import { cx } from '@/utils/cx';
import type { Campaign, Lead } from '@/types/entities';

interface ConversionFunnelProps {
    campaign: Campaign;
    leads: Lead[];
}

type FunnelStep = {
    label: string;
    count: number;
    color: string;
};

export const ConversionFunnel = ({ campaign, leads }: ConversionFunnelProps) => {
    const leadCount = campaign.leadCount ?? 0;
    const contactedCount = campaign.contactedCount ?? 0;
    const appointmentCount = leads.filter((l) => l.leadStatus === 'APPOINTMENT_SET').length;
    const convertedCount = campaign.convertedCount ?? 0;

    const steps: FunnelStep[] = [
        { label: 'Leads', count: leadCount, color: 'bg-brand-solid' },
        { label: 'Contacted', count: contactedCount, color: 'bg-brand-primary' },
        { label: 'Appointment Set', count: appointmentCount, color: 'bg-brand-primary_alt' },
        { label: 'Converted', count: convertedCount, color: 'bg-success-solid' },
    ];

    const maxCount = Math.max(...steps.map((s) => s.count), 1);

    return (
        <div className="rounded-xl border border-secondary bg-primary p-4">
            <h4 className="mb-3 text-sm font-bold text-primary">Conversion Funnel</h4>
            <div className="space-y-2.5">
                {steps.map((step) => {
                    const widthPercent = (step.count / maxCount) * 100;
                    return (
                        <div key={step.label} className="flex items-center gap-3">
                            <span className="w-24 shrink-0 text-xs text-tertiary">{step.label}</span>
                            <div className="flex-1">
                                <div className="h-5 rounded bg-secondary overflow-hidden">
                                    <div
                                        className={cx('h-full rounded transition-all duration-300', step.color)}
                                        style={{ width: `${Math.max(widthPercent, 2)}%` }}
                                    />
                                </div>
                            </div>
                            <span className="w-10 shrink-0 text-right text-xs font-bold text-primary">
                                {step.count}
                            </span>
                        </div>
                    );
                })}
            </div>
        </div>
    );
};