# weather_api.py - 服务器专用精简版，不含任何 GUI 代码
import requests
import math
from datetime import datetime, timedelta

# ==================== 全国150+城市坐标 ====================
# 从你的 test.py 中复制完整的 ALL_CITIES 字典到下面
ALL_CITIES = {
    # ===== 直辖市 =====
    "北京": {"lat": 39.9042, "lon": 116.4074, "province": "北京"},
    "上海": {"lat": 31.2304, "lon": 121.4737, "province": "上海"},
    "天津": {"lat": 39.0841, "lon": 117.2010, "province": "天津"},
    "重庆": {"lat": 29.4316, "lon": 106.9123, "province": "重庆"},

    # ===== 河北 =====
    "石家庄": {"lat": 38.0423, "lon": 114.5149, "province": "河北"},
    "唐山": {"lat": 39.6500, "lon": 118.1750, "province": "河北"},
    "秦皇岛": {"lat": 39.9354, "lon": 119.5884, "province": "河北"},
    "邯郸": {"lat": 36.6107, "lon": 114.4907, "province": "河北"},
    "邢台": {"lat": 37.0695, "lon": 114.5611, "province": "河北"},
    "保定": {"lat": 38.8677, "lon": 115.4850, "province": "河北"},
    "张家口": {"lat": 40.7690, "lon": 114.8841, "province": "河北"},
    "承德": {"lat": 40.9762, "lon": 117.9392, "province": "河北"},

    # ===== 山西 =====
    "太原": {"lat": 37.8706, "lon": 112.5489, "province": "山西"},
    "大同": {"lat": 40.0768, "lon": 113.3001, "province": "山西"},
    "阳泉": {"lat": 37.8576, "lon": 113.5833, "province": "山西"},
    "长治": {"lat": 36.1941, "lon": 113.1160, "province": "山西"},
    "晋城": {"lat": 35.4976, "lon": 112.8456, "province": "山西"},
    "临汾": {"lat": 36.0880, "lon": 111.5190, "province": "山西"},
    "运城": {"lat": 35.0269, "lon": 111.0029, "province": "山西"},

    # ===== 内蒙古 =====
    "呼和浩特": {"lat": 40.8424, "lon": 111.7492, "province": "内蒙古"},
    "包头": {"lat": 40.6210, "lon": 109.8402, "province": "内蒙古"},
    "乌海": {"lat": 39.6522, "lon": 106.7942, "province": "内蒙古"},
    "赤峰": {"lat": 42.2671, "lon": 118.9580, "province": "内蒙古"},
    "通辽": {"lat": 43.6523, "lon": 122.2649, "province": "内蒙古"},
    "鄂尔多斯": {"lat": 39.6084, "lon": 109.7809, "province": "内蒙古"},
    "呼伦贝尔": {"lat": 49.2118, "lon": 119.7658, "province": "内蒙古"},

    # ===== 辽宁 =====
    "沈阳": {"lat": 41.8057, "lon": 123.4315, "province": "辽宁"},
    "大连": {"lat": 38.9140, "lon": 121.6147, "province": "辽宁"},
    "鞍山": {"lat": 41.1078, "lon": 122.9956, "province": "辽宁"},
    "抚顺": {"lat": 41.8681, "lon": 123.9258, "province": "辽宁"},
    "本溪": {"lat": 41.2924, "lon": 123.7636, "province": "辽宁"},
    "锦州": {"lat": 41.0966, "lon": 121.1312, "province": "辽宁"},
    "丹东": {"lat": 40.0056, "lon": 124.3547, "province": "辽宁"},
    "营口": {"lat": 40.6662, "lon": 122.2352, "province": "辽宁"},
    "盘锦": {"lat": 41.1199, "lon": 122.0708, "province": "辽宁"},

    # ===== 吉林 =====
    "长春": {"lat": 43.8171, "lon": 125.3235, "province": "吉林"},
    "吉林市": {"lat": 43.8378, "lon": 126.5495, "province": "吉林"},
    "四平": {"lat": 43.1682, "lon": 124.3700, "province": "吉林"},
    "辽源": {"lat": 42.9027, "lon": 125.1442, "province": "吉林"},
    "通化": {"lat": 41.7291, "lon": 125.9369, "province": "吉林"},
    "白山": {"lat": 41.9400, "lon": 126.4250, "province": "吉林"},
    "松原": {"lat": 45.1411, "lon": 124.8232, "province": "吉林"},
    "延边": {"lat": 42.8916, "lon": 129.5087, "province": "吉林"},

