# copyright 2003-2011 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
#
# This file is part of CubicWeb.
#
# CubicWeb 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 2.1 of the License, or (at your option)
# any later version.
#
# CubicWeb 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 CubicWeb.  If not, see <http://www.gnu.org/licenses/>.
"""additional cubicweb-ctl commands and command handlers for cubicweb and
cubicweb's cubes development
"""

__docformat__ = "restructuredtext en"

# *ctl module should limit the number of import to be imported as quickly as
# possible (for cubicweb-ctl reactivity, necessary for instance for usable bash
# completion). So import locally in command helpers.
import sys
from datetime import datetime
from os import mkdir, chdir, path as osp
from warnings import warn

from logilab.common import STD_BLACKLIST

from cubicweb.__pkginfo__ import version as cubicwebversion
from cubicweb import CW_SOFTWARE_ROOT as BASEDIR, BadCommandUsage, ExecutionError
from cubicweb.cwctl import CWCTL
from cubicweb.cwconfig import CubicWebNoAppConfiguration
from cubicweb.toolsutils import (SKEL_EXCLUDE, Command, copy_skeleton,
                                 underline_title)
from cubicweb.web.webconfig import WebConfiguration
from cubicweb.server.serverconfig import ServerConfiguration


class DevConfiguration(ServerConfiguration, WebConfiguration):
    """dummy config to get full library schema and appobjects for
    a cube or for cubicweb (without a home)
    """
    creating = True
    cleanup_interface_sobjects = False

    cubicweb_appobject_path = (ServerConfiguration.cubicweb_appobject_path
                               | WebConfiguration.cubicweb_appobject_path)
    cube_appobject_path = (ServerConfiguration.cube_appobject_path
                           | WebConfiguration.cube_appobject_path)

    def __init__(self, *cubes):
        super(DevConfiguration, self).__init__(cubes and cubes[0] or None)
        if cubes:
            self._cubes = self.reorder_cubes(
                self.expand_cubes(cubes, with_recommends=True))
            self.load_site_cubicweb()
        else:
            self._cubes = ()

    @property
    def apphome(self):
        return None

    def available_languages(self):
        return self.cw_languages()

    def main_config_file(self):
        return None
    def init_log(self):
        pass
    def load_configuration(self):
        pass
    def default_log_file(self):
        return None


def cleanup_sys_modules(config):
    # cleanup sys.modules, required when we're updating multiple cubes
    for name, mod in sys.modules.items():
        if mod is None:
            # duh ? logilab.common.os for instance
            del sys.modules[name]
            continue
        if not hasattr(mod, '__file__'):
            continue
        if mod.__file__ is None:
            # odd/rare but real
            continue
        for path in config.vregistry_path():
            if mod.__file__.startswith(path):
                del sys.modules[name]
                break
    # fresh rtags
    from cubicweb import rtags
    from cubicweb.web import uicfg
    rtags.RTAGS[:] = []
    reload(uicfg)

def generate_schema_pot(w, cubedir=None):
    """generate a pot file with schema specific i18n messages

    notice that relation definitions description and static vocabulary
    should be marked using '_' and extracted using xgettext
    """
    from cubicweb.cwvreg import CWRegistryStore
    if cubedir:
        cube = osp.split(cubedir)[-1]
        config = DevConfiguration(cube)
        depcubes = list(config._cubes)
        depcubes.remove(cube)
        libconfig = DevConfiguration(*depcubes)
    else:
        config = DevConfiguration()
        cube = libconfig = None
    cleanup_sys_modules(config)
    schema = config.load_schema(remove_unused_rtypes=False)
    vreg = CWRegistryStore(config)
    # set_schema triggers objects registrations
    vreg.set_schema(schema)
    w(DEFAULT_POT_HEAD)
    _generate_schema_pot(w, vreg, schema, libconfig=libconfig)


