# -*- coding: utf-8 -*-
"""
    rhodecode.controllers.admin.users
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    Users crud controller for pylons

    :created_on: Apr 4, 2010
    :author: marcink
    :copyright: (C) 2010-2012 Marcin Kuzminski <marcin@python-works.com>
    :license: GPLv3, see COPYING for more details.
"""
# 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/>.

import logging
import traceback
import formencode

from formencode import htmlfill
from pylons import request, session, tmpl_context as c, url, config
from pylons.controllers.util import redirect
from pylons.i18n.translation import _

from rhodecode.lib.exceptions import DefaultUserException, \
    UserOwnsReposException
from rhodecode.lib import helpers as h
from rhodecode.lib.auth import LoginRequired, HasPermissionAllDecorator,\
    AuthUser
from rhodecode.lib.base import BaseController, render

from rhodecode.model.db import User, Permission, UserEmailMap
from rhodecode.model.forms import UserForm
from rhodecode.model.user import UserModel
from rhodecode.model.meta import Session
from rhodecode.lib.utils import action_logger

log = logging.getLogger(__name__)


class UsersController(BaseController):
    """REST Controller styled on the Atom Publishing Protocol"""
    # To properly map this controller, ensure your config/routing.py
    # file has a resource setup:
    #     map.resource('user', 'users')

    @LoginRequired()
    @HasPermissionAllDecorator('hg.admin')
    def __before__(self):
        c.admin_user = session.get('admin_user')
        c.admin_username = session.get('admin_username')
        super(UsersController, self).__before__()
        c.available_permissions = config['available_permissions']

    def index(self, format='html'):
        """GET /users: All items in the collection"""
        # url('users')

        c.users_list = self.sa.query(User).all()
        return render('admin/users/users.html')

    def create(self):
        """POST /users: Create a new item"""
        # url('users')

        user_model = UserModel()
        user_form = UserForm()()
        try:
            form_result = user_form.to_python(dict(request.POST))
            user_model.create(form_result)
            usr = form_result['username']
            action_logger(self.rhodecode_user, 'admin_created_user:%s' % usr,
                          None, self.ip_addr, self.sa)
            h.flash(_('created user %s') % usr,
                    category='success')
            Session.commit()
        except formencode.Invalid, errors:
            return htmlfill.render(
                render('admin/users/user_add.html'),
                defaults=errors.value,
                errors=errors.error_dict or {},
                prefix_error=False,
                encoding="UTF-8")
        except Exception:
            log.error(traceback.format_exc())
            h.flash(_('error occurred during creation of user %s') \
                    % request.POST.get('username'), category='error')
        return redirect(url('users'))

    def new(self, format='html'):
        """GET /users/new: Form to create a new item"""
        # url('new_user')
        return render('admin/users/user_add.html')

    def update(self, id):
        """PUT /users/id: Update an existing item"""
        # Forms posted to this method should contain a hidden field:
        #    <input type="hidden" name="_method" value="PUT" />
        # Or using helpers:
        #    h.form(url('update_user', id=ID),
        #           method='put')
        # url('user', id=ID)
        user_model = UserModel()
        c.user = user_model.get(id)
        c.perm_user = AuthUser(user_id=id)
        _form = UserForm(edit=True, old_data={'user_id': id,
                                              'email': c.user.email})()
        form_result = {}
        try:
            form_result = _form.to_python(dict(request.POST))
            user_model.update(id, form_result)
            usr = form_result['username']
            action_logger(self.rhodecode_user, 'admin_updated_user:%s' % usr,
                          None, self.ip_addr, self.sa)
            h.flash(_('User updated successfully'), category='success')
            Session.commit()
        except formencode.Invalid, errors:
            c.user_email_map = UserEmailMap.query()\
                            .filter(UserEmailMap.user == c.user).all()
            defaults = errors.value
            e = errors.error_dict or {}
            perm = Permission.get_by_key('hg.create.repository')
            defaults.update({'create_repo_perm': user_model.has_perm(id, perm)})
            return htmlfill.render(
                render('admin/users/user_edit.html'),
                defaults=defaults,
                errors=e,
                prefix_error=False,
                encoding="UTF-8")
        except Exception:
            log.error(traceback.format_exc())
            h.flash(_('error occurred during update of user %s') \
                    % form_result.get('username'), category='error')

