#!/usr/bin/env python
#
# $Id$
#
# Copyright (C) 2012 Internet Systems Consortium, Inc. ("ISC")
#
# Permission to use, copy, modify, and/or distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
# REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
# AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
# INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
# LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
# OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
# PERFORMANCE OF THIS SOFTWARE.

"""
Flat text summary of rcynic.xml.
"""

import sys
import urlparse
import textwrap

try:
    from lxml.etree            import ElementTree
except ImportError:
    from xml.etree.ElementTree import ElementTree

class Label(object):

    def __init__(self, elt):
        self.tag = elt.tag
        self.width = max(len(s) for s in elt.text.split())
        self.lines = textwrap.wrap(elt.text.strip(), width = self.width)
        self.counter = 0

    def line(self, n):
        try:
            return " " + self.lines[n].center(self.width) + " "
        except IndexError:
            return " " * (self.width + 2)

    def add(self):
        self.counter += 1

    @property
    def total(self):
        return " " + str(self.counter).rjust(self.width) + " "

    @property
    def visible(self):
        return self.counter > 0

class Host(object):

    def __init__(self):
        self.counters = {}

    def add(self, label):
        self.counters[label] = self.counters.get(label, 0) + 1
        label.add()

    def total(self, label):
        if label in self.counters:
            return " " + str(self.counters[label]).rjust(label.width) + " "
        else:
            return " " * (label.width + 2)

class Session(object):

    def __init__(self, labels):
        self.hosts = {}
        self.labels = labels
        self.map = dict((label.tag, label) for label in labels)

    def add(self, elt):
        label = self.map[elt.get("status")]
        hostname = urlparse.urlparse(elt.text.strip()).hostname
        if hostname not in self.hosts:
            self.hosts[hostname] = Host()
        self.hosts[hostname].add(label)

    def show(self):
        visible = [label for label in self.labels if label.visible]
        hostnames = sorted(hostname for hostname in self.hosts if hostname is not None)
        hostwidth = max(len(hostname) for hostname in hostnames + ["Hostname"])
        separator = "+-%s-+-%s-+" % (
            "-" * hostwidth,
            "-+-".join("-" * label.width for label in visible))
        print separator
        for i in xrange(max(len(label.lines) for label in visible)):
            print "| %s |%s|" % (
                ("Hostname" if i == 0 else "").ljust(hostwidth),
                "|".join(label.line(i) for label in visible))
        print separator
        for hostname in hostnames:
            print "| %s |%s|" % (
                hostname.ljust(hostwidth),
                "|".join(self.hosts[hostname].total(label) for label in visible))
        if hostnames:
            print separator
        print "| %s |%s|" % (
            "Total".ljust(hostwidth),
            "|".join(label.total for label in visible))
        print separator


def main():
    for filename in ([sys.stdin] if len(sys.argv) < 2 else sys.argv[1:]):
        etree = ElementTree(file = filename)
        session = Session([Label(elt) for elt in etree.find("labels")])
        for elt in etree.findall("validation_status"):
            session.add(elt)
        session.show()

if __name__ == "__main__":
    main()