import html
from typing import List

from bookmarks.models import Bookmark

BookmarkDocument = List[str]


def export_netscape_html(bookmarks: List[Bookmark]):
    doc = []
    append_header(doc)
    append_list_start(doc)
    [append_bookmark(doc, bookmark) for bookmark in bookmarks]
    append_list_end(doc)

    return '\n\r'.join(doc)


def append_header(doc: BookmarkDocument):
    doc.append('<!DOCTYPE NETSCAPE-Bookmark-file-1>')
    doc.append('<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8">')
    doc.append('<TITLE>Bookmarks</TITLE>')
    doc.append('<H1>Bookmarks</H1>')


def append_list_start(doc: BookmarkDocument):
    doc.append('<DL><p>')


def append_bookmark(doc: BookmarkDocument, bookmark: Bookmark):
    url = bookmark.url
    title = html.escape(bookmark.resolved_title or '')
    desc = html.escape(bookmark.resolved_description or '')
    tags = ','.join(bookmark.tag_names)
    toread = '1' if bookmark.unread else '0'
    private = '0' if bookmark.shared else '1'
    added = int(bookmark.date_added.timestamp())

    doc.append(f'<DT><A HREF="{url}" ADD_DATE="{added}" PRIVATE="{private}" TOREAD="{toread}" TAGS="{tags}">{title}</A>')

    if desc:
        doc.append(f'<DD>{desc}')


def append_list_end(doc: BookmarkDocument):
    doc.append('</DL><p>')
