python-fastapi-mm-zhcs-yj-api/utils/spatial/__init__.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

from common.BigDataCenterAPI import *
from models import *
from sqlalchemy import  text

from shapely.geometry import Polygon, MultiPolygon
from shapely.ops import unary_union
import json

def get_town_list(locations,):
    # 初始化一个空的MultiPolygon来容纳所有多边形

    multi_polygon = MultiPolygon()

    # 遍历每个位置，创建多边形并添加到multi_polygon中
    for location in locations:
        # 将边界列表转换为Polygon
        polygon = Polygon([(item['x'], item['y']) for item in location])
        multi_polygon = multi_polygon.union(polygon)

    # 将GeoJSON数据转换为字典
    with open('/home/python3/zj_geojson.json', 'r', encoding='utf-8') as file:
        geojson = json.load(file)

    # 假设GeoJSON数据是一个FeatureCollection
    features = geojson.get('features', [])

    # 初始化一个空列表来存储结果
    intersected_names_and_pacs = []

    # 遍历GeoJSON中的每个Feature，计算交集
    for feature in features:
        geom = feature['geometry']
        if 'coordinates' in geom:
            # 将GeoJSON Polygon转换为shapely Polygon
            if geom['type'] == 'Polygon':
                polygon = Polygon(geom['coordinates'][0])
                intersection = polygon.intersection(multi_polygon)
            elif geom['type'] == 'MultiPolygon':
                multi_polygon_feature = MultiPolygon([Polygon(coords[0]) for coords in geom['coordinates']])
                intersection = multi_polygon_feature.intersection(multi_polygon)
            else:
                continue  # 跳过非Polygon和非MultiPolygon类型的几何对象

            if not intersection.is_empty:
                properties = feature['properties']
                intersected_names_and_pacs.append({
                    "townName": properties.get('NAME', ''),
                    "code": properties.get('PAC', ''),
                    "populationSize": 0,  # 假设值，需要从数据中获取
                    "areaSize": round(intersection.area, 2),  # 交集区域的面积
                    "GDP": 0  # 假设值，需要从数据中获取
                })

    return intersected_names_and_pacs, len(intersected_names_and_pacs)

def get_town_village_list(locations,db):
    # 初始化一个空的MultiPolygon来容纳所有多边形

    multi_polygon = MultiPolygon()

    # 遍历每个位置，创建多边形并添加到multi_polygon中
    for location in locations:
        # 将边界列表转换为Polygon
        polygon = Polygon([(item['x'], item['y']) for item in location])
        multi_polygon = multi_polygon.union(polygon)

    intersected_towns = TpZjGeoJSONData.query.filter(
        db.func.ST_Intersects(TpZjGeoJSONData.geometry, multi_polygon) == True
    ).all()


    # 初始化一个空列表来存储结果
    intersected_names_and_pacs = []
    for town in intersected_towns:
        town_pac = town.pac[:-3]
        town_data = {
            "townName": town.name,
            "code": town.pac,
            "populationSize": 0,  # 假设值，需要从数据中获取
            "areaSize": town.geometry.area,  # 交集区域的面积
            "GDP": 0  # 假设值，需要从数据中获取
        }

        intersected_villages = TpCjSqGeoJSONData.query.filter(
            db.func.ST_Intersects(TpCjSqGeoJSONData.geometry, multi_polygon) == True
        ).filter(TpCjSqGeoJSONData.pac.like(f'{town_pac}%')).all()
        intersected_villages_names_and_pacs = []
        for village in intersected_villages:
            village_data = {
                "villageName": village.name,
                "code": village.pac,
                "populationSize": 0,  # 假设值，需要从数据中获取
                "areaSize": village.geometry.area,  # 交集区域的面积
                "GDP": 0  # 假设值，需要从数据中获取
            }
            intersected_villages_names_and_pacs.append(village_data)
        if len(intersected_villages_names_and_pacs)>0:
            town_data['children']=intersected_villages_names_and_pacs
            town_data['villageCount'] = len(intersected_villages_names_and_pacs)
        intersected_names_and_pacs.append(town_data)

    return intersected_names_and_pacs, len(intersected_names_and_pacs)
# import geopandas as gpd
# from shapely.geometry import Polygon
#
#
#
# def get_town_list(locations):
#     # 读取GeoJSON文件为GeoDataFrame
#     gdf = gpd.read_file('zj_geojson.json')
#     gdf = gdf.set_crs("EPSG:4326", allow_override=True)
#
#     # 初始化一个空的GeoDataFrame来容纳所有多边形
#     multi_polygon_gdf = gpd.GeoDataFrame(crs=gdf.crs)
#
#     # 遍历每个位置，创建多边形并添加到multi_polygon_gdf中
#     for location in locations:
#         # 将边界列表转换为Polygon
#         polygon = Polygon([(item['x'], item['y']) for item in location])
#         # 将多边形添加到multi_polygon_gdf中
#         multi_polygon_gdf = multi_polygon_gdf.append(gpd.GeoDataFrame([1], geometry=[polygon], crs=gdf.crs))
#
#     # 使用overlay函数来找出相交的区域
#     intersected = gpd.overlay(gdf, multi_polygon_gdf, how='intersection')
#
#     # 获取相交区域的名称和PAC
#     intersected_names_and_pacs = [{"name": row['NAME'], "pac": row['PAC'],"populationSize":0,"areaSize":0,"GDP":0} for index, row in intersected.iterrows() if 'NAME' in row and 'PAC' in row]
#
#     return intersected_names_and_pacs,len(intersected_names_and_pacs)



