/**
 * 生成 lib/data/regions.json — 全国省级 + 地级市（含经度）
 * 运行：node scripts/generate-regions.mjs
 */
import fs from "fs";
import path from "path";
import { fileURLToPath } from "url";

const __dirname = path.dirname(fileURLToPath(import.meta.url));

/** 省级：code(6位), name, longitude */
const PROVINCES = [
  ["110000", "北京市", 116.4074],
  ["120000", "天津市", 117.201],
  ["130000", "河北省", 114.5149],
  ["140000", "山西省", 112.5624],
  ["150000", "内蒙古自治区", 111.7652],
  ["210000", "辽宁省", 123.4315],
  ["220000", "吉林省", 125.3235],
  ["230000", "黑龙江省", 126.6425],
  ["310000", "上海市", 121.4737],
  ["320000", "江苏省", 118.7969],
  ["330000", "浙江省", 120.1536],
  ["340000", "安徽省", 117.283],
  ["350000", "福建省", 119.2965],
  ["360000", "江西省", 115.9092],
  ["370000", "山东省", 117.0009],
  ["410000", "河南省", 113.6254],
  ["420000", "湖北省", 114.3419],
  ["430000", "湖南省", 112.9834],
  ["440000", "广东省", 113.2665],
  ["450000", "广西壮族自治区", 108.3275],
  ["460000", "海南省", 110.3492],
  ["500000", "重庆市", 106.5516],
  ["510000", "四川省", 104.0665],
  ["520000", "贵州省", 106.7135],
  ["530000", "云南省", 102.71],
  ["540000", "西藏自治区", 91.1172],
  ["610000", "陕西省", 108.9398],
  ["620000", "甘肃省", 103.8343],
  ["630000", "青海省", 101.7801],
  ["640000", "宁夏回族自治区", 106.2586],
  ["650000", "新疆维吾尔自治区", 87.6177],
  ["710000", "台湾省", 121.5091],
  ["810000", "香港特别行政区", 114.1694],
  ["820000", "澳门特别行政区", 113.5439],
];

