#!/usr/bin/python

import cgi

import my_db

from htmltmpl import TemplateManager, TemplateProcessor

from os import environ

from urlparse import urljoin

def get_keywords(form, name):

	kws = form.getvalue(name)

	if not isinstance(kws, type([])):

		if kws:

			kws = [kws]

		else:

			kws = []

	return map(int, kws)

def set_selection(db, bk, sel, exc = []):

	if len(bk) > 0:

		ids, names = map(list,apply(zip,db.get_keywords(bk)))

		for key in exc:

			if key not in ids:

				ids.append(key)

				names.append(db.get_keyword(key))

		allkw = map(lambda x,y: [x, y], ids, names)

	else:

		allkw = db.get_all_keywords()

	(kw, cnt) = map(list,apply(zip, db.get_keywords_count(bk)))

	res = []

	for key in allkw:

		is_selected = key[0] in sel

		is_excluded = key[0] in exc

		is_unselected = not (is_selected or is_excluded)

		if key[0] in kw:

			kcnt = cnt[kw.index(key[0])]

		else:

			kcnt = 0

		res.append({'id':key[0],

			'keyword': key[1],

			'count' : kcnt,

			'selected' : is_selected,

			'excluded' : is_excluded,

			'unselected' : is_unselected})

	return res

def sort_keywords(kw, pref):

	global _sk_rev_fact

	global _sk_sort

	if pref['keywords_reverse']:

		_sk_rev_fact = -1

	else:

		_sk_rev_fact = 1

	_sk_sort = pref['keywords_sort'] 

	kw.sort(lambda l, r: _sk_rev_fact*cmp(l[_sk_sort], r[_sk_sort]))

	return kw

def get_curl():

	return urljoin( 'http://' + environ["HTTP_HOST"] + environ["REQUEST_URI"], 'add.py')

def load_index(db):

    	keywords = set_selection(db, [], [], [])

    	exc = map(lambda e: int(e['id']), keywords[1:])

   	bookmarks = db.select_bookmarks([0], exc)

    	total = keywords[0]['count']

	if len(bookmarks)>0:

    		bookmarks = db.get_bookmarks(map(lambda x: x[0], bookmarks))

    	bookmarks = map(lambda bk: bk.dict(), bookmarks)

	pref = db.get_preferences()

    	process_index(bookmarks, keywords[1:], pref)

def get_template_processor(prefs):

    tproc = TemplateProcessor()

    tproc.set("remote_user", environ["REMOTE_USER"])

    tproc.set("kw_size", prefs['keywords_box'])

    tproc.set("kw_sort", prefs['keywords_sort'])

    tproc.set("kw_reverse", prefs['keywords_reverse'])

    return tproc

def process_index(bk, kw, pref):

    tmpl = TemplateManager().prepare("index.tmpl")

    tproc = get_template_processor(pref)

    bk.sort(lambda x,y: cmp(x['name'],y['name']))

    tproc.set("Bookmarks", bk)

    kw = sort_keywords(kw, pref)

    tproc.set("Keywords", kw)

    tproc.set("curl", get_curl())

    tproc.set("total", len(bk))

    print tproc.process(tmpl)