#!/usr/bin/env python
# encoding: utf-8
# changeset controller for pylons
# Copyright (C) 2009-2010 Marcin Kuzminski <marcin@python-works.com>
 
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; version 2
# of the License or (at your opinion) any later version of the license.
# 
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY 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, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
# MA  02110-1301, USA.
"""
Created on April 25, 2010
changeset controller for pylons
@author: marcink
"""
from pylons import tmpl_context as c
from pylons_app.lib.auth import LoginRequired
from pylons_app.lib.base import BaseController, render
from pylons_app.model.hg_model import HgModel
from vcs.utils import diffs as differ
import logging
from vcs.nodes import FileNode


log = logging.getLogger(__name__)

class ChangesetController(BaseController):
    
    @LoginRequired()
    def __before__(self):
        super(ChangesetController, self).__before__()
        
    def index(self, revision):
        hg_model = HgModel()
        c.changeset = hg_model.get_repo(c.repo_name).get_changeset(revision)
        c.changeset_old = c.changeset.parents[0]
        c.changes = []
        
                
        for node in c.changeset.added:
            filenode_old = FileNode(node.path, '')
            if filenode_old.is_binary or node.is_binary:
                diff = 'binary file'
            else:    
                f_udiff = differ.get_udiff(filenode_old, node)
                diff = differ.DiffProcessor(f_udiff).as_html()
                try:
                    diff = unicode(diff)
                except:
                    log.warning('Decoding failed of %s', filenode_old)
                    log.warning('Decoding failed of %s', node)
                    diff = 'unsupported type'
            cs1 = None
            cs2 = node.last_changeset.raw_id                                        
            c.changes.append(('added', node, diff, cs1, cs2))
            
        for node in c.changeset.changed:
            filenode_old = c.changeset_old.get_node(node.path)
            if filenode_old.is_binary or node.is_binary:
                diff = 'binary file'
            else:    
                f_udiff = differ.get_udiff(filenode_old, node)
                diff = differ.DiffProcessor(f_udiff).as_html()
                try:
                    diff = unicode(diff)
                except:
                    log.warning('Decoding failed of %s', filenode_old)
                    log.warning('Decoding failed of %s', node)                    
                    diff = 'unsupported type'
            cs1 = filenode_old.last_changeset.raw_id
            cs2 = node.last_changeset.raw_id                    
            c.changes.append(('changed', node, diff, cs1, cs2))
            
        for node in c.changeset.removed:
            c.changes.append(('removed', node, None, None, None))            
            
        return render('changeset/changeset.html')