# Part of Odoo, Flectra. See LICENSE file for full copyright and licensing details.

import json
import logging

import requests
from lxml import etree
import re
import werkzeug.urls

from flectra import api, models
from flectra.tools import misc
from flectra.addons.google_account import TIMEOUT

_logger = logging.getLogger(__name__)


class GoogleDrive(models.Model):
    _inherit = 'google.drive.config'

    def get_google_scope(self):
        scope = super(GoogleDrive, self).get_google_scope()
        return '%s https://spreadsheets.google.com/feeds' % scope

    @api.model
    def write_config_formula(self, attachment_id, spreadsheet_key, model, domain, groupbys, view_id):
        access_token = self.get_access_token(scope='https://spreadsheets.google.com/feeds')

        fields = self.env[model].fields_view_get(view_id=view_id, view_type='tree')
        doc = etree.XML(fields.get('arch'))
        display_fields = []
        for node in doc.xpath("//field"):
            if node.get('modifiers'):
                modifiers = json.loads(node.get('modifiers'))
                if not modifiers.get('invisible') and not modifiers.get('column_invisible'):
                    display_fields.append(node.get('name'))
        fields = " ".join(display_fields)
        domain = domain.replace("'", r"\'").replace('"', "'")
        if groupbys:
            fields = "%s %s" % (groupbys, fields)
            formula = '=oe_read_group("%s";"%s";"%s";"%s")' % (model, fields, groupbys, domain)
        else:
            formula = '=oe_browse("%s";"%s";"%s")' % (model, fields, domain)
        url = self.env['ir.config_parameter'].sudo().get_param('web.base.url')
        dbname = self._cr.dbname
        user = self.env['res.users'].browse(self.env.user.id).read(['login', 'password'])[0]
        username = user['login']
        password = user['password']
        if not password:
            config_formula = '=oe_settings("%s";"%s")' % (url, dbname)
        else:
            config_formula = '=oe_settings("%s";"%s";"%s";"%s")' % (url, dbname, username, password)
        request = '''<feed xmlns="http://www.w3.org/2005/Atom"
      xmlns:batch="http://schemas.google.com/gdata/batch"
      xmlns:gs="http://schemas.google.com/spreadsheets/2006">
  <id>https://spreadsheets.google.com/feeds/cells/{key}/od6/private/full</id>
  <entry>
    <batch:id>A1</batch:id>
    <batch:operation type="update"/>
    <id>https://spreadsheets.google.com/feeds/cells/{key}/od6/private/full/R1C1</id>
    <link rel="edit" type="application/atom+xml"
      href="https://spreadsheets.google.com/feeds/cells/{key}/od6/private/full/R1C1"/>
    <gs:cell row="1" col="1" inputValue="{formula}"/>
  </entry>
  <entry>
    <batch:id>A2</batch:id>
    <batch:operation type="update"/>
    <id>https://spreadsheets.google.com/feeds/cells/{key}/od6/private/full/R60C15</id>
    <link rel="edit" type="application/atom+xml"
      href="https://spreadsheets.google.com/feeds/cells/{key}/od6/private/full/R60C15"/>
    <gs:cell row="60" col="15" inputValue="{config}"/>
  </entry>
</feed>''' .format(key=spreadsheet_key, formula=misc.html_escape(formula), config=misc.html_escape(config_formula))

        try:
            req = requests.post(
                'https://spreadsheets.google.com/feeds/cells/%s/od6/private/full/batch?%s' % (spreadsheet_key, werkzeug.url_encode({'v': 3, 'access_token': access_token})),
                data=request,
                headers={'content-type': 'application/atom+xml', 'If-Match': '*'},
                timeout=TIMEOUT,
            )
        except IOError:
            _logger.warning("An error occured while writting the formula on the Google Spreadsheet.")

        description = '''
        formula: %s
        ''' % formula
        if attachment_id:
            self.env['ir.attachment'].browse(attachment_id).write({'description': description})
        return True

    @api.model
    def set_spreadsheet(self, model, domain, groupbys, view_id):
        try:
            config_id = self.env['ir.model.data'].get_object_reference('google_spreadsheet', 'google_spreadsheet_template')[1]
        except ValueError:
            raise
        config = self.browse(config_id)
        title = 'Spreadsheet %s' % model
        res = self.copy_doc(False, config.google_drive_resource_id, title, model)

        mo = re.search("(key=|/d/)([A-Za-z0-9-_]+)", res['url'])
        if mo:
            key = mo.group(2)

        self.write_config_formula(res.get('id'), key, model, domain, groupbys, view_id)
        return res