def _generate_schema_pot(w, vreg, schema, libconfig=None):
    from copy import deepcopy
    from cubicweb.i18n import add_msg
    from cubicweb.web import uicfg
    from cubicweb.schema import NO_I18NCONTEXT, CONSTRAINTS
    w('# schema pot file, generated on %s\n'
      % datetime.now().strftime('%Y-%m-%d %H:%M:%S'))
    w('# \n')
    w('# singular and plural forms for each entity type\n')
    w('\n')
    vregdone = set()
    if libconfig is not None:
        from cubicweb.cwvreg import CWRegistryStore, clear_rtag_objects
        libschema = libconfig.load_schema(remove_unused_rtypes=False)
        afs = deepcopy(uicfg.autoform_section)
        appearsin_addmenu = deepcopy(uicfg.actionbox_appearsin_addmenu)
        clear_rtag_objects()
        cleanup_sys_modules(libconfig)
        libvreg = CWRegistryStore(libconfig)
        libvreg.set_schema(libschema) # trigger objects registration
        libafs = uicfg.autoform_section
        libappearsin_addmenu = uicfg.actionbox_appearsin_addmenu
        # prefill vregdone set
        list(_iter_vreg_objids(libvreg, vregdone))
    else:
        libschema = {}
        afs = uicfg.autoform_section
        appearsin_addmenu = uicfg.actionbox_appearsin_addmenu
        for cstrtype in CONSTRAINTS:
            add_msg(w, cstrtype)
    done = set()
    for eschema in sorted(schema.entities()):
        if eschema.type in libschema:
            done.add(eschema.description)
    for eschema in sorted(schema.entities()):
        etype = eschema.type
        if etype not in libschema:
            add_msg(w, etype)
            add_msg(w, '%s_plural' % etype)
            if not eschema.final:
                add_msg(w, 'This %s' % etype)
                add_msg(w, 'New %s' % etype)
            if eschema.description and not eschema.description in done:
                done.add(eschema.description)
                add_msg(w, eschema.description)
        if eschema.final:
            continue
        for rschema, targetschemas, role in eschema.relation_definitions(True):
            if rschema.final:
                continue
            for tschema in targetschemas:
                fsections = afs.etype_get(eschema, rschema, role, tschema)
                if 'main_inlined' in fsections and \
                       (libconfig is None or not
                        'main_inlined' in libafs.etype_get(
                            eschema, rschema, role, tschema)):
                    add_msg(w, 'add a %s' % tschema,
                            'inlined:%s.%s.%s' % (etype, rschema, role))
                    add_msg(w, str(tschema),
                            'inlined:%s.%s.%s' % (etype, rschema, role))
                if appearsin_addmenu.etype_get(eschema, rschema, role, tschema):
                    if libconfig is not None and libappearsin_addmenu.etype_get(
                        eschema, rschema, role, tschema):
                        if eschema in libschema and tschema in libschema:
                            continue
                    if role == 'subject':
                        label = 'add %s %s %s %s' % (eschema, rschema,
                                                     tschema, role)
                        label2 = "creating %s (%s %%(linkto)s %s %s)" % (
                            tschema, eschema, rschema, tschema)
                    else:
                        label = 'add %s %s %s %s' % (tschema, rschema,
                                                     eschema, role)
                        label2 = "creating %s (%s %s %s %%(linkto)s)" % (
                            tschema, tschema, rschema, eschema)
                    add_msg(w, label)
                    add_msg(w, label2)
            # XXX also generate "creating ...' messages for actions in the
            # addrelated submenu
    w('# subject and object forms for each relation type\n')
    w('# (no object form for final or symmetric relation types)\n')
    w('\n')
    for rschema in sorted(schema.relations()):
        if rschema.type in libschema:
            done.add(rschema.type)
            done.add(rschema.description)
    for rschema in sorted(schema.relations()):
        rtype = rschema.type
        if rtype not in libschema:
            # bw compat, necessary until all translation of relation are done
            # properly...
            add_msg(w, rtype)
            done.add(rtype)
            if rschema.description and rschema.description not in done:
                add_msg(w, rschema.description)
            done.add(rschema.description)
            librschema = None
        else:
            librschema = libschema.rschema(rtype)
        # add context information only for non-metadata rtypes
        if rschema not in NO_I18NCONTEXT:
            libsubjects = librschema and librschema.subjects() or ()
            for subjschema in rschema.subjects():
                if not subjschema in libsubjects:
                    add_msg(w, rtype, subjschema.type)
        if not (rschema.final or rschema.symmetric):
            if rschema not in NO_I18NCONTEXT:
                libobjects = librschema and librschema.objects() or ()
                for objschema in rschema.objects():
                    if not objschema in libobjects:
                        add_msg(w, '%s_object' % rtype, objschema.type)
            if rtype not in libschema:
                # bw compat, necessary until all translation of relation are
                # done properly...
                add_msg(w, '%s_object' % rtype)
        for rdef in rschema.rdefs.itervalues():
            if not rdef.description or rdef.description in done:
                continue
            if (librschema is None or
                (rdef.subject, rdef.object) not in librschema.rdefs or
                librschema.rdefs[(rdef.subject, rdef.object)].description != rdef.description):
                add_msg(w, rdef.description)
            done.add(rdef.description)
    for objid in _iter_vreg_objids(vreg, vregdone):
        add_msg(w, '%s_description' % objid)
        add_msg(w, objid)


