package ipgeo

import (
	"github.com/xgadget-lab/nexttrace/util"
	"io"
	"net/http"
	"strconv"
	"strings"
	"time"

	"github.com/tidwall/gjson"
)

func IPInfo(ip string, timeout time.Duration, _ string, _ bool) (*IPGeoData, error) {
	url := "http://ipinfo.io/" + ip + "?token=" + token.ipinfo
	client := &http.Client{
		// 2 秒超时
		Timeout: timeout,
	}
	resp, err := client.Get(url)
	//resp, err := http.Get("https://ipinfo.io/" + ip + "?token=" + token.ipinfo)
	if err != nil {
		return nil, err
	}
	defer resp.Body.Close()
	body, err := io.ReadAll(resp.Body)
	if err != nil {
		return nil, err
	}

	res := gjson.ParseBytes(body)

	// ISO-3166 转换
	var countryMap = map[string]string{
		"AF": "Afghanistan",
		"AX": "Åland Islands",
		"AL": "Albania",
		"DZ": "Algeria",
		"AS": "American Samoa",
		"AD": "Andorra",
		"AO": "Angola",
		"AI": "Anguilla",
		"AQ": "Antarctica",
		"AG": "Antigua and Barbuda",
		"AR": "Argentina",
		"AM": "Armenia",
		"AW": "Aruba",
		"AU": "Australia",
		"AT": "Austria",
		"AZ": "Azerbaijan",
		"BH": "Bahrain",
		"BS": "Bahamas",
		"BD": "Bangladesh",
		"BB": "Barbados",
		"BY": "Belarus",
		"BE": "Belgium",
		"BZ": "Belize",
		"BJ": "Benin",
		"BM": "Bermuda",
		"BT": "Bhutan",
		"BO": "Bolivia",
		"BQ": "Bonaire",
		"BA": "Bosnia and Herzegovina",
		"BW": "Botswana",
		"BV": "Bouvet Island",
		"BR": "Brazil",
		"IO": "British Indian Ocean Territory",
		"BN": "Brunei Darussalam",
		"BG": "Bulgaria",
		"BF": "Burkina Faso",
		"BI": "Burundi",
		"KH": "Cambodia",
		"CM": "Cameroon",
		"CA": "Canada",
		"CV": "Cape Verde",
		"KY": "Cayman Islands",
		"CF": "Central African Republic",
		"TD": "Chad",
		"CL": "Chile",
		"CN": "China",
		"CX": "Christmas Island",
		"CC": "Cocos (Keeling) Islands",
		"CO": "Colombia",
		"KM": "Comoros",
		"CG": "Congo",
		"CD": "Congo",
		"CK": "Cook Islands",
		"CR": "Costa Rica",
		"CI": "Côte d'Ivoire",
		"HR": "Croatia",
		"CU": "Cuba",
		"CW": "Curaçao",
		"CY": "Cyprus",
		"CZ": "Czech Republic",
		"DK": "Denmark",
		"DJ": "Djibouti",
		"DM": "Dominica",
		"DO": "Dominican Republic",
		"EC": "Ecuador",
		"EG": "Egypt",
		"SV": "El Salvador",
		"GQ": "Equatorial Guinea",
		"ER": "Eritrea",
		"EE": "Estonia",
		"ET": "Ethiopia",
		"FK": "Falkland Islands (Malvinas)",
		"FO": "Faroe Islands",
		"FJ": "Fiji",
		"FI": "Finland",
		"FR": "France",
		"GF": "French Guiana",
		"PF": "French Polynesia",
		"TF": "French Southern Territories",
		"GA": "Gabon",
		"GM": "Gambia",
		"GE": "Georgia",
		"DE": "Germany",
		"GH": "Ghana",
		"GI": "Gibraltar",
		"GR": "Greece",
		"GL": "Greenland",
		"GD": "Grenada",
		"GP": "Guadeloupe",
		"GU": "Guam",
		"GT": "Guatemala",
		"GG": "Guernsey",
		"GN": "Guinea",
		"GW": "Guinea-Bissau",
		"GY": "Guyana",
		"HT": "Haiti",
		"HM": "Heard Island and McDonald Islands",
		"VA": "Holy See (Vatican City State)",
		"HN": "Honduras",
		"HK": "Hong Kong",
		"HU": "Hungary",
		"IS": "Iceland",
		"IN": "India",
		"ID": "Indonesia",
		"IR": "Iran",
		"IQ": "Iraq",
		"IE": "Ireland",
		"IM": "Isle of Man",
		"IL": "Israel",
		"IT": "Italy",
		"JM": "Jamaica",
		"JP": "Japan",
		"JE": "Jersey",
		"JO": "Jordan",
		"KZ": "Kazakhstan",
		"KE": "Kenya",
		"KI": "Kiribati",
		"KP": "Korea",
		"KR": "Korea",
		"KW": "Kuwait",
		"KG": "Kyrgyzstan",
		"LA": "Lao People's Democratic Republic",
		"LV": "Latvia",
		"LB": "Lebanon",
		"LS": "Lesotho",
		"LR": "Liberia",
		"LY": "Libya",
		"LI": "Liechtenstein",
		"LT": "Lithuania",
		"LU": "Luxembourg",
		"MO": "Macao",
		"MK": "Macedonia",
		"MG": "Madagascar",
		"MW": "Malawi",
		"MY": "Malaysia",
		"MV": "Maldives",
		"ML": "Mali",
		"MT": "Malta",
		"MH": "Marshall Islands",
		"MQ": "Martinique",
		"MR": "Mauritania",
		"MU": "Mauritius",
