# Copyright 2016 Antonio Espinosa - <antonio.espinosa@tecnativa.com>
# Copyright 2019 Alexandre Díaz
# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).

from email.utils import getaddresses

from odoo import _, api, fields, models
from odoo.osv import expression
from odoo.tools import email_split


class MailMessage(models.Model):
    _inherit = "mail.message"

    # Recipients
    email_cc = fields.Char(
        "Cc", help="Additional recipients that receive a " '"Carbon Copy" of the e-mail'
    )
    email_to = fields.Char("To", help="Raw TO recipients")
    mail_tracking_ids = fields.One2many(
        comodel_name="mail.tracking.email",
        inverse_name="mail_message_id",
        string="Mail Trackings",
    )
    mail_tracking_needs_action = fields.Boolean(
        help="The message tracking will be considered" " to filter tracking issues",
        default=False,
    )
    is_failed_message = fields.Boolean(
        compute="_compute_is_failed_message",
        search="_search_is_failed_message",
    )

    @api.model
    def get_failed_states(self):
        """The 'failed' states of the message"""
        return {"error", "rejected", "spam", "bounced", "soft-bounced"}

    @api.depends(
        "mail_tracking_needs_action",
        "author_id",
        "notification_ids",
        "mail_tracking_ids.state",
    )
    def _compute_is_failed_message(self):
        """Compute 'is_failed_message' field for the active user"""
        failed_states = self.get_failed_states()
        for message in self:
            needs_action = message.mail_tracking_needs_action
            involves_me = self.env.user.partner_id in (
                message.author_id | message.notification_ids.mapped("res_partner_id")
            )
            has_failed_trackings = failed_states.intersection(
                message.mapped("mail_tracking_ids.state")
            )
            message.is_failed_message = bool(
                needs_action and involves_me and has_failed_trackings
            )

    def _search_is_failed_message(self, operator, value):
        """Search for messages considered failed for the active user.
        Be notice that 'notificacion_ids' is a record that change if
        the user mark the message as readed.
        """
        # FIXME: Due to ORM issue with auto_join and 'OR' we construct the domain
        # using an extra query to get valid results.
        # For more information see: https://github.com/odoo/odoo/issues/25175
        notification_partner_ids = self.search(
            [("notification_ids.res_partner_id", "=", self.env.user.partner_id.id)]
        )
        return expression.normalize_domain(
            [
                (
                    "mail_tracking_ids.state",
                    "in" if value else "not in",
                    list(self.get_failed_states()),
                ),
                ("mail_tracking_needs_action", "=", True),
                "|",
                ("author_id", "=", self.env.user.partner_id.id),
                ("id", "in", notification_partner_ids.ids),
            ]
        )

    def _tracking_status_map_get(self):
        """Map tracking states to be used in chatter"""
        return {
            "False": "waiting",
            "error": "error",
            "deferred": "sent",
            "sent": "sent",
            "delivered": "delivered",
            "opened": "opened",
            "rejected": "error",
            "spam": "error",
            "unsub": "opened",
            "bounced": "error",
            "soft-bounced": "error",
        }

    def _partner_tracking_status_get(self, tracking_email):
        """Determine tracking status"""
        tracking_status_map = self._tracking_status_map_get()
        status = "unknown"
        if tracking_email:
            tracking_email_status = str(tracking_email.state)
            status = tracking_status_map.get(tracking_email_status, "unknown")
        return status

    def _partner_tracking_status_human_get(self, status):
        """Translations for tracking statuses to be used on qweb"""
        statuses = {
            "waiting": _("Waiting"),
            "error": _("Error"),
            "sent": _("Sent"),
            "delivered": _("Delivered"),
            "opened": _("Opened"),
            "unknown": _("Unknown"),
        }
        return _("Status: %s") % statuses[status]

    @api.model
    def _get_error_description(self, tracking):
        """Translations for error descriptions to be used on qweb"""
        descriptions = {"no_recipient": _("The partner doesn't have a defined email")}
        return descriptions.get(tracking.error_type, tracking.error_description)

