from odoo import fields, models, api


class Exam(models.Model):
    _name = 'yuthon.school.exam'
    _description = '训练考核'
    _order = 'exam_date desc, id'

    name = fields.Char(
        string='考核名称',
        required=True,
        help='如：Odoo 18 模块开发单元测验',
    )
    course_id = fields.Many2one(
        'yuthon.school.course',
        string='课程',
        ondelete='restrict',
    )
    student_id = fields.Many2one(
        'yuthon.school.student',
        string='学生',
        required=True,
        ondelete='cascade',
    )
    exam_type = fields.Selection(
        [('quiz', '测验'), ('practice', '练习'),
         ('midterm', '期中'), ('final', '期末')],
        string='考核类型',
        default='quiz',
    )
    exam_date = fields.Date(
        string='考核日期',
    )
    score = fields.Float(
        string='得分',
        default=0.0,
    )
    total_score = fields.Float(
        string='满分',
        default=100.0,
    )
    pass_score = fields.Float(
        string='及格线',
        default=60.0,
    )
    state = fields.Selection(
        [('pending', '待考'), ('done', '已考')],
        string='状态',
        default='pending',
    )
    is_pass = fields.Boolean(
        string='是否及格',
        compute='_compute_is_pass',
        store=True,
    )
    note = fields.Text(
        string='评语',
    )
    active = fields.Boolean(
        string='启用',
        default=True,
    )

    @api.depends('score', 'pass_score')
    def _compute_is_pass(self):
        for record in self:
            record.is_pass = bool(record.score >= record.pass_score)

    def action_mark_done(self):
        """标记已考"""
        self.write({'state': 'done'})