/** 地级市经度（6 位 adcode → 经度），未列出的城市使用省会经度 */
const CITY_LON = {
  110101: 116.4164, 110105: 116.4434, 110108: 116.2983, 110114: 116.2312,
  120101: 117.2147, 120103: 117.2234, 120110: 117.3143, 120116: 117.7105,
  130100: 114.5149, 130200: 118.1802, 130300: 119.6005, 130400: 114.5391,
  130500: 114.5045, 130600: 115.4648, 130700: 114.8863, 130800: 117.9634,
  130900: 116.8388, 131000: 116.6838, 131100: 115.6705,
  140100: 112.5624, 140200: 113.3001, 140300: 113.5805, 140400: 113.1163,
  140500: 112.8513, 140600: 112.4329, 140700: 112.7528, 140800: 111.0075,
  140900: 112.7341, 141000: 111.5189, 141100: 111.1344,
  150100: 111.7652, 150200: 109.8403, 150300: 106.8256, 150400: 118.8869,
  150500: 122.2434, 150600: 109.7813, 150700: 119.7658, 150800: 107.3877,
  150900: 113.1326, 152200: 122.0703, 152500: 116.0476, 152900: 105.7066,
  210100: 123.4315, 210200: 121.6147, 210300: 122.9946, 210400: 123.9572,
  210500: 123.7705, 210600: 124.3545, 210700: 121.1271, 210800: 122.2354,
  210900: 121.6703, 211000: 123.1815, 211100: 122.0696, 211200: 123.8443,
  211300: 120.4504, 211400: 120.8364,
  220100: 125.3235, 220200: 126.5494, 220300: 124.3505, 220400: 125.1437,
  220500: 125.9397, 220600: 126.4278, 220700: 124.8251, 220800: 122.8387,
  222400: 129.5132,
  230100: 126.6425, 230200: 123.9182, 230300: 130.9693, 230400: 130.2979,
  230500: 131.1573, 230600: 125.1031, 230700: 128.8994, 230800: 130.3618,
  230900: 131.0031, 231000: 129.6332, 231100: 127.4990, 231200: 126.9929,
  232700: 124.7115,
  310101: 121.4903, 310104: 121.4365, 310115: 121.5447, 310117: 121.2277,
  320100: 118.7969, 320200: 120.3119, 320300: 117.1848, 320400: 119.9740,
  320500: 120.5853, 320600: 120.8945, 320700: 119.2216, 320800: 119.0153,
  320900: 120.1636, 321000: 119.4129, 321100: 119.4250, 321200: 119.9229,
  321300: 118.2752,
  330100: 120.1551, 330200: 121.5503, 330300: 120.6994, 330400: 120.7555,
  330500: 120.0868, 330600: 120.5820, 330700: 119.6474, 330800: 118.8590,
  330900: 122.2072, 331000: 121.4206, 331100: 119.9229,
  340100: 117.2830, 340200: 118.4329, 340300: 117.3889, 340400: 116.9998,
  340500: 118.5079, 340600: 116.7948, 340700: 117.8166, 340800: 117.0635,
  341000: 118.3375, 341100: 118.3163, 341200: 115.8142, 341300: 116.9641,
  341500: 116.5077, 341600: 115.7789, 341700: 117.4892, 341800: 118.7587,
  350100: 119.2965, 350200: 118.0894, 350300: 119.0078, 350400: 117.6387,
  350500: 118.6757, 350600: 117.6471, 350700: 118.1777, 350800: 117.0179,
  350900: 119.5271,
  360100: 115.9092, 360200: 117.1784, 360300: 113.8546, 360400: 115.9928,
  360500: 114.9308, 360600: 117.0692, 360700: 114.9350, 360800: 114.9928,
  360900: 114.4168, 361000: 116.3582, 361100: 117.9434,
  370100: 117.1205, 370200: 120.3826, 370300: 118.0550, 370400: 117.3237,
  370500: 118.6747, 370600: 121.4479, 370700: 119.1619, 370800: 116.5871,
  370900: 117.0889, 371000: 122.1204, 371100: 119.5269, 371300: 118.3565,
  371400: 116.3575, 371500: 115.9855, 371600: 117.9707, 371700: 115.4809,
  410100: 113.6254, 410200: 114.3076, 410300: 112.4540, 410400: 113.1924,
  410500: 114.3924, 410600: 114.2973, 410700: 113.9268, 410800: 113.2418,
  410900: 115.0293, 411000: 113.8524, 411100: 114.0166, 411200: 111.2001,
  411300: 112.5288, 411400: 115.6564, 411500: 114.0912, 411600: 114.6497,
  411700: 114.0223,
