from dateutil.relativedelta import relativedelta

from odoo import api, fields, models


class CommunitySchoolStudent(models.Model):
    _name = 'community.school.student'
    _description = 'School Student'
    _order = 'id desc'

    partner_id = fields.Many2one('res.partner', string='Student', required=True)
    parent_partner_id = fields.Many2one('res.partner', string='Parent/Guardian', required=True)
    date_of_birth = fields.Date()
    age = fields.Integer(compute='_compute_age')
    proficiency = fields.Selection(
        [('beginner', 'Beginner'), ('intermediate', 'Intermediate'), ('advanced', 'Advanced')],
        default='beginner',
    )
    grade_ref = fields.Char(string='Grade', help="Free-text grade reference, e.g. 'Grade 3'.")
    health_notes = fields.Text()
    emergency_contact_name = fields.Char()
    emergency_contact_phone = fields.Char()
    enrollment_ids = fields.One2many('community.school.enrollment', 'student_id')

    @api.depends('date_of_birth')
    def _compute_age(self):
        today = fields.Date.context_today(self)
        for student in self:
            if student.date_of_birth:
                student.age = relativedelta(today, student.date_of_birth).years
            else:
                student.age = 0