import json
import logging
from odoo import fields, models, api

_logger = logging.getLogger(__name__)


def _strip_face_template(message_data_str):
    """移除 message_data JSON 中的 face_template 字段（图片base64太长）"""
    if not message_data_str:
        return message_data_str
    try:
        data = json.loads(message_data_str)
        if isinstance(data, dict) and 'face_template' in data:
            data.pop('face_template')
            _logger.info("已移除 face_template 字段")
            return json.dumps(data, ensure_ascii=False)
        if isinstance(data, list):
            changed = False
            for item in data:
                if isinstance(item, dict) and 'face_template' in item:
                    item.pop('face_template')
                    changed = True
            if changed:
                _logger.info("已移除列表中的 face_template 字段")
                return json.dumps(data, ensure_ascii=False)
        return message_data_str
    except (json.JSONDecodeError, TypeError):
        return message_data_str


class IotMessage(models.Model):
    _name = 'iot.message'
    _description = 'mqtt 消息,发送和接收'

    name = fields.Char(string='消息')
    topic = fields.Char(string='设备订阅主题')
    device_sn = fields.Char(string='设备编码')
    model = fields.Many2one('ir.model', string='模型')
    id = fields.Integer(string='模型id')
    message_data = fields.Text(string='message 数据')
    state = fields.Selection(
        [('draft', '待下发'), ('waiting', '下发完成等待结果'), ('done', '完成'), ('exception', '异常')], string='状态',
        default='draft')
    # 响应信息
    res_data = fields.Text(string='发送后的响应信息')
    face_data = fields.Text(string='照片数据')

    @api.model_create_multi
    def create(self, vals_list):
        # 保留全部数据（含 face_template），MQTT 下发时需要原样发给设备
        records = super().create(vals_list)
        # 从 message_data 提取 face_template 存入单独字段，并在 message_data 中移除
        for rec in records:
            if rec.message_data:
                try:
                    data = json.loads(rec.message_data)
                    if isinstance(data, dict) and 'face_template' in data:
                        face_tpl = data.pop('face_template')
                        rec.write({
                            'face_data': face_tpl,
                            'message_data': json.dumps(data, ensure_ascii=False),
                        })
                except (json.JSONDecodeError, TypeError):
                    pass
            # 创建设备日志时同步更新关联设备的最后更新时间
            if rec.device_sn:
                devices = self.env['attendance.iot'].sudo().search([('name', '=', rec.device_sn)], limit=1)
                if devices:
                    devices.touch_last_update()
        return records

    def write(self, vals):
        return super().write(vals)

    def action_clear_face_template(self):
        """批量清除已有记录的 face_template 参数"""
        count = 0
        for record in self:
            if not record.message_data:
                continue
            try:
                data = json.loads(record.message_data)
                changed = False
                if isinstance(data, dict) and 'face_template' in data:
                    data.pop('face_template')
                    changed = True
                elif isinstance(data, list):
                    for item in data:
                        if isinstance(item, dict) and 'face_template' in item:
                            item.pop('face_template')
                            changed = True
                if changed:
                    record.write({'message_data': json.dumps(data, ensure_ascii=False)})
                    count += 1
            except (json.JSONDecodeError, TypeError):
                continue
        _logger.info(f"已清理 {count} 条记录的 face_template")
        return {
            'type': 'ir.actions.client',
            'tag': 'display_notification',
            'params': {
                'title': '完成',
                'message': f'已清理 {count} 条记录的 face_template',
                'sticky': False,
                'type': 'success',
            }
        }

    @api.model
    def to_reply(self, data):
        _logger.info(f'返回消息:{data}')
        id = int(data.get('to'))
        if id:
            record = self.browse(id)
            if record:
                if data.get('data').get('code') == 0:
                    record.write({
                        'state': 'done',
                        'res_data': json.dumps(data, ensure_ascii=False)
                    })
                else:
                    record.write({
                        'state': 'exception',
                        'res_data': json.dumps(data, ensure_ascii=False)
                    })
        return data

    @api.model
    def get_draft_records(self):
        records = self.search([('state', '=', 'draft')], offset=0, limit=10)

        result = []
        for record in records:
            msg_data = record.message_data
            # 如果有独立存的面部照片，重新拼回去下发
            if record.face_data:
                try:
                    data = json.loads(msg_data) if msg_data else {}
                    if isinstance(data, dict):
                        data['face_template'] = record.face_data
                        msg_data = json.dumps(data, ensure_ascii=False)
                except (json.JSONDecodeError, TypeError):
                    pass
            result.append({
                'id': record.id,
                'topic': record.topic,
                'message_data': msg_data
            })
        records.write({'state': 'waiting'})
        return result