#!/usr/bin/python

# Open an interactive launchpadlib Python shell.
# It supports all known LP service instances and API versions. The login
# can optionally happen anonymously.

# Author: Martin Pitt <martin.pitt@ubuntu.com>
# Copyright: (C) 2010 Canonical Ltd.
#
# This package is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, at version 2.
# 
# This package is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

import sys
import code
from optparse import OptionParser

from launchpadlib.launchpad import Launchpad
from launchpadlib.uris import lookup_service_root

instance = 'edge'
valid_api_versions = ('beta', '1.0', 'devel')
api_version = '1.0'

usage = 'Usage: %prog [-a] [instance] [LP API version]'
optParser = OptionParser(usage)
optParser.add_option('-a', action='store_true',
        dest='anonymous', default=False,
        help='Login anonymously into LP.')

(options, args) = optParser.parse_args()

if len(args) >= 1:
    try:
        instance = lookup_service_root(args[0])
    except ValueError, err:
        print 'E: %s' % (err)
        print 'I: Falling back to "edge".'

if len(args) >= 2:
    if args[1] in valid_api_versions:
        api_version = args[1]
    else:
        print 'E: "%s" is not a valid LP API version.' % (args[1])
        print 'I: Falling back to "1.0".'

if options.anonymous:
    lp = Launchpad.login_anonymously('udt-lp-shell', instance, version=api_version)
    banner = 'Connected anonymously to LP service "%s" with API version "%s":' % (
            instance, api_version)
else:
    lp = Launchpad.login_with('udt-lp-shell', instance, version=api_version)
    banner = 'Connected to LP service "%s" with API version "%s":' % (
            instance, api_version)

banner += '\nNote: LP can be accessed through the "lp" object.'

class CompleterConsole(code.InteractiveConsole):
    def __init__(self):
        local = {'lp': lp}
        code.InteractiveConsole.__init__(self,
                locals=local)
        try:
            import readline
        except ImportError:
            print 'I: readline module not available.'
        else:
            import rlcompleter
            readline.parse_and_bind("tab: complete")

# Disable default apport hook, as lp-shell is intended for interactive use
# and thus exceptions often bubble up to the top level.
sys.excepthook = sys.__excepthook__

console = CompleterConsole()
console.interact(banner)