import React from 'react';

interface VendorStockBadgeProps {
    asin: string;
    vendorStockMap?: Map<string, { eu: number; uk: number }>;
    mode: 'eu' | 'uk';
    avgWeeklySales?: number;
}

export const VendorStockBadge: React.FC<VendorStockBadgeProps> = ({ asin, vendorStockMap, mode, avgWeeklySales }) => {
    if (!vendorStockMap || !asin) return null;

    const stockData = vendorStockMap.get(asin.toUpperCase());
    if (!stockData) return null;

    const stock = mode === 'uk' ? stockData.uk : stockData.eu;

    // Calculate Weeks of Coverage (WOC)
    // If we have sales velocity, calculate coverage.
    // If sales are 0 but we have stock, coverage is effectively infinite (> 4 weeks) -> Green.
    // If sales are 0 and stock is 0, coverage is 0 -> Red.
    let woc: number | null = null;
    const velocity = avgWeeklySales || 0;

    if (velocity > 0) {
        woc = stock / velocity;
    } else if (stock > 0) {
        woc = 999; // Infinite/Safe
    } else {
        woc = 0; // No stock, no sales -> Empty/Red
    }

    const wocColor = woc < 4 ? 'text-rose-500' : 'text-emerald-500';
    const wocText = woc === 999 ? '> 52 Weeks' : `${woc.toFixed(1)} Weeks Cover`;

    const themeClasses = "bg-slate-200 text-slate-800 border-slate-300 shadow-sm";

    return (
        <div className="flex flex-col items-center gap-0.5">
            <div
                className={`inline-flex items-center gap-1 px-2 py-0.5 rounded border text-[10px] font-bold transition-all hover:scale-105 active:scale-95 cursor-default ${themeClasses}`}
                title={`Stock en Amazon Warehouse (${mode.toUpperCase()}): ${stock}`}
            >
                <svg
                    className="w-3.5 h-3.5"
                    viewBox="0 0 24 24"
                    fill="none"
                    xmlns="http://www.w3.org/2000/svg"
                >
                    <path
                        d="M17.5 14c.5 0 1 .5 1 1s-.5 1-1 1-1-.5-1-1 .5-1 1-1zm-11 0c.5 0 1 .5 1 1s-.5 1-1 1-1-.5-1-1 .5-1 1-1z"
                        fill="currentColor"
                    />
                    <path
                        d="M3 13.5c0 4.7 3.8 8.5 8.5 8.5s8.5-3.8 8.5-8.5"
                        stroke="currentColor"
                        strokeWidth="1.5"
                        strokeLinecap="round"
                    />
                    <path
                        d="M17 18.5c-1.5 1.5-3.5 2.5-5.5 2.5s-4-1-5.5-2.5"
                        stroke="currentColor"
                        strokeWidth="1.5"
                        strokeLinecap="round"
                    />
                    <path
                        d="M19 18.5l1.5 1.5M5 18.5L3.5 20"
                        stroke="currentColor"
                        strokeWidth="1.5"
                        strokeLinecap="round"
                    />
                </svg>
                <div className="flex flex-col leading-[0.8]">
                    <span className="text-[7px] font-black uppercase opacity-60">Vendor</span>
                    <span>{stock.toLocaleString('de-DE')}</span>
                </div>
            </div>
            <div className={`text-[9px] font-black uppercase tracking-tighter ${wocColor}`}>
                {wocText}
            </div>
        </div>
    );
};