# Copyright (C) 2008 Red Hat, Inc.
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the
# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
# Boston, MA 02111-1307, USA.

import os
import zipfile
import tarfile
import shutil
import subprocess
import re
import gettext
from optparse import OptionParser
import logging
from fnmatch import fnmatch

from sugar import env
from sugar.bundle.activitybundle import ActivityBundle

def list_files(base_dir, ignore_dirs=None, ignore_files=None):
    result = []

    for root, dirs, files in os.walk(base_dir):
        if ignore_files:
            for pattern in ignore_files:
                files = [f for f in files if not fnmatch(f, pattern)]
                
        rel_path = root[len(base_dir) + 1:]
        for f in files:
            result.append(os.path.join(rel_path, f))

        if ignore_dirs and root == base_dir:
            for ignore in ignore_dirs:
                if ignore in dirs:
                    dirs.remove(ignore)

    return result

class Config(object):
    def __init__(self, source_dir=None, dist_dir = None, dist_name = None):
        self.source_dir = source_dir or os.getcwd()
        self.dist_dir = dist_dir or os.path.join(self.source_dir, 'dist')
        self.dist_name = dist_name
        self.bundle = None
        self.version = None
        self.activity_name = None
        self.bundle_id = None
        self.bundle_name = None
        self.bundle_root_dir = None
        self.tar_root_dir = None
        self.xo_name = None
        self.tar_name = None

        self.update()

    def update(self):
        self.bundle = bundle = ActivityBundle(self.source_dir)
        self.version = bundle.get_activity_version()
        self.activity_name = bundle.get_name()
        self.bundle_id = bundle.get_bundle_id()
        self.bundle_name = reduce(lambda x, y:x+y, self.activity_name.split())
        self.bundle_root_dir = self.bundle_name + '.activity'
        self.tar_root_dir = '%s-%d' % (self.bundle_name, self.version)
            
        if self.dist_name:
            self.xo_name = self.tar_name = self.dist_name
        else:
            self.xo_name = '%s-%d.xo' % (self.bundle_name, self.version)
            self.tar_name = '%s-%d.tar.bz2' % (self.bundle_name, self.version)

class Builder(object):
    def __init__(self, config):
        self.config = config

    def build(self):
        self.build_locale()

    def build_locale(self):
        po_dir = os.path.join(self.config.source_dir, 'po')

        if not self.config.bundle.is_dir(po_dir):
            logging.warn("Missing po/ dir, cannot build_locale")
            return
        
        for f in os.listdir(po_dir):
            if not f.endswith('.po'):
                continue

            file_name = os.path.join(po_dir, f)
            lang = f[:-3]

            localedir = os.path.join(self.config.source_dir, 'locale', lang)
            mo_path = os.path.join(localedir, 'LC_MESSAGES')
            if not os.path.isdir(mo_path):
                os.makedirs(mo_path)

            mo_file = os.path.join(mo_path, "%s.mo" % self.config.bundle_id)
            args = ["msgfmt", "--output-file=%s" % mo_file, file_name]
            retcode = subprocess.call(args)
            if retcode:
                print 'ERROR - msgfmt failed with return code %i.' % retcode

            cat = gettext.GNUTranslations(open(mo_file, 'r'))
            translated_name = cat.gettext(self.config.activity_name)
            linfo_file = os.path.join(localedir, 'activity.linfo')
            f = open(linfo_file, 'w')
            f.write('[Activity]\nname = %s\n' % translated_name)
            f.close()

class Packager(object):
    def __init__(self, config):
        self.config = config
        self.package_path = None

        if not os.path.exists(self.config.dist_dir):
            os.mkdir(self.config.dist_dir)

    def _list_files(self):
        ignore_dirs = ['dist', '.git']
        ignore_files = ['.gitignore', 'MANIFEST', '*.pyc', '*~', '*.bak']
        
        return list_files(self.config.source_dir, ignore_dirs, ignore_files)

class BuildPackager(Packager):
    def get_files(self):
        files = self.config.bundle.get_files()

        if not files:
            logging.error('No files found, fixing the MANIFEST.')
            self.fix_manifest()
            files = self.config.bundle.get_files()

        return files

    def _check_manifest(self):
        missing_files = []

