# Copyright 2015 Antiun Ingeniería S.L. (http://www.antiun.com)
# Copyright 2016 Jairo Llopis <jairo.llopis@tecnativa.com>
# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).

import logging

from odoo.http import request, route
from odoo.addons.mass_mailing.controllers.main import MassMailController

_logger = logging.getLogger(__name__)


class CustomUnsubscribe(MassMailController):
    def reason_form(self, mailing_id, email, res_id, reasons, token):
        """Get the unsubscription reason form.

        :param mail.mass_mailing mailing:
            Mailing where the unsubscription is being processed.

        :param str email:
            Email to be unsubscribed.

        :param int res_id:
            ID of the unsubscriber.

        :param str token:
            Security token for unsubscriptions.
        """
        return request.render(
            "mass_mailing_custom_unsubscribe.reason_form",
            {
                "email": email,
                "mailing_id": mailing_id,
                "reasons": reasons,
                "res_id": res_id,
                "token": token,
            })

    @route()
    def mailing(self, mailing_id, email=None, res_id=None, token="", **post):
        """Ask/save unsubscription reason."""
        _logger.debug(
            "Called `mailing()` with: %r",
            (mailing_id, email, res_id, token, post))
        reasons = request.env["mail.unsubscription.reason"].search([])
        try:
            # Check if we already have a reason for unsubscription
            reason_id = int(post["reason_id"])
        except (KeyError, ValueError):
            # No reasons? Ask for them
            return self.reason_form(mailing_id, email, res_id, reasons, token)
        else:
            details = post.get("details", False)
            self._add_extra_context(mailing_id, res_id, reason_id, details)
            # You could get a DetailsRequiredError here, but only if HTML5
            # validation fails, which should not happen in modern browsers
            result = super(CustomUnsubscribe, self).mailing(
                mailing_id, email, res_id, token=token, **post)
            result.qcontext.update({"reasons": reasons})
            return result

    @route()
    def unsubscribe(self, mailing_id, opt_in_ids, opt_out_ids, email, res_id,
                    token, reason_id=None, details=None):
        """Store unsubscription reasons when unsubscribing from RPC."""
        # Update request context
        self._add_extra_context(mailing_id, res_id, reason_id, details)
        _logger.debug(
            "Called `unsubscribe()` with: %r",
            (mailing_id, opt_in_ids, opt_out_ids, email, res_id, token,
             reason_id, details))
        return super(CustomUnsubscribe, self).unsubscribe(
            mailing_id, opt_in_ids, opt_out_ids, email, res_id, token)

    @route()
    def blacklist_add(self, mailing_id, res_id, email, token, reason_id=None,
                      details=None):
        self._add_extra_context(mailing_id, res_id, reason_id, details)
        return super(CustomUnsubscribe, self).blacklist_add(
            mailing_id, res_id, email, token)

    @route()
    def blacklist_remove(self, mailing_id, res_id, email, token,
                         reason_id=None, details=None):
        self._add_extra_context(mailing_id, res_id, reason_id, details)
        return super(CustomUnsubscribe, self).blacklist_remove(
            mailing_id, res_id, email, token)

    def _add_extra_context(self, mailing_id, res_id, reason_id, details):
        environ = request.httprequest.headers.environ
        # safe mailing_id and res_id to register a blacklisting or a
        # de-blacklisting
        extra_context = {
            "default_metadata": "\n".join(
                "%s: %s" % (val, environ.get(val)) for val in (
                    "REMOTE_ADDR",
                    "HTTP_USER_AGENT",
                    "HTTP_ACCEPT_LANGUAGE",
                )
            ),
            "mailing_id": mailing_id,
            "res_id": int(res_id),
        }
        if reason_id:
            extra_context["default_reason_id"] = int(reason_id)
        if details:
            extra_context["default_details"] = details
        request.context = dict(request.context, **extra_context)