  420100: 114.3055, 420200: 115.0388, 420300: 110.7879, 420500: 111.2865,
  420600: 112.1226, 420700: 114.8949, 420800: 112.1993, 420900: 113.9169,
  421000: 112.2390, 421100: 114.8724, 421200: 114.3225, 421300: 113.3825,
  422800: 109.4882,
  430100: 112.9388, 430200: 113.1340, 430300: 112.9440, 430400: 112.5719,
  430500: 111.4677, 430600: 113.1289, 430700: 111.6985, 430800: 110.4792,
  430900: 112.3550, 431000: 113.0321, 431100: 111.6134, 431200: 109.9782,
  431300: 111.9935, 433100: 109.7397,
  440100: 113.2644, 440200: 113.5972, 440300: 114.0579, 440400: 113.5765,
  440500: 116.6819, 440600: 113.1214, 440700: 113.0815, 440800: 110.3594,
  440900: 110.9255, 441200: 112.4651, 441300: 114.4162, 441400: 116.1222,
  441500: 115.3753, 441600: 114.6978, 441700: 111.9826, 441800: 113.0560,
  441900: 113.7518, 442000: 113.3928, 445100: 116.6226, 445200: 116.3729,
  445300: 112.0444,
  450100: 108.3275, 450200: 109.4281, 450300: 110.2990, 450400: 111.2792,
  450500: 109.1201, 450600: 108.3548, 450700: 108.6544, 450800: 109.5989,
  450900: 110.1648, 451000: 106.6186, 451100: 111.5667, 451200: 108.0856,
  451300: 109.2215, 451400: 107.3647,
  460100: 110.3492, 460200: 109.5119, 460300: 112.3387, 460400: 109.5808,
  469006: 110.3911,
  500103: 106.5629, 500112: 106.6304, 500106: 106.4569, 500117: 106.2656,
  510100: 104.0665, 510300: 104.7734, 510400: 101.7184, 510500: 105.4433,
  510600: 104.3980, 510700: 104.6796, 510800: 105.8298, 510900: 105.5929,
  511000: 105.0584, 511100: 103.7654, 511300: 106.1107, 511400: 103.8485,
  511500: 104.6432, 511600: 106.6332, 511700: 107.4680, 511800: 103.0133,
  511900: 106.7475, 512000: 104.6279, 513200: 102.2247, 513300: 101.9638,
  513400: 102.2587,
  520100: 106.7135, 520200: 104.8304, 520300: 106.9274, 520400: 105.9476,
  520500: 105.2850, 520600: 109.1896, 522300: 104.9064, 522600: 107.9828,
  522700: 107.5172,
  530100: 102.7100, 530300: 103.7962, 530400: 102.5439, 530500: 99.1618,
  530600: 103.7172, 530700: 100.2330, 530800: 100.9723, 530900: 100.0869,
  532300: 101.5460, 532500: 103.3840, 532600: 104.2440, 532800: 100.7979,
  532900: 100.2257, 533100: 98.5894, 533300: 98.8543, 533400: 99.7022,
  540100: 91.1172, 540200: 88.8851, 540300: 97.1785, 540400: 94.3615,
  540500: 91.7731, 540600: 92.0512, 542500: 80.1055,
  610100: 108.9398, 610200: 108.9796, 610300: 107.2376, 610400: 108.7093,
  610500: 109.4897, 610600: 109.4897, 610700: 107.0233, 610800: 109.7346,
  610900: 109.0293, 611000: 109.9404,
  620100: 103.8343, 620200: 98.2892, 620300: 102.1879, 620400: 104.1386,
  620500: 105.7249, 620600: 102.6380, 620700: 100.4498, 620800: 106.6650,
  620900: 98.4945, 621000: 107.6436, 621100: 104.6263, 621200: 104.9294,
  622900: 103.2120, 623000: 102.9110,
  630100: 101.7801, 630200: 102.1043, 632200: 100.9010, 632300: 102.0153,
  632500: 100.6195, 632600: 100.2421, 632700: 97.0085, 632800: 97.3701,
  640100: 106.2586, 640200: 106.3833, 640300: 106.1988, 640400: 106.2852,
  640500: 105.1896,
  650100: 87.6177, 650200: 84.8739, 650400: 89.1841, 650500: 93.5149,
  652300: 87.3040, 652700: 82.0748, 652800: 86.1509, 652900: 80.2606,
  653000: 76.1728, 653100: 75.9891, 653200: 79.9253, 654000: 81.3179,
  654200: 82.9857, 654300: 88.1396,
  710100: 121.5654, 710200: 120.3014,
  810001: 114.1544, 810012: 114.1829,
  820001: 113.5491, 820003: 113.5536,
};