        allfiles = self._list_files()        
        for path in allfiles:
            if path not in self.config.bundle.manifest:
                missing_files.append(path)

        return missing_files
        
    def fix_manifest(self):
        manifest = self.config.bundle.manifest
        
        for path in self._check_manifest():
            manifest.append(path)
        
        f = open(os.path.join(self.config.source_dir, "MANIFEST"), "wb")
        for line in manifest:
            f.write(line + "\n")

class XOPackager(BuildPackager):
    def __init__(self, config):
        BuildPackager.__init__(self, config)
        self.package_path = os.path.join(self.config.dist_dir,
                                         self.config.xo_name)

    def package(self):
        bundle_zip = zipfile.ZipFile(self.package_path, 'w',
                                     zipfile.ZIP_DEFLATED)
        
        missing_files = self._check_manifest()
        if missing_files:
            logging.warn('These files are not included in the manifest ' \
                         'and will not be present in the bundle:\n\n' +
                         '\n'.join(missing_files) +
                         '\n\nUse fix_manifest if you want to add them.')

        for f in self.get_files():
            bundle_zip.write(os.path.join(self.config.source_dir, f),
                             os.path.join(self.config.bundle_root_dir, f))

        bundle_zip.close()

class SourcePackager(Packager):
    def __init__(self, config):
        Packager.__init__(self, config)
        self.package_path = os.path.join(self.config.dist_dir,
                                         self.config.tar_name)

    def get_files(self):
        git_ls = subprocess.Popen('git-ls-files', stdout=subprocess.PIPE, 
                                  cwd=self.config.source_dir)
        if git_ls.wait():
            # Fall back to filtered list
            return self._list_files()
        
        return [path.strip() for path in git_ls.stdout.readlines()]

    def package(self):
        tar = tarfile.open(self.package_path, 'w:bz2')
        for f in self.get_files():
            tar.add(os.path.join(self.config.source_dir, f),
                    os.path.join(self.config.tar_root_dir, f))
        tar.close()

def cmd_help(config, options, args):
    print 'Usage: \n\
setup.py build               - build generated files \n\
setup.py dev                 - setup for development \n\
setup.py dist_xo             - create a xo bundle package \n\
setup.py dist_source         - create a tar source package \n\
setup.py fix_manifest        - add missing files to the manifest \n\
setup.py install   [dirname] - install the bundle \n\
setup.py uninstall [dirname] - uninstall the bundle \n\
setup.py genpot              - generate the gettext pot file \n\
setup.py release             - do a new release of the bundle \n\
setup.py help                - print this message \n\
'

def cmd_dev(config, options, args):
    bundle_path = env.get_user_activities_path()
    if not os.path.isdir(bundle_path):
        os.mkdir(bundle_path)
    bundle_path = os.path.join(bundle_path, config.bundle_root_dir)
    try:
        os.symlink(config.source_dir, bundle_path)
    except OSError:
        if os.path.islink(bundle_path):
            print 'ERROR - The bundle has been already setup for development.'
        else:
            print 'ERROR - A bundle with the same name is already installed.'

def cmd_dist_xo(config, options, args):
    builder = Builder(config)
    builder.build()

    packager = XOPackager(config)
    packager.package()

def cmd_fix_manifest(config, options, args):
    builder = Builder(config)
    builder.build()

    packager = XOPackager(config)
    packager.fix_manifest()

def cmd_dist(config, options, args):
    logging.warn("dist deprecated, use dist_xo.")
    cmd_dist_xo(config, options, args)

def cmd_dist_source(config, options, args):
    packager = SourcePackager(config)
    packager.package()

def cmd_install(config, options, args):
    path = args[0]

    packager = XOPackager(config)
    packager.package()

    root_path = os.path.join(args[0], config.bundle_root_dir)
    if os.path.isdir(root_path):
        shutil.rmtree(root_path)

    if not os.path.exists(path):
        os.mkdir(path)

    zf = zipfile.ZipFile(packager.package_path)

    for name in zf.namelist():
        full_path = os.path.join(path, name)            
        if not os.path.exists(os.path.dirname(full_path)):
            os.makedirs(os.path.dirname(full_path))

        outfile = open(full_path, 'wb')
        outfile.write(zf.read(name))
        outfile.flush()
        outfile.close()

def cmd_genpot(config, options, args):
    po_path = os.path.join(config.source_dir, 'po')
    if not os.path.isdir(po_path):
        os.mkdir(po_path)

    python_files = []
    for root_dummy, dirs_dummy, files in os.walk(config.source_dir):
        for file_name in files:
            if file_name.endswith('.py'):
                python_files.append(file_name)