    # ===== 黑龙江 =====
    "哈尔滨": {"lat": 45.8038, "lon": 126.5350, "province": "黑龙江"},
    "齐齐哈尔": {"lat": 47.3543, "lon": 123.9182, "province": "黑龙江"},
    "鸡西": {"lat": 45.2951, "lon": 130.9691, "province": "黑龙江"},
    "鹤岗": {"lat": 47.3499, "lon": 130.2900, "province": "黑龙江"},
    "双鸭山": {"lat": 46.6466, "lon": 131.1540, "province": "黑龙江"},
    "大庆": {"lat": 46.5907, "lon": 125.1122, "province": "黑龙江"},
    "伊春": {"lat": 47.7266, "lon": 128.8420, "province": "黑龙江"},
    "佳木斯": {"lat": 46.7995, "lon": 130.3155, "province": "黑龙江"},
    "牡丹江": {"lat": 44.5533, "lon": 129.6195, "province": "黑龙江"},
    "黑河": {"lat": 50.2403, "lon": 127.5288, "province": "黑龙江"},
    "绥化": {"lat": 46.6522, "lon": 126.9700, "province": "黑龙江"},

    # ===== 江苏 =====
    "南京": {"lat": 32.0603, "lon": 118.7969, "province": "江苏"},
    "苏州": {"lat": 31.2990, "lon": 120.5853, "province": "江苏"},
    "无锡": {"lat": 31.4912, "lon": 120.3119, "province": "江苏"},
    "常州": {"lat": 31.8107, "lon": 119.9741, "province": "江苏"},
    "南通": {"lat": 32.0145, "lon": 120.8738, "province": "江苏"},
    "徐州": {"lat": 34.2057, "lon": 117.2836, "province": "江苏"},
    "扬州": {"lat": 32.3932, "lon": 119.4210, "province": "江苏"},
    "镇江": {"lat": 32.2000, "lon": 119.4550, "province": "江苏"},
    "泰州": {"lat": 32.4555, "lon": 119.9200, "province": "江苏"},
    "盐城": {"lat": 33.3781, "lon": 120.1630, "province": "江苏"},

    # ===== 浙江 =====
    "杭州": {"lat": 30.2741, "lon": 120.1551, "province": "浙江"},
    "宁波": {"lat": 29.8683, "lon": 121.5440, "province": "浙江"},
    "温州": {"lat": 28.0000, "lon": 120.7000, "province": "浙江"},
    "嘉兴": {"lat": 30.7460, "lon": 120.7580, "province": "浙江"},
    "湖州": {"lat": 30.8940, "lon": 120.1020, "province": "浙江"},
    "绍兴": {"lat": 30.0300, "lon": 120.5800, "province": "浙江"},
    "金华": {"lat": 29.1030, "lon": 119.6470, "province": "浙江"},
    "衢州": {"lat": 28.9360, "lon": 118.8760, "province": "浙江"},
    "舟山": {"lat": 29.9900, "lon": 122.2050, "province": "浙江"},
    "台州": {"lat": 28.6560, "lon": 121.4210, "province": "浙江"},
    "丽水": {"lat": 28.4670, "lon": 119.9230, "province": "浙江"},

    # ===== 安徽 =====
    "合肥": {"lat": 31.8206, "lon": 117.2272, "province": "安徽"},
    "芜湖": {"lat": 31.3527, "lon": 118.3760, "province": "安徽"},
    "蚌埠": {"lat": 32.9394, "lon": 117.3600, "province": "安徽"},
    "淮南": {"lat": 32.6260, "lon": 116.9990, "province": "安徽"},
    "马鞍山": {"lat": 31.6700, "lon": 118.5000, "province": "安徽"},
    "淮北": {"lat": 33.9600, "lon": 116.7980, "province": "安徽"},
    "铜陵": {"lat": 30.9440, "lon": 117.8120, "province": "安徽"},
    "安庆": {"lat": 30.5250, "lon": 117.0500, "province": "安徽"},
    "黄山": {"lat": 29.7200, "lon": 118.3100, "province": "安徽"},
    "滁州": {"lat": 32.3200, "lon": 118.3300, "province": "安徽"},
    "阜阳": {"lat": 32.8900, "lon": 115.8100, "province": "安徽"},