    def tracking_status(self):
        """Generates a complete status tracking of the messages by partner"""
        res = {}
        for message in self:
            partner_trackings = []
            partners_already = self.env["res.partner"]
            partners = self.env["res.partner"]
            trackings = (
                self.env["mail.tracking.email"]
                .sudo()
                .search([("mail_message_id", "=", message.id)])
            )
            # String to List
            email_cc_list = self._drop_aliases(email_split(message.email_cc))
            email_to_list = self._drop_aliases(email_split(message.email_to))
            # Search related partners recipients
            partners |= partners.search(
                [("email", "in", email_cc_list + email_to_list)]
            )
            # Operate over set's instead of lists
            email_cc_list = set(email_cc_list)
            email_to_list = set(email_to_list) - email_cc_list
            # Search all trackings for this message
            for tracking in trackings:
                status = self._partner_tracking_status_get(tracking)
                recipient = tracking.partner_id.name or tracking.recipient
                partner_trackings.append(
                    {
                        "status": status,
                        "status_human": self._partner_tracking_status_human_get(status),
                        "error_type": tracking.error_type,
                        "error_description": self._get_error_description(tracking),
                        "tracking_id": tracking.id,
                        "recipient": recipient,
                        "partner_id": tracking.partner_id.id,
                        "isCc": False,
                    }
                )
                if tracking.partner_id:
                    # Discard mails with tracking
                    email_cc_list.discard(tracking.partner_id.email)
                    email_to_list.discard(tracking.partner_id.email)
                    partners_already |= tracking.partner_id
            # Search all partner recipients for this message
            if message.partner_ids:
                partners |= message.partner_ids
            if message.notified_partner_ids:
                partners |= message.notified_partner_ids
            # Discard partner recipients already included
            partners -= partners_already
            # Default tracking values
            tracking_unknown_values = {
                "status": "unknown",
                "status_human": self._partner_tracking_status_human_get("unknown"),
                "error_type": False,
                "error_description": False,
                "tracking_id": False,
            }
            # Process tracking status of partner recipients without tracking
            for partner in partners:
                # Discard 'To' with partner
                if partner.email in email_to_list:
                    email_to_list.discard(partner.email)
                # If there is partners not included, then status is 'unknown'
                # and perhaps a Cc recipient
                isCc = False
                if partner.email in email_cc_list:
                    email_cc_list.discard(partner.email)
                    isCc = True
                tracking_status = tracking_unknown_values.copy()
                tracking_status.update(
                    {"recipient": partner.name, "partner_id": partner.id, "isCc": isCc}
                )
                partner_trackings.append(tracking_status)
            # Process Cc/To recipients without partner
            for cc, lst in [(True, email_cc_list), (False, email_to_list)]:
                for email in lst:
                    tracking_status = tracking_unknown_values.copy()
                    tracking_status.update(
                        {"recipient": email, "partner_id": False, "isCc": cc}
                    )
                    partner_trackings.append(tracking_status)
            res[message.id] = {
                "partner_trackings": partner_trackings,
                "is_failed_message": message.is_failed_message,
            }
        return res

    @api.model
    def _drop_aliases(self, mail_list):
        aliases = self.env["mail.alias"].get_aliases()

        def _filter_alias(email):
            email_wn = getaddresses([email])[0][1]
            if email_wn not in aliases:
                return email_wn

        return list(filter(_filter_alias, mail_list))

    def message_format(self, format_reply=True):
        """Preare values to be used by the chatter widget"""
        res = super().message_format(format_reply)
        mail_message_ids = {m.get("id") for m in res if m.get("id")}
        mail_messages = self.browse(mail_message_ids)
        tracking_statuses = mail_messages.tracking_status()
        for message_dict in res:
            mail_message_id = message_dict.get("id", False)
            if mail_message_id:
                message_dict.update(tracking_statuses[mail_message_id])
        return res

    def _prepare_dict_failed_message(self):
        """Preare values to be used by the chatter widget"""
        self.ensure_one()
        failed_trackings = self.mail_tracking_ids.filtered(
            lambda x: x.state in self.get_failed_states()
        )
        if not failed_trackings or not self.mail_tracking_needs_action:
            return
        failed_partners = failed_trackings.mapped("partner_id")
        failed_recipients = failed_partners.name_get()
        if self.author_id:
            author = self.author_id.name_get()[0]
        else:
            author = (-1, _("-Unknown Author-"))
        return {
            "id": self.id,
            "date": self.date,
            "author": author,
            "body": self.body,
            "failed_recipients": failed_recipients,
        }

    def get_failed_messages(self):
        """Returns the list of failed messages to be used by the
        failed_messages widget"""
        return [
            msg._prepare_dict_failed_message()
            for msg in self.sorted("date", reverse=True)
        ]

    def set_need_action_done(self):
        """Set message tracking action as done

        This will mark them to be ignored in the tracking issues filter.
        """
        self.check_access_rule("read")
        self.write({"mail_tracking_needs_action": False})
        self.env["bus.bus"]._sendone(
            self.env.user.partner_id, "toggle_tracking_status", self.ids
        )

    @api.model
    def get_failed_count(self):
        """Gets the number of failed messages used on discuss mailbox item"""
        return self.search_count([("is_failed_message", "=", True)])

    @api.model
    def set_all_as_reviewed(self):
        """Sets all messages in the given domain as reviewed.

        Used by Discuss"""

        unreviewed_messages = self.search([("is_failed_message", "=", True)])
        unreviewed_messages.write({"mail_tracking_needs_action": False})
        ids = unreviewed_messages.ids

        self.env["bus.bus"].sendone(
            (self._cr.dbname, "res.partner", self.env.user.partner_id.id),
            {
                "type": "toggle_tracking_status",
                "message_ids": ids,
                "needs_actions": False,
            },
        )

        return ids

    @api.model
    def get_failed_messsage_info(self, ids, model):
        msg_ids = self.search([("res_id", "=", ids), ("model", "=", model)])
        res = [
            msg._prepare_dict_failed_message()
            for msg in msg_ids.sorted("date", reverse=True)
            if msg._prepare_dict_failed_message()
        ]
        return res
