# Copyright (c) 2012 Roberto Alsina y otros.

# Permission is hereby granted, free of charge, to any
# person obtaining a copy of this software and associated
# documentation files (the "Software"), to deal in the
# Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the
# Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice
# shall be included in all copies or substantial portions of
# the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
# PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
# OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

from __future__ import unicode_literals, print_function

import os

from pygments import highlight
from pygments.lexers import get_lexer_for_filename, TextLexer
from pygments.formatters import HtmlFormatter

from nikola.plugin_categories import Task
from nikola import utils


class Listings(Task):
    """Render pretty listings."""

    name = "render_listings"

    def gen_tasks(self):
        """Render pretty code listings."""
        kw = {
            "default_lang": self.site.config["DEFAULT_LANG"],
            "listings_folder": self.site.config["LISTINGS_FOLDER"],
            "output_folder": self.site.config["OUTPUT_FOLDER"],
            "index_file": self.site.config["INDEX_FILE"],
        }

        # Things to ignore in listings
        ignored_extensions = (".pyc",)

        def render_listing(in_name, out_name, folders=[], files=[]):
            if in_name:
                with open(in_name, 'r') as fd:
                    try:
                        lexer = get_lexer_for_filename(in_name)
                    except:
                        lexer = TextLexer()
                    code = highlight(fd.read(), lexer,
                                     HtmlFormatter(cssclass='code',
                                                   linenos="table", nowrap=False,
                                                   lineanchors=utils.slugify(f),
                                                   anchorlinenos=True))
                title = os.path.basename(in_name)
            else:
                code = ''
                title = ''
            crumbs = utils.get_crumbs(os.path.relpath(out_name,
                                                      kw['output_folder']),
                                      is_file=True)
            context = {
                'code': code,
                'title': title,
                'crumbs': crumbs,
                'lang': kw['default_lang'],
                'folders': folders,
                'files': files,
                'description': title,
            }
            self.site.render_template('listing.tmpl', out_name,
                                      context)
        flag = True
        template_deps = self.site.template_system.template_deps('listing.tmpl')
        for root, dirs, files in os.walk(kw['listings_folder']):
            flag = False
            # Render all files
            out_name = os.path.join(
                kw['output_folder'],
                root, kw['index_file']
            )
            yield {
                'basename': self.name,
                'name': out_name,
                'file_dep': template_deps,
                'targets': [out_name],
                'actions': [(render_listing, [None, out_name, dirs, files])],
                # This is necessary to reflect changes in blog title,
                # sidebar links, etc.
                'uptodate': [utils.config_changed(
                    self.site.config['GLOBAL_CONTEXT'])],
                'clean': True,
            }
            for f in files:
                ext = os.path.splitext(f)[-1]
                if ext in ignored_extensions:
                    continue
                in_name = os.path.join(root, f)
                out_name = os.path.join(
                    kw['output_folder'],
                    root,
                    f) + '.html'
                yield {
                    'basename': self.name,
                    'name': out_name,
                    'file_dep': template_deps + [in_name],
                    'targets': [out_name],
                    'actions': [(render_listing, [in_name, out_name])],
                    # This is necessary to reflect changes in blog title,
                    # sidebar links, etc.
                    'uptodate': [utils.config_changed(
                        self.site.config['GLOBAL_CONTEXT'])],
                    'clean': True,
                }
        if flag:
            yield {
                'basename': self.name,
                'actions': [],
            }

[(86, 'os.walk', 'os.walk', False, 'import os\n'), (89, 'os.path.join', 'os.path.join', False, 'import os\n'), (66, 'os.path.basename', 'os.path.basename', False, 'import os\n'), (70, 'os.path.relpath', 'os.path.relpath', False, 'import os\n'), (109, 'os.path.join', 'os.path.join', False, 'import os\n'), (106, 'os.path.splitext', 'os.path.splitext', False, 'import os\n'), (110, 'os.path.join', 'os.path.join', False, 'import os\n'), (58, 'pygments.lexers.get_lexer_for_filename', 'get_lexer_for_filename', False, 'from pygments.lexers import get_lexer_for_filename, TextLexer\n'), (101, 'nikola.utils.config_changed', 'utils.config_changed', False, 'from nikola import utils\n'), (60, 'pygments.lexers.TextLexer', 'TextLexer', False, 'from pygments.lexers import get_lexer_for_filename, TextLexer\n'), (122, 'nikola.utils.config_changed', 'utils.config_changed', False, 'from nikola import utils\n'), (64, 'nikola.utils.slugify', 'utils.slugify', False, 'from nikola import utils\n')]