def _iter_vreg_objids(vreg, done):
    for reg, objdict in vreg.items():
        if reg in ('boxes', 'contentnavigation'):
            continue
        for objects in objdict.values():
            for obj in objects:
                objid = '%s_%s' % (reg, obj.__regid__)
                if objid in done:
                    break
                pdefs = getattr(obj, 'cw_property_defs', {})
                if pdefs:
                    yield objid
                    done.add(objid)
                    break


DEFAULT_POT_HEAD = r'''msgid ""
msgstr ""
"Project-Id-Version: cubicweb %s\n"
"PO-Revision-Date: 2008-03-28 18:14+0100\n"
"Last-Translator: Logilab Team <contact@logilab.fr>\n"
"Language-Team: fr <contact@logilab.fr>\n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=UTF-8\n"
"Content-Transfer-Encoding: 8bit\n"
"Generated-By: cubicweb-devtools\n"
"Plural-Forms: nplurals=2; plural=(n > 1);\n"

''' % cubicwebversion


class UpdateCubicWebCatalogCommand(Command):
    """Update i18n catalogs for cubicweb library.

    It will regenerate cubicweb/i18n/xx.po files. You'll have then to edit those
    files to add translations of newly added messages.
    """
    name = 'i18ncubicweb'
    min_args = max_args = 0

    def run(self, args):
        """run the command with its specific arguments"""
        import shutil
        import tempfile
        import yams
        from logilab.common.fileutils import ensure_fs_mode
        from logilab.common.shellutils import globfind, find, rm
        from logilab.common.modutils import get_module_files
        from cubicweb.i18n import extract_from_tal, execute
        tempdir = tempfile.mkdtemp(prefix='cw-')
        cwi18ndir = WebConfiguration.i18n_lib_dir()
        print '-> extract schema messages.'
        schemapot = osp.join(tempdir, 'schema.pot')
        potfiles = [schemapot]
        potfiles.append(schemapot)
        # explicit close necessary else the file may not be yet flushed when
        # we'll using it below
        schemapotstream = file(schemapot, 'w')
        generate_schema_pot(schemapotstream.write, cubedir=None)
        schemapotstream.close()
        print '-> extract TAL messages.'
        tali18nfile = osp.join(tempdir, 'tali18n.py')
        extract_from_tal(find(osp.join(BASEDIR, 'web'), ('.py', '.pt')),
                         tali18nfile)
        print '-> generate .pot files.'
        pyfiles = get_module_files(BASEDIR)
        pyfiles += globfind(osp.join(BASEDIR, 'misc', 'migration'), '*.py')
        schemafiles = globfind(osp.join(BASEDIR, 'schemas'), '*.py')
        jsfiles = globfind(osp.join(BASEDIR, 'web'), 'cub*.js')
        for id, files, lang in [('pycubicweb', pyfiles, None),
                                ('schemadescr', schemafiles, None),
                                ('yams', get_module_files(yams.__path__[0]), None),
                                ('tal', [tali18nfile], None),
                                ('js', jsfiles, 'java'),
                                ]:
            cmd = 'xgettext --no-location --omit-header -k_ -o %s %s'
            if lang is not None:
                cmd += ' -L %s' % lang
            potfile = osp.join(tempdir, '%s.pot' % id)
            execute(cmd % (potfile, ' '.join('"%s"' % f for f in files)))
            if osp.exists(potfile):
                potfiles.append(potfile)
            else:
                print '-> WARNING: %s file was not generated' % potfile
        print '-> merging %i .pot files' % len(potfiles)
        cubicwebpot = osp.join(tempdir, 'cubicweb.pot')
        execute('msgcat -o %s %s'
                % (cubicwebpot, ' '.join('"%s"' % f for f in potfiles)))
        print '-> merging main pot file with existing translations.'
        chdir(cwi18ndir)
        toedit = []
        for lang in CubicWebNoAppConfiguration.cw_languages():
            target = '%s.po' % lang
            execute('msgmerge -N --sort-output -o "%snew" "%s" "%s"'
                    % (target, target, cubicwebpot))
            ensure_fs_mode(target)
            shutil.move('%snew' % target, target)
            toedit.append(osp.abspath(target))
        # cleanup
        rm(tempdir)
        # instructions pour la suite
        print '-> regenerated CubicWeb\'s .po catalogs.'
        print '\nYou can now edit the following files:'
        print '* ' + '\n* '.join(toedit)
        print 'when you are done, run "cubicweb-ctl i18ncube yourcube".'