/** modood cities.json — provinceCode(2位) → [code(4位), name][] */
const CITIES_BY_PROVINCE = {
  11: [["1101", "北京市"]],
  12: [["1201", "天津市"]],
  13: [
    ["1301", "石家庄市"], ["1302", "唐山市"], ["1303", "秦皇岛市"], ["1304", "邯郸市"],
    ["1305", "邢台市"], ["1306", "保定市"], ["1307", "张家口市"], ["1308", "承德市"],
    ["1309", "沧州市"], ["1310", "廊坊市"], ["1311", "衡水市"],
  ],
  14: [
    ["1401", "太原市"], ["1402", "大同市"], ["1403", "阳泉市"], ["1404", "长治市"],
    ["1405", "晋城市"], ["1406", "朔州市"], ["1407", "晋中市"], ["1408", "运城市"],
    ["1409", "忻州市"], ["1410", "临汾市"], ["1411", "吕梁市"],
  ],
  15: [
    ["1501", "呼和浩特市"], ["1502", "包头市"], ["1503", "乌海市"], ["1504", "赤峰市"],
    ["1505", "通辽市"], ["1506", "鄂尔多斯市"], ["1507", "呼伦贝尔市"], ["1508", "巴彦淖尔市"],
    ["1509", "乌兰察布市"], ["1522", "兴安盟"], ["1525", "锡林郭勒盟"], ["1529", "阿拉善盟"],
  ],
  21: [
    ["2101", "沈阳市"], ["2102", "大连市"], ["2103", "鞍山市"], ["2104", "抚顺市"],
    ["2105", "本溪市"], ["2106", "丹东市"], ["2107", "锦州市"], ["2108", "营口市"],
    ["2109", "阜新市"], ["2110", "辽阳市"], ["2111", "盘锦市"], ["2112", "铁岭市"],
    ["2113", "朝阳市"], ["2114", "葫芦岛市"],
  ],
  22: [
    ["2201", "长春市"], ["2202", "吉林市"], ["2203", "四平市"], ["2204", "辽源市"],
    ["2205", "通化市"], ["2206", "白山市"], ["2207", "松原市"], ["2208", "白城市"],
    ["2224", "延边朝鲜族自治州"],
  ],
  23: [
    ["2301", "哈尔滨市"], ["2302", "齐齐哈尔市"], ["2303", "鸡西市"], ["2304", "鹤岗市"],
    ["2305", "双鸭山市"], ["2306", "大庆市"], ["2307", "伊春市"], ["2308", "佳木斯市"],
    ["2309", "七台河市"], ["2310", "牡丹江市"], ["2311", "黑河市"], ["2312", "绥化市"],
    ["2327", "大兴安岭地区"],
  ],
  31: [["3101", "上海市"]],
  32: [
    ["3201", "南京市"], ["3202", "无锡市"], ["3203", "徐州市"], ["3204", "常州市"],
    ["3205", "苏州市"], ["3206", "南通市"], ["3207", "连云港市"], ["3208", "淮安市"],
    ["3209", "盐城市"], ["3210", "扬州市"], ["3211", "镇江市"], ["3212", "泰州市"],
    ["3213", "宿迁市"],
  ],
  33: [
    ["3301", "杭州市"], ["3302", "宁波市"], ["3303", "温州市"], ["3304", "嘉兴市"],
    ["3305", "湖州市"], ["3306", "绍兴市"], ["3307", "金华市"], ["3308", "衢州市"],
    ["3309", "舟山市"], ["3310", "台州市"], ["3311", "丽水市"],
  ],
  34: [
    ["3401", "合肥市"], ["3402", "芜湖市"], ["3403", "蚌埠市"], ["3404", "淮南市"],
    ["3405", "马鞍山市"], ["3406", "淮北市"], ["3407", "铜陵市"], ["3408", "安庆市"],
    ["3410", "黄山市"], ["3411", "滁州市"], ["3412", "阜阳市"], ["3413", "宿州市"],
    ["3415", "六安市"], ["3416", "亳州市"], ["3417", "池州市"], ["3418", "宣城市"],
  ],
  35: [
    ["3501", "福州市"], ["3502", "厦门市"], ["3503", "莆田市"], ["3504", "三明市"],
    ["3505", "泉州市"], ["3506", "漳州市"], ["3507", "南平市"], ["3508", "龙岩市"],
    ["3509", "宁德市"],
  ],
  36: [
    ["3601", "南昌市"], ["3602", "景德镇市"], ["3603", "萍乡市"], ["3604", "九江市"],
    ["3605", "新余市"], ["3606", "鹰潭市"], ["3607", "赣州市"], ["3608", "吉安市"],
    ["3609", "宜春市"], ["3610", "抚州市"], ["3611", "上饶市"],
  ],
  37: [
    ["3701", "济南市"], ["3702", "青岛市"], ["3703", "淄博市"], ["3704", "枣庄市"],
    ["3705", "东营市"], ["3706", "烟台市"], ["3707", "潍坊市"], ["3708", "济宁市"],
    ["3709", "泰安市"], ["3710", "威海市"], ["3711", "日照市"], ["3713", "临沂市"],
    ["3714", "德州市"], ["3715", "聊城市"], ["3716", "滨州市"], ["3717", "菏泽市"],
  ],
  41: [
    ["4101", "郑州市"], ["4102", "开封市"], ["4103", "洛阳市"], ["4104", "平顶山市"],
    ["4105", "安阳市"], ["4106", "鹤壁市"], ["4107", "新乡市"], ["4108", "焦作市"],
    ["4109", "濮阳市"], ["4110", "许昌市"], ["4111", "漯河市"], ["4112", "三门峡市"],
    ["4113", "南阳市"], ["4114", "商丘市"], ["4115", "信阳市"], ["4116", "周口市"],
    ["4117", "驻马店市"],
  ],
  42: [
    ["4201", "武汉市"], ["4202", "黄石市"], ["4203", "十堰市"], ["4205", "宜昌市"],
    ["4206", "襄阳市"], ["4207", "鄂州市"], ["4208", "荆门市"], ["4209", "孝感市"],
    ["4210", "荆州市"], ["4211", "黄冈市"], ["4212", "咸宁市"], ["4213", "随州市"],
