# -*- coding:utf-8 -*-
from Acquisition import aq_get
from Products.CMFCore.utils import getToolByName
from Products.CMFPlone.utils import safe_unicode
from zope.i18n import translate
from zope.i18nmessageid import MessageFactory
from zope.interface import implementer
from zope.schema.interfaces import IVocabularyFactory
from zope.schema.vocabulary import SimpleTerm
from zope.schema.vocabulary import SimpleVocabulary
from zope.site.hooks import getSite

_ = MessageFactory('plone')


@implementer(IVocabularyFactory)
class WorkflowsVocabulary(object):
    """Vocabulary factory for workflows.

      >>> from zope.component import queryUtility
      >>> from plone.app.vocabularies.tests.base import create_context
      >>> from plone.app.vocabularies.tests.base import DummyTool

      >>> name = 'plone.app.vocabularies.Workflows'
      >>> util = queryUtility(IVocabularyFactory, name)
      >>> context = create_context()

      >>> class Workflow(object):
      ...     def __init__(self, id, title):
      ...         self.id = id
      ...         self.title = title

      >>> tool = DummyTool('portal_workflow')
      >>> def values():
      ...     return (Workflow('default', 'Default Workflow'),
      ...             Workflow('intranet', 'Intranet Workflow'),
      ...             Workflow('noticias', 'Workflow de Notícias'),)
      >>> tool.values = values
      >>> context.portal_workflow = tool

      >>> workflows = util(context)
      >>> workflows
      <zope.schema.vocabulary.SimpleVocabulary object at ...>

      >>> len(workflows.by_token)
      3

      >>> intranet = workflows.by_token['intranet']
      >>> intranet.title, intranet.token, intranet.value
      (u'Intranet Workflow', 'intranet', 'intranet')

      >>> noticias = workflows.by_token['noticias']
      >>> noticias.title == 'Workflow de Notícias'.decode('utf-8')
      True
    """

    def __call__(self, context):
        items = []
        site = getSite()
        wtool = getToolByName(site, 'portal_workflow', None)
        if wtool is not None:
            items = [(w.title, w.id) for w in wtool.values()]
            items.sort()
            # All vocabularies return theirs term title as unicode
            items = [
                SimpleTerm(i[1], i[1], safe_unicode(i[0]))
                for i in items
            ]
        return SimpleVocabulary(items)

WorkflowsVocabularyFactory = WorkflowsVocabulary()


@implementer(IVocabularyFactory)
class WorkflowStatesVocabulary(object):
    """Vocabulary factory for workflow states.

      >>> from zope.component import queryUtility
      >>> from plone.app.vocabularies.tests.base import create_context
      >>> from plone.app.vocabularies.tests.base import DummyTool

      >>> name = 'plone.app.vocabularies.WorkflowStates'
      >>> util = queryUtility(IVocabularyFactory, name)
      >>> context = create_context()

      >>> tool = DummyTool('portal_workflow')
      >>> def listWFStatesByTitle(filter_similar=None):
      ...     return (('Private', 'private'),
      ...             ('Revisão', 'revisao'),
      ...             ('Published', 'published'))
      >>> tool.listWFStatesByTitle = listWFStatesByTitle
      >>> context.portal_workflow = tool

      >>> states = util(context)
      >>> states
      <zope.schema.vocabulary.SimpleVocabulary object at ...>

      >>> len(states.by_token)
      3

      >>> pub = states.by_token['published']
      >>> pub.title, pub.token, pub.value
      (u'Published [published]', 'published', 'published')

      >>> rev = states.by_token['revisao']
      >>> rev.title == 'Revisão [revisao]'.decode('utf-8')
      True
    """

    def __call__(self, context):
        site = getSite()
        wtool = getToolByName(site, 'portal_workflow', None)
        if wtool is None:
            return SimpleVocabulary([])

