# -*- coding: utf-8 -*-

# 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/>.

"""

Helper functions

Consists of functions to typically be used within templates, but also

available to Controllers. This module is available to both as 'h'.

"""

import hashlib

import StringIO

import math

import logging

import re

import urlparse

import textwrap

from pygments.formatters.html import HtmlFormatter

from pygments import highlight as code_highlight

from pylons import url

from pylons.i18n.translation import _, ungettext

from webhelpers.html import literal, HTML, escape

from webhelpers.html.tools import *

from webhelpers.html.builder import make_tag

from webhelpers.html.tags import auto_discovery_link, checkbox, css_classes, \

    end_form, file, hidden, image, javascript_link, link_to, \

    link_to_if, link_to_unless, ol, required_legend, select, stylesheet_link, \

    submit, text, password, textarea, title, ul, xml_declaration, radio, \

    form as insecure_form

from webhelpers.html.tools import auto_link, button_to, highlight, \

    js_obfuscate, mail_to, strip_links, strip_tags, tag_re

from webhelpers.number import format_byte_size, format_bit_size

from webhelpers.pylonslib import Flash as _Flash

from webhelpers.pylonslib.secure_form import secure_form, authentication_token

from webhelpers.text import chop_at, collapse, convert_accented_entities, \

    convert_misc_entities, lchop, plural, rchop, remove_formatting, \

    replace_whitespace, urlify, truncate, wrap_paragraphs

from webhelpers.date import time_ago_in_words

from webhelpers.paginate import Page as _Page

from webhelpers.html.tags import _set_input_attrs, _set_id_attr, \

    convert_boolean_attrs, NotGiven, _make_safe_id_component

from kallithea.lib.annotate import annotate_highlight

from kallithea.lib.utils import repo_name_slug, get_custom_lexer

from kallithea.lib.utils2 import str2bool, safe_unicode, safe_str, \

    get_changeset_safe, datetime_to_time, time_to_datetime, AttributeDict, \

    safe_int, MENTIONS_REGEX

from kallithea.lib.markup_renderer import MarkupRenderer, url_re

from kallithea.lib.vcs.exceptions import ChangesetDoesNotExistError

from kallithea.lib.vcs.backends.base import BaseChangeset, EmptyChangeset

from kallithea.config.conf import DATE_FORMAT, DATETIME_FORMAT

from kallithea.model.changeset_status import ChangesetStatusModel

from kallithea.model.db import URL_SEP, Permission

log = logging.getLogger(__name__)

def canonical_url(*args, **kargs):

    '''Like url(x, qualified=True), but returns url that not only is qualified

    but also canonical, as configured in canonical_url'''

    from kallithea import CONFIG

    try:

        parts = CONFIG.get('canonical_url', '').split('://', 1)

        kargs['host'] = parts[1].split('/', 1)[0]

hide_credentials = lambda x: ''.join(credentials_filter(x))

def show_id(cs):

    """

    Configurable function that shows ID

    by default it's r123:fffeeefffeee

    :param cs: changeset instance

    """

    from kallithea import CONFIG

    def_len = safe_int(CONFIG.get('show_sha_length', 12))

    show_rev = str2bool(CONFIG.get('show_revision_number', False))

    raw_id = cs.raw_id[:def_len]

    if show_rev:

        return 'r%s:%s' % (cs.revision, raw_id)

    else:

        return raw_id

def fmt_date(date):

    if date:

        return date.strftime("%Y-%m-%d %H:%M:%S").decode('utf8')

    return ""

def is_git(repository):

    if hasattr(repository, 'alias'):

        _type = repository.alias

    elif hasattr(repository, 'repo_type'):

        _type = repository.repo_type

    else:

        _type = repository

    return _type == 'git'

def is_hg(repository):

    if hasattr(repository, 'alias'):

        _type = repository.alias

    elif hasattr(repository, 'repo_type'):

        _type = repository.repo_type

    else:

        _type = repository

    return _type == 'hg'

def user_or_none(author):

    email = author_email(author)

    if email:

        if user is not None:

            return user

    return None

def email_or_none(author):

    if not author:

        return None

    user = user_or_none(author)

    if user is not None:

        return user.email # always use main email address - not necessarily the one used to find user

    # extract email from the commit string

    email = author_email(author)

    if email:

        return email

    # No valid email, not a valid user in the system, none!

    return None

def person(author, show_attr="username"):

    """Find the user identified by 'author', return one of the users attributes,

    default to the username attribute, None if there is no user"""

    # attr to return from fetched user

    person_getter = lambda usr: getattr(usr, show_attr)

    # if author is already an instance use it for extraction

    if isinstance(author, User):

        return person_getter(author)

    user = user_or_none(author)

    if user is not None:

        return person_getter(user)

    # Still nothing?  Just pass back the author name if any, else the email

    return author_name(author) or email(author)

def person_by_id(id_, show_attr="username"):

    # attr to return from fetched user

    person_getter = lambda usr: getattr(usr, show_attr)

    #maybe it's an ID ?

    if str(id_).isdigit() or isinstance(id_, int):

        id_ = int(id_)

        user = User.get(id_)

        if user is not None:

            return person_getter(user)

    return id_

def desc_stylize(value):

    """

    converts tags from value into html equivalent