        return redirect(url('users'))

    def delete(self, id):
        """DELETE /users/id: Delete an existing item"""
        # Forms posted to this method should contain a hidden field:
        #    <input type="hidden" name="_method" value="DELETE" />
        # Or using helpers:
        #    h.form(url('delete_user', id=ID),
        #           method='delete')
        # url('user', id=ID)
        user_model = UserModel()
        try:
            user_model.delete(id)
            Session.commit()
            h.flash(_('successfully deleted user'), category='success')
        except (UserOwnsReposException, DefaultUserException), e:
            h.flash(e, category='warning')
        except Exception:
            log.error(traceback.format_exc())
            h.flash(_('An error occurred during deletion of user'),
                    category='error')
        return redirect(url('users'))

    def show(self, id, format='html'):
        """GET /users/id: Show a specific item"""
        # url('user', id=ID)

    def edit(self, id, format='html'):
        """GET /users/id/edit: Form to edit an existing item"""
        # url('edit_user', id=ID)
        c.user = User.get_or_404(id)

        if c.user.username == 'default':
            h.flash(_("You can't edit this user"), category='warning')
            return redirect(url('users'))
        c.perm_user = AuthUser(user_id=id)
        c.user.permissions = {}
        c.granted_permissions = UserModel().fill_perms(c.user)\
            .permissions['global']
        c.user_email_map = UserEmailMap.query()\
                        .filter(UserEmailMap.user == c.user).all()
        defaults = c.user.get_dict()
        perm = Permission.get_by_key('hg.create.repository')
        defaults.update({'create_repo_perm': UserModel().has_perm(id, perm)})

        return htmlfill.render(
            render('admin/users/user_edit.html'),
            defaults=defaults,
            encoding="UTF-8",
            force_defaults=False
        )

    def update_perm(self, id):
        """PUT /users_perm/id: Update an existing item"""
        # url('user_perm', id=ID, method='put')

        grant_perm = request.POST.get('create_repo_perm', False)
        user_model = UserModel()

        if grant_perm:
            perm = Permission.get_by_key('hg.create.none')
            user_model.revoke_perm(id, perm)

            perm = Permission.get_by_key('hg.create.repository')
            user_model.grant_perm(id, perm)
            h.flash(_("Granted 'repository create' permission to user"),
                    category='success')
            Session.commit()
        else:
            perm = Permission.get_by_key('hg.create.repository')
            user_model.revoke_perm(id, perm)

            perm = Permission.get_by_key('hg.create.none')
            user_model.grant_perm(id, perm)
            h.flash(_("Revoked 'repository create' permission to user"),
                    category='success')
            Session.commit()
        return redirect(url('edit_user', id=id))

    def add_email(self, id):
        """POST /user_emails:Add an existing item"""
        # url('user_emails', id=ID, method='put')

        #TODO: validation and form !!!
        email = request.POST.get('new_email')
        user_model = UserModel()

        try:
            user_model.add_extra_email(id, email)
            Session.commit()
            h.flash(_("Added email %s to user" % email), category='success')
        except formencode.Invalid, error:
            msg = error.error_dict['email']
            h.flash(msg, category='error')
        except Exception:
            log.error(traceback.format_exc())
            h.flash(_('An error occurred during email saving'),
                    category='error')
        return redirect(url('edit_user', id=id))

    def delete_email(self, id):
        """DELETE /user_emails_delete/id: Delete an existing item"""
        # url('user_emails_delete', id=ID, method='delete')
        user_model = UserModel()
        user_model.delete_extra_email(id, request.POST.get('del_email'))
        Session.commit()
        h.flash(_("Removed email from user"), category='success')
        return redirect(url('edit_user', id=id))