from odoo import api, fields, models, tools
from odoo.exceptions import ValidationError


class IssueApprovalDecision(models.Model):
    _name = "issue.approval.decision"
    _description = '决策清单'
    _order = 'sequence asc'

    name = fields.Char(string='事项')
    sequence = fields.Char(string='序号', store=True)
    decision_id = fields.Many2one('issue.approval.decision', string='上级事项')
    child_ids = fields.One2many('issue.approval.decision', 'decision_id', string='下级事项')
    specifics = fields.Char(string='具体事项')
    council = fields.Selection([('approval', '审'), ('decide', '决')], string='党总委员会')
    team_meet = fields.Selection([('approval', '审'), ('decide', '决')], string='经营班子会')
    board_meet = fields.Selection([('approval', '审'), ('decide', '决'), ('commission', '授权投决会')], string='董事会')
    district_bureau = fields.Char(string='区政府、区财政局')
    remarks = fields.Char(string='备注')

    @api.onchange('sequence', 'decision_id')
    def _onchange_department_code(self):
        for code in self:
            if code.sequence and code.decision_id:
                code.sequence = code.decision_id.sequence + ('.' + code.sequence if code.sequence else '')
            else:
                code.sequence = code.sequence
            code._update_child_sequences()

    def _update_child_sequences(self):
        def recursive_update(parent, parent_sequence):
            # 遍历每个子记录
            for child in parent.child_ids:
                # 使用父级的 sequence 更新子级的 sequence
                new_sequence = parent_sequence + ('.' + child.sequence.split('.')[-1] if child.sequence else '')
                self.env['issue.approval.decision'].search([('id', '=', child.id.origin)]).write({'sequence': new_sequence})
                # 递归处理孙级
                recursive_update(child, new_sequence)
        # 从当前记录开始递归更新所有子孙级别
        recursive_update(self, self.sequence)