#!/usr/bin/python2.7
#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License (the "License").
# You may not use this file except in compliance with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
#
# CDDL HEADER END
#
# Copyright (c) 2011, 2014, Oracle and/or its affiliates. All rights reserved.
#
#
# incorporator - an utility to incorporate packages in a repo
#

import subprocess
import json
import sys
import getopt
import re
import os.path

Werror = False	# set to true to exit with any warning

def warning(msg):
    if Werror == True:
        print >>sys.stderr, "ERROR: %s" % msg
        sys.exit(1)
    else:
        print >>sys.stderr, "WARNING: %s" % msg

class Incorporation(object):
    name = None
    version = '5.12'
    packages = {}

    def __init__(self, name, version):
        self.name = name
        self.version = version
        self.packages = {}

    def __package_to_str(self, name, version):
        # strip the :timestamp from the version string
        version = version.split(':', 1)[0]
        # strip the ,{build-release} from the version string
        version = re.sub(",[\d\.]+", "", version) 

        return "depend fmri=%s@%s facet.version-lock.%s=true type=incorporate" % (name, version, name)

    def add_package(self, name, version):
        self.packages[name] = version

    def __str__(self):
        result = """
set name=pkg.fmri value=pkg:/%s@%s
set name=info.classification value="org.opensolaris.category.2008:Meta Packages/Incorporations"
set name=org.opensolaris.consolidation value=userland
set name=pkg.depend.install-hold value=core-os.userland
set name=pkg.summary value="userland consolidation incorporation (%s)"
set name=pkg.description value="This incorporation constrains packages from the userland consolidation"
""" % (self.name, self.version, self.name)

        names = self.packages.keys()
        names.sort()
        for name in names:
            result += (self.__package_to_str(name, self.packages[name]) + '\n')

        return result

#
# This should probably use the pkg APIs at some point, but this appears to be
# a stable and less complicated interface to gathering information from the
# manifests in the package repo.
#
def get_incorporations(repository, publisher, inc_version='5.12'):
    tmp = subprocess.Popen(["/usr/bin/pkgrepo", "list", "-F", "json",
                                                        "-s", repository,
                                                        "-p", publisher],
                           stdout=subprocess.PIPE)
    incorporations = {}
    packages = json.load(tmp.stdout)

    # Check for multiple versions of packages in the repo, but keep track of
    # the latest one.
    versions = {}
    for package in packages:
        pkg_name = package['name']
        pkg_version = package['version']

        if pkg_name in versions:
            warning("%s is in the repo at multiple versions (%s, %s)" % (pkg_name, pkg_version, versions[pkg_name]))
            pkg_version = max(pkg_version, versions[pkg_name])
        versions[pkg_name] = pkg_version

    for package in packages:
        pkg_name = package['name']
        pkg_version = package['version']

        # skip older packages and those that don't want to be incorporated
        if 'pkg.tmp.incorporate' not in package or pkg_version != versions[pkg_name]:
            continue

        # a dict inside a list inside a dict
        incorporate = package['pkg.tmp.incorporate'][0]['value']
        
        for inc_name in incorporate:
            # if we haven't started to build this incorporation, create one.
            if inc_name not in incorporations:
                incorporations[inc_name] = Incorporation(inc_name, inc_version)
            # find the incorporation and add the package
            tmp = incorporations[inc_name]
            tmp.add_package(pkg_name, pkg_version)
    return incorporations

def main_func():
    global Werror

    try: 
        opts, pargs = getopt.getopt(sys.argv[1:], "c:s:p:v:d:w",
                                    ["repository=", "publisher=", "version=",
                                     "consolidation=", "destdir=", "Werror"])
    except getopt.GetoptError, e:
        usage(_("illegal option: %s") % e.opt)

    repository = None
    publisher = None
    version = None
    destdir = None
    consolidation = None

    for opt, arg in opts:
        if opt in ("-s", "--repository"):
            repository = arg
        elif opt in ("-p", "--publisher"):
            publisher = arg
        elif opt in ("-v", "--version"):
            version = arg
        elif opt in ("-d", "--destdir"):
            destdir = arg
        elif opt in ("-c", "--consolidation"):
            consolidation = arg
        elif opt in ("-w", "--Werror"):
            Werror = True

    incorporations = get_incorporations(repository, publisher, version)

    for incorporation_name in incorporations.keys():
        filename = ''
        if destdir != None:
            filename = destdir + '/'
        filename += os.path.basename(incorporation_name) + '.p5m'

        print("Writing %s manifest to %s" % (incorporation_name, filename))
        fd = open(filename, "w+")
        fd.write(str(incorporations[incorporation_name]))
        fd.close()

if __name__ == "__main__":
    main_func()