import os
import shutil
import logging
import errno
import sys

import wizard
from wizard import command, deploy, shell, util

def main(argv, baton):
    options, args = parse_args(argv, baton)
    # XXX: do something smart if -scripts is not at the end
    app = args[0]
    dir = args[1]
    if os.path.exists(dir):
        raise DirectoryExistsError
    appname, _, version = app.partition('-')
    application = deploy.applications()[appname]
    sh = shell.Shell()
    sh.call("git", "clone", "-q", "--shared", application.repository(options.srv_path), dir)
    with util.ChangeDirectory(dir):
        if version:
            sh.call("git", "reset", "-q", "--hard", app)
        # this command's stdin should be hooked up to ours
        try:
            configure_args = args[2:] + command.make_base_args(options)
            sh.call("wizard", "configure", *configure_args, interactive=True)
        except shell.PythonCallError:
            sys.exit(1)

def parse_args(argv, baton):
    usage = """usage: %prog install [APP [DIR -- [SETUPARGS]]]

Autoinstalls the application APP in the directory
DIR.  SETUPARGS are arguments that are passed to
'wizard configure', see 'wizard configure APP --help'
for possible arguments.

WARNING: This command's API may change."""
    parser = command.WizardOptionParser(usage)
    baton.push(parser, "srv_path")
    options, args = parser.parse_all(argv)
    # XXX: in the future, not specifying stuff is supported, since
    # we'll prompt for it interactively
    if not args:
        parser.error("must specify application and directory")
    elif len(args) == 1:
        parser.error("must specify directory")
    return options, args

class DirectoryExistsError(wizard.Error):
    def __str__(self):
        return "Directory already exists"