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


class EducationAttendanceLine(models.Model):
    _name = 'education.attendance.line'
    _description = 'Attendance Line Detail'
    _order = 'id asc'

    session_id = fields.Many2one('education.attendance.session', string='Session', required=True, ondelete='cascade', index=True)
    student_id = fields.Many2one('education.student', string='Student', required=True, index=True)
    status = fields.Selection([
        ('present', 'Present'),
        ('absent', 'Absent'),
        ('late', 'Late'),
        ('medical_leave', 'Medical Leave'),
        ('on_duty', 'On Duty')
    ], string='Status', default='present', required=True, index=True)
    remarks = fields.Char(string='Remarks')
    time_in = fields.Datetime(string='Time In')
    time_out = fields.Datetime(string='Time Out')
    active = fields.Boolean(default=True)
    company_id = fields.Many2one(
        'res.company',
        related='session_id.company_id',
        store=True,
        index=True,
    )

    _uniq_session_student = models.Constraint(
        'unique(session_id, student_id)',
        'A student cannot be added twice to the same attendance session!'
    )

    def write(self, vals):
        for rec in self:
            if rec.session_id.state == 'completed':
                if not self.env.user.has_group('education_attendance.group_attendance_manager'):
                    raise ValidationError("Only an Attendance Manager can modify attendance lines for a completed session.")
                # Sync correction to permanent history
                if 'status' in vals or 'remarks' in vals:
                    history = self.env['education.attendance'].search([
                        ('session_id', '=', rec.session_id.id),
                        ('student_id', '=', rec.student_id.id),
                    ], limit=1)
                    if history:
                        hist_vals = {}
                        if 'status' in vals:
                            hist_vals['status'] = vals['status']
                        if 'remarks' in vals:
                            hist_vals['remarks'] = vals['remarks']
                        history.write(hist_vals)
        res = super().write(vals)
        if any(rec.session_id.state == 'completed' for rec in self):
            self.mapped('student_id').invalidate_recordset()
        return res

    def unlink(self):
        for rec in self:
            if rec.session_id.state == 'completed' and not self.env.user.has_group('education_attendance.group_attendance_manager'):
                raise ValidationError("Cannot delete attendance lines of a completed session. Revert the session to draft first.")
        return super().unlink()