#!/usr/bin/env python

# Copyright (C) 2007  Matt Kraai

# 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 3 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, see
# <http://www.gnu.org/licenses/>.

import datetime
import re
import sys
import textwrap

import blog

def xhtmlify(indent, tag, body, style=None):
    if style == None:
        style = ''
    else:
        style = ' style="%s"' % style
    email = 'kraai@ftbfs.org'
    for pattern, replacement in [('\n', ' '),
                                 (email,
                                  '[mailto:' + email + ' ' + email + ']'),
                                 ('\\[([^ ]+) ([^]]+)\\]',
                                  '<a href="\\1">\\2</a>'),
                                 ('&', '&amp;'),
                                 ('---', '&mdash;'),
                                 ('--', '&ndash;')]:
        body = re.sub(pattern, replacement, body)
    unwrapped_result = '%s<%s%s>%s</%s>' % (indent, tag, style, body, tag)
    if len(unwrapped_result) <= 70:
        return unwrapped_result + '\n'
    wrapped_body = body.replace('-', u'\N{NON-BREAKING HYPHEN}')
    wrapped_body = textwrap.fill(wrapped_body, initial_indent=indent + '  ',
                                 subsequent_indent=indent + '  ',
                                 break_long_words=False)
    wrapped_body = wrapped_body.replace(u'\N{NON-BREAKING HYPHEN}', '-')
    return '%s<%s%s>\n%s\n%s</%s>\n' % (indent, tag, style, wrapped_body,
                                        indent, tag)

def xhtmlify_file(text_file, header_level=1, header_link=None):
    body = ''
    paragraph = ''
    list_item = ''
    list_tag = None
    for line in file(text_file).readlines():
        if line != '\n':
            if re.match(' [*#] ', line):
                if list_item != '':
                    body += xhtmlify('      ', 'li', list_item)
                    list_item = ''
                if list_tag == None:
                    if line[1] == '*':
                        list_tag = 'ul'
                    else:
                        list_tag = 'ol'
                    body += '\n    <' + list_tag + '>\n'
                else:
                    body += '\n'
                list_item = line[2:-1]
            elif list_tag != None:
                list_item += ' ' + line[2:-1]
            elif paragraph == '':
                paragraph = line[:-1]
            elif re.match('=+', line[:-1]):
                if sys.argv[-1] != 'index.txt':
                    title = paragraph + ' - '
                if header_link != None:
                    paragraph = '<a href="%s">%s</a>' % (header_link,
                                                         paragraph)
                body += '\n' + xhtmlify('    ', 'h' + str(header_level),
                                        paragraph)
                paragraph = ''
            elif re.match('-+', line[:-1]):
                body += '\n' + xhtmlify('    ', 'h' + str(header_level + 1),
                                        paragraph)
                paragraph = ''
            else:
                paragraph += ' ' + line[:-1]
        elif list_tag != None:
            if list_item != '':
                body += xhtmlify('      ', 'li', list_item)
                list_item = ''
            body += '    </' + list_tag + '>\n'
            list_tag = None
        elif paragraph != '':
            body += '\n' + xhtmlify('    ', 'p', paragraph)
            paragraph = ''
    if list_tag != None:
        if list_item != '':
            body += xhtmlify('      ', 'li', list_item)
        body += '    </' + list_tag + '>\n'
    if paragraph != '':
        body += '\n' + xhtmlify('    ', 'p', paragraph)
    return body

if len(sys.argv) == 3 and sys.argv[1] == '--version=1.0':
    header = '''\
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
 "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
'''
else:
    header = '''\
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
 "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://www.w3.org/MarkUp/SCHEMA/xhtml11.xsd"
 xml:lang="en">
'''
document_template = '''\
<?xml version="1.0" encoding="UTF-8"?>
%s\
  <head>
    <title>%sftbfs.org</title>
  </head>

  <body>\
%s
    <hr/>

%s\
  </body>
</html>
'''
footer_template = u'''\
This web page and <a href="%s">its source code</a> are licensed under a <a \
rel="license" href="http://creativecommons.org/licenses/by-sa/3.0/">Creative \
Commons Attribution-Share Alike 3.0 License</a>.  The former was generated \
by <a href="Makefile">Makefile</a> and <a href="xhtmlify">xhtmlify</a> on \
%s.'''
text_file = sys.argv[-1]
title = ''
body = xhtmlify_file(text_file)
if text_file == 'index.txt':
    if blog.entries != []:
        body += '\n' + xhtmlify('    ', 'h2', 'Blog')
        for entry in blog.entries:
            body += xhtmlify_file(entry.path + '.txt', 3, entry.path)
now = datetime.datetime.now()
hour = now.hour % 12
if hour == 0:
    hour = 12
date_and_time = now.strftime('%%A, %%B %d, %%Y at %d:%%M %%p'
                             % (now.day, hour))
footer = xhtmlify('    ', 'p', footer_template % (sys.argv[-1], date_and_time),
                  'font-size: smaller')
print document_template % (header, title, body, footer),