import os.path
import Missing
from AccessControl import getSecurityManager
from Products.CMFCore.utils import getToolByName
from five import grok
from z3c.table import interfaces
from zope.i18nmessageid import MessageFactory
from zope.i18n import translate
import z3c.table.table
import z3c.table.column
from Products.CMFCore.WorkflowCore import WorkflowException
import plone.api

from collective.dms.basecontent import _

PMF = MessageFactory('plone')

grok.templatedir('templates')


class Column(z3c.table.column.Column, grok.MultiAdapter):
    grok.baseclass()
    grok.provides(interfaces.IColumn)


def get_value(item, attribute, default=None):
    try:
        value = getattr(item, attribute)
        if value is Missing.Value:
            return default
    except AttributeError:
        obj = item.getObject()
        value = getattr(obj, attribute, default)

    if callable(value):
        value = value()

    return value


class DateColumn(Column):
    grok.baseclass()
    attribute = NotImplemented

    def renderCell(self, item):
        value = get_value(item, self.attribute)
        return self.table.format_date(value)


class DateTimeColumn(Column):
    grok.baseclass()
    attribute = NotImplemented

    def renderCell(self, item):
        value = get_value(item, self.attribute)
        return self.table.format_date(value, long_format=True)


class PrincipalColumn(Column):
    grok.baseclass()
    attribute = NotImplemented

    def renderCell(self, item):
        value = get_value(item, self.attribute, default=())

        if not isinstance(value, (list, tuple)):
            value = (value,)

        gtool = getToolByName(plone.api.portal.get(), 'portal_groups')
        mtool = getToolByName(plone.api.portal.get(), 'portal_membership')
        principals = []
        for principal_id in value:
            user = mtool.getMemberById(principal_id)
            if user is not None:
                principals.append(user.getProperty('fullname', None) or user.getId())
            else:
                group = gtool.getGroupById(principal_id)
                if group is not None:
                    principals.append(group.getProperty('title', None) or group.getId())

        return ', '.join(principals).decode('utf-8')


class LinkColumn(z3c.table.column.LinkColumn, Column):
    grok.baseclass()

    def getLinkURL(self, item):
        """Setup link url."""
        if self.linkName is not None:
            return '%s/%s' % (item.getURL(), self.linkName)
        return item.getURL()


class TitleColumn(LinkColumn):
    grok.baseclass()
    header = PMF("Title")
    weight = 10

    def getLinkContent(self, item):
        title = get_value(item, 'Title')
        if isinstance(title, unicode):
            return title
        else:
            return unicode(title, 'utf-8', 'ignore')


class IconColumn(object):
    cssClasses = {'td': 'icon-column'}

    def getLinkContent(self, item):
        content = super(IconColumn, self).getLinkContent(item)
        return u"""<img title="%s" src="%s" />""" % (
                content,
                '%s/%s' % (self.table.portal_url, self.iconName))


class DeleteColumn(IconColumn, LinkColumn):
    grok.baseclass()
    header = u""
    weight = 9
    linkName = "delete_confirmation"
    linkContent = PMF('Delete')
    linkCSS = 'edm-delete-popup'
    iconName = "++resource++delete_icon.png"
    linkContent = PMF(u"Delete")

    def actionAvailable(self, item):
        obj = item.getObject()
        sm = getSecurityManager()
        return sm.checkPermission('Delete objects', obj)

    def renderCell(self, item):
        if not self.actionAvailable(item):
            return u""

        return super(DeleteColumn, self).renderCell(item)


class DownloadColumn(IconColumn, LinkColumn):
    grok.baseclass()
    header = u""
    weight = 1
    linkName = "@@download"
    iconName = "download_icon.png"
    linkContent = _(u"Download file")


class ExternalEditColumn(IconColumn, LinkColumn):
    grok.baseclass()
    header = u""
    weight = 3
    linkName = "@@external_edit"
    iconName = "++resource++extedit_icon.png"
    linkContent = PMF(u"Edit with external application")

    def actionAvailable(self, item):
        obj = item.getObject()
        sm = getSecurityManager()
        if not sm.checkPermission('Modify portal content', obj):
            return False

        if obj.file is None:
            return False

        ext = os.path.splitext(obj.file.filename)[-1].lower()
        if ext in (u'.pdf', u'.jpg', '.jpeg'):
            return False

        if not obj.restrictedTraverse('@@externalEditorEnabled').available():
            return False

        return True

    def renderCell(self, item):
        if not self.actionAvailable(item):
            return u""

        return super(ExternalEditColumn, self).renderCell(item)


class EditColumn(IconColumn, LinkColumn):
    grok.baseclass()
    header = u""
    weight = 2
    linkName = "edit"
    iconName = "edit.png"
    linkContent = PMF(u"Edit")
    linkCSS = 'overlay-form-reload'

    def actionAvailable(self, item):
        obj = item.getObject()
        sm = getSecurityManager()
        return sm.checkPermission('Modify portal content', obj)

    def renderCell(self, item):
        if not self.actionAvailable(item):
            return u""

        return super(EditColumn, self).renderCell(item)


class StateColumn(Column):
    grok.baseclass()
    header = PMF(u"State")
    weight = 50

    def renderCell(self, item):
        try:
            wtool = self.table.wtool
            portal_type = get_value(item, 'portal_type')
            review_state = get_value(item, 'review_state')
            if not review_state:
                return u""
            state_title = wtool.getTitleForStateOnType(review_state,
                                                       portal_type)
            return translate(PMF(state_title), context=self.request)
        except WorkflowException:
            return u""


class LabelColumn(Column):
    grok.baseclass()
    attribute = NotImplemented

    def renderCell(self, item):
        value = get_value(item, self.attribute)
        if value is None:
            value = ''
        return value