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

    See the file LICENSE for copying permission.
"""

from base64 import b64encode, b64decode

from slixmpp.util import bytes
from slixmpp.xmlstream import ET, ElementBase, register_stanza_plugin


class Data(ElementBase):
    name = 'data'
    namespace = 'urn:xmpp:avatar:data'
    plugin_attrib = 'avatar_data'
    interfaces = {'value'}

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

    def set_value(self, value):
        if value:
            self.xml.text = b64encode(bytes(value)).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 = {'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)