from odoo import fields, models, api


class VideoCategory(models.Model):
    _name = 'yuthon.school.category'
    _description = '学习目录'
    _order = 'complete_name'
    _parent_store = True

    name = fields.Char(
        string='目录名称',
        required=True,
        help='如：Odoo 基础入门、模型开发、视图开发等',
    )
    parent_id = fields.Many2one(
        'yuthon.school.category',
        string='上级目录',
        index=True,
        ondelete='restrict',
        help='选择上级目录以建立层级结构',
    )
    parent_path = fields.Char(
        index=True,
        unaccent=False,
    )
    child_ids = fields.One2many(
        'yuthon.school.category',
        'parent_id',
        string='下级目录',
    )
    complete_name = fields.Char(
        string='完整路径',
        compute='_compute_complete_name',
        store=True,
        recursive=True,
        help='显示完整路径，如：Odoo 开发 > 模型开发 > 关系字段',
    )
    level = fields.Selection(
        [('beginner', '入门'), ('intermediate', '进阶'), ('advanced', '高级')],
        string='难度等级',
        default='beginner',
        help='该目录对应的学习难度',
    )
    description = fields.Text(
        string='目录说明',
        help='该学习目录的详细说明',
    )
    video_ids = fields.One2many(
        'yuthon.school.video',
        'category_id',
        string='教学视频',
    )
    video_count = fields.Integer(
        string='视频数量',
        compute='_compute_video_count',
        store=True,
    )
    active = fields.Boolean(
        string='启用',
        default=True,
    )

    @api.depends('name', 'parent_id.complete_name')
    def _compute_complete_name(self):
        for record in self:
            if record.parent_id:
                record.complete_name = f'{record.parent_id.complete_name} > {record.name}'
            else:
                record.complete_name = record.name

    @api.depends('video_ids')
    def _compute_video_count(self):
        for record in self:
            record.video_count = len(record.video_ids)