		"YT": "Mayotte",
		"MX": "Mexico",
		"FM": "Micronesia",
		"MD": "Moldova",
		"MC": "Monaco",
		"MN": "Mongolia",
		"ME": "Montenegro",
		"MS": "Montserrat",
		"MA": "Morocco",
		"MZ": "Mozambique",
		"MM": "Myanmar",
		"NA": "Namibia",
		"NR": "Nauru",
		"NP": "Nepal",
		"NL": "Netherlands",
		"NC": "New Caledonia",
		"NZ": "New Zealand",
		"NI": "Nicaragua",
		"NE": "Niger",
		"NG": "Nigeria",
		"NU": "Niue",
		"NF": "Norfolk Island",
		"MP": "Northern Mariana Islands",
		"NO": "Norway",
		"OM": "Oman",
		"PK": "Pakistan",
		"PW": "Palau",
		"PS": "Palestine",
		"PA": "Panama",
		"PG": "Papua New Guinea",
		"PY": "Paraguay",
		"PE": "Peru",
		"PH": "Philippines",
		"PN": "Pitcairn",
		"PL": "Poland",
		"PT": "Portugal",
		"PR": "Puerto Rico",
		"QA": "Qatar",
		"RE": "Réunion",
		"RO": "Romania",
		"RU": "Russian Federation",
		"RW": "Rwanda",
		"BL": "Saint Barthélemy",
		"SH": "Saint Helena",
		"KN": "Saint Kitts and Nevis",
		"LC": "Saint Lucia",
		"MF": "Saint Martin (French part)",
		"PM": "Saint Pierre and Miquelon",
		"VC": "Saint Vincent and the Grenadines",
		"WS": "Samoa",
		"SM": "San Marino",
		"ST": "Sao Tome and Principe",
		"SA": "Saudi Arabia",
		"SN": "Senegal",
		"RS": "Serbia",
		"SC": "Seychelles",
		"SL": "Sierra Leone",
		"SG": "Singapore",
		"SX": "Sint Maarten (Dutch part)",
		"SK": "Slovakia",
		"SI": "Slovenia",
		"SB": "Solomon Islands",
		"SO": "Somalia",
		"ZA": "South Africa",
		"GS": "South Georgia and the South Sandwich Islands",
		"SS": "South Sudan",
		"ES": "Spain",
		"LK": "Sri Lanka",
		"SD": "Sudan",
		"SR": "Suriname",
		"SJ": "Svalbard and Jan Mayen",
		"SZ": "Swaziland",
		"SE": "Sweden",
		"CH": "Switzerland",
		"SY": "Syrian Arab Republic",
		"TW": "Taiwan",
		"TJ": "Tajikistan",
		"TZ": "Tanzania",
		"TH": "Thailand",
		"TL": "Timor-Leste",
		"TG": "Togo",
		"TK": "Tokelau",
		"TO": "Tonga",
		"TT": "Trinidad and Tobago",
		"TN": "Tunisia",
		"TR": "Turkey",
		"TM": "Turkmenistan",
		"TC": "Turks and Caicos Islands",
		"TV": "Tuvalu",
		"UG": "Uganda",
		"UA": "Ukraine",
		"AE": "United Arab Emirates",
		"GB": "United Kingdom",
		"US": "United States of America",
		"UM": "United States Minor Outlying Islands",
		"UY": "Uruguay",
		"UZ": "Uzbekistan",
		"VU": "Vanuatu",
		"VE": "Venezuela",
		"VN": "Viet Nam",
		"VG": "Virgin Islands",
		"VI": "Virgin Islands",
		"WF": "Wallis and Futuna",
		"EH": "Western Sahara",
		"YE": "Yemen",
		"ZM": "Zambia",
		"ZW": "Zimbabwe",
	}
	var country = res.Get("country").String()
	var prov = res.Get("region").String()
	var city = res.Get("city").String()
	var district = ""
	if util.StringInSlice(country, []string{"TW", "MO", "HK"}) {
		district = prov + " " + city
		city = countryMap[country]
		prov = ""
		country = "CN"
	}
	country = countryMap[country]

	var anycast = false
	if res.Get("anycast").String() == "true" {
		country = "ANYCAST"
		prov = "ANYCAST"
		city = ""
		anycast = true
	}

	i := strings.Index(res.Get("org").String(), " ")
	var owner string
	if i == -1 {
		owner = ""
	} else {
		owner = res.Get("org").String()[i:]
	}

	var asnumber = ""
	// 有时候不返回asn或其本身没有asn
	if strings.HasPrefix(res.Get("org").String(), "AS") {
		asnumber = strings.Fields(strings.TrimPrefix(res.Get("org").String(), "AS"))[0]
	}

	//"loc": "34.0522,-118.2437",
	var lat, lng float64
	if res.Get("loc").String() != "" {
		lat, _ = strconv.ParseFloat(strings.Split(res.Get("loc").String(), ",")[0], 32)
		lng, _ = strconv.ParseFloat(strings.Split(res.Get("loc").String(), ",")[1], 32)
	}
	if anycast {
		lat, lng = 0, 0
	}

	return &IPGeoData{
		Asnumber: asnumber,
		Country:  country,
		City:     city,
		Prov:     prov,
		District: district,
		Owner:    owner,
		Lat:      lat,
		Lng:      lng,
	}, nil
}