    # First write out a stub .pot file containing just the translated
    # activity name, then have xgettext merge the rest of the
    # translations into that. (We can't just append the activity name
    # to the end of the .pot file afterwards, because that might
    # create a duplicate msgid.)
    pot_file = os.path.join('po', '%s.pot' % config.bundle_name)
    escaped_name = re.sub('([\\\\"])', '\\\\\\1', config.activity_name)
    f = open(pot_file, 'w')
    f.write('#: activity/activity.info:2\n')
    f.write('msgid "%s"\n' % escaped_name)
    f.write('msgstr ""\n')
    f.close()

    args = [ 'xgettext', '--join-existing', '--language=Python',
             '--keyword=_', '--add-comments=TRANS:', '--output=%s' % pot_file ]

    args += python_files
    retcode = subprocess.call(args)
    if retcode:
        print 'ERROR - xgettext failed with return code %i.' % retcode

def cmd_release(config, options, args):
    if not os.path.isdir('.git'):
        print 'ERROR - this command works only for git repositories'
        return

    retcode = subprocess.call(['git', 'pull'])
    if retcode:
        print 'ERROR - cannot pull from git'
        return

    print 'Bumping activity version...'

    info_path = os.path.join(config.source_dir, 'activity', 'activity.info')
    f = open(info_path,'r')
    info = f.read()
    f.close()

    exp = re.compile('activity_version\s?=\s?([0-9]*)')
    match = re.search(exp, info)
    version = int(match.group(1)) + 1
    info = re.sub(exp, 'activity_version = %d' % version, info)

    f = open(info_path, 'w')
    f.write(info)
    f.close()

    config.update()

    news_path = os.path.join(config.source_dir, 'NEWS')

    if os.environ.has_key('SUGAR_NEWS'):
        print 'Update NEWS.sugar...'

        sugar_news_path = os.environ['SUGAR_NEWS']
        if os.path.isfile(sugar_news_path):
            f = open(sugar_news_path,'r')
            sugar_news = f.read()
            f.close()
        else:
            sugar_news = ''

        sugar_news += '%s - %d\n\n' % (config.bundle_name, version)

        f = open(news_path,'r')
        for line in f.readlines():
            if len(line.strip()) > 0:
                sugar_news += line
            else:
                break
        f.close()

        sugar_news += '\n'

        f = open(sugar_news_path, 'w')
        f.write(sugar_news)
        f.close()

    print 'Update NEWS...'

    f = open(news_path,'r')
    news = f.read()
    f.close()

    news = '%d\n\n' % version + news

    f = open(news_path, 'w')
    f.write(news)
    f.close()

    print 'Creating the bundle...'
    packager = XOPackager(config)
    packager.package()

    print 'Committing to git...'

    changelog = 'Release version %d.' % version
    retcode = subprocess.call(['git', 'commit', '-a', '-m % s' % changelog])
    if retcode:
        print 'ERROR - cannot commit to git'
        return

    retcode = subprocess.call(['git', 'tag', 'v%s' % version])
    if retcode:
        print 'ERROR - cannot tag the commit'
        return

    retcode = subprocess.call(['git', 'push'])
    if retcode:
        print 'ERROR - cannot push to git'
        return
    
    retcode = subprocess.call(['git', 'push', '--tags'])
    if retcode:
        print 'ERROR - cannot push tags to git'
        return

    print 'Done.'

def cmd_build(config, options, args):
    builder = Builder(config)
    builder.build()

def start(bundle_name=None):
    if bundle_name:
        logging.warn("bundle_name deprecated, now comes from activity.info")
    parser = OptionParser()
    (options, args) = parser.parse_args()

    config = Config()

    try:
        globals()['cmd_' + args[0]](config, options, args[1:])
    except (KeyError, IndexError):
        cmd_help(config, options, args)

if __name__ == '__main__':
    start()