# Import necessary modules and classes
from odoo import models, api, fields
import logging

# Set up logging
_logger = logging.getLogger(__name__)


# Define a new class that inherits from 'mail.thread'
class MailThread(models.AbstractModel):
    _inherit = 'mail.thread'

    # Override the '_notify_compute_recipients' method
    def _notify_compute_recipients(self, message, msg_vals):
        # Call the parent class's method and get the recipients
        recipients = super(MailThread, self)._notify_compute_recipients(message, msg_vals)

        # Get the current datetime
        now = fields.Datetime.now()

        # Loop through each recipient
        for recipient in recipients:
            # Search for a user with the same partner_id as the recipient

            user = self.env['res.users'].search([('partner_id', '=', recipient['id'])], limit=1)
            # If a user is found, search for an employee with the same user_id
            if user:
                employee = self.env['hr.employee'].search([('user_id', '=', user.id)], limit=1)
            else:
                employee = False

            # If an employee is found
            if employee:
                employee_id = employee.id
                # Search for leaves that are validated, within the date range, and belong to the employee
                leaves = self.sudo().env['hr.leave'].search([
                    ('state', '=', 'validate'),
                    ('date_from', '<=', now),
                    ('date_to', '>', now),
                    ('employee_id', '=', employee_id),
                ])
                # Loop through each leave
                for leave in leaves:
                    # If the leave has an alternate follower and the follower is not already in the recipients list
                    if leave.alternate_follower_id and leave.alternate_follower_id.partner_id.id not in recipients:
                        # Log the addition of the alternate follower
                        _logger.info(
                            f"Adding {leave.alternate_follower_id.partner_id.name} as follower for {employee.name} "
                            f"while on time off.")
                        # Add the alternate follower to the recipients list
                        recipients.append({
                            'id': leave.alternate_follower_id.partner_id.id,
                            'active': True,
                            'share': False,
                            'groups': leave.alternate_follower_id.groups_id.ids,
                            'notif': 'inbox',
                            'type': 'user'
                        })
                    else:
                        _logger.info(
                            f"Not adding {leave.alternate_follower_id.partner_id.name} for {employee.name}, All ready "
                            f"a follower.")

        # Return the updated recipients list
        return recipients