        # XXX This is evil. A vocabulary shouldn't be request specific.
        # The sorting should go into a separate widget.

        # we get REQUEST from wtool because context may be an adapter
        request = aq_get(wtool, 'REQUEST', None)

        items = wtool.listWFStatesByTitle(filter_similar=True)
        items = [(safe_unicode(i[0]), i[1]) for i in items]
        items_dict = dict(  # no dict comprehension in py 2.6
            [
                (i[1], translate(_(i[0]), context=request))
                for i in items
            ]
        )
        items_list = [(k, v) for k, v in items_dict.items()]
        items_list.sort(lambda x, y: cmp(x[1], y[1]))
        terms = [
            SimpleTerm(k, title=u'%s [%s]' % (v, k))
            for k, v in items_list
        ]
        return SimpleVocabulary(terms)

WorkflowStatesVocabularyFactory = WorkflowStatesVocabulary()


@implementer(IVocabularyFactory)
class WorkflowTransitionsVocabulary(object):
    """Vocabulary factory for workflow transitions

      >>> from zope.component import queryUtility
      >>> from plone.app.vocabularies.tests.base import create_context
      >>> from plone.app.vocabularies.tests.base import DummyTool

      >>> name = 'plone.app.vocabularies.WorkflowTransitions'
      >>> util = queryUtility(IVocabularyFactory, name)
      >>> context = create_context()

      >>> class Transition(object):
      ...     def __init__(self, id, actbox_name):
      ...         self.id = id
      ...         self.actbox_name = actbox_name

      >>> class TransitionsFolder(object):
      ...     def __init__(self, values):
      ...         self._values = values
      ...     def values(self):
      ...         return self._values

      >>> class Workflow(object):
      ...     def __init__(self, id, title, values):
      ...         self.id = id
      ...         self.title = title
      ...         self.transitions = TransitionsFolder(values)

      >>> tool = DummyTool('portal_workflow')
      >>> t1 = Transition('publish', 'Publish')
      >>> t2 = Transition('reject', 'Reject')
      >>> t3 = Transition('publicacao', 'Publicação')

      >>> wf1 = Workflow('default', 'Default Workflow', (t1, t2))
      >>> wf2 = Workflow('intranet', 'Intranet Workflow', (t1, ))
      >>> wf3 = Workflow('noticias', 'Workflow de Notícias', (t2, t3))

      >>> def values():
      ...     return (wf1, wf2, wf3)
      >>> tool.values = values
      >>> context.portal_workflow = tool

      >>> transitions = util(context)
      >>> transitions
      <zope.schema.vocabulary.SimpleVocabulary object at ...>

      >>> len(transitions.by_token)
      3

      >>> pub = transitions.by_token['publish']
      >>> pub.title, pub.token, pub.value
      (u'Publish [publish]', 'publish', 'publish')

      >>> publ = transitions.by_token['publicacao']
      >>> publ.title == 'Publicação [publicacao]'.decode('utf-8')
      True
    """

    def __call__(self, context):
        site = getSite()
        wtool = getToolByName(site, 'portal_workflow', None)
        if wtool is None:
            return SimpleVocabulary([])

        transitions = {}
        for wf in wtool.values():
            transition_folder = getattr(wf, 'transitions', None)
            wf_name = wf.title or wf.id
            if transition_folder is not None:

                for transition in transition_folder.values():

                    # zope.i18nmessageid will choke
                    # if undecoded UTF-8 bytestrings slip through
                    # which we may encounter on international sites
                    # where transition names are in local language.
                    # This may break overlying functionality even
                    # if the terms themselves are never used
                    name = safe_unicode(transition.actbox_name)

                    transition_title = translate(
                                        _(name),
                                        context=aq_get(wtool, 'REQUEST', None))
                    transitions.setdefault(transition.id, []).append(
                        dict(title=transition_title, wf_name=wf_name))
        items = []
        transition_items = transitions.items()
        transition_items.sort(key=lambda transition: transition[0])
        for transition_id, info in transition_items:
            titles = set([i['title'] for i in info])
            item_title = ' // '.join(sorted(titles))
            item_title = "%s [%s]" % (item_title, transition_id)
            items.append(SimpleTerm(transition_id, transition_id, item_title))

        return SimpleVocabulary(items)

WorkflowTransitionsVocabularyFactory = WorkflowTransitionsVocabulary()