# -*- coding: iso-8859-1 -*-
# Copyright (C) 2000-2009 Bastian Kleineidam
#
# 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; either version 2 of the License, or
# (at your option) any later version.
#
# 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., 675 Mass Ave, Cambridge, MA 02139, USA.
"""
A gml logger.
"""
import time
from .graph import GraphLogger
from .. import configuration, strformat


class GMLLogger (GraphLogger):
    """GML means Graph Modeling Language. Use a GML tool to see
    the sitemap graph."""

    def start_output (self):
        """Write start of checking info as gml comment."""
        super(GMLLogger, self).start_output()
        self.starttime = time.time()
        if self.has_part("intro"):
            self.comment(_("created by %(app)s at %(time)s") %
                        {"app": configuration.AppName,
                         "time": strformat.strtime(self.starttime)})
            self.comment(_("Get the newest version at %(url)s") %
                         {'url': configuration.Url})
            self.comment(_("Write comments and bugs to %(email)s") %
                         {'email': configuration.Email})
            self.check_date()
            self.writeln()
        self.writeln(u"graph [")
        self.writeln(u"  directed 1")
        self.flush()

    def comment (self, s, **args):
        """Write GML comment."""
        self.write(u"# ")
        self.writeln(s=s, **args)

    def log_url (self, url_data):
        """Write one node."""
        node = self.get_node(url_data)
        if node:
            self.writeln(u"  node [")
            self.writeln(u"    id     %d" % node["id"])
            self.writeln(u'    label  "%s"' % node["label"])
            if self.has_part("realurl"):
                self.writeln(u'    url  "%s"' % node["url"])
            if node["dltime"] >= 0 and self.has_part("dltime"):
                self.writeln(u"    dltime %d" % node["dltime"])
            if node["dlsize"] >= 0 and self.has_part("dlsize"):
                self.writeln(u"    dlsize %d" % node["dlsize"])
            if node["checktime"] and self.has_part("checktime"):
                self.writeln(u"    checktime %d" % node["checktime"])
            if self.has_part("extern"):
                self.writeln(u"    extern %d" % node["extern"])
            self.writeln(u"  ]")

    def write_edge (self, node):
        """Write one edge."""
        self.writeln(u"  edge [")
        self.writeln(u'    label  "%s"' % node["edge"])
        self.writeln(u"    source %d" % self.nodes[node["parent_url"]]["id"])
        self.writeln(u"    target %d" % node["id"])
        if self.has_part("result"):
            self.writeln(u"    valid  %d" % node["valid"])
        self.writeln(u"  ]")

    def end_graph (self):
        """Write end of graph marker."""
        self.writeln(u"]")