from AccessControl import getSecurityManager
from AccessControl import ClassSecurityInfo

from Acquisition import ImplicitAcquisitionWrapper
from Acquisition.interfaces import IAcquirer

from zope import component
from zope.interface import implements, implementsOnly, implementer
from zope.component import adapts, adapter

from Products.CMFCore.utils import getToolByName

from z3c.form.interfaces import IFormLayer, IFieldWidget, NOVALUE
from z3c.form.widget import Widget, FieldWidget
from collective.z3cform.datetimewidget import DateWidget

from Products.Five.browser.pagetemplatefile import ViewPageTemplateFile
from Products.Five.browser import BrowserView

from plone.dexterity.factory import DexterityFactory

from zc.relation.interfaces import ICatalog
from zope.app.intid.interfaces import IIntIds

from z3c.form.converter import BaseDataConverter
from Products.statusmessages.interfaces import IStatusMessage

from themis.fields.interfaces import ICommission, ICommissions
from zope.schema.interfaces import IDate, IContextSourceBinder, ISource
from themis.fields.interfaces import IDateOnly
from themis.fields.interfaces import IRadioChoice
from themis.fields.interfaces import ISubjects
from themis.fields.interfaces import ILegisSession
from themis.fields.interfaces import IContact, IContacts
from themis.fields.interfaces import IDeputy, IDeputies
from themis.fields.interfaces import IMinistry, IMinistries
from themis.fields.interfaces import IDeputyOrMinistry, IDeputiesOrMinistries
from themis.fields.interfaces import ISpeakers
from themis.fields.interfaces import IOrderedSelectAndAddWidget
from themis.fields.interfaces import IRelatedDoc
from themis.fields.interfaces import IRelatedDocs
from themis.fields.interfaces import IMailId, IMailIdWidget
from themis.fields.interfaces import IMailRefId, IMailRefIdWidget
from themis.fields.interfaces import IPreviewDoc, IPreviewDocWidget
from themis.fields.interfaces import IRelatedDocWidget, IRelatedDocsWidget
from themis.fields.interfaces import IDocHistoLineWidget, IDocHistoLine
from themis.fields.interfaces import IPointingDocs, IPointingDocsWidget

from plone.formwidget.autocomplete.interfaces import IAutocompleteWidget
from plone.formwidget.autocomplete.widget import AutocompleteSelectionWidget, AutocompleteMultiSelectionWidget

from z3c.form.browser.orderedselect import OrderedSelectWidget
from z3c.form.browser.checkbox import CheckBoxWidget
from z3c.form.browser.select import SelectWidget
from z3c.form.browser.text import TextWidget
from z3c.form.browser.radio import RadioWidget
from plone.formwidget.contenttree.widget import ContentTreeWidget, MultiContentTreeWidget

from interfaces import _

@adapter(ICommission, IFormLayer)
@implementer(IFieldWidget)
def CommissionFieldWidget(field, request):
    """IFieldWidget factory for CommissionWidget."""
    return FieldWidget(field, SelectWidget(request))

@adapter(ISubjects, IFormLayer)
@implementer(IFieldWidget)
def SubjectsFieldWidget(field, request):
    """IFieldWidget factory for SelectWidget."""
    return FieldWidget(field, CheckBoxWidget(request))

@adapter(ICommissions, IFormLayer)
@implementer(IFieldWidget)
def CommissionsFieldWidget(field, request):
    """IFieldWidget factory for SelectWidget."""
    return FieldWidget(field, CheckBoxWidget(request))

@adapter(IDeputy, IFormLayer)
@implementer(IFieldWidget)
def DeputyFieldWidget(field, request):
    """IFieldWidget factory for DeputyWidget."""
    return FieldWidget(field, SelectWidget(request))
    #return FieldWidget(field, AutocompleteSelectionWidget(request))

@adapter(IMinistry, IFormLayer)
@implementer(IFieldWidget)
def MinistryFieldWidget(field, request):
    """IFieldWidget factory for MinistryWidget."""
    return FieldWidget(field, SelectWidget(request))

@adapter(IDeputyOrMinistry, IFormLayer)
@implementer(IFieldWidget)
def DeputyOrMinistryFieldWidget(field, request):
    """IFieldWidget factory for DeputyOrMinistryWidget."""
    return FieldWidget(field, SelectWidget(request))

@adapter(IContact, IFormLayer)
@implementer(IFieldWidget)
def ContactFieldWidget(field, request):
    """IFieldWidget factory for ContactWidget."""
    return FieldWidget(field, AutocompleteSelectionWidget(request))

@adapter(IDeputies, IFormLayer)
@implementer(IFieldWidget)
def DeputiesFieldWidget(field, request):
    """IFieldWidget factory for DeputiesWidget."""
    return FieldWidget(field, OrderedSelectWidget(request))

@adapter(IMinistries, IFormLayer)
@implementer(IFieldWidget)
def MinistriesFieldWidget(field, request):
    """IFieldWidget factory for MinistriesWidget."""
    return FieldWidget(field, OrderedSelectWidget(request))

@adapter(IDeputiesOrMinistries, IFormLayer)
@implementer(IFieldWidget)
def DeputiesOrMinistriesFieldWidget(field, request):
    """IFieldWidget factory for DeputiesOrMinistriesWidget."""
    return FieldWidget(field, OrderedSelectWidget(request))

@adapter(IContacts, IFormLayer)
@implementer(IFieldWidget)
def ContactsFieldWidget(field, request):
    """IFieldWidget factory for ContactsWidget."""
    return FieldWidget(field, OrderedSelectAndAddWidget(request))

@adapter(ISpeakers, IFormLayer)
@implementer(IFieldWidget)
def SpeakersFieldWidget(field, request):
    """IFieldWidget factory for SpeakersWidget."""
    return FieldWidget(field, OrderedSelectWidget(request))

@adapter(ILegisSession, IFormLayer)
@implementer(IFieldWidget)
def LegisSessionFieldWidget(field, request):
    """IFieldWidget factory for LegisSessionWidget."""
    return FieldWidget(field, SelectWidget(request))

@adapter(IDateOnly, IFormLayer)
@implementer(IFieldWidget)
def DateOnlyFieldWidget(field, request):
    '''IFieldWidget factory for DateOnlyWidget.'''
    return FieldWidget(field, DateWidget(request))

@adapter(IDate, IFormLayer)
@implementer(IFieldWidget)
def DateFieldWidget(field, request):
    '''IFieldWidget factory for DateOnlyWidget.'''
    return FieldWidget(field, DateWidget(request))

@adapter(IRadioChoice, IFormLayer)
@implementer(IFieldWidget)
def RadioChoiceFieldWidget(field, request):
    '''IFieldWidget factory for RadioChoiceWidget'''
    return FieldWidget(field, RadioWidget(request))


class OrderedSelectAndAddWidget(OrderedSelectWidget):
    implementsOnly(IOrderedSelectAndAddWidget)

    formatItem = '''function(row, idx, count, value) { return row[1]; }'''
    formatResult = '''function(row, idx, count) { return ""; }'''


    js_template = """\
    (function($) {
        $().ready(function() {
            $('#%(id)s-iadd').autocomplete('%(url)s', {
                autoFill: false,
                minChars: 2,
                max: 10,
                mustMatch: false,
                matchContains: true,
                formatItem: %(formatItem)s,
                formatResult: %(formatResult)s
            }).result(%(js_callback)s);
        });
    })(jQuery);
    """

    def autocomplete_url(self):
        """Generate the URL that returns autocomplete results for this form
        """
        form_url = self.request.getURL()

        return "%s/++widget++%s/@@autocomplete-search" % (
            form_url, self.name )

    def js(self):
        # Use a template if it exists, in case anything overrode this interface
        js_callback = 'formwidgetadd_autocomplete_ready'
        return self.js_template % dict(id=self.id, url=self.autocomplete_url(),
            formatItem=self.formatItem, formatResult=self.formatResult,
            klass=self.klass, title=self.title,
            js_callback=js_callback)

    @property
    def source(self):
        """We need to bind the field to the context so that vocabularies
        appear as sources"""
        return self.field.bind(self.context).value_type.source

    _bound_source = None

    @property
    def bound_source(self):
        if self._bound_source is None:
            source = self.source
            if IContextSourceBinder.providedBy(source):
                source = source(self.context)
            assert ISource.providedBy(source)
            self._bound_source = source
        return self._bound_source

    def deselect(self):
        selecteditems = []
        notselecteditems = []
        for selecteditem in self.selectedItems:
            selecteditems.append(selecteditem['content'])
        for item in self.items:
            if not item['content'] in selecteditems:
                if item['value'].startswith('contact:'):
                    # skip simple contacts, to avoid the list growing too large
                    # ideally we would have something like "favourite" contacts
                    # populated automatically on usage frequence...
                    continue
                notselecteditems.append(item)
        return notselecteditems


class RelatedDocWidget(AutocompleteSelectionWidget):
    implements(IRelatedDocWidget)
    display_template = ViewPageTemplateFile('relateddoc_display.pt')
    maxResults = 50

    def get_url(self, v):
        return v

    def get_label(self, v):
        term = self.terms.getTermByToken(v)
        return term.title

    def tuples(self):
        return [(self.get_url(x), self.get_label(x)) for x in self.value]


