#!/usr/bin/env python
# -*- encoding: utf-8 -*-

##    news.py - Generates news.
##
##    Copyright © 2012 Ben Longbons <b.r.longbons@gmail.com>
##
##    This file is part of The Mana World
##
##    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, see <http://www.gnu.org/licenses/>.


from __future__ import print_function

import sys
import os
from abc import ABCMeta, abstractmethod

import _news_colors as colors

class BasicWriter(object):
    __slots__ = ('stream')
    __metaclass__ = ABCMeta
    def __init__(self, outfile):
        self.stream = open(outfile, 'w')

    @abstractmethod
    def start(self):
        pass

    @abstractmethod
    def put(self, entry):
        pass

    @abstractmethod
    def finish(self):
        pass

class HtmlWriter(BasicWriter):
    __slots__ = ()
    def start(self):
        self.stream.write('<!-- Generated by tools/news.py for index.php -->\n')
        #self.stream.write('<pre>\n')
        pass

    def put(self, entry):
        self.stream.write('<div>\n<p/>\n')
        entry = entry.replace('\n\n', '\n<p/>\n')
        entry = entry.format(**colors.make_html_colors_dict())
        self.stream.write(entry)
        self.stream.write('</div>\n')

    def finish(self):
        #self.stream.write('</pre>\n')
        pass

class TxtWriter(BasicWriter):
    __slots__ = ()
    def start(self):
        pass
    def put(self, entry):
        entry = entry.replace('\n\n', '\n \n')
        entry = entry.format(**colors.make_txt_colors_dict())
        self.stream.write(entry)
        self.stream.write(' \n \n')
    def finish(self):
        # DO NOT REMOVE
        #self.stream.write('Did you really read down this far?\n')
        pass

class ForumWriter(BasicWriter):
    # unlike the other writers, the forum writer only generates the latest
    __slots__ = ('done')
    def start(self):
        self.done = False
    def put(self, entry):
        if self.done:
            return
        entry = entry.format(**colors.make_forum_colors_dict())
        self.stream.write(entry)
        self.done = True
    def finish(self):
        pass

def create_writers(outdir):
    yield TxtWriter(os.path.join(outdir, 'news.txt'))
    yield HtmlWriter(os.path.join(outdir, 'news.html'))
    yield ForumWriter(os.path.join(outdir, 'news.phpbb.txt'))

def main(outdir, indir=None):
    if indir is None:
        indir = os.path.join(outdir, 'news.d')

    out = list(create_writers(outdir))
    for s in out:
        s.start()
    for entry in sorted(os.listdir(indir), reverse=True):
        if not entry.endswith('.txt'):
            continue
        e = open(os.path.join(indir, entry)).read()
        for s in out:
            s.put(e)
    for s in out:
        s.finish()

if __name__ == '__main__':
    main(*sys.argv[1:])