    # ===== 福建 =====
    "福州": {"lat": 26.0745, "lon": 119.2965, "province": "福建"},
    "厦门": {"lat": 24.4798, "lon": 118.0894, "province": "福建"},
    "莆田": {"lat": 25.4540, "lon": 119.0070, "province": "福建"},
    "泉州": {"lat": 24.8740, "lon": 118.6760, "province": "福建"},
    "漳州": {"lat": 24.5090, "lon": 117.6470, "province": "福建"},
    "龙岩": {"lat": 25.0750, "lon": 117.0170, "province": "福建"},
    "宁德": {"lat": 26.6660, "lon": 119.5470, "province": "福建"},
    "三明": {"lat": 26.2650, "lon": 117.6390, "province": "福建"},
    "南平": {"lat": 26.6400, "lon": 118.1770, "province": "福建"},

    # ===== 江西 =====
    "南昌": {"lat": 28.6820, "lon": 115.8579, "province": "江西"},
    "九江": {"lat": 29.7000, "lon": 116.0000, "province": "江西"},
    "景德镇": {"lat": 29.2670, "lon": 117.1830, "province": "江西"},
    "萍乡": {"lat": 27.6170, "lon": 113.8500, "province": "江西"},
    "赣州": {"lat": 25.8300, "lon": 114.9300, "province": "江西"},
    "吉安": {"lat": 27.1167, "lon": 114.9833, "province": "江西"},
    "宜春": {"lat": 27.8000, "lon": 114.3830, "province": "江西"},
    "上饶": {"lat": 28.4530, "lon": 117.9670, "province": "江西"},

    # ===== 山东 =====
    "济南": {"lat": 36.6512, "lon": 117.1201, "province": "山东"},
    "青岛": {"lat": 36.0671, "lon": 120.3826, "province": "山东"},
    "淄博": {"lat": 36.8130, "lon": 118.0550, "province": "山东"},
    "枣庄": {"lat": 34.8100, "lon": 117.3200, "province": "山东"},
    "东营": {"lat": 37.4300, "lon": 118.6700, "province": "山东"},
    "烟台": {"lat": 37.4635, "lon": 121.4479, "province": "山东"},
    "潍坊": {"lat": 36.7050, "lon": 119.1620, "province": "山东"},
    "济宁": {"lat": 35.4000, "lon": 116.5800, "province": "山东"},
    "泰安": {"lat": 36.2000, "lon": 117.0800, "province": "山东"},
    "威海": {"lat": 37.5130, "lon": 122.1220, "province": "山东"},
    "临沂": {"lat": 35.1050, "lon": 118.3500, "province": "山东"},
    "德州": {"lat": 37.4500, "lon": 116.3000, "province": "山东"},
    "聊城": {"lat": 36.4500, "lon": 116.0000, "province": "山东"},
    "滨州": {"lat": 37.3830, "lon": 118.0330, "province": "山东"},
    "菏泽": {"lat": 35.2400, "lon": 115.4300, "province": "山东"},

    # ===== 河南 =====
    "郑州": {"lat": 34.7566, "lon": 113.6253, "province": "河南"},
    "开封": {"lat": 34.7973, "lon": 114.3073, "province": "河南"},
    "洛阳": {"lat": 34.6181, "lon": 112.4540, "province": "河南"},
    "平顶山": {"lat": 33.7350, "lon": 113.2930, "province": "河南"},
    "安阳": {"lat": 36.1030, "lon": 114.3520, "province": "河南"},
    "鹤壁": {"lat": 35.9000, "lon": 114.2000, "province": "河南"},
    "新乡": {"lat": 35.3030, "lon": 113.9270, "province": "河南"},
    "焦作": {"lat": 35.2400, "lon": 113.2400, "province": "河南"},
    "濮阳": {"lat": 35.7600, "lon": 115.0700, "province": "河南"},
    "许昌": {"lat": 34.0300, "lon": 113.8500, "province": "河南"},
    "漯河": {"lat": 33.5800, "lon": 114.0200, "province": "河南"},
    "三门峡": {"lat": 34.7700, "lon": 111.2000, "province": "河南"},
    "南阳": {"lat": 32.9900, "lon": 112.5300, "province": "河南"},
    "商丘": {"lat": 34.4200, "lon": 115.6500, "province": "河南"},
    "信阳": {"lat": 32.1200, "lon": 114.0700, "province": "河南"},
    "周口": {"lat": 33.6200, "lon": 114.6500, "province": "河南"},
    "驻马店": {"lat": 32.9800, "lon": 114.0200, "province": "河南"},

