# -*- coding: utf-8 -*-

from odoo import fields, models, tools


class HelpdeskTicketReport(models.Model):
    """
    Extend helpdesk ticket report analysis to ensure proper 0-5 scale handling
    
    Requirements: 4.1, 4.2, 4.4, 4.5
    - Requirement 4.1: Display ratings using the 0-5 scale in reports
    - Requirement 4.2: Calculate average ratings based on the 0-5 scale
    - Requirement 4.4: Use 0-5 scale for filtering and grouping
    - Requirement 4.5: Include 0-5 scale values in exports
    """
    _inherit = 'helpdesk.ticket.report.analysis'

    # Override rating fields to ensure they display correctly with 0-5 scale
    rating_last_value = fields.Float(
        "Rating (1-5)", 
        aggregator="avg", 
        readonly=True,
        help="Last rating value on a 0-5 star scale"
    )
    
    rating_avg = fields.Float(
        'Average Rating (0-5)', 
        readonly=True, 
        aggregator='avg',
        help="Average rating value on a 0-5 star scale"
    )

    def _select(self):
        """
        Override the select clause to ensure rating calculations use 0-5 scale
        
        The parent class already calculates AVG(rt.rating) which will work correctly
        with our 0-5 scale ratings. We just need to ensure the field descriptions
        are clear about the scale being used.
        """
        # Call parent to get the base select
        return super()._select()

    def _from(self):
        """
        Override the from clause if needed to ensure proper rating joins
        
        The parent class already joins with rating_rating table correctly.
        Our extended rating model with 0-5 scale will be used automatically.
        """
        return super()._from()

    def _group_by(self):
        """
        Override the group by clause if needed
        
        The parent class grouping is already correct for our purposes.
        """
        return super()._group_by()