class UpdateCubeCatalogCommand(Command):
    """Update i18n catalogs for cubes. If no cube is specified, update
    catalogs of all registered cubes.
    """
    name = 'i18ncube'
    arguments = '[<cube>...]'

    def run(self, args):
        """run the command with its specific arguments"""
        if args:
            cubes = [DevConfiguration.cube_dir(cube) for cube in args]
        else:
            cubes = [DevConfiguration.cube_dir(cube)
                     for cube in DevConfiguration.available_cubes()]
            cubes = [cubepath for cubepath in cubes
                     if osp.exists(osp.join(cubepath, 'i18n'))]
        if not update_cubes_catalogs(cubes):
            raise ExecutionError("update cubes i18n catalog failed")


def update_cubes_catalogs(cubes):
    for cubedir in cubes:
        if not osp.isdir(cubedir):
            print '-> ignoring %s that is not a directory.' % cubedir
            continue
        try:
            toedit = update_cube_catalogs(cubedir)
        except Exception:
            import traceback
            traceback.print_exc()
            print '-> error while updating catalogs for cube', cubedir
            return False
        else:
            # instructions pour la suite
            if toedit:
                print '-> regenerated .po catalogs for cube %s.' % cubedir
                print '\nYou can now edit the following files:'
                print '* ' + '\n* '.join(toedit)
                print ('When you are done, run "cubicweb-ctl i18ninstance '
                       '<yourinstance>" to see changes in your instances.')
            return True

def update_cube_catalogs(cubedir):
    import shutil
    import tempfile
    from logilab.common.fileutils import ensure_fs_mode
    from logilab.common.shellutils import find, rm
    from cubicweb.i18n import extract_from_tal, execute
    cube = osp.basename(osp.normpath(cubedir))
    tempdir = tempfile.mkdtemp()
    print underline_title('Updating i18n catalogs for cube %s' % cube)
    chdir(cubedir)
    if osp.exists(osp.join('i18n', 'entities.pot')):
        warn('entities.pot is deprecated, rename file to static-messages.pot (%s)'
             % osp.join('i18n', 'entities.pot'), DeprecationWarning)
        potfiles = [osp.join('i18n', 'entities.pot')]
    elif osp.exists(osp.join('i18n', 'static-messages.pot')):
        potfiles = [osp.join('i18n', 'static-messages.pot')]
    else:
        potfiles = []
    print '-> extract schema messages'
    schemapot = osp.join(tempdir, 'schema.pot')
    potfiles.append(schemapot)
    # explicit close necessary else the file may not be yet flushed when
    # we'll using it below
    schemapotstream = file(schemapot, 'w')
    generate_schema_pot(schemapotstream.write, cubedir)
    schemapotstream.close()
    print '-> extract TAL messages'
    tali18nfile = osp.join(tempdir, 'tali18n.py')
    ptfiles = find('.', ('.py', '.pt'), blacklist=STD_BLACKLIST+('test',))
    extract_from_tal(ptfiles, tali18nfile)
    print '-> extract Javascript messages'
    jsfiles =  [jsfile for jsfile in find('.', '.js')
                if osp.basename(jsfile).startswith('cub')]
    if jsfiles:
        tmppotfile = osp.join(tempdir, 'js.pot')
        execute('xgettext --no-location --omit-header -k_ -L java '
                '--from-code=utf-8 -o %s %s' % (tmppotfile, ' '.join(jsfiles)))
        # no pot file created if there are no string to translate
        if osp.exists(tmppotfile):
            potfiles.append(tmppotfile)
    print '-> create cube-specific catalog'
    tmppotfile = osp.join(tempdir, 'generated.pot')
    cubefiles = find('.', '.py', blacklist=STD_BLACKLIST+('test',))
    cubefiles.append(tali18nfile)
    execute('xgettext --no-location --omit-header -k_ -o %s %s'
            % (tmppotfile, ' '.join('"%s"' % f for f in cubefiles)))
    if osp.exists(tmppotfile): # doesn't exists of no translation string found
        potfiles.append(tmppotfile)
    potfile = osp.join(tempdir, 'cube.pot')
    print '-> merging %i .pot files:' % len(potfiles)
    execute('msgcat -o %s %s' % (potfile,
                                 ' '.join('"%s"' % f for f in potfiles)))
    if not osp.exists(potfile):
        print 'no message catalog for cube', cube, 'nothing to translate'
        # cleanup
        rm(tempdir)
        return ()
    print '-> merging main pot file with existing translations:'
    chdir('i18n')
    toedit = []
    for lang in CubicWebNoAppConfiguration.cw_languages():
        print '-> language', lang
        cubepo = '%s.po' % lang
        if not osp.exists(cubepo):
            shutil.copy(potfile, cubepo)
        else:
            execute('msgmerge -N -s -o %snew %s %s' % (cubepo, cubepo, potfile))
            ensure_fs_mode(cubepo)
            shutil.move('%snew' % cubepo, cubepo)
        toedit.append(osp.abspath(cubepo))
    # cleanup
    rm(tempdir)
    return toedit


