# pyrefly: ignore [missing-import]
from odoo import api, fields, models
from odoo.exceptions import ValidationError


class EducationAttendance(models.Model):
    _name = 'education.attendance'
    _description = 'Student Attendance History'
    _order = 'date desc, id desc'

    student_id = fields.Many2one('education.student', string='Student', required=True, index=True, ondelete='cascade')
    date = fields.Date(string='Date', required=True, index=True, default=fields.Date.context_today)
    session_id = fields.Many2one('education.attendance.session', string='Session', ondelete='set null', index=True)
    status = fields.Selection([
        ('present', 'Present'),
        ('absent', 'Absent'),
        ('late', 'Late'),
        ('medical_leave', 'Medical Leave'),
        ('on_duty', 'On Duty')
    ], string='Status', required=True, index=True)
    faculty_id = fields.Many2one('res.users', string='Faculty', required=True, index=True)
    remarks = fields.Text(string='Remarks')
    active = fields.Boolean(default=True)
    company_id = fields.Many2one(
        'res.company',
        string='Company',
        required=True,
        default=lambda self: self.env.company,
        index=True,
    )

    _uniq_student_session = models.Constraint(
        'unique(student_id, session_id)',
        'An attendance record already exists for this student in this session!'
    )

    def write(self, vals):
        for rec in self:
            if not self.env.user.has_group('education_attendance.group_attendance_manager'):
                raise ValidationError("Unauthorized: Only an Attendance Manager can directly modify attendance history records.")
        res = super().write(vals)
        self.mapped('student_id').invalidate_recordset()
        return res

    def unlink(self):
        for rec in self:
            if rec.session_id and rec.session_id.state == 'completed' and not self.env.user.has_group('education_attendance.group_attendance_manager'):
                raise ValidationError("Unauthorized: Only an Attendance Manager can directly delete attendance history records of completed sessions.")
        res = super().unlink()
        return res