import React from "react";
import { View, ScrollView, Pressable } from "react-native";
import { useLocalSearchParams, router, Stack } from "expo-router";
import { Text } from "@/components/ui/text";
import { Button } from "@/components/ui/button";
import { Card } from "@/components/ui/card";
import {
  FileText,
  Calendar,
  Share2,
  Download,
  ArrowLeft,
  Tag,
  CreditCard,
  Building2,
  ExternalLink,
} from "@/lib/icons";
import { MOCK_INVOICES } from "@/lib/mock-data";
import { ScreenWrapper } from "@/components/ScreenWrapper";
import { ShadowWrapper } from "@/components/ShadowWrapper";

const MOCK_ITEMS = [
  {
    description: "Marketing Landing Page Package",
    qty: 1,
    unitPrice: 1000,
    total: 1000,
  },
  {
    description: "Instagram Post Initial Design",
    qty: 4,
    unitPrice: 100,
    total: 400,
  },
];

export default function InvoiceDetailScreen() {
  const { id } = useLocalSearchParams<{ id: string }>();
  const invoice = MOCK_INVOICES.find((i) => i.id === id);

  return (
    <ScreenWrapper className="bg-background">
      <Stack.Screen options={{ headerShown: false }} />

      <View className="px-6 pt-4 flex-row justify-between items-center">
        <Pressable
          onPress={() => router.back()}
          className="h-10 w-10 rounded-[10px] bg-card items-center justify-center border border-border"
        >
          <ArrowLeft color="#0f172a" size={20} />
        </Pressable>
        <Text variant="h4" className="text-foreground font-semibold">
          Invoice Details
        </Text>
        <Pressable className="h-10 w-10 rounded-[10px] bg-card items-center justify-center border border-border">
          <ExternalLink className="text-foreground" color="#000" size={18} />
        </Pressable>
      </View>

      <ScrollView
        className="flex-1"
        contentContainerStyle={{ padding: 16, paddingBottom: 120 }}
        showsVerticalScrollIndicator={false}
      >
        {/* Status Hero Card */}
        <Card className="mb-4 overflow-hidden rounded-[6px] border-0 bg-primary">
          <View className="p-5">
            <View className="flex-row items-center justify-between mb-3">
              <View className="bg-white/20 p-1.5 rounded-[6px]">
                <FileText color="white" size={16} strokeWidth={2.5} />
              </View>
              <View
                className={`rounded-[6px] px-3 py-1 ${invoice?.status === "Paid" ? "bg-emerald-500/20" : "bg-white/15"}`}
              >
                <Text
                  className={`text-[10px] font-bold ${invoice?.status === "Paid" ? "text-emerald-400" : "text-white"}`}
                >
                  {invoice?.status || "Pending"}
                </Text>
              </View>
            </View>

            <Text variant="small" className="text-white/70 mb-0.5">
              Total Amount
            </Text>
            <Text variant="h3" className="text-white font-bold mb-3">
              ${invoice?.amount.toLocaleString() ?? "—"}
            </Text>

            <View className="flex-row items-center gap-3 border-t border-white/40 pt-3">
              <View className="flex-row items-center gap-1.5">
                <Calendar color="rgba(255,255,255,0.9)" size={12} />
                <Text className="text-white/90 text-xs font-semibold">
                  Due {invoice?.dueDate || "—"}
                </Text>
              </View>
              <View className="h-3 w-[1px] bg-white/60" />
              <Text className="text-white/90 text-xs font-semibold">
                #{invoice?.invoiceNumber || id}
              </Text>
            </View>
          </View>
        </Card>

        {/* Recipient & Category — inline info strip */}
        <Card className="bg-card rounded-[6px] mb-4">
          <View className="flex-row px-4 py-2">
            <View className="flex-1 flex-row items-center">
              <View className="flex-col">
                <Text className="text-foreground text-xs">Recipient</Text>
                <Text
                  variant="p"
                  className="text-foreground font-semibold"
                  numberOfLines={1}
                >
                  {invoice?.recipient || "—"}
                </Text>
              </View>
            </View>
            <View className="w-[1px] bg-border/70 mx-3" />
            <View className="flex-1 flex-row items-center">
              <View className="flex-col">
                <Text className="text-foreground text-xs">Category</Text>
                <Text
                  variant="p"
                  className="text-foreground font-semibold"
                  numberOfLines={1}
                >
                  Subscription
                </Text>
              </View>
            </View>
          </View>
        </Card>

        {/* Items / Billing Summary */}
        <Card className="mb-4 bg-card rounded-[6px]">
          <View className="p-4">
            <View className="flex-row items-center gap-2">
              <Text variant="small" className="">
                Billing Summary
              </Text>
            </View>

            {MOCK_ITEMS.map((item, i) => (
              <View
                key={i}
                className={`flex-row justify-between py-3 ${i < MOCK_ITEMS.length - 1 ? "border-b border-border/70" : ""}`}
              >
                <View className="flex-1 pr-4">
                  <Text
                    variant="p"
                    className="text-foreground font-semibold text-sm"
                  >
                    {item.description}
                  </Text>
                  <Text variant="muted" className="text-[10px] mt-0.5">
                    QTY: {item.qty} · ${item.unitPrice}/unit
                  </Text>
                </View>
                <Text variant="p" className="text-foreground font-bold text-sm">
                  ${item.total.toLocaleString()}
                </Text>
              </View>
            ))}

            <View className="mt-3 pt-3 flex-row justify-between items-center border-t border-border/70">
              <Text variant="muted" className="font-semibold text-sm">
                Total Balance
              </Text>
              <Text
                variant="h3"
                className="text-foreground font-semibold text-xl tracking-tight"
              >
                ${invoice?.amount.toLocaleString() || "0"}
              </Text>
            </View>
          </View>
        </Card>

        {/* Actions */}
        <View className="flex-row gap-3">
          <Button
            className=" flex-1 mb-4 h-10 rounded-[6px] bg-primary shadow-lg shadow-primary/30"
            onPress={() => {}}
          >
            <Share2 color="#ffffff" size={14} strokeWidth={2.5} />
            <Text className=" text-white text-xs font-semibold uppercase tracking-widest">
              Share
            </Text>
          </Button>
          <ShadowWrapper>
            <Button
              className=" flex-1 mb-4 h-10 rounded-[10px] bg-card"
              onPress={() => {}}
            >
              <Download color="#000" size={14} strokeWidth={2.5} />
              <Text className="text-black text-xs font-semibold uppercase tracking-widest">
                Download PDF
              </Text>
            </Button>
          </ShadowWrapper>
        </View>
      </ScrollView>
    </ScreenWrapper>
  );
}