const crypto = require("node:crypto")
const logger = require("../modules/logger")
const { DefaultError } = require("../errors/errors")
const certificatesManager = require("./certificatesManager")

async function getRegistrationCountryFromIp(ipAddress) {
    const apiUrl = `https://ip-api.com/json/${ipAddress}?fields=countryCode`

    try {
        const response = await fetch(apiUrl)
        if (!response.ok) {
            return "FR"
        }

        const data = await response.json()
        if (data && data.countryCode) {
            const countryCode = data.countryCode
            return countryCode
        } else {
            return "FR"
        }

    } catch (error) {
        return "??"
    }
}

function signProfileData(dataBase64) {
    const serverKeys = certificatesManager.getKeys()
    try {
        const privateKey = serverKeys.profilePropertyKeys.private
        const signer = crypto.createSign("SHA1")
        signer.update(dataBase64)
        signer.end()
        return signer.sign(privateKey, "base64")
    } catch (err) {
        console.error("Signing failed:", err)
        return null
    }
}

function addDashesToUUID(uuid) {
    if (typeof uuid !== "string" || uuid.length !== 32) {
        return uuid
    }

    return (
        uuid.slice(0, 8) + "-" +
        uuid.slice(8, 12) + "-" +
        uuid.slice(12, 16) + "-" +
        uuid.slice(16, 20) + "-" +
        uuid.slice(20)
    )
}

function isTrueFromDotEnv(key) {
    return (process.env[key] || "").trim().toLowerCase() === "true"
}

function getUrlParam(url, param) {
    const urlParams = new URLSearchParams(url)
    return urlParams.get(param)
}

function handleDBError(error, errorMessage = "Internal Server Error", code = 500) {
    if (error instanceof DefaultError) {
        throw error
    }
    logger.log(errorMessage.bold + " : " + error.toString(), ["MariaDB", "yellow"])
    throw new DefaultError(code, errorMessage, "InternalServerError")
}

module.exports = {
    getUrlParam,
    handleDBError,
    signProfileData,
    addDashesToUUID,
    isTrueFromDotEnv,
    getRegistrationCountryFromIp,
}