    # ===== 湖北 =====
    "武汉": {"lat": 30.5928, "lon": 114.3055, "province": "湖北"},
    "黄石": {"lat": 30.2200, "lon": 115.1000, "province": "湖北"},
    "十堰": {"lat": 32.6300, "lon": 110.7800, "province": "湖北"},
    "宜昌": {"lat": 30.6900, "lon": 111.2900, "province": "湖北"},
    "襄阳": {"lat": 32.0400, "lon": 112.1400, "province": "湖北"},
    "鄂州": {"lat": 30.4000, "lon": 114.8900, "province": "湖北"},
    "荆门": {"lat": 31.0300, "lon": 112.2000, "province": "湖北"},
    "孝感": {"lat": 30.9200, "lon": 113.9200, "province": "湖北"},
    "荆州": {"lat": 30.3400, "lon": 112.2400, "province": "湖北"},
    "黄冈": {"lat": 30.4500, "lon": 114.8800, "province": "湖北"},
    "咸宁": {"lat": 29.8300, "lon": 114.3200, "province": "湖北"},
    "随州": {"lat": 31.6900, "lon": 113.3700, "province": "湖北"},
    "恩施": {"lat": 30.2900, "lon": 109.4800, "province": "湖北"},

    # ===== 湖南 =====
    "长沙": {"lat": 28.2282, "lon": 112.9388, "province": "湖南"},
    "株洲": {"lat": 27.8300, "lon": 113.1500, "province": "湖南"},
    "湘潭": {"lat": 27.8300, "lon": 112.9000, "province": "湖南"},
    "衡阳": {"lat": 26.8900, "lon": 112.6100, "province": "湖南"},
    "邵阳": {"lat": 27.2400, "lon": 111.4700, "province": "湖南"},
    "岳阳": {"lat": 29.3700, "lon": 113.1000, "province": "湖南"},
    "常德": {"lat": 29.0500, "lon": 111.6800, "province": "湖南"},
    "张家界": {"lat": 29.1160, "lon": 110.4780, "province": "湖南"},
    "益阳": {"lat": 28.5700, "lon": 112.3300, "province": "湖南"},
    "郴州": {"lat": 25.7700, "lon": 113.0300, "province": "湖南"},
    "永州": {"lat": 26.4300, "lon": 111.6200, "province": "湖南"},
    "怀化": {"lat": 27.5700, "lon": 110.0000, "province": "湖南"},
    "娄底": {"lat": 27.7300, "lon": 112.0000, "province": "湖南"},

    # ===== 广东 =====
    "广州": {"lat": 23.1291, "lon": 113.2644, "province": "广东"},
    "韶关": {"lat": 24.8000, "lon": 113.6000, "province": "广东"},
    "深圳": {"lat": 22.5431, "lon": 114.0579, "province": "广东"},
    "珠海": {"lat": 22.2700, "lon": 113.5770, "province": "广东"},
    "汕头": {"lat": 23.3700, "lon": 116.6800, "province": "广东"},
    "佛山": {"lat": 23.0300, "lon": 113.1200, "province": "广东"},
    "江门": {"lat": 22.5800, "lon": 113.0800, "province": "广东"},
    "湛江": {"lat": 21.2700, "lon": 110.3500, "province": "广东"},
    "茂名": {"lat": 21.6600, "lon": 110.9200, "province": "广东"},
    "肇庆": {"lat": 23.0500, "lon": 112.4500, "province": "广东"},
    "惠州": {"lat": 23.1100, "lon": 114.4100, "province": "广东"},
    "梅州": {"lat": 24.2800, "lon": 116.1200, "province": "广东"},
    "汕尾": {"lat": 22.7800, "lon": 115.3700, "province": "广东"},
    "河源": {"lat": 23.7300, "lon": 114.6800, "province": "广东"},
    "阳江": {"lat": 21.8500, "lon": 111.9800, "province": "广东"},
    "清远": {"lat": 23.6800, "lon": 113.0200, "province": "广东"},
    "东莞": {"lat": 23.0200, "lon": 113.7500, "province": "广东"},
    "中山": {"lat": 22.5200, "lon": 113.3800, "province": "广东"},
    "潮州": {"lat": 23.6700, "lon": 116.6300, "province": "广东"},
    "揭阳": {"lat": 23.5500, "lon": 116.3700, "province": "广东"},
    "云浮": {"lat": 22.9300, "lon": 112.0300, "province": "广东"},

