#    This file is part of the Minecraft Overviewer.
#
#    Minecraft Overviewer 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.
#
#    Minecraft Overviewer 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 the Overviewer.  If not, see <http://www.gnu.org/licenses/>.

import os
import os.path
import stat
import cPickle
import Image
import shutil
from time import strftime, localtime
import json
import locale
import codecs

import util
from c_overviewer import get_render_mode_inheritance, get_render_mode_info
import overviewer_version

"""
This module has routines related to generating a Google Maps-based
interface out of a set of tiles.

"""

def mirror_dir(src, dst, entities=None):
    '''copies all of the entities from src to dst'''
    if not os.path.exists(dst):
        os.mkdir(dst)
    if entities and type(entities) != list: raise Exception("Expected a list, got a %r instead" % type(entities))
    
    # files which are problematic and should not be copied
    # usually, generated by the OS
    skip_files = ['Thumbs.db', '.DS_Store']
    
    for entry in os.listdir(src):
        if entry in skip_files:
            continue
        if entities and entry not in entities:
            continue
        
        if os.path.isdir(os.path.join(src,entry)):
            mirror_dir(os.path.join(src, entry), os.path.join(dst, entry))
        elif os.path.isfile(os.path.join(src,entry)):
            try:
                shutil.copy(os.path.join(src, entry), os.path.join(dst, entry))
            except IOError as outer: 
                try:
                    # maybe permission problems?
                    src_stat = os.stat(os.path.join(src, entry))
                    os.chmod(os.path.join(src, entry), src_stat.st_mode | stat.S_IRUSR)
                    dst_stat = os.stat(os.path.join(dst, entry))
                    os.chmod(os.path.join(dst, entry), dst_stat.st_mode | stat.S_IWUSR)
                except OSError: # we don't care if this fails
                    pass
                shutil.copy(os.path.join(src, entry), os.path.join(dst, entry))
                # if this stills throws an error, let it propagate up

class MapGen(object):
    def __init__(self, quadtrees, configInfo):
        """Generates a Google Maps interface for the given list of
        quadtrees. All of the quadtrees must have the same destdir,
        image format, and world. 

        Note:tiledir for each quadtree should be unique. By default the tiledir
        is determined by the rendermode
        
        """
        
        self.skipjs = configInfo.get('skipjs', False)
        self.nosigns = configInfo.get('nosigns', False)
        self.web_assets_hook = configInfo.get('web_assets_hook', None)
        self.web_assets_path = configInfo.get('web_assets_path', None)
        self.bg_color = configInfo.get('bg_color')
        self.north_direction = configInfo.get('north_direction', 'lower-left')
        
        if not len(quadtrees) > 0:
            raise ValueError("there must be at least one quadtree to work on")
        
        self.destdir = quadtrees[0].destdir
        self.regionobj = quadtrees[0].regionobj
        self.p = quadtrees[0].p
        for i in quadtrees:
            if i.destdir != self.destdir or i.regionobj != self.regionobj:
                raise ValueError("all the given quadtrees must have the same destdir and world")
        
        self.quadtrees = quadtrees
    
    def go(self, procs):
        """Writes out overviewerConfig.js and does copying of the other static web assets

        """
### TODO remove this method?  It has been moved into assetmanager.py

        pass


    def finalize(self):
        """Write out persistent data file and marker listings file
        """
### TODO remove this method?  It has been moved into assetmanager.py
        pass