/**
 * Utility functions shared across the MCP server
 */

export const encodeBase64 = (value) => Buffer.from(value, "utf-8").toString("base64");

export const cleanDomainValue = (domain) => {
    if (!domain) {
        return null;
    }
    return domain.replace(/^https?:\/\//i, "").replace(/\/$/, "").toLowerCase();
};

export const mapDomainsForOutput = (domains = []) =>
    domains.map((item) => ({
        num: item.num,
        domain: item.domain,
        label: item.domain,
        isMulti: item.is_multi_child === "1" || item.multiSite === "1",
    }));

export const extractTokenHash = (payload) => {
    if (!payload || typeof payload !== "object") {
        return null;
    }
    if (payload.tokenHash) {
        return payload.tokenHash;
    }
    if (payload.token_hash) {
        return payload.token_hash;
    }
    if (payload.data && typeof payload.data === "object") {
        return extractTokenHash(payload.data);
    }
    return null;
};

export const pickDomain = (domains = [], domainInput, domainNumInput) => {
    if (!domains.length) {
        return null;
    }
    if (domainNumInput != null) {
        const domainNum = String(domainNumInput).trim();
        const domainByNum = domains.find((entry) => String(entry.num).trim() === domainNum);
        if (domainByNum) {
            return domainByNum;
        }
    }

    if (!domainInput) {
        return null;
    }

    const normalizedDomain = cleanDomainValue(domainInput);
    return domains.find((entry) => cleanDomainValue(entry.domain) === normalizedDomain);
};

export const getSessionKey = (username, password) => `${username}::${password}`;