"""
    SleekXMPP: The Sleek XMPP Library
    Copyright (C) 2012 Nathanael C. Fritz, Lance J.T. Stout
    This file is part of SleekXMPP.

    See the file LICENSE for copying permission.
"""

from base64 import b64encode, b64decode

from sleekxmpp.util import bytes as sbytes
from sleekxmpp.xmlstream import ET, ElementBase, register_stanza_plugin


class Data(ElementBase):
    name = 'data'
    namespace = 'urn:xmpp:avatar:data'
    plugin_attrib = 'avatar_data'
    interfaces = set(['value'])

    def get_value(self):
        if self.xml.text:
            return b64decode(sbytes(self.xml.text))
        return ''

    def set_value(self, value):
        if value:
            self.xml.text = b64encode(sbytes(value))
            # Python3 base64 encoded is bytes and needs to be decoded to string
            if isinstance(self.xml.text, bytes):
                self.xml.text = self.xml.text.decode()
        else:
            self.xml.text = ''

    def del_value(self):
        self.xml.text = ''


class MetaData(ElementBase):
    name = 'metadata'
    namespace = 'urn:xmpp:avatar:metadata'
    plugin_attrib = 'avatar_metadata'
    interfaces = set()

    def add_info(self, id, itype, ibytes, height=None, width=None, url=None):
        info = Info()
        info.values = {'id': id,
                       'type': itype,
                       'bytes': '%s' % ibytes,
                       'height': height,
                       'width': width,
                       'url': url}
        self.append(info)

    def add_pointer(self, xml):
        if not isinstance(xml, Pointer):
            pointer = Pointer()
            pointer.append(xml)
            self.append(pointer)
        else:
            self.append(xml)


class Info(ElementBase):
    name = 'info'
    namespace = 'urn:xmpp:avatar:metadata'
    plugin_attrib = 'info'
    plugin_multi_attrib = 'items'
    interfaces = set(['bytes', 'height', 'id', 'type', 'url', 'width'])


class Pointer(ElementBase):
    name = 'pointer'
    namespace = 'urn:xmpp:avatar:metadata'
    plugin_attrib = 'pointer'
    plugin_multi_attrib = 'pointers'
    interfaces = set()


register_stanza_plugin(MetaData, Info, iterable=True)
register_stanza_plugin(MetaData, Pointer, iterable=True)
