"use client";

import {
  Card,
  CardContent,
  CardDescription,
  CardHeader,
  CardTitle,
} from "@/components/ui/card";
import { Badge } from "@/components/ui/badge";
import { Button } from "@/components/ui/button";
import { CreditCard, Download } from "lucide-react";

type Payment = {
  id: string;
  amount: number;
  method: string;
  status: string;
  transactionId: string | null;
  paidAt: Date | null;
  createdAt: Date;
  appointment: {
    date: Date;
    timeSlot: string;
    service: {
      name: string;
    };
    dentist: {
      name: string;
    };
  };
};

type PaymentHistoryProps = {
  payments: Payment[];
};

export function PaymentHistory({ payments }: PaymentHistoryProps) {
  const getStatusBadge = (status: string) => {
    const variants: Record<
      string,
      "default" | "secondary" | "destructive" | "outline"
    > = {
      paid: "default",
      pending: "secondary",
      failed: "destructive",
      refunded: "outline",
    };

    return (
      <Badge variant={variants[status] || "default"}>
        {status.toUpperCase()}
      </Badge>
    );
  };

  const getMethodIcon = () => {
    return <CreditCard className="h-4 w-4" />;
  };

  const totalPaid = payments
    .filter((p) => p.status === "paid")
    .reduce((sum, p) => sum + p.amount, 0);

  const pendingAmount = payments
    .filter((p) => p.status === "pending")
    .reduce((sum, p) => sum + p.amount, 0);

  return (
    <div className="space-y-4">
      {/* Summary Cards */}
      <div className="grid gap-4 md:grid-cols-3">
        <Card>
          <CardHeader className="pb-2">
            <CardTitle className="text-sm font-medium">Total Paid</CardTitle>
          </CardHeader>
          <CardContent>
            <div className="text-2xl font-bold">₱{totalPaid.toFixed(2)}</div>
            <p className="text-xs text-muted-foreground">All time</p>
          </CardContent>
        </Card>

        <Card>
          <CardHeader className="pb-2">
            <CardTitle className="text-sm font-medium">
              Pending Payments
            </CardTitle>
          </CardHeader>
          <CardContent>
            <div className="text-2xl font-bold">
              ₱{pendingAmount.toFixed(2)}
            </div>
            <p className="text-xs text-muted-foreground">Outstanding balance</p>
          </CardContent>
        </Card>

        <Card>
          <CardHeader className="pb-2">
            <CardTitle className="text-sm font-medium">
              Total Transactions
            </CardTitle>
          </CardHeader>
          <CardContent>
            <div className="text-2xl font-bold">{payments.length}</div>
            <p className="text-xs text-muted-foreground">All payments</p>
          </CardContent>
        </Card>
      </div>

      {/* Payment List */}
      <Card>
        <CardHeader>
          <CardTitle>Transaction History</CardTitle>
          <CardDescription>All your payment transactions</CardDescription>
        </CardHeader>
        <CardContent>
          {payments.length === 0 ? (
            <p className="text-muted-foreground text-center py-8">
              No payment history
            </p>
          ) : (
            <div className="space-y-4">
              {payments.map((payment) => (
                <div
                  key={payment.id}
                  className="flex items-center justify-between border-b pb-4 last:border-0"
                >
                  <div className="flex items-start gap-4">
                    <div className="mt-1">{getMethodIcon()}</div>
                    <div>
                      <p className="font-medium">
                        {payment.appointment.service.name}
                      </p>
                      <p className="text-sm text-muted-foreground">
                        Dr. {payment.appointment.dentist.name}
                      </p>
                      <p className="text-sm text-muted-foreground">
                        {new Date(
                          payment.appointment.date
                        ).toLocaleDateString()}{" "}
                        at {payment.appointment.timeSlot}
                      </p>
                      <div className="flex items-center gap-2 mt-1">
                        <p className="text-xs text-muted-foreground">
                          {payment.paidAt
                            ? `Paid on ${new Date(payment.paidAt).toLocaleDateString()}`
                            : `Created on ${new Date(payment.createdAt).toLocaleDateString()}`}
                        </p>
                        {payment.transactionId && (
                          <p className="text-xs text-muted-foreground">
                            • ID: {payment.transactionId}
                          </p>
                        )}
                      </div>
                    </div>
                  </div>
                  <div className="text-right space-y-2">
                    <p className="font-bold text-lg">
                      ₱{payment.amount.toFixed(2)}
                    </p>
                    {getStatusBadge(payment.status)}
                    {payment.status === "pending" && (
                      <Button size="sm" className="w-full mt-2">
                        Pay Now
                      </Button>
                    )}
                    {payment.status === "paid" && (
                      <Button
                        variant="outline"
                        size="sm"
                        className="w-full mt-2"
                      >
                        <Download className="h-3 w-3 mr-1" />
                        Receipt
                      </Button>
                    )}
                  </div>
                </div>
              ))}
            </div>
          )}
        </CardContent>
      </Card>
    </div>
  );
}