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#!/usr/bin/env python2.4

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#

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# DeGAL - A pretty simple web image gallery

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# Copyright (C) 2007 Tero Marttila

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# http://marttila.de/~terom/degal/

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#

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# This program is free software; you can redistribute it and/or modify

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# it under the terms of the GNU General Public License as published by

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# the Free Software Foundation; either version 2 of the License, or

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# (at your option) any later version.

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#

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# This program is distributed in the hope that it will be useful,

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# but WITHOUT ANY WARRANTY; without even the implied warranty of

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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

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# GNU General Public License for more details.

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#

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# You should have received a copy of the GNU General Public License

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# along with this program; if not, write to the

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# Free Software Foundation, Inc.,

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# 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

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#

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import os

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import cgi

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import Cookie

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import inc

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from lib import shorturl, template, utils, settings

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#

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# load request params

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#

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vars = cgi.FieldStorage()

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# these are interpeted different ways, hence the generic naming

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arg1 = vars["keys"].value

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if 'index' in vars :

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    arg2 = vars["index"].value

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else :

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    arg2 = None

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# the cookie with the user's current series

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cookie = Cookie.SimpleCookie(os.environ.get('HTTP_COOKIE', None))

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# a special action?

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if arg1 and arg1 in ('add', 'del', 'clear', 'view') or arg2 == 'load' :

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    # load the keys from the cookie

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    if 'series' in cookie :

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        keys = cookie["series"].value.split()

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    else :

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        keys = []

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    if arg2 == 'load' :

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        # set the keys in the user's cookie to those in the URL

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        keys = arg1.split()

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    elif arg1 == 'add' and arg2 not in keys :

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        # add a code to the list of keys

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        keys.append(arg2)

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    elif arg1 == 'del' and arg2 in keys :

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        # remove a key from the list of keys

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        keys.remove(arg2)

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    elif arg1 == 'clear' :

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        # clear out the set of keys

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        keys = []

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    elif arg1 == 'view' :

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        # just view them

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        pass

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    # set the series cookie value

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    cookie['series'] = ' '.join(keys)

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    cookie['series']['path'] = '/'

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    # if we have keys, redirect to them, otherwise, back to index we go

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    if keys :

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        redirect_to = "../%s/" % ('+'.join(keys))

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    else :

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        redirect_to = "../.."

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    # do the redirect

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    print "Status: 302"

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    print "Location: %s" % redirect_to

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    print cookie

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    print

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    print "Redirect..."

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else :

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    # we're just viewing

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    keys = arg1.split()

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    # is this "My Series"?

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    my_series = 'series' in cookie and cookie['series'].value.split() == keys

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    index = fname = None

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    if arg2 :

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        try :

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            index = int(arg2)

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        except ValueError :

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            fname = arg2

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    # our custom Series/Image classes, because they do act slightly differently

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    class Series (object) :

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        def __init__ (self, keys) :

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            self.images = []

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            prev = None

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            self.image_dict = dict()

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                img = Image(self, key, dir, fname, index)

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                self.images.append(img)

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                self.image_dict[fname] = img

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                img.prev = prev

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                if prev :

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                    prev.next = img

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                prev = img

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        def render (self) :

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            if my_series :

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                descr = '<a href="../clear/" rel="nofollow">Clear your series</a>'

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            else :

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                descr = '<a href="load" rel="nofollow">Load as your series</a>'

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            return template.gallery.render(

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                stylesheet_url      = utils.url("style.css", up=2),

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                breadcrumb          = [(utils.url(up=1), "Index"), (utils.url(), "Series")],

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                dirs                = None,

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                title               = "Series",

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                num_pages           = 1,

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                cur_page            = 0,

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                images              = self.images,

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                description         = descr,

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                shorturl            = None,

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                shorturl_code       = None,

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            )

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    class Image (object) :

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        def __init__ (self, series, key, dir, fname, index) :

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            self.fname = fname

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            self.name = utils.url_join(dir, fname, abs=True)

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            self.html_name = utils.url(fname)

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            self.real_html_name = utils.url_join(dir, fname + ".html", abs=True)

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            self.thumb_name = utils.url_join(dir, settings.THUMB_DIR, fname, abs=True)

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            self.preview_name = utils.url_join(dir, settings.PREVIEW_DIR, fname, abs=True)

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            self.shorturl = key

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            self.prev = self.next = None

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        def render (self) :

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            descr = '<span style="font-size: x-small"><a href="%s.html">Standalone image</a></span>' % self.real_html_name

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            if my_series :

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                series_url = utils.url_join("del", self.shorturl, up=1)

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                series_verb = "Remove from"

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            else :

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                series_url = series_verb = ""

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            return template.image.render(

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                stylesheet_url      = utils.url("style.css", up=3),

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                breadcrumb          = [(utils.url(up=2), "Index"), (utils.url("."), "Series"), (self.html_name, self.fname)],

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                title               = self.fname,

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                prev                = self.prev,

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                img                 = self,

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                next                = self.next,

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                description         = descr,

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                img_size            = None,

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                file_size           = None,

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                timestamp           = None,

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                shorturl            = utils.url_join("s", self.shorturl, abs=True),

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                shorturl_code       = self.shorturl,

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                series_url          = series_url,

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                series_verb         = series_verb,

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            )

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    series = Series(keys)

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    if fname :

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        html = series.image_dict[fname].render()

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    elif index :

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        html = series.images[index - 1].render()

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    else :

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        html = series.render()

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    print "Content-Type: text/html"

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    print

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    print html

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