from __future__ import absolute_import

from openpyxl.descriptors.serialisable import Serialisable
from openpyxl.descriptors import (
    String,
    Sequence,
)
from openpyxl.descriptors.excel import Relation


class Hyperlink(Serialisable):

    tagname = "hyperlink"

    ref = String()
    location = String(allow_none=True)
    tooltip = String(allow_none=True)
    display = String(allow_none=True)
    id = Relation()
    target = String(allow_none=True)

    __attrs__ = ("ref", "location", "tooltip", "display", "id")

    def __init__(self,
                 ref=None,
                 location=None,
                 tooltip=None,
                 display=None,
                 id=None,
                 target=None,
                ):
        self.ref = ref
        self.location = location
        self.tooltip = tooltip
        self.display = display
        self.id = id
        self.target = target


class HyperlinkList(Serialisable):

    tagname = "hyperlinks"

    hyperlink = Sequence(expected_type=Hyperlink)

    def __init__(self, hyperlink=()):
        self.hyperlink = hyperlink


    def __bool__(self):
        return bool(self.hyperlink)

    __nonzero__ = __bool__


    def __len__(self):
        return len(self.hyperlink)


    def append(self, value):
        values = self.hyperlink[:]
        values.append(value)
        if not value.id:
            value.id = "rId{0}".format(len(values))
        self.hyperlink = values
