import { Button } from '@/components/base/buttons/button';
import { Badge } from '@/components/base/badges/badges';
import { WhatsAppMockup } from './whatsapp-mockup';
import type { WhatsAppTemplate } from '@/types/entities';

interface TemplatePreviewProps {
    template: WhatsAppTemplate;
}

const variableDescriptions: Record<string, string> = {
    patient_name: "Lead's contact name",
    hospital_name: 'Clinic or hospital name',
    campaign_name: 'Linked campaign name',
    booking_link: 'Appointment booking URL',
};

export const TemplatePreview = ({ template }: TemplatePreviewProps) => {
    const totalSent = template.sendCount ?? 0;
    const delivered = template.deliveredCount ?? 0;
    const read = template.readCount ?? 0;
    const clicked = template.clickedCount ?? 0;
    const failed = template.failedCount ?? 0;

    const metrics = [
        { label: 'Sent', value: totalSent },
        { label: 'Delivered', value: delivered },
        { label: 'Read', value: read },
        { label: 'Clicked', value: clicked },
        { label: 'Failed', value: failed },
    ];

    return (
        <div className="bg-primary rounded-2xl border border-secondary overflow-hidden">
            {/* Header */}
            <div className="p-5 border-b border-secondary flex items-center justify-between">
                <p className="text-md font-bold text-primary">
                    Template Preview — {template.name}
                </p>
                <Button color="secondary" size="sm">
                    Edit Template
                </Button>
            </div>

            {/* Body */}
            <div className="flex">
                {/* Left: phone mockup */}
                <div className="bg-secondary p-5 flex items-start justify-center flex-shrink-0">
                    <WhatsAppMockup body={template.body ?? ''} variables={template.variables} />
                </div>

                {/* Right: details */}
                <div className="flex-1 p-5 space-y-5">
                    {/* Variables */}
                    {template.variables.length > 0 && (
                        <div>
                            <p className="text-xs font-semibold text-secondary uppercase tracking-wider mb-2">Variables</p>
                            <div className="space-y-1.5">
                                {template.variables.map((variable) => (
                                    <div key={variable} className="flex items-center gap-2 text-sm">
                                        <code className="bg-secondary px-1.5 py-0.5 rounded text-xs text-brand-secondary font-mono">
                                            {`{{${variable}}}`}
                                        </code>
                                        <span className="text-quaternary">→</span>
                                        <span className="text-tertiary">
                                            {variableDescriptions[variable] ?? variable}
                                        </span>
                                    </div>
                                ))}
                            </div>
                        </div>
                    )}

                    {/* Linked Campaign */}
                    <div>
                        <p className="text-xs font-semibold text-secondary uppercase tracking-wider mb-2">Linked Campaign</p>
                        {template.linkedCampaignName ? (
                            <Badge type="pill-color" color="brand" size="md">
                                {template.linkedCampaignName}
                            </Badge>
                        ) : (
                            <Badge type="pill-color" color="gray" size="md">
                                None (Custom)
                            </Badge>
                        )}
                    </div>

                    {/* Approval Status */}
                    <div>
                        <p className="text-xs font-semibold text-secondary uppercase tracking-wider mb-2">Approval Status</p>
                        {template.approvalStatus === 'APPROVED' ? (
                            <Badge type="pill-color" color="success" size="md">
                                ✓ Approved
                            </Badge>
                        ) : template.approvalStatus === 'PENDING' ? (
                            <Badge type="pill-color" color="warning" size="md">
                                ⏳ Pending Review
                            </Badge>
                        ) : (
                            <Badge type="pill-color" color="error" size="md">
                                Rejected
                            </Badge>
                        )}
                    </div>

                    {/* Performance */}
                    <div>
                        <p className="text-xs font-semibold text-secondary uppercase tracking-wider mb-2">Performance</p>
                        <div className="flex gap-3">
                            {metrics.map((metric) => (
                                <div
                                    key={metric.label}
                                    className="flex-1 bg-secondary rounded-xl p-3 text-center min-w-0"
                                >
                                    <p className="text-lg font-bold text-primary">{metric.value}</p>
                                    <p className="text-xs text-quaternary mt-0.5">{metric.label}</p>
                                </div>
                            ))}
                        </div>
                    </div>

                    {/* Languages */}
                    {template.language.length > 0 && (
                        <div>
                            <p className="text-xs font-semibold text-secondary uppercase tracking-wider mb-2">Language</p>
                            <div className="flex flex-wrap gap-1.5">
                                {template.language.map((lang) => (
                                    <Badge key={lang} type="color" color="gray" size="sm">
                                        {lang.toUpperCase()}
                                    </Badge>
                                ))}
                            </div>
                        </div>
                    )}
                </div>
            </div>
        </div>
    );
};