# 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.

import logging

import traceback

from pylons import tmpl_context as c, url, request, response

from pylons.i18n.translation import _

from pylons.controllers.util import redirect

import rhodecode.lib.helpers as h

from rhodecode.lib.auth import LoginRequired, HasRepoPermissionAnyDecorator

from rhodecode.lib.base import BaseController, render

from rhodecode.lib.utils import EmptyChangeset

from rhodecode.model.scm import ScmModel

from vcs.exceptions import RepositoryError, ChangesetError, \

ChangesetDoesNotExistError

from vcs.nodes import FileNode

from vcs.utils import diffs as differ

from vcs.utils.ordered_dict import OrderedDict

log = logging.getLogger(__name__)

class ChangesetController(BaseController):

    @LoginRequired()

    @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',

                                   'repository.admin')

    def __before__(self):

        super(ChangesetController, self).__before__()

    def index(self, revision):

        hg_model = ScmModel()

        def wrap_to_table(str):

            return '''<table class="code-difftable">

                        <tr class="line">

                        <td class="lineno new"></td>

                        <td class="code"><pre>%s</pre></td>

                        </tr>

                      </table>''' % str

        #get ranges of revisions if preset

        rev_range = revision.split('...')[:2]

        range_limit = 50

        try:

            repo = hg_model.get_repo(c.repo_name)

            if len(rev_range) == 2:

                rev_start = rev_range[0]

                rev_end = rev_range[1]

            else:

                rev_ranges = [repo.get_changeset(revision)]

            c.cs_ranges = list(rev_ranges)

        except (RepositoryError, ChangesetDoesNotExistError, Exception), e:

            log.error(traceback.format_exc())

            h.flash(str(e), category='warning')

            return redirect(url('home'))

        c.changes = OrderedDict()

        c.sum_added = 0

        c.sum_removed = 0

        for changeset in c.cs_ranges:

            c.changes[changeset.raw_id] = []

            try:

                changeset_parent = changeset.parents[0]

            except IndexError:

                changeset_parent = None

            #==================================================================

            # ADDED FILES

            #==================================================================

            for node in changeset.added:

                filenode_old = FileNode(node.path, '', EmptyChangeset())

                if filenode_old.is_binary or node.is_binary:

                    diff = wrap_to_table(_('binary file'))

                else:

                    c.sum_added += node.size

                    if c.sum_added < self.cut_off_limit:

                        f_udiff = differ.get_udiff(filenode_old, node)

                        diff = differ.DiffProcessor(f_udiff).as_html()

                    else:

                        diff = wrap_to_table(_('Changeset is to big and was cut'

                                            ' off, see raw changeset instead'))

                cs1 = None

                cs2 = node.last_changeset.raw_id

                c.changes[changeset.raw_id].append(('added', node, diff, cs1, cs2))

            #==================================================================

            # CHANGED FILES

            #==================================================================

            for node in changeset.changed: