from Products.CMFCore.CMFCorePermissions import SetOwnPassword
from Products.CMFCore.utils import getToolByName
from Products.CMFDefault.MembershipTool import MembershipTool as BaseTool
from Products.CMFPlone import ToolNames
from OFS.Image import Image
from AccessControl import ClassSecurityInfo, getSecurityManager
from Globals import InitializeClass
from Acquisition import aq_base, aq_parent, aq_inner
from Products.CMFCore.CMFCorePermissions import View
from Products.CMFPlone.PloneBaseTool import PloneBaseTool

from utils import scale_image
from Globals import InitializeClass, DTMLFile
from ZODB.POSException import ConflictError
from Products.CMFCore.utils import _checkPermission

from Products.CMFPlone.MembershipTool import MembershipTool
    
def changeMemberPortrait(self, portrait, member_id=None):
    """
    given a portrait we will modify the users portrait
    we put this method here because we do not want
    .personal or portrait in the catalog
    """
    if not member_id:
        member_id = self.getAuthenticatedMember().getUserName()

    if portrait and portrait.filename:
        scaled, mimetype = scale_image(portrait)
        portrait = Image(id=member_id, file=scaled, title='')
        membertool   = getToolByName(self, 'portal_memberdata')
        membertool._setPortrait(portrait, member_id)



def getBadMembers(self):
    """Will search for members with bad images in the portal_memberdata
    delete their portraits and return their member ids"""
    memberdata = getToolByName(self, 'portal_memberdata')
    portraits = getattr(memberdata, 'portraits', None)
    if portraits is None:
        return []
    bad_member_ids = []
    TXN_THRESHOLD = 50
    counter = 1
    for member_id in tuple(portraits.objectIds()):
        portrait = portraits[member_id]
        portrait_data = str(portrait.data)
        if portrait_data == '':
            continue
        try:
            img = PIL.Image.open(StringIO(portrait_data))
        except ConflictError:
            pass
        except:
            # Anything else we have a bad bad image and we destroy it
            # and ask questions later.
            portraits._delObject(member_id)
            bad_member_ids.append(member_id)
        if not counter%TXN_THRESHOLD:               
            get_transaction().commit()
        counter = counter + 1

    return bad_member_ids

MembershipTool.manage_options = (MembershipTool.manage_options +
                      ( { 'label' : 'Portraits'
                     , 'action' : 'manage_portrait_fix'
                     },))
MembershipTool.security = ClassSecurityInfo()
MembershipTool.security.declareProtected('Manage Portal', 'manage_portrait_fix')
MembershipTool.manage_portrait_fix = DTMLFile('www/portrait_fix', globals())
MembershipTool.security.declareProtected('Manage Portal', 'getBadMembers')
MembershipTool.getBadMembers = getBadMembers

InitializeClass(MembershipTool)