from apiflask import APIBlueprint
from iti.applications.extensions import db, sys_log
from iti.applications.common.utils import success, page_schema, page
from iti.applications.models import (
    IotEndpoint,
    IotNode,
    IotNodeSchema,
)
from .schemas.node import (
    NodeQuery,
    NodeAddRequest,
    NodeUpdateRequest,
)
from iti.applications.common import ModelFilter
from iti.applications.common.exceptions.biz_exp import BizException
from flask_jwt_extended import jwt_required
from sqlalchemy import select, delete, exists
from sqlalchemy.orm import noload
from iti.applications.common import permission


bp = APIBlueprint("iot_node", __name__, url_prefix="/node", tag="采集节点管理")

@bp.get("/list")
@jwt_required()
@bp.doc(security="JWT")
@permission("iot:node:list")
@bp.input(NodeQuery.Schema(partial=True), location="query")
@bp.output(IotNodeSchema(many=True))
def list_node(query_data: NodeQuery):
    """
    获取采集节点列表
    """

    return success(get_list(query_data))


@bp.get("/page")
@jwt_required()
@bp.doc(security="JWT")
@permission("iot:node:list")
@bp.input(NodeQuery.Schema(partial=True), location="query")
@bp.output(page_schema(IotNodeSchema(many=True)))
def page_node(query_data: NodeQuery):
    """
    分页获取采集节点列表
    """

    return page(get_page(query_data))


@bp.post("/add")
@jwt_required()
@bp.doc(security="JWT")
@permission("iot:node:add")
@bp.input(NodeAddRequest, location="json")
def add_node(json_data: dict):
    """
    添加采集节点信息
    """
    
    node = IotNode(**json_data)
    endpoint = db.session.scalar(
        select(IotEndpoint)
        .options(noload(IotEndpoint.workshop), noload(IotEndpoint.device))
        .filter_by(id=node.endpoint_id))
    if not endpoint:
        raise BizException("采集端信息不存在")
    node.device_id = endpoint.device_id
    node.workshop_id = endpoint.workshop_id
    node.status = 0
    db.session.add(node)
    db.session.commit()
    return success()


@bp.put("/<int:id>")
@jwt_required()
@bp.doc(security="JWT")
@permission("iot:node:update")
@bp.input(NodeUpdateRequest(partial=True), location="json")
def update_node(id: int, json_data: dict):
    """
    更新采集节点信息
    """

    node = db.session.scalar(
        select(IotNode)
        .options(noload(IotNode.workshop), noload(IotNode.device), noload(IotNode.endpoint))
        .filter_by(id=id))
    if not node:
        raise BizException("节点信息不存在")
    for key, value in json_data.items():
        if value is not None:
            setattr(node, key, value)

    db.session.commit()

    return success()

@bp.delete("/<int:id>")
@jwt_required()
@bp.doc(security="JWT")
@permission("iot:node:delete")
def delete_node(id: int):
    """
    删除采集节点信息
    """

    node = db.session.scalar(
        select(IotNode)
        .options(noload(IotNode.workshop), noload(IotNode.device), noload(IotNode.endpoint))
        .filter_by(id=id))
    if not node:
        raise BizException("采集节点不存在")
    
    # 删除
    db.session.delete(node)
    db.session.commit()
    return success()


def get_page(query_data: NodeQuery):
    """
    获取采集节点分页
    """
    query = select(IotNode).order_by(IotNode.created_at.desc())
    if query_data.endpoint_id:
        query = query.filter(IotNode.endpoint_id == query_data.endpoint_id)
    elif query_data.device_id:
        query = query.filter(IotNode.device_id == query_data.device_id)
    elif query_data.workshop_id:
        query = query.filter(IotNode.workshop_id == query_data.workshop_id)
    if query_data.status is not None:
        query = query.filter(IotNode.status == query_data.status)
    
    return db.paginate(query, page=query_data.page, per_page=query_data.size)


def get_list(query_data: NodeQuery):
    """
    获取采集节点列表
    """
    query = select(IotNode).options(noload(IotNode.workshop), noload(IotNode.device), noload(IotNode.endpoint)).order_by(IotNode.created_at.desc())
    if query_data.endpoint_id:
        query = query.filter(IotNode.endpoint_id == query_data.endpoint_id)
    elif query_data.device_id:
        query = query.filter(IotNode.device_id == query_data.device_id)
    elif query_data.workshop_id:
        query = query.filter(IotNode.workshop_id == query_data.workshop_id)
    if query_data.status is not None:
        query = query.filter(IotNode.status == query_data.status) 
    return db.session.scalars(query).all()