"""
open/dulcinea/lib/ui/item.qpy
"""
from dulcinea.attachable import Attachable
from dulcinea.ui.lib.search import highlight_keywords
from qp.fill.form import Form
from qp.fill.html import href, url_quote
from qp.pub.common import get_user, get_request, get_response, redirect
from qp.pub.common import header, footer

def delete_item_form(item, item_db):
    """(item : Item, item_db : ItemFolder)
    """
    form = Form()
    form.add_submit("delete", "Delete")
    form.add_submit("cancel", "Cancel")

    if form.get("cancel"):
        redirect(".")

    def render:xml(title):
        header(title=title)
        '<p>Delete item "%s"?</p>' % item.get_title()
        form.render()
        footer(title)

    if not form.is_submitted():
        return render("Delete %s" % item.get_title())

    item_db.remove(item)
    redirect("..")


def format_action_links:xml(item):
    '<span class="boxsubtitle">'
    href('edit', '[Edit]')
    '&nbsp;'
    href('delete', '[Delete]')
    if isinstance(item, Attachable):
        '&nbsp;'
        href('file/', '[Files]')

def format_item_title:xml(item, keywords=None):
    if keywords:
        title = highlight_keywords(item.get_title(), keywords)
        querystring = '?keywords=%s' % url_quote(keywords)
    else:
        title = item.get_title()
        querystring = ''
    href("%s%s" % (item.get_local_url(), querystring), title)
    if not item.is_approved():
        '&nbsp;'
        '<span style="color: red">(Unapproved)</span>'

def sort_by_timestamp(L):
    # sort_by_timestamp(L:list)
    # Sort the provided list of objects by timestamp,  mutating the list that's
    # passed in.
    def get_timestamp(x):
        return x.get_timestamp()
    L.sort(key=get_timestamp)

def list_dated_items:xml(items, format_html):
    #(items : [Items])
    #
    #   Category the items into regions posted on the same day

    last_date = None
    categorized_list = []

    sort_by_timestamp(items)
    for item in items:
        if item.get_timestamp().date() != last_date:
            # Different date?  If so, create a new sublist
            categorized_list.append( [] )
            last_date = item.get_timestamp().date()

        categorized_list[-1].append(item)

    # Now that we've categorized them, display them.
    for day_list in categorized_list:
        '<h4>%s</h4>' % day_list[0].get_timestamp().date()
        "<ul>"
        for item in day_list:
            '<li style="list-style-type: none">'
            format_html(item)
            '</li>'
        "</ul>"


    
def list_to_oldest_date:xml(what, item_db, interval, oldest_date, format_html):
    items = item_db.get_to_oldest_date(oldest_date, 
        include_unapproved=get_user().is_admin())
    if oldest_date is not None:
        "<p>%s postings for %s.</p>" % (what.capitalize(), interval)
    list_dated_items(items, format_html)


def display_rss:xml(item_db, format_item_rss, site_preamble):
    items = item_db.get_recent_items(count=10)
    get_response().set_content_type(str('text/xml'), str('utf-8'))
    """<?xml version="1.0" encoding="ISO-8859-1" ?>
    <rss version="0.92">
    <channel>
    """
    site_preamble
    servername = get_request().get_server()
    for item in items:
        format_item_rss(item, servername)
    "</channel></rss>"