# This file is part galatea_tutorial module for Tryton.
# The COPYRIGHT file at the top level of this repository contains
# the full copyright notices and license terms.
from trytond.model import ModelSQL, ModelView, fields
from trytond.pool import Pool
from trytond.transaction import Transaction
from trytond.cache import Cache
from .tools import slugify
from datetime import datetime

__all__ = ['GalateaTutorial', 'GalateaTutorialWebSite', 'GalateaTutorialComment']


class GalateaTutorial(ModelSQL, ModelView):
    "Galatea Tutorial"
    __name__ = 'galatea.tutorial'
    name = fields.Char('Name', required=True, on_change=['name', 'slug'])
    slug = fields.Char('slug', required=True, translate=True,
        help='Cannonical uri.')
    slug_langs = fields.Function(fields.Dict(None, 'Slug Langs'), 'get_slug_langs')
    description = fields.Text('Description', required=True, translate=True,
        help='You could write wiki markup to create html content. Formats text following '
        'the MediaWiki (http://meta.wikimedia.org/wiki/Help:Editing) syntax.')
    long_description = fields.Text('Long Description', translate=True,
        help='You could write wiki markup to create html content. Formats text following '
        'the MediaWiki (http://meta.wikimedia.org/wiki/Help:Editing) syntax.')
    metadescription = fields.Char('Meta Description', translate=True, 
        help='Almost all search engines recommend it to be shorter ' \
        'than 155 characters of plain text')
    metakeywords = fields.Char('Meta Keywords',  translate=True,
        help='Separated by comma')
    metatitle = fields.Char('Meta Title',  translate=True)
    active = fields.Boolean('Active',
        help='Dissable to not show content tutorial.')
    websites = fields.Many2Many('galatea.tutorial-galatea.website', 
        'tutorial', 'website', 'Websites',
        help='Tutorial will be available in those websites')
    gallery = fields.Boolean('Gallery', help='Active gallery attachments.')
    comment = fields.Boolean('Comment', help='Active comments.')
    comments = fields.One2Many('galatea.tutorial.comment', 'tutorial', 'Comments')
    attachments = fields.One2Many('ir.attachment', 'resource', 'Attachments')
    _slug_langs_cache = Cache('galatea_tutorial.slug_langs')

    @staticmethod
    def default_active():
        return True

    @staticmethod
    def default_websites():
        Website = Pool().get('galatea.website')
        return [p.id for p in Website.search([('registration','=',True)])]

    @classmethod
    def __setup__(cls):
        super(GalateaTutorial, cls).__setup__()
        cls._order.insert(0, ('name', 'ASC'))
        cls._error_messages.update({
            'delete_tutorial': ('You can not delete '
                'tutorials because you will get error 404 NOT Found. '
                'Dissable active field.'),
            })

    def on_change_name(self):
        res = {}
        if self.name and not self.slug:
            res['slug'] = slugify(self.name)
        return res

    @classmethod
    def copy(cls, tutorials, default=None):
        new_tutorials = []
        for tutorial in tutorials:
            default['slug'] = '%s-copy' % tutorial.slug
            new_tutorial, = super(GalateaTutorial, cls).copy([tutorial], default=default)
            tutorials.append(new_tutorial)
        return new_tutorials

    @classmethod
    def delete(cls, tutorials):
        cls.raise_user_error('delete_tutorials')

    def get_slug_langs(self, name):
        'Return dict slugs for each active languages'
        pool = Pool()
        Lang = pool.get('ir.lang')
        Tutorial = pool.get('galatea.tutorial')

        tutorial_id = self.id
        langs = Lang.search([
            ('active', '=', True),
            ('translatable', '=', True),
            ])

        slugs = {}
        for lang in langs:
            with Transaction().set_context(language=lang.code):
                tutorial, = Tutorial.read([tutorial], ['slug'])
                slugs[lang.code] = tutorial['slug']

        return slugs


class GalateaTutorialWebSite(ModelSQL):
    'Galatea Tutorial - Website'
    __name__ = 'galatea.tutorial-galatea.website'
    _table = 'galatea_tutorial_galatea_website'
    tutorial = fields.Many2One('galatea.tutorial', 'Tutorial', ondelete='CASCADE',
            select=True, required=True)
    website = fields.Many2One('galatea.website', 'Website', ondelete='RESTRICT',
            select=True, required=True)


class GalateaTutorialComment(ModelSQL, ModelView):
    "Galatea Tutorial Comment"
    __name__ = 'galatea.tutorial.comment'
    tutorial = fields.Many2One('galatea.tutorial', 'Tutorial', required=True)
    user = fields.Many2One('galatea.user', 'User', required=True)
    description = fields.Text('Description', required=True,
        help='You could write wiki markup to create html content. Formats text following '
        'the MediaWiki (http://meta.wikimedia.org/wiki/Help:Editing) syntax.')
    active = fields.Boolean('Active',
        help='Dissable to not show content tutorial.')
    comment_create_date = fields.Function(fields.Char('Create Date'),
        'get_comment_create_date')

    @classmethod
    def __setup__(cls):
        super(GalateaTutorialComment, cls).__setup__()
        cls._order.insert(0, ('create_date', 'DESC'))
        cls._order.insert(1, ('id', 'DESC'))

    @staticmethod
    def default_active():
        return True

    @classmethod
    def default_user(cls):
        Website = Pool().get('galatea.website')
        websites = Website.search([('active', '=', True)])
        if len(websites) == 1:
            if websites[0].tutorial_anonymous_user:
                return websites[0].tutorial_anonymous_user.id

    @classmethod
    def get_comment_create_date(cls, records, name):
        'Created domment date'
        res = {}
        DATE_FORMAT = '%s %s' % (Transaction().context['locale']['date'], '%H:%M:%S')
        for record in records:
            res[record.id] = record.create_date.strftime(DATE_FORMAT) or ''
        return res