    # ===== 广西 =====
    "南宁": {"lat": 22.8170, "lon": 108.3669, "province": "广西"},
    "柳州": {"lat": 24.3100, "lon": 109.4000, "province": "广西"},
    "桂林": {"lat": 25.2736, "lon": 110.2900, "province": "广西"},
    "梧州": {"lat": 23.4800, "lon": 111.3200, "province": "广西"},
    "北海": {"lat": 21.4800, "lon": 109.1200, "province": "广西"},
    "防城港": {"lat": 21.6800, "lon": 108.3500, "province": "广西"},
    "钦州": {"lat": 21.9500, "lon": 108.6200, "province": "广西"},
    "贵港": {"lat": 23.1000, "lon": 109.6000, "province": "广西"},
    "玉林": {"lat": 22.6300, "lon": 110.1500, "province": "广西"},
    "百色": {"lat": 23.9000, "lon": 106.6200, "province": "广西"},
    "贺州": {"lat": 24.4000, "lon": 111.5500, "province": "广西"},
    "河池": {"lat": 24.7000, "lon": 108.0700, "province": "广西"},
    "来宾": {"lat": 23.7300, "lon": 109.2300, "province": "广西"},
    "崇左": {"lat": 22.4000, "lon": 107.3700, "province": "广西"},

    # ===== 海南 =====
    "海口": {"lat": 20.0440, "lon": 110.1999, "province": "海南"},
    "三亚": {"lat": 18.2528, "lon": 109.5119, "province": "海南"},
    "儋州": {"lat": 19.5200, "lon": 109.5800, "province": "海南"},

    # ===== 四川 =====
    "成都": {"lat": 30.5728, "lon": 104.0668, "province": "四川"},
    "自贡": {"lat": 29.3500, "lon": 104.7700, "province": "四川"},
    "攀枝花": {"lat": 26.5800, "lon": 101.7200, "province": "四川"},
    "泸州": {"lat": 28.8800, "lon": 105.4300, "province": "四川"},
    "德阳": {"lat": 31.1300, "lon": 104.3800, "province": "四川"},
    "绵阳": {"lat": 31.4660, "lon": 104.6790, "province": "四川"},
    "广元": {"lat": 32.4300, "lon": 105.8200, "province": "四川"},
    "遂宁": {"lat": 30.5300, "lon": 105.5700, "province": "四川"},
    "内江": {"lat": 29.5800, "lon": 105.0500, "province": "四川"},
    "乐山": {"lat": 29.6000, "lon": 103.7600, "province": "四川"},
    "南充": {"lat": 30.7900, "lon": 106.1100, "province": "四川"},
    "眉山": {"lat": 30.0500, "lon": 103.8300, "province": "四川"},
    "宜宾": {"lat": 28.7500, "lon": 104.6400, "province": "四川"},
    "广安": {"lat": 30.4600, "lon": 106.6400, "province": "四川"},
    "达州": {"lat": 31.2100, "lon": 107.4700, "province": "四川"},
    "雅安": {"lat": 30.0100, "lon": 103.0400, "province": "四川"},
    "巴中": {"lat": 31.8600, "lon": 106.7500, "province": "四川"},
    "资阳": {"lat": 30.1200, "lon": 104.6300, "province": "四川"},
    "阿坝": {"lat": 31.9000, "lon": 102.2200, "province": "四川"},
    "甘孜": {"lat": 30.0500, "lon": 101.9600, "province": "四川"},
    "凉山": {"lat": 27.8900, "lon": 102.2600, "province": "四川"},

