import { cx } from '@/utils/cx';
import { formatCurrency } from '@/lib/format';
import type { Campaign } from '@/types/entities';

interface KpiStripProps {
    campaign: Campaign;
}

type KpiItem = {
    label: string;
    value: string;
    subText: string;
    subColor: string;
};

export const KpiStrip = ({ campaign }: KpiStripProps) => {
    const leadCount = campaign.leadCount ?? 0;
    const contactedCount = campaign.contactedCount ?? 0;
    const convertedCount = campaign.convertedCount ?? 0;
    const spentMicros = campaign.amountSpent?.amountMicros ?? 0;
    const budgetMicros = campaign.budget?.amountMicros ?? 0;
    const currencyCode = campaign.amountSpent?.currencyCode ?? 'INR';

    const contactRate = leadCount > 0 ? ((contactedCount / leadCount) * 100).toFixed(1) : '0.0';
    const conversionRate = leadCount > 0 ? ((convertedCount / leadCount) * 100).toFixed(1) : '0.0';
    const budgetPercent = budgetMicros > 0 ? ((spentMicros / budgetMicros) * 100).toFixed(0) : '--';
    const costPerLead = leadCount > 0 ? formatCurrency(spentMicros / leadCount, currencyCode) : '--';
    const cac = convertedCount > 0 ? formatCurrency(spentMicros / convertedCount, currencyCode) : '--';

    const items: KpiItem[] = [
        {
            label: 'Total Leads',
            value: String(leadCount),
            subText: `${campaign.impressionCount ?? 0} impressions`,
            subColor: 'text-tertiary',
        },
        {
            label: 'Contacted',
            value: String(contactedCount),
            subText: `${contactRate}% contact rate`,
            subColor: 'text-success-primary',
        },
        {
            label: 'Converted',
            value: String(convertedCount),
            subText: `${conversionRate}% conversion`,
            subColor: 'text-success-primary',
        },
        {
            label: 'Spent',
            value: formatCurrency(spentMicros, currencyCode),
            subText: `${budgetPercent}% of budget`,
            subColor: Number(budgetPercent) > 90 ? 'text-error-primary' : 'text-warning-primary',
        },
        {
            label: 'Cost / Lead',
            value: costPerLead,
            subText: 'avg per lead',
            subColor: 'text-tertiary',
        },
        {
            label: 'CAC',
            value: cac,
            subText: 'per conversion',
            subColor: 'text-tertiary',
        },
    ];

    return (
        <div className="flex items-stretch border-b border-secondary bg-primary px-7 py-4">
            {items.map((item, index) => (
                <div
                    key={item.label}
                    className={cx(
                        'flex flex-1 flex-col justify-center px-4',
                        index === 0 && 'pl-0',
                        index === items.length - 1 && 'pr-0',
                        index < items.length - 1 && 'border-r border-tertiary',
                    )}
                >
                    <p className="text-xl font-bold text-primary">{item.value}</p>
                    <p className="text-xs font-medium uppercase text-quaternary">{item.label}</p>
                    <p className={cx('mt-0.5 text-xs', item.subColor)}>{item.subText}</p>
                </div>
            ))}
        </div>
    );
};