import { useState } from 'react';
import { 
  Grid2X2, 
  AlertTriangle, 
  Sun, 
  Disc, 
  Smartphone, 
  FileText 
} from "lucide-react";
import Button from "@/components/common/button";
import StatCard from "@/components/common/dashStatCard";
import InfoBanner from "@/components/common/infoBanner";
import Table from '@/components/common/dataTable';
import { contractheaders, contractrows, devicefleetheaders, devicefleetrows } from '@/constants/tabledata';

export default function DeviceFleetPortal() {
  return (
    <div className="my-15 text-slate-100 font-sans">
      {/* --- HEADER SECTION --- */}
      <div className="flex flex-col md:flex-row md:items-start md:justify-between gap-4 mb-6">
        <div>
          <div className="flex items-center gap-2 text-[10px] font-bold tracking-widest text-emerald-400 uppercase font-mono">
            <span>APPLE ONE — HQ TOWER</span>
            <span className="text-slate-500">•</span>
            <span className="text-slate-500">IOT</span>
            <span className="text-slate-500">•</span>
            <span className="text-slate-500">DEVICE FLEET</span>
          </div>
          <h1 className="text-2xl font-bold text-white tracking-tight mt-1">
            Gateways, controllers & sensors
          </h1>
          <p className="text-sm font-medium text-slate-400 mt-2 max-w-xl leading-relaxed">
            The connected-device registry for Apple One — protocol, firmware and heartbeat for every device.
          </p>
        </div>

        {/* --- HEADER BUTTONS --- */}
        <div className="flex items-center gap-3 self-start md:mt-4">
          <Button className="bg-[#0e1c2e] hover:bg-slate-800 text-slate-200 border border-[#162942] text-xs px-4 py-2 rounded-lg flex items-center gap-2 font-semibold transition-colors">
            <Smartphone className="w-4 h-4 text-slate-400" />
            <span>Pair device</span>
          </Button>

          <Button className="bg-[#10b981] hover:bg-emerald-400 text-slate-950 font-bold text-xs px-4 py-2 rounded-lg flex items-center gap-2 transition-colors shadow-lg">
            <Sun className="w-4 h-4 text-slate-950 stroke-[2.5]" />
            <span>Update firmware (1)</span>
          </Button>
        </div>
      </div>

      {/* --- STAT CARDS --- */}
      <div className="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-4 gap-4 mb-6">
        {/* Card 1: Online */}
        <StatCard
          variant="icon"
          title="Online"
          value="5"
          icon={Grid2X2}
          badgeText="heartbeat < 60 s"
          badgeClassName="text-emerald-400 lowercase font