# XXX totally broken, fix it
# class LiveServerCommand(Command):
#     """Run a server from within a cube directory.
#     """
#     name = 'live-server'
#     arguments = ''
#     options = ()

#     def run(self, args):
#         """run the command with its specific arguments"""
#         from cubicweb.devtools.livetest import runserver
#         runserver()


class NewCubeCommand(Command):
    """Create a new cube.

    <cubename>
      the name of the new cube. It should be a valid python module name.
    """
    name = 'newcube'
    arguments = '<cubename>'
    min_args = max_args = 1
    options = (
        ("layout",
         {'short': 'L', 'type' : 'choice', 'metavar': '<cube layout>',
          'default': 'simple', 'choices': ('simple', 'full'),
          'help': 'cube layout. You\'ll get a minimal cube with the "simple" \
layout, and a full featured cube with "full" layout.',
          }
         ),
        ("directory",
         {'short': 'd', 'type' : 'string', 'metavar': '<cubes directory>',
          'help': 'directory where the new cube should be created',
          }
         ),
        ("verbose",
         {'short': 'v', 'type' : 'yn', 'metavar': '<verbose>',
          'default': 'n',
          'help': 'verbose mode: will ask all possible configuration questions',
          }
         ),
        ("author",
         {'short': 'a', 'type' : 'string', 'metavar': '<author>',
          'default': 'LOGILAB S.A. (Paris, FRANCE)',
          'help': 'cube author',
          }
         ),
        ("author-email",
         {'short': 'e', 'type' : 'string', 'metavar': '<email>',
          'default': 'contact@logilab.fr',
          'help': 'cube author\'s email',
          }
         ),
        ("author-web-site",
         {'short': 'w', 'type' : 'string', 'metavar': '<web site>',
          'default': 'http://www.logilab.fr',
          'help': 'cube author\'s web site',
          }
         ),
        ("license",
         {'short': 'l', 'type' : 'choice', 'metavar': '<license>',
          'default': 'LGPL', 'choices': ('GPL', 'LGPL', ''),
          'help': 'cube license',
          }
         ),
        )

    LICENSES = {
        'LGPL': '''\
# This program 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 2.1 of the License, or (at your option)
# any later version.
#
# This program 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 program. If not, see <http://www.gnu.org/licenses/>.
''',