@adapter(IRelatedDoc, IFormLayer)
@implementer(IFieldWidget)
def RelatedDocFieldWidget(field, request):
    '''IFieldWidget factory for RelatedDocWidget'''
    return FieldWidget(field, RelatedDocWidget(request))

class RelatedDocsWidget(AutocompleteMultiSelectionWidget):
    implements(IRelatedDocsWidget)
    display_template = ViewPageTemplateFile('relateddoc_display.pt')
    maxResults = 50

    def get_url(self, v):
        return v

    def get_label(self, v):
        term = self.terms.getTermByToken(v)
        return term.title

    def tuples(self):
        return [(self.get_url(x), self.get_label(x)) for x in self.value]

@adapter(IRelatedDocs, IFormLayer)
@implementer(IFieldWidget)
def RelatedDocsFieldWidget(field, request):
    '''IFieldWidget factory for RelatedDocsWidget'''
    return FieldWidget(field, RelatedDocsWidget(request))
    return FieldWidget(field, AutocompleteMultiSelectionWidget(request))
    return FieldWidget(field, MultiContentTreeWidget(request))



class MailIdWidget(TextWidget):
    implements(IMailIdWidget)

    security = ClassSecurityInfo()
    security.declareObjectPublic()

    def get_matching_object(self):
        catalog = getToolByName(self.context, 'portal_catalog')
        results = catalog(themis_mail_ref=self.value)
        objects = [x.getObject() for x in results]
        if len(objects) == 0:
            return None
        if len(objects) > 1:
            pass # should we display a warning?
        return objects[0]

    def href(self):
        object = self.get_matching_object()
        if object:
            return object.absolute_url()
        return None

    def create_href(self):
        form_url = self.request.getURL()
        from themis.config.utils import get_document_type_for_mail
        document_type = get_document_type_for_mail(self.context)
        if not document_type:
            return None
        return "%s/++widget++%s/@@createDoc" % (form_url, self.name)


class MailIdCreateDoc(BrowserView):
    def __call__(self):
        from themis.config.utils import get_document_type_for_mail, get_document_location_for_mail
        mail = self.context.context

        document_type = get_document_type_for_mail(mail)
        if document_type is None:
            IStatusMessage(self.request).add(_(u"No associated document type"), 'warning')
            return self.request.response.redirect(mail.absolute_url())

        document_location = get_document_location_for_mail(mail)
        if not document_location:
            IStatusMessage(self.request).add(_(u"No associated document location"), 'warning')
            return self.request.response.redirect(mail.absolute_url())

        folder = getToolByName(self.context, 'portal_url').getPortalObject()
        for part in document_location.split('/'):
            if not part:
                continue
            folder = getattr(folder, part)

        folder.invokeFactory(document_type, id=mail.id, title=mail.title,
                             mail_ref_id=mail.numero_courrier)
        document_object = getattr(folder, mail.id)

        return self.request.response.redirect(document_object.absolute_url())

@adapter(IMailId, IFormLayer)
@implementer(IFieldWidget)
def MailIdFieldWidget(field, request):
    """IFieldWidget factory for MailId"""
    return FieldWidget(field, MailIdWidget(request))


class MailRefIdWidget(TextWidget):
    implements(IMailRefIdWidget)

    def href(self):
        catalog = getToolByName(self.context, 'portal_catalog')
        results = catalog(themis_mail_number=self.value)
        objects = [x.getObject() for x in results]
        if len(objects) == 0:
            return ''
        if len(objects) > 1:
            pass # should we display a warning?
        return objects[0].absolute_url()


