_donations')

def handle_config(args):
    from talerbank.talerconfig import TalerConfig
    tc = TalerConfig.from_file(args.config)
    tc.dump()


parser = argparse.ArgumentParser()
parser.set_defaults(func=None)
parser.add_argument('--config', '-c', help="configuration file to use", metavar="CONFIG", type=str, dest="config", default=None)
sub = parser.add_subparsers()

p = sub.add_parser('django', help="Run django-admin command")
p.add_argument("command", nargs=argparse.REMAINDER)
p.set_defaults(func=handle_django)

p = sub.add_parser('sampledata', help="Put sample data into the db")
p.set_defaults(func=handle_sampledata)

p = sub.add_parser('serve-http', help="Serve bank over HTTP")
p.add_argument("--port", "-p", dest="port", type=int, default=8001, metavar="PORT")
p.set_defaults(func=handle_serve_http)

p = sub.add_parser('serve-uwsgi', help="Serve bank over UWSGI")
p.add_argument("--port", "-p", dest="port", type=int, default=8000, metavar="PORT")
p.set_defaults(func=handle_serve_uwsgi)

p = sub.add_parser('config', help="show config")
p.set_defaults(func=handle_config)


args = parser.parse_args()
if getattr(args, 'func', None) is None:
    parser.print_help()
    sys.exit(1)

if args.config is not None:
    os.environ["TALER_CONFIG_FILE"] = args.config

args.func(args)