def convert_to_polygon(points):
    # 将点的列表转换为POLYGON格式的字符串
    polygon_str = "POLYGON(("
    for point in points:
        # 假设点的顺序是经度（x），纬度（y）
        polygon_str += f"{point['y']} {point['x']}, "
    # 移除最后一个逗号和空格，然后添加闭合点和结束括号
    polygon_str = polygon_str.rstrip(", ") + f", {points[0]['y']} {points[0]['x']}))"
    return polygon_str

def count_town_village(location_list:list,db):
    town_count = 0
    town_list = []
    village_count = 0
    village_list = []
    result = []

    url = 'https://19.15.75.180:8581/GatewayMsg/http/api/proxy/invoke'
    service_code= 'YZT1685418808667'
    service_info = db.query(OneShareApiEntity).filter(OneShareApiEntity.servercode == service_code).first()

    signTime = str(GetTime() // 1000)
    nonce = GetNonce(5)
    sign = GetSign(signTime, nonce, service_info.passtoken)
    headers = {
        # 'Content-Type': 'application/json',
        'x-tif-signature': sign,
        'x-tif-timestamp': signTime,
        'x-tif-nonce': nonce,
        'x-tif-paasid': service_info.passid,
        'x-tif-serviceId': service_code
    }
    response = requests.post(url=url, headers=headers, json=location_list, verify=False)
    if response.status_code==200:
        data_list = response.json()['data']

        for data in data_list:
            township = data['townshipCode']
            if township not in town_list:
                town_count+=1
                town_list.append(township)
                # result.append({'township':data['township'],"townshipCode":data['townshipCode'],"villages":[]})
                result.append({'township':data['township'],"townshipCode":data['townshipCode'],"village":'-',"villageCode":'-',"populationSize":0,"areaSize":0,"GDP":0})
            village = data['villageCode']
            if village not in village_list:
                village_count+=1
                village_list.append(village)
                # for town in result:
                #     if town['townshipCode']==data['townshipCode']:
                #         town["villages"].append({'village': data['village'], "villageCode": data['villageCode']})

                result.append({'township':data['township'],"townshipCode":data['townshipCode'],'village': data['village'], "villageCode": data['villageCode'],"populationSize":0,"areaSize":0,"GDP":0})

    return result,town_count,village_count

def count_emergency_expert(location_list:list,db):
    location = convert_to_polygon(location_list)

    sql = text(f"""SELECT * FROM emergency_expert WHERE ST_Contains(ST_PolygonFromText( '{location}', 4326 ),ST_PointFromText(CONCAT('POINT(', latitude, ' ', longitude, ')'), 4326))""")

    return len(db.execute(sql).all())

def count_emergency_management(location_list: list, db):

    location = convert_to_polygon(location_list)

    sql = text(f"""SELECT DISTINCT management_unit FROM `rescue_materia`  WHERE ST_Contains(ST_PolygonFromText( '{location}', 4326 ),ST_PointFromText(CONCAT('POINT(', latitude, ' ', longitude, ')'), 4326))""")

    return len(db.execute(sql).all())


def get_hospital_list(location_list:list,db):
    resutl = []
    for location in location_list:
        location = convert_to_polygon(location)
        sql = text(f"""SELECT hospital_name as `name`,longitude,latitude,6 AS `dataType` FROM mid_hospital WHERE ST_Contains(ST_PolygonFromText( '{location}', 4326 ),ST_PointFromText(CONCAT('POINT(', latitude, ' ', longitude, ')'), 4326))""")

        resutl+=db.execute(sql).all()
    return resutl

def get_emergency_shelter_list(location_list:list,db):

    resutl = []
    for location in location_list:
        location = convert_to_polygon(location)

        sql = text(f"""SELECT shelter_name as `name`,lng as longitude,lat as latitude,3 AS `dataType` FROM mid_emergency_shelter WHERE ST_Contains(ST_PolygonFromText( '{location}', 4326 ),ST_PointFromText(CONCAT('POINT(', lat, ' ', lng, ')'), 4326))""")

        resutl+=db.execute(sql).all()
    return resutl


def get_waterlogged_roads_list(location_list:list,db):

    resutl = []
    for location in location_list:
        location = convert_to_polygon(location)

        sql = text(f"""SELECT flood_name as `name`,lng as longitude,lat as latitude,4 AS `dataType` FROM mid_waterlogged_roads WHERE ST_Contains(ST_PolygonFromText( '{location}', 4326 ),ST_PointFromText(CONCAT('POINT(', lat, ' ', lng, ')'), 4326))""")

        resutl+=db.execute(sql).all()
    return resutl