    ["4228", "恩施土家族苗族自治州"],
  ],
  43: [
    ["4301", "长沙市"], ["4302", "株洲市"], ["4303", "湘潭市"], ["4304", "衡阳市"],
    ["4305", "邵阳市"], ["4306", "岳阳市"], ["4307", "常德市"], ["4308", "张家界市"],
    ["4309", "益阳市"], ["4310", "郴州市"], ["4311", "永州市"], ["4312", "怀化市"],
    ["4313", "娄底市"], ["4331", "湘西土家族苗族自治州"],
  ],
  44: [
    ["4401", "广州市"], ["4402", "韶关市"], ["4403", "深圳市"], ["4404", "珠海市"],
    ["4405", "汕头市"], ["4406", "佛山市"], ["4407", "江门市"], ["4408", "湛江市"],
    ["4409", "茂名市"], ["4412", "肇庆市"], ["4413", "惠州市"], ["4414", "梅州市"],
    ["4415", "汕尾市"], ["4416", "河源市"], ["4417", "阳江市"], ["4418", "清远市"],
    ["4419", "东莞市"], ["4420", "中山市"], ["4451", "潮州市"], ["4452", "揭阳市"],
    ["4453", "云浮市"],
  ],
  45: [
    ["4501", "南宁市"], ["4502", "柳州市"], ["4503", "桂林市"], ["4504", "梧州市"],
    ["4505", "北海市"], ["4506", "防城港市"], ["4507", "钦州市"], ["4508", "贵港市"],
    ["4509", "玉林市"], ["4510", "百色市"], ["4511", "贺州市"], ["4512", "河池市"],
    ["4513", "来宾市"], ["4514", "崇左市"],
  ],
  46: [
    ["4601", "海口市"], ["4602", "三亚市"], ["4603", "三沙市"], ["4604", "儋州市"],
    ["469006", "万宁市"],
  ],
  50: [
    ["500103", "渝中区"], ["500112", "渝北区"], ["500106", "沙坪坝区"], ["500117", "合川区"],
  ],
  51: [
    ["5101", "成都市"], ["5103", "自贡市"], ["5104", "攀枝花市"], ["5105", "泸州市"],
    ["5106", "德阳市"], ["5107", "绵阳市"], ["5108", "广元市"], ["5109", "遂宁市"],
    ["5110", "内江市"], ["5111", "乐山市"], ["5113", "南充市"], ["5114", "眉山市"],
    ["5115", "宜宾市"], ["5116", "广安市"], ["5117", "达州市"], ["5118", "雅安市"],
    ["5119", "巴中市"], ["5120", "资阳市"], ["5132", "阿坝藏族羌族自治州"],
    ["5133", "甘孜藏族自治州"], ["5134", "凉山彝族自治州"],
  ],
  52: [
    ["5201", "贵阳市"], ["5202", "六盘水市"], ["5203", "遵义市"], ["5204", "安顺市"],
    ["5205", "毕节市"], ["5206", "铜仁市"], ["5223", "黔西南布依族苗族自治州"],
    ["5226", "黔东南苗族侗族自治州"], ["5227", "黔南布依族苗族自治州"],
  ],
  53: [
    ["5301", "昆明市"], ["5303", "曲靖市"], ["5304", "玉溪市"], ["5305", "保山市"],
    ["5306", "昭通市"], ["5307", "丽江市"], ["5308", "普洱市"], ["5309", "临沧市"],
    ["5323", "楚雄彝族自治州"], ["5325", "红河哈尼族彝族自治州"], ["5326", "文山壮族苗族自治州"],
    ["5328", "西双版纳傣族自治州"], ["5329", "大理白族自治州"], ["5331", "德宏傣族景颇族自治州"],
    ["5333", "怒江傈僳族自治州"], ["5334", "迪庆藏族自治州"],
  ],
  54: [
    ["5401", "拉萨市"], ["5402", "日喀则市"], ["5403", "昌都市"], ["5404", "林芝市"],
    ["5405", "山南市"], ["5406", "那曲市"], ["5425", "阿里地区"],
  ],
  61: [
    ["6101", "西安市"], ["6102", "铜川市"], ["6103", "宝鸡市"], ["6104", "咸阳市"],
    ["6105", "渭南市"], ["6106", "延安市"], ["6107", "汉中市"], ["6108", "榆林市"],
    ["6109", "安康市"], ["6110", "商洛市"],
  ],
  62: [
    ["6201", "兰州市"], ["6202", "嘉峪关市"], ["6203", "金昌市"], ["6204", "白银市"],
    ["6205", "天水市"], ["6206", "武威市"], ["6207", "张掖市"], ["6208", "平凉市"],
    ["6209", "酒泉市"], ["6210", "庆阳市"], ["6211", "定西市"], ["6212", "陇南市"],
    ["6229", "临夏回族自治州"], ["6230", "甘南藏族自治州"],
  ],
  63: [
    ["6301", "西宁市"], ["6302", "海东市"], ["6322", "海北藏族自治州"], ["6323", "黄南藏族自治州"],
    ["6325", "海南藏族自治州"], ["6326", "果洛藏族自治州"], ["6327", "玉树藏族自治州"],
    ["6328", "海西蒙古族藏族自治州"],
  ],
  64: [
    ["6401", "银川市"], ["6402", "石嘴山市"], ["6403", "吴忠市"], ["6404", "固原市"],
    ["6405", "中卫市"],
  ],
  65: [
    ["6501", "乌鲁木齐市"], ["6502", "克拉玛依市"], ["6504", "吐鲁番市"], ["6505", "哈密市"],
    ["6523", "昌吉回族自治州"], ["6527", "博尔塔拉蒙古自治州"], ["6528", "巴音郭楞蒙古自治州"],
    ["6529", "阿克苏地区"], ["6530", "克孜勒苏柯尔克孜自治州"], ["6531", "喀什地区"],
    ["6532", "和田地区"], ["6540", "伊犁哈萨克自治州"], ["6542", "塔城地区"], ["6543", "阿勒泰地区"],
  ],
  71: [["710100", "台北市"], ["710200", "高雄市"]],
  81: [["810001", "中西区"], ["810012", "湾仔区"]],
  82: [["820001", "花地玛堂区"], ["820003", "大堂区"]],
};