        'GPL': '''\
# This program 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, either version 2.1 of the License, or (at your option) any later
# version.
#
# This program 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.
#
# You should have received a copy of the GNU General Public License along with
# this program. If not, see <http://www.gnu.org/licenses/>.
''',
        '': '# INSERT LICENSE HERE'
        }

    def run(self, args):
        import re
        from logilab.common.shellutils import ASK
        cubename = args[0]
        if not re.match('[_A-Za-z][_A-Za-z0-9]*$', cubename):
            raise BadCommandUsage(
                'cube name must be a valid python module name')
        verbose = self.get('verbose')
        cubesdir = self.get('directory')
        if not cubesdir:
            cubespath = ServerConfiguration.cubes_search_path()
            if len(cubespath) > 1:
                raise BadCommandUsage(
                    "can't guess directory where to put the new cube."
                    " Please specify it using the --directory option")
            cubesdir = cubespath[0]
        if not osp.isdir(cubesdir):
            print "-> creating cubes directory", cubesdir
            try:
                mkdir(cubesdir)
            except OSError, err:
                self.fail("failed to create directory %r\n(%s)"
                          % (cubesdir, err))
        cubedir = osp.join(cubesdir, cubename)
        if osp.exists(cubedir):
            self.fail("%s already exists !" % cubedir)
        skeldir = osp.join(BASEDIR, 'skeleton')
        default_name = 'cubicweb-%s' % cubename.lower().replace('_', '-')
        if verbose:
            distname = raw_input('Debian name for your cube ? [%s]): '
                                 % default_name).strip()
            if not distname:
                distname = default_name
            elif not distname.startswith('cubicweb-'):
                if ASK.confirm('Do you mean cubicweb-%s ?' % distname):
                    distname = 'cubicweb-' + distname
        else:
            distname = default_name
        if not re.match('[a-z][-a-z0-9]*$', distname):
            raise BadCommandUsage(
                'cube distname should be a valid debian package name')
        longdesc = shortdesc = raw_input(
            'Enter a short description for your cube: ')
        if verbose:
            longdesc = raw_input(
                'Enter a long description (leave empty to reuse the short one): ')
        dependencies = {'cubicweb': '>= %s' % cubicwebversion}
        if verbose:
            dependencies.update(self._ask_for_dependencies())
        context = {'cubename' : cubename,
                   'distname' : distname,
                   'shortdesc' : shortdesc,
                   'longdesc' : longdesc or shortdesc,
                   'dependencies' : dependencies,
                   'version'  : cubicwebversion,
                   'year'  : str(datetime.now().year),
                   'author': self['author'],
                   'author-email': self['author-email'],
                   'author-web-site': self['author-web-site'],
                   'license': self['license'],
                   'long-license': self.LICENSES[self['license']],
                   }
        exclude = SKEL_EXCLUDE
        if self['layout'] == 'simple':
            exclude += ('sobjects.py*', 'precreate.py*', 'realdb_test*',
                        'cubes.*', 'uiprops.py*')
        copy_skeleton(skeldir, cubedir, context, exclude=exclude)

    def _ask_for_dependencies(self):
        from logilab.common.shellutils import ASK
        from logilab.common.textutils import splitstrip
        depcubes = []
        for cube in ServerConfiguration.available_cubes():
            answer = ASK.ask("Depends on cube %s? " % cube,
                             ('N','y','skip','type'), 'N')
            if answer == 'y':
                depcubes.append(cube)
            if answer == 'type':
                depcubes = splitstrip(raw_input('type dependencies: '))
                break
            elif answer == 'skip':
                break
        return dict(('cubicweb-' + cube, ServerConfiguration.cube_version(cube))
                    for cube in depcubes)


class ExamineLogCommand(Command):
    """Examine a rql log file.

    will print out the following table

      total execution time || number of occurences || rql query

    sorted by descending total execution time

    chances are the lines at the top are the ones that will bring the higher
    benefit after optimisation. Start there.
    """
    arguments = 'rql.log'
    name = 'exlog'
    options = ()