    # ===== 贵州 =====
    "贵阳": {"lat": 26.6477, "lon": 106.6302, "province": "贵州"},
    "六盘水": {"lat": 26.5900, "lon": 104.8300, "province": "贵州"},
    "遵义": {"lat": 27.7256, "lon": 106.9370, "province": "贵州"},
    "安顺": {"lat": 26.2500, "lon": 105.9300, "province": "贵州"},
    "毕节": {"lat": 27.3000, "lon": 105.2900, "province": "贵州"},
    "铜仁": {"lat": 27.7300, "lon": 109.1900, "province": "贵州"},
    "黔东南": {"lat": 26.5800, "lon": 107.9800, "province": "贵州"},
    "黔南": {"lat": 26.2500, "lon": 107.5200, "province": "贵州"},
    "黔西南": {"lat": 25.0900, "lon": 104.9000, "province": "贵州"},

    # ===== 云南 =====
    "昆明": {"lat": 25.0409, "lon": 102.7123, "province": "云南"},
    "曲靖": {"lat": 25.5000, "lon": 103.7900, "province": "云南"},
    "玉溪": {"lat": 24.3500, "lon": 102.5400, "province": "云南"},
    "保山": {"lat": 25.1100, "lon": 99.1600, "province": "云南"},
    "昭通": {"lat": 27.3400, "lon": 103.7100, "province": "云南"},
    "丽江": {"lat": 26.8721, "lon": 100.2330, "province": "云南"},
    "普洱": {"lat": 22.7700, "lon": 100.9700, "province": "云南"},
    "临沧": {"lat": 23.8800, "lon": 100.0800, "province": "云南"},
    "大理": {"lat": 25.6065, "lon": 100.2670, "province": "云南"},
    "楚雄": {"lat": 25.0400, "lon": 101.5400, "province": "云南"},
    "红河": {"lat": 23.3700, "lon": 103.3900, "province": "云南"},
    "文山": {"lat": 23.4000, "lon": 104.2300, "province": "云南"},
    "西双版纳": {"lat": 21.9900, "lon": 100.7900, "province": "云南"},
    "德宏": {"lat": 24.4300, "lon": 98.5800, "province": "云南"},
    "怒江": {"lat": 25.8500, "lon": 98.8500, "province": "云南"},
    "迪庆": {"lat": 27.8200, "lon": 99.7000, "province": "云南"},

    # ===== 西藏 =====
    "拉萨": {"lat": 29.6500, "lon": 91.1000, "province": "西藏"},
    "日喀则": {"lat": 29.2780, "lon": 88.8820, "province": "西藏"},
    "昌都": {"lat": 31.1300, "lon": 97.1700, "province": "西藏"},
    "林芝": {"lat": 29.6500, "lon": 94.3500, "province": "西藏"},
    "山南": {"lat": 29.2300, "lon": 91.7700, "province": "西藏"},
    "那曲": {"lat": 31.4700, "lon": 92.0500, "province": "西藏"},
    "阿里": {"lat": 30.4000, "lon": 81.1500, "province": "西藏"},

    # ===== 陕西 =====
    "西安": {"lat": 34.3416, "lon": 108.9398, "province": "陕西"},
    "铜川": {"lat": 34.9000, "lon": 108.9500, "province": "陕西"},
    "宝鸡": {"lat": 34.3600, "lon": 107.1500, "province": "陕西"},
    "咸阳": {"lat": 34.3300, "lon": 108.7000, "province": "陕西"},
    "渭南": {"lat": 34.5000, "lon": 109.5000, "province": "陕西"},
    "延安": {"lat": 36.5855, "lon": 109.4900, "province": "陕西"},
    "汉中": {"lat": 33.0600, "lon": 107.0300, "province": "陕西"},
    "榆林": {"lat": 38.2800, "lon": 109.7300, "province": "陕西"},
    "安康": {"lat": 32.6800, "lon": 109.0200, "province": "陕西"},
    "商洛": {"lat": 33.8700, "lon": 109.9300, "province": "陕西"},

    # ===== 甘肃 =====
    "兰州": {"lat": 36.0611, "lon": 103.8343, "province": "甘肃"},
    "嘉峪关": {"lat": 39.7900, "lon": 98.2800, "province": "甘肃"},
    "金昌": {"lat": 38.5200, "lon": 102.1800, "province": "甘肃"},
    "白银": {"lat": 36.5400, "lon": 104.1800, "province": "甘肃"},
    "天水": {"lat": 34.5800, "lon": 105.7200, "province": "甘肃"},
    "武威": {"lat": 37.9300, "lon": 102.6300, "province": "甘肃"},
    "张掖": {"lat": 38.9300, "lon": 100.4500, "province": "甘肃"},
    "平凉": {"lat": 35.5400, "lon": 106.6800, "province": "甘肃"},
    "酒泉": {"lat": 39.7300, "lon": 98.5000, "province": "甘肃"},
    "庆阳": {"lat": 35.7300, "lon": 107.6300, "province": "甘肃"},
    "定西": {"lat": 35.5800, "lon": 104.6200, "province": "甘肃"},
    "陇南": {"lat": 33.4000, "lon": 104.9200, "province": "甘肃"},
    "临夏": {"lat": 35.6000, "lon": 103.2000, "province": "甘肃"},
    "甘南": {"lat": 34.9800, "lon": 102.9000, "province": "甘肃"},

