import dayjs from "dayjs";

type ValueResolver = (
    oldVal: any,
    newVal: any,
    ctx?: Record<string, any>
) => { oldVal: any; newVal: any };

const TOKEN_TRANSLATIONS: Record<string, string> = {
    account: "Konto",
    active: "Aktiv",
    address: "Adresse",
    amount: "Betrag",
    archived: "Archiviert",
    article: "Artikel",
    bank: "Bank",
    barcode: "Barcode",
    birthday: "Geburtstag",
    category: "Kategorie",
    city: "Ort",
    color: "Farbe",
    comment: "Kommentar",
    company: "Firma",
    contact: "Kontakt",
    contract: "Vertrag",
    cost: "Kosten",
    country: "Land",
    created: "Erstellt",
    customer: "Kunde",
    date: "Datum",
    default: "Standard",
    deleted: "Gelöscht",
    delivery: "Lieferung",
    description: "Beschreibung",
    document: "Dokument",
    driver: "Fahrer",
    due: "Fällig",
    duration: "Dauer",
    email: "E-Mail",
    employee: "Mitarbeiter",
    enabled: "Aktiviert",
    end: "Ende",
    event: "Ereignis",
    file: "Datei",
    first: "Vorname",
    fixed: "Festgeschrieben",
    group: "Gruppe",
    hour: "Stunde",
    iban: "IBAN",
    id: "ID",
    incoming: "Eingang",
    invoice: "Rechnung",
    item: "Eintrag",
    language: "Sprache",
    last: "Nachname",
    license: "Kennzeichen",
    link: "Link",
    list: "Liste",
    location: "Standort",
    manufacturer: "Hersteller",
    markup: "Verkaufsaufschlag",
    message: "Nachricht",
    mobile: "Mobil",
    name: "Name",
    note: "Notiz",
    notes: "Notizen",
    number: "Nummer",
    order: "Bestellung",
    own: "Eigen",
    payment: "Zahlung",
    phone: "Telefon",
    plant: "Objekt",
    postal: "Post",
    price: "Preis",
    percentage: "%",
    product: "Produkt",
    profile: "Profil",
    project: "Projekt",
    purchase: "Kauf",
    quantity: "Menge",
    rate: "Satz",
    reference: "Referenz",
    requisition: "Anfrage",
    resource: "Ressource",
    role: "Rolle",
    serial: "Serien",
    service: "Leistung",
    selling: "Verkauf",
    sellign: "Verkauf",
    space: "Lagerplatz",
    start: "Start",
    statement: "Buchung",
    status: "Status",
    street: "Straße",
    surcharge: "Aufschlag",
    tax: "Steuer",
    tel: "Telefon",
    tenant: "Mandant",
    time: "Zeit",
    title: "Titel",
    total: "Gesamt",
    type: "Typ",
    unit: "Einheit",
    updated: "Aktualisiert",
    user: "Benutzer",
    ustid: "USt-ID",
    value: "Wert",
    vendor: "Lieferant",
    vehicle: "Fahrzeug",
    weekly: "Wöchentlich",
    working: "Arbeits",
    zip: "Postleitzahl",
    composed: "Zusammensetzung",
    material: "Material",
    worker: "Arbeit",
};

function tokenizeKey(key: string): string[] {
    return key
        .replace(/([a-z0-9])([A-Z])/g, "$1_$2")
        .replace(/[^a-zA-Z0-9]+/g, "_")
        .split("_")
        .filter(Boolean)
        .map((p) => p.toLowerCase());
}

function capitalize(word: string) {
    if (!word) return word;
    return word.charAt(0).toUpperCase() + word.slice(1);
}

function fallbackLabelFromKey(key: string): string {
    const parts = tokenizeKey(key);
    if (!parts.length) return key;

    if (parts.length > 1 && parts[parts.length - 1] === "id") {
        const base = parts.slice(0, -1).map((p) => TOKEN_TRANSLATIONS[p] || capitalize(p)).join(" ");
        return `${base} ID`.trim();
    }

    return parts
        .map((p) => TOKEN_TRANSLATIONS[p] || capitalize(p))
        .join(" ")
        .replace(/\s+/g, " ")
        .trim();
}

export function getDiffLabel(key: string): string {
    return diffTranslations[key]?.label || fallbackLabelFromKey(key);
}

export const diffTranslations: Record<
    string,
    { label: string; resolve?: ValueResolver }
> = {
    project: {
        label: "Projekt",
        resolve: (o, n, ctx) => ({
            oldVal: o ? ctx?.projects?.find((i: any) => i.id === o)?.name ?? "-" : "-",
            newVal: n ? ctx?.projects?.find((i: any) => i.id === n)?.name ?? "-" : "-",
        }),
    },
    title: { label: "Titel" },
    type: { label: "Typ" },
    notes: { label: "Notizen" },
    link: { label: "Link" },

    start: {
        label: "Start",
        resolve: (o, n) => ({
            oldVal: o ? dayjs(o).format("DD.MM.YYYY HH:mm") : "-",
            newVal: n ? dayjs(n).format("DD.MM.YYYY HH:mm") : "-",
        }),
    },
    end: {
        label: "Ende",
        resolve: (o, n) => ({
            oldVal: o ? dayjs(o).format("DD.MM.YYYY HH:mm") : "-",
            newVal: n ? dayjs(n).format("DD.MM.YYYY HH:mm") : "-",
        }),
    },
    birthday: {
        label: "Geburtstag",
        resolve: (o, n) => ({
            oldVal: o ? dayjs(o).format("DD.MM.YYYY") : "-",
            newVal: n ? dayjs(n).format("DD.MM.YYYY") : "-",
        }),
    },
    resources: {
        label: "Ressourcen",
        resolve: (o, n) => ({
            oldVal: Array.isArray(o) ? o.map((i: any) => i.title).join(", ") : "-",
            newVal: Array.isArray(n) ? n.map((i: any) => i.title).join(", ") : "-",
        }),
    },