    def run(self, args):
        import re
        requests = {}
        for filepath in args:
            try:
                stream = file(filepath)
            except OSError, ex:
                raise BadCommandUsage("can't open rql log file %s: %s"
                                      % (filepath, ex))
            for lineno, line in enumerate(stream):
                if not ' WHERE ' in line:
                    continue
                try:
                    rql, time = line.split('--')
                    rql = re.sub("(\'\w+': \d*)", '', rql)
                    if '{' in rql:
                        rql = rql[:rql.index('{')]
                    req = requests.setdefault(rql, [])
                    time.strip()
                    chunks = time.split()
                    clocktime = float(chunks[0][1:])
                    cputime = float(chunks[-3])
                    req.append( (clocktime, cputime) )
                except Exception, exc:
                    sys.stderr.write('Line %s: %s (%s)\n' % (lineno, exc, line))
        stat = []
        for rql, times in requests.iteritems():
            stat.append( (sum(time[0] for time in times),
                          sum(time[1] for time in times),
                          len(times), rql) )
        stat.sort()
        stat.reverse()
        total_time = sum(clocktime for clocktime, cputime, occ, rql in stat) * 0.01
        print 'Percentage;Cumulative Time (clock);Cumulative Time (CPU);Occurences;Query'
        for clocktime, cputime, occ, rql in stat:
            print '%.2f;%.2f;%.2f;%s;%s' % (clocktime/total_time, clocktime,
                                            cputime, occ, rql)


class GenerateSchema(Command):
    """Generate schema image for the given cube"""
    name = "schema"
    arguments = '<cube>'
    min_args = max_args = 1
    options = [
        ('output-file',
         {'type':'file', 'default': None,
          'metavar': '<file>', 'short':'o', 'help':'output image file',
          'input':False,
          }),
        ('viewer',
         {'type': 'string', 'default':None,
          'short': "d", 'metavar':'<cmd>',
          'help':'command use to view the generated file (empty for none)',
          }),
        ('show-meta',
         {'action': 'store_true', 'default':False,
          'short': "m", 'metavar': "<yN>",
          'help':'include meta and internal entities in schema',
          }),
        ('show-workflow',
         {'action': 'store_true', 'default':False,
          'short': "w", 'metavar': "<yN>",
          'help':'include workflow entities in schema',
          }),
        ('show-cw-user',
         {'action': 'store_true', 'default':False,
          'metavar': "<yN>",
          'help':'include cubicweb user entities in schema',
          }),
        ('exclude-type',
         {'type':'string', 'default':'',
          'short': "x", 'metavar': "<types>",
          'help':'coma separated list of entity types to remove from view',
          }),
        ('include-type',
         {'type':'string', 'default':'',
          'short': "i", 'metavar': "<types>",
          'help':'coma separated list of entity types to include in view',
          }),
        ]

    def run(self, args):
        from subprocess import Popen
        from tempfile import NamedTemporaryFile
        from logilab.common.textutils import splitstrip
        from yams import schema2dot, BASE_TYPES
        from cubicweb.schema import (META_RTYPES, SCHEMA_TYPES, SYSTEM_RTYPES,
                                     WORKFLOW_TYPES, INTERNAL_TYPES)
        cubes = splitstrip(args[0])
        dev_conf = DevConfiguration(*cubes)
        schema = dev_conf.load_schema()
        out, viewer = self['output-file'], self['viewer']
        if out is None:
            tmp_file = NamedTemporaryFile(suffix=".svg")
            out = tmp_file.name
        skiptypes = BASE_TYPES | SCHEMA_TYPES
        if not self['show-meta']:
            skiptypes |=  META_RTYPES | SYSTEM_RTYPES | INTERNAL_TYPES
        if not self['show-workflow']:
            skiptypes |= WORKFLOW_TYPES
        if not self['show-cw-user']:
            skiptypes |= set(('CWUser', 'CWGroup', 'EmailAddress'))
        skiptypes |= set(self['exclude-type'].split(','))
        skiptypes -= set(self['include-type'].split(','))
        schema2dot.schema2dot(schema, out, skiptypes=skiptypes)
        if viewer:
            p = Popen((viewer, out))
            p.wait()


class GenerateQUnitHTML(Command):
    """Generate a QUnit html file to see test in your browser"""
    name = "qunit-html"
    arguments = '<test file> [<dependancy js file>...]'

    def run(self, args):
        from cubicweb.devtools.qunit import make_qunit_html
        print make_qunit_html(args[0], args[1:])

for cmdcls in (UpdateCubicWebCatalogCommand,
               UpdateCubeCatalogCommand,
               #LiveServerCommand,
               NewCubeCommand,
               ExamineLogCommand,
               GenerateSchema,
               GenerateQUnitHTML,
               ):
    CWCTL.register(cmdcls)