    # ===== 青海 =====
    "西宁": {"lat": 36.6171, "lon": 101.7785, "province": "青海"},
    "海东": {"lat": 36.5000, "lon": 102.1000, "province": "青海"},
    "海北": {"lat": 36.9500, "lon": 100.9000, "province": "青海"},
    "黄南": {"lat": 35.5200, "lon": 102.0200, "province": "青海"},
    "海南": {"lat": 36.2800, "lon": 100.6200, "province": "青海"},
    "果洛": {"lat": 34.4700, "lon": 100.2300, "province": "青海"},
    "玉树": {"lat": 33.0000, "lon": 97.0000, "province": "青海"},
    "海西": {"lat": 37.3700, "lon": 97.3700, "province": "青海"},
    "格尔木": {"lat": 36.4060, "lon": 94.9010, "province": "青海"},

    # ===== 宁夏 =====
    "银川": {"lat": 38.4710, "lon": 106.2580, "province": "宁夏"},
    "石嘴山": {"lat": 39.0140, "lon": 106.3840, "province": "宁夏"},
    "吴忠": {"lat": 38.0000, "lon": 106.2000, "province": "宁夏"},
    "固原": {"lat": 36.0000, "lon": 106.2800, "province": "宁夏"},
    "中卫": {"lat": 37.5100, "lon": 105.1800, "province": "宁夏"},

    # ===== 新疆 =====
    "乌鲁木齐": {"lat": 43.8266, "lon": 87.6168, "province": "新疆"},
    "克拉玛依": {"lat": 45.5900, "lon": 84.8700, "province": "新疆"},
    "吐鲁番": {"lat": 42.9500, "lon": 89.1800, "province": "新疆"},
    "哈密": {"lat": 42.8200, "lon": 93.5200, "province": "新疆"},
    "昌吉": {"lat": 44.0200, "lon": 87.2700, "province": "新疆"},
    "博州": {"lat": 44.9000, "lon": 82.0700, "province": "新疆"},
    "巴州": {"lat": 41.7300, "lon": 86.1500, "province": "新疆"},
    "阿克苏": {"lat": 41.1700, "lon": 80.2600, "province": "新疆"},
    "克州": {"lat": 39.7200, "lon": 76.1000, "province": "新疆"},
    "喀什": {"lat": 39.4670, "lon": 75.9890, "province": "新疆"},
    "和田": {"lat": 37.1200, "lon": 79.9200, "province": "新疆"},
    "伊犁": {"lat": 43.9200, "lon": 81.3200, "province": "新疆"},
    "塔城": {"lat": 46.7300, "lon": 83.0000, "province": "新疆"},
    "阿勒泰": {"lat": 47.8300, "lon": 88.1300, "province": "新疆"},
    "石河子": {"lat": 44.3000, "lon": 86.0300, "province": "新疆"},

    # ===== 台湾 =====
    "台北": {"lat": 25.0330, "lon": 121.5654, "province": "台湾"},
    "高雄": {"lat": 22.6273, "lon": 120.3014, "province": "台湾"},
    "台中": {"lat": 24.1470, "lon": 120.6730, "province": "台湾"},
    "台南": {"lat": 22.9900, "lon": 120.2100, "province": "台湾"},
    "基隆": {"lat": 25.1200, "lon": 121.7500, "province": "台湾"},
    "新竹": {"lat": 24.8000, "lon": 120.9800, "province": "台湾"},
    "嘉义": {"lat": 23.4800, "lon": 120.4500, "province": "台湾"},

    # ===== 香港澳门 =====
    "香港": {"lat": 22.3193, "lon": 114.1694, "province": "香港"},
    "澳门": {"lat": 22.1987, "lon": 113.5439, "province": "澳门"},
}

