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#!/usr/bin/python
#
# Author: Rodney Dawes <rodney.dawes@canonical.com>
#
# Copyright 2009 Canonical Ltd.
#
# This program is free software: you can redistribute it and/or modify it
# under the terms of the GNU General Public License version 3, as published
# by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranties of
# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR
# PURPOSE.  See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program.  If not, see <http://www.gnu.org/licenses/>.

from __future__ import with_statement

import pygtk
pygtk.require('2.0')
import gobject
import gtk
import pango

import os
import re
import subprocess
import sys

from xdg.BaseDirectory import xdg_cache_home
from xdg.BaseDirectory import xdg_config_home

from threading import Thread

from launchpadlib.launchpad import Launchpad, EDGE_SERVICE_ROOT
from launchpadlib.credentials import Credentials

VOTES = { "Approve" : "#00ff00",
          "Needs Fixing" : "#993300",
          "Disapprove" : "#ff0000",
          "Resubmit" : "#ff0000",
          "Pending" : "#ff6600",
          "Abstain" : "#909090",
          "Needs Information" : "#909090",
          }

class Window(gtk.Window):

      def __init__(self):
            gtk.Window.__init__(self)
            self.set_title("Pending Reviews")
            self.set_default_size(320, 400)
            self.connect("destroy", lambda w: gtk.main_quit())
            self.connect("delete_event", lambda w: gtk.main_quit())

            vbox = gtk.VBox()
            self.add(vbox)
            vbox.show()

            toolbar = gtk.Toolbar()
            vbox.pack_start(toolbar, expand=False, fill=False)
            toolbar.show()

            button = gtk.ToolButton(gtk.STOCK_PREFERENCES)
            button.connect("clicked", self.__edit_prefs)
            toolbar.insert(button, -1)
            button.show()

            self.store = gtk.ListStore(str, str)

            view = gtk.TreeView(self.store)
            view.connect("row-activated", self.__open_link)
            vbox.add(view)
            view.show()

            cell = gtk.CellRendererText()
            col = gtk.TreeViewColumn("Branch", cell, markup=0)
            view.append_column(col)

            self.cachedir = os.path.join(xdg_cache_home, "review-list")
            credsfile = os.path.join(self.cachedir, "credentials")

            if not os.path.isdir(self.cachedir):
                  os.makedirs(self.cachedir)

            if os.path.exists(credsfile):
                  creds = Credentials()

                  with file(credsfile) as f:
                        creds.load(f)
                  self.launchpad = Launchpad(creds, EDGE_SERVICE_ROOT)
            else:
                  self.launchpad = Launchpad.get_token_and_login(
                        'review-list',
                        EDGE_SERVICE_ROOT,
                        self.cachedir)
                  with file(credsfile, "w") as f:
                        self.launchpad.credentials.save(f)

            self.me = self.launchpad.me

            self.show()

            # Need to move this to a config file instead of hardcoding
            self.projects = [ ]
            for arg in sys.argv:
                  if arg is not sys.argv[0]:
                        self.projects.append(arg)

            projectlst = os.path.join(xdg_config_home, "review-tools", "project-list")
            try:
                f = open(projectlst)
                prjlist = f.readlines()
                for i in prjlist:
                    self.projects.append(i.strip())
                f.close
            except IOError:
                print "IO Error"
            except:
                pass

            if len(self.projects) == 0:
                print "No projects specified"
                sys.exit(1)

            self.thread = None

            self.__timeout()
            self.id = gobject.timeout_add_seconds(5 * 60, self.__timeout)

      def __edit_prefs(self, button, data=None):
            print "Need a prefs dialog"

      def __open_link(self, view, path, column, data=None):
            row = self.store.get_iter(path)
            url, = self.store.get(row, 1)
            ret = subprocess.call(["xdg-open", url])
            if ret != 0:
                  sys.stderr.write("Failed to run 'xdg-open %s'\n" % url)

      def __load_merges(self):
            for project in self.projects:
                  lp_project = None
                  try:
                        lp_project = self.launchpad.projects[project]
                  except AttributeError:
                        print "Project %s has no development focus." % project
                        continue
                  except KeyError:
                        print "Project %s not found." % project
                        continue

                  for c in lp_project.getMergeProposals(status="Needs review"):
                        votes = {}
                        for key in VOTES.keys():
                              votes[key] = 0

                        for vote in c.votes:
                              if not vote.comment:
                                    continue
                              else:
                                    votes[vote.comment.vote] += 1

                        for key in votes.keys():
                              if votes[key] == 0:
                                    votes.pop(key, None)

                        vstr = ", ".join(
                              ["<span color='%s'>%s</span>: %d" \
                                     % (VOTES[key], key, votes[key]) \
                                     for key in votes.keys()]
                              )
                        if vstr == "":
                              vstr = "No Reviews"
                        status = "%s\n%s" % (c.source_branch.display_name,
                                             vstr)
                        urlp = re.compile(
                              'http[s]?://api\.(.*)launchpad\.net/beta/')
                        merge_url = urlp.sub(
                              'http://launchpad.net/', c.self_link)

                        self.store.append((status, merge_url))
#            self.thread.join()
            
      def __timeout(self):
            self.store.clear()
            self.__load_merges()
#            if self.thread and self.thread.isAlive():
#                  return True

#            if self.thread is None:
#                  thread = Thread(target=self.__load_merges)

#            thread.start()
            return True

if __name__ == "__main__":
      win = Window()
      win.show()
      gtk.main()