    customerNumber: { label: "Kundennummer" },
    active: {
        label: "Aktiv",
        resolve: (o, n) => ({
            oldVal: o === true ? "Aktiv" : "Gesperrt",
            newVal: n === true ? "Aktiv" : "Gesperrt",
        }),
    },
    isCompany: {
        label: "Firmenkunde",
        resolve: (o, n) => ({
            oldVal: o === true ? "Firma" : "Privatkunde",
            newVal: n === true ? "Firma" : "Privatkunde",
        }),
    },
    special: { label: "Adresszusatz" },
    street: { label: "Straße & Hausnummer" },
    city: { label: "Ort" },
    zip: { label: "Postleitzahl" },
    country: { label: "Land" },
    web: { label: "Webseite" },
    email: { label: "E-Mail" },
    tel: { label: "Telefon" },
    ustid: { label: "USt-ID" },
    role: { label: "Rolle" },
    phoneHome: { label: "Festnetz" },
    phoneMobile: { label: "Mobiltelefon" },
    salutation: { label: "Anrede" },
    firstName: { label: "Vorname" },
    lastName: { label: "Nachname" },
    name: { label: "Name" },
    nameAddition: { label: "Name Zusatz" },
    approved: { label: "Genehmigt" },
    manufacturer: { label: "Hersteller" },
    purchasePrice: { label: "Kaufpreis" },
    markupPercentage: { label: "Verkaufsaufschlag in %" },
    markup_percentage: { label: "Verkaufsaufschlag in %" },
    sellingPrice: { label: "Verkaufspreis" },
    selling_price: { label: "Verkaufspreis" },
    sellingPriceComposed: { label: "Verkaufspreis Zusammensetzung" },
    purchaseDate: { label: "Kaufdatum" },
    serialNumber: { label: "Seriennummer" },
    customerInventoryId: { label: "Kundeninventar-ID" },
    customerinventoryitems: { label: "Kundeninventar" },
    usePlanning: { label: "In Plantafel verwenden" },
    currentSpace: { label: "Lagerplatz" },
    customerspace: { label: "Kundenlagerplatz" },

    customer: {
        label: "Kunde",
        resolve: (o, n, ctx) => ({
            oldVal: o ? ctx?.customers?.find((i: any) => i.id === o)?.name ?? "-" : "-",
            newVal: n ? ctx?.customers?.find((i: any) => i.id === n)?.name ?? "-" : "-",
        }),
    },
    vendor: {
        label: "Lieferant",
        resolve: (o, n, ctx) => ({
            oldVal: o ? ctx?.vendors?.find((i: any) => i.id === o)?.name ?? "-" : "-",
            newVal: n ? ctx?.vendors?.find((i: any) => i.id === n)?.name ?? "-" : "-",
        }),
    },

    description: { label: "Beschreibung" },
    categorie: { label: "Kategorie" },
    category: { label: "Kategorie" },

    profile: {
        label: "Mitarbeiter",
        resolve: (o, n, ctx) => ({
            oldVal: o ? ctx?.profiles?.find((i: any) => i.id === o)?.fullName ?? "-" : "-",
            newVal: n ? ctx?.profiles?.find((i: any) => i.id === n)?.fullName ?? "-" : "-",
        }),
    },
    plant: {
        label: "Objekt",
        resolve: (o, n, ctx) => ({
            oldVal: o ? ctx?.plants?.find((i: any) => i.id === o)?.name ?? "-" : "-",
            newVal: n ? ctx?.plants?.find((i: any) => i.id === n)?.name ?? "-" : "-",
        }),
    },

    annualPaidLeaveDays: { label: "Urlaubstage" },
    employeeNumber: { label: "Mitarbeiternummer" },
    weeklyWorkingDays: { label: "Wöchentliche Arbeitstage" },
    weeklyWorkingHours: { label: "Wöchentliche Arbeitszeit" },
    customerRef: { label: "Referenz des Kunden" },

    licensePlate: { label: "Kennzeichen" },
    tankSize: { label: "Tankvolumen" },
    towingCapacity: { label: "Anhängelast" },
    color: { label: "Farbe" },
    customPaymentDays: { label: "Zahlungsziel in Tagen" },
    customSurchargePercentage: { label: "Individueller Aufschlag" },
    powerInKW: { label: "Leistung" },

    driver: {
        label: "Fahrer",
        resolve: (o, n, ctx) => ({
            oldVal: o ? ctx?.profiles?.find((i: any) => i.id === o)?.fullName ?? "-" : "-",
            newVal: n ? ctx?.profiles?.find((i: any) => i.id === n)?.fullName ?? "-" : "-",
        }),
    },

    projecttype: { label: "Projekttyp" },
    contracttype: { label: "Vertragstyp" },
    billingInterval: { label: "Abrechnungsintervall" },

    fixed: {
        label: "Festgeschrieben",
        resolve: (o, n) => ({
            oldVal: o === true ? "Ja" : "Nein",
            newVal: n === true ? "Ja" : "Nein",
        }),
    },
    archived: {
        label: "Archiviert",
        resolve: (o, n) => ({
            oldVal: o === true ? "Ja" : "Nein",
            newVal: n === true ? "Ja" : "Nein",
        }),
    },
};