from odoo import api, fields, models

class CourseChapter(models.Model):
    _name = 'course.chapter'
    _description = '课程章节'
    _rec_name = 'name'
    _inherit = ['mail.thread']
    _order = 'course_id, sequence, id'

    name = fields.Char(string='章节名称', required=True)
    sequence = fields.Integer(string='序号', default=10)
    description = fields.Html(string='章节描述')
    course_id = fields.Many2one('learning.course', string='所属课程', required=True, ondelete='cascade')
    is_published = fields.Boolean(string='是否发布', default=True)
    resource_count = fields.Integer(string='资源数量', compute='_compute_resource_count')
    video_count = fields.Integer(string='视频数量', compute='_compute_resource_count')
    doc_count = fields.Integer(string='文档数量', compute='_compute_resource_count')
    resource_ids = fields.One2many('course.chapter.resource', 'chapter_id', string='章节资源')
    # homework_ids = fields.One2many('course.homework', 'chapter_id', string='关联作业')

    syllabus_ids = fields.One2many('course.syllabus', 'chapter_id', string='教学大纲/教案')
    def _compute_resource_count(self):
        for record in self:
            record.resource_count = len(record.resource_ids)
            record.video_count = len(record.resource_ids.filtered(lambda r: r.resource_type == 'video'))
            record.doc_count = len(record.resource_ids.filtered(lambda r: r.resource_type in ['pdf', 'ppt']))

    def action_publish(self):
        self.is_published = True

    def action_hide(self):
        self.is_published = False