@adapter(IMailRefId, IFormLayer)
@implementer(IFieldWidget)
def MailRefIdFieldWidget(field, request):
    """IFieldWidget factory for MailRefId"""
    return FieldWidget(field, MailRefIdWidget(request))



class DocHistoLineWidget(Widget):
    implements(IDocHistoLineWidget)

    def extract(self, default=NOVALUE):
        from themis.fields import DocHistoLine
        if not (self.name + '.comment') in self.request.form:
            return NOVALUE
        dochistoline = DocHistoLine()
        has_value = None
        for attr in ('comment', ):
            setattr(dochistoline, attr, self.request.get(self.name + '.' + attr))
            has_value = has_value or getattr(dochistoline, attr)
        if not has_value:
            return NOVALUE
        return dochistoline

@adapter(IDocHistoLine, IFormLayer)
@implementer(IFieldWidget)
def DocHistoLineFieldWidget(field, request):
    return FieldWidget(field, DocHistoLineWidget(request))

class DocHistoLineConverter(BaseDataConverter):
    adapts(IDocHistoLine, IDocHistoLineWidget)

    def toWidgetValue(self, value):
        print 'XXX, histoline converter, to widget value!'
        from themis.fields import DocHistoLine
        if value is None:
            return DocHistoLine()
        return value

    def toFieldValue(self, value):
        print 'XXX, to field value'
        return value


@adapter(IPreviewDoc, IFormLayer)
@implementer(IFieldWidget)
def PreviewDocFieldWidget(field, request):
    """IFieldWidget factory for PreviewDoc"""
    return FieldWidget(field, PreviewDocWidget(request))

class PreviewDocWidget(Widget):
    implements(IPreviewDocWidget)

    security = ClassSecurityInfo()
    security.declareObjectPublic()

    def width(self):
        if hasattr(self.field, 'width'):
            return self.field.width
        return u'710px'

    def height(self):
        if hasattr(self.field, 'height'):
            return self.field.height
        return u'910px'

    def get_attribute_name(self):
        if hasattr(self.field, 'attribute_name') and self.field.attribute_name:
            return self.field.attribute_name
        else:
            return 'fichier'

    def href(self):
        if not hasattr(self.context, self.get_attribute_name()):
            return None
        form_url = self.request.getURL()
        return "%s/++widget++%s/@@file" % (form_url, self.name)

    def filename(self):
        if not hasattr(self.context, self.get_attribute_name()):
            return ''
        if getattr(self.context, self.get_attribute_name()):
            if self.form.widgets[self.get_attribute_name()].filename_encoded:
                return self.form.widgets[self.get_attribute_name()].filename_encoded
            return 'unknown.pdf'
        return ''

class PreviewDocFile(BrowserView):

    def validate_access(self):
        # copied from autocompletewidget

        content = self.context.form.context

        # If the object is not wrapped in an acquisition chain
        # we cannot check any permission.
        if not IAcquirer.providedBy(content):
            return

        url = self.request.getURL()
        view_name = url[len(content.absolute_url()):].split('/')[1]

        # May raise Unauthorized

        # If the view is 'edit', then traversal prefers the view and
        # restrictedTraverse prefers the edit() method present on most CMF
        # content. Sigh...
        if not view_name.startswith('@@') and not view_name.startswith('++'):
            view_name = '@@' + view_name

        view_instance = content.restrictedTraverse(view_name)
        sm = getSecurityManager()
        sm.validate(content, content, view_name, view_instance)


    def __call__(self):
        self.validate_access()
        file = getattr(self.context.context, self.context.get_attribute_name())
        if file.contentType:
            self.request.response.setHeader('Content-type', file.contentType)
        else:
            self.request.response.setHeader('Content-type', 'application/octet-stream')
        return file.data


@adapter(IPointingDocs, IFormLayer)
@implementer(IFieldWidget)
def PointingDocsFieldWidget(field, request):
    """IFieldWidget factory for PointingDocs"""
    return FieldWidget(field, PointingDocsWidget(request))

class PointingDocsWidget(Widget):
    implements(IPointingDocsWidget)

    def pointing_docs(self):
        from plone.dexterity.content import Item
        if not isinstance(self.context, Item):
            # we do not want to call intids.getId on TypeSchemaContext (which
            # is passed as self.context when viewing the type in dexterity
            # through-the-web edit schema page) as this will get some deep part
            # of zope zodb/transaction layer in trouble.
            return []
        intids = component.getUtility(IIntIds)
        catalog = component.getUtility(ICatalog)
        try:
            doc_intid = intids.getId(self.context)
        except KeyError:
            return []
        pointing_docs = [x for x in catalog.findRelations({'to_id': doc_intid})]
        return pointing_docs