const MUNICIPALITY_DISTRICTS = {
  110000: [
    ["110101", "东城区"], ["110105", "朝阳区"], ["110108", "海淀区"], ["110114", "昌平区"],
  ],
  120000: [
    ["120101", "和平区"], ["120103", "河西区"], ["120110", "东丽区"], ["120116", "滨海新区"],
  ],
  310000: [
    ["310101", "黄浦区"], ["310104", "徐汇区"], ["310115", "浦东新区"], ["310117", "松江区"],
  ],
};

function cityLongitude(code, provinceLon) {
  const key = Number(code);
  return CITY_LON[key] ?? provinceLon;
}

function buildChildren(provinceCode, provinceLon) {
  const districts = MUNICIPALITY_DISTRICTS[provinceCode];
  if (districts) {
    return Object.fromEntries(
      districts.map(([code, name]) => [
        code,
        { name, longitude: cityLongitude(code, provinceLon) },
      ]),
    );
  }

  const provKey = provinceCode.slice(0, 2);
  const cities = CITIES_BY_PROVINCE[provKey] ?? CITIES_BY_PROVINCE[provinceCode.slice(0, 2)];
  if (!cities) {
    return {};
  }

  return Object.fromEntries(
    cities.map(([code, name]) => {
      const fullCode = code.length === 6 ? code : `${code}00`;
      return [
        fullCode,
        { name, longitude: cityLongitude(fullCode, provinceLon) },
      ];
    }),
  );
}

const regions = {};
for (const [pCode, pName, pLon] of PROVINCES) {
  regions[pCode] = {
    name: pName,
    longitude: pLon,
    children: buildChildren(pCode, pLon),
  };
}

const out = path.join(__dirname, "../lib/data/regions.json");
fs.writeFileSync(out, JSON.stringify(regions, null, 2) + "\n", "utf-8");

let cityCount = 0;
for (const p of Object.values(regions)) {
  cityCount += Object.keys(p.children ?? {}).length;
}
console.log("Wrote", out);
console.log("provinces:", Object.keys(regions).length, "cities:", cityCount);