# ==================== WeatherAPI 类 ====================
class WeatherAPI:
    @staticmethod
    def get_current_weather(city_name):
        if city_name not in ALL_CITIES:
            return None
        coords = ALL_CITIES[city_name]
        url = f"https://api.open-meteo.com/v1/forecast?latitude={coords['lat']}&longitude={coords['lon']}&current=temperature_2m,relative_humidity_2m,windspeed_10m,winddirection_10m&timezone=Asia/Shanghai"
        try:
            resp = requests.get(url, timeout=10)
            data = resp.json()
            current = data.get('current', {})
            if not current:
                return None
            return {
                "城市": city_name,
                "温度": current.get('temperature_2m', 'N/A'),
                "湿度": current.get('relative_humidity_2m', 'N/A'),
                "风速": current.get('windspeed_10m', 'N/A'),
                "风向": current.get('winddirection_10m', 'N/A'),
                "时间": current.get('time', 'N/A')
            }
        except Exception:
            return None

    @staticmethod
    def get_forecast(city_name, days=3):
        if city_name not in ALL_CITIES:
            return None
        coords = ALL_CITIES[city_name]
        url = f"https://api.open-meteo.com/v1/forecast?latitude={coords['lat']}&longitude={coords['lon']}&daily=temperature_2m_max,temperature_2m_min,weathercode&timezone=Asia/Shanghai&forecast_days={days}"
        try:
            resp = requests.get(url, timeout=10)
            data = resp.json()
            daily = data.get('daily', {})
            result = []
            for i in range(len(daily.get('time', []))):
                result.append({
                    "日期": daily['time'][i],
                    "最高温": daily['temperature_2m_max'][i],
                    "最低温": daily['temperature_2m_min'][i],
                    "天气代码": daily['weathercode'][i] if i < len(daily['weathercode']) else 0
                })
            return result
        except Exception:
            return None


# ==================== 分析工具 ====================
def analyze_comfort(temperature, humidity=None):
    try:
        t = float(temperature)
        if 18 <= t <= 25:
            temp_score = 1.0
        elif 15 <= t < 18 or 25 < t <= 30:
            temp_score = 0.7
        elif 10 <= t < 15 or 30 < t <= 35:
            temp_score = 0.4
        else:
            temp_score = 0.2
        if humidity is not None:
            try:
                h = float(humidity)
                if 40 <= h <= 70:
                    hum_score = 1.0
                elif 30 <= h < 40 or 70 < h <= 80:
                    hum_score = 0.6
                else:
                    hum_score = 0.3
            except:
                hum_score = 0.5
        else:
            hum_score = 0.5
        total_score = temp_score * 0.7 + hum_score * 0.3
        if total_score >= 0.8:
            label = "非常舒适"
        elif total_score >= 0.6:
            label = "舒适"
        elif total_score >= 0.4:
            label = "一般"
        else:
            label = "不舒适"
        return label, total_score
    except:
        return "未知", 0.5


# ==================== 微信回复专用函数 ====================
def get_weather_text(city_name):
    if city_name not in ALL_CITIES:
        return f"❌ 未找到城市“{city_name}”，请检查名称。"

    current = WeatherAPI.get_current_weather(city_name)
    if not current:
        return f"❌ 获取{city_name}天气失败，请稍后重试。"

    forecast = WeatherAPI.get_forecast(city_name, 3)
    comfort_label, _ = analyze_comfort(current['温度'], current['湿度'])

    msg = f"🌤️ {city_name} 当前天气\n"
    msg += f"温度：{current['温度']}°C\n"
    msg += f"湿度：{current['湿度']}%\n"
    msg += f"风速：{current['风速']} km/h\n"
    msg += f"舒适度：{comfort_label}\n"
    msg += f"更新时间：{current['时间']}\n"

    if forecast and len(forecast) >= 3:
        msg += "\n📅 未来三天预报：\n"
        weather_map = {0: "晴", 1: "少云", 2: "多云", 3: "阴", 45: "雾", 51: "小雨", 61: "中雨", 71: "小雪"}
        for day in forecast[:3]:
            desc = weather_map.get(day['天气代码'], "多云")
            msg += f"{day['日期'][5:]}: {desc} {day['最低温']}~{day['最高温']}°C\n"
    return msg