#! /usr/bin/env python
# (c) Copyright 2009-2010. CodeWeavers, Inc.

import os

# Portable which(1) implementation
def which(path, app):
    """Looks for an executable in the specified directory list.

    path is an os.pathsep-separated list of directories and app is the
    executable name. If app contains a path separator then path is ignored.
    If the file is not found, then None is returned.
    """
    if os.path.isabs(app):
        if os.path.isfile(app) and os.access(app, os.X_OK):
            return app
    elif os.sep in app or (os.altsep and os.altsep in app):
        app_path = os.path.join(os.getcwd(), app)
        if os.path.isfile(app_path) and os.access(app_path, os.X_OK):
            return app_path
    else:
        for directory in path.split(os.pathsep):
            if directory == "":
                continue
            app_path = os.path.join(directory, app)
            if os.path.isfile(app_path) and os.access(app_path, os.X_OK):
                return app_path
    return None

import sys
def locate_cx_root():
    """Locate where CrossOver is installed.

    We start by locating our own python script file and walking back up the
    path, traversing symbolic links on the way. Then we verify what we have
    found the right directory by checking for the presence of the cxmenu
    script.
    """
    # pylint: disable-msg=I0011,W0601,W0603
    global CX_ROOT
    if "CX_DEVELOP_ROOT" in os.environ:
        CX_ROOT = os.environ["CX_DEVELOP_ROOT"]
        return

    # figure out argv0
    argv0 = which(os.environ["PATH"], sys.argv[0])
    if not argv0:
        argv0 = sys.argv[0]
        if not os.path.isabs(argv0):
            argv0 = os.path.join(os.getcwd(), argv0)

    # traverse the symbolic links
    dir0 = os.path.dirname(argv0)
    while True:
        if dir0.endswith("/lib"):
            bindir = dir0[0:-3] + "bin"
        else:
            bindir = dir0
        landmark = os.path.join(bindir, "cxmenu")
        if os.path.isfile(landmark):
            break
        if not os.path.islink(argv0):
            break
        argv0 = os.readlink(argv0)
        if not os.path.isabs(argv0):
            argv0 = os.path.join(dir0, argv0)
        dir0 = os.path.dirname(argv0)

    # compute CX_ROOT
    CX_ROOT = os.path.dirname(os.path.normpath(bindir))

    # check CX_ROOT
    landmark = os.path.join(CX_ROOT, "bin", "cxmenu")
    if not os.path.isfile(landmark) or not os.access(landmark, os.X_OK):
        sys.stderr.write("%s:error: could not find CrossOver in '%s'\n" % (os.path.dirname(sys.argv[0]), CX_ROOT))
        sys.exit(1)

    sys.path.append(os.path.join(CX_ROOT, "lib", "python"))

locate_cx_root()
import cxutils
cxutils.CX_ROOT = CX_ROOT


import checkgtk
checkgtk.check_gtk()

import gtk

import cxopt

import installwizard
import cxguitools
# This only looks like it's doing nothing
# pylint: disable-msg=W0611
import cheatconsole


def main():
    # Parse the command line options
    opt_parser = cxopt.Parser(usage="%prog [--bottle BOTTLE] [--tiefile TIEFILE] [--c4pfile TIEFILE] [--profileid PROFILEID] [--installersource INSTALLERSOURCE] [--help]",
                              description="Starts the CrossOver Windows application installation wizard.")
    opt_parser.add_option("--bottle", dest="bottle", help="Use the specified bottle and $CX_BOTTLE otherwise")
    # Keep --c4pfile for backward compatibility
    opt_parser.add_option("--tiefile", "--c4pfile", dest="tiefile", help="Load the specified additional .tie file")
    opt_parser.add_option("--profileid", dest="profileid", help="Select the specified profile for installation")
    opt_parser.add_option("--installersource", dest="installersource", help="Specifies the path to the installer file or directory")
    (options, args) = opt_parser.parse_args()

    # Do more checks and provide defaults
    if options.bottle is None and 'CX_BOTTLE' in os.environ:
        options.bottle = os.environ['CX_BOTTLE']
    if options.tiefile is None and args and (args[0].endswith('.tie') or args[0].endswith('.gz') or args[0].endswith('c4p')):
        options.tiefile = args[0]
        args = args[1:]
    if options.installersource is not None:
        options.installersource = os.path.abspath(options.installersource)
    if args:
        opt_parser.error("unexpected argument '%s'" % args[0])

    cxguitools.set_default_icon()
    # give the wizard a name so it can be accessed from the console as __main__.wizard
    # disable-msg=W0601
    global wizard
    wizard = installwizard.InstallerAssistantController(bottle=options.bottle, c4pfile=options.tiefile, profileid=options.profileid, installersource=options.installersource)
    cxguitools.warn_if_root()
    gtk.main()

if __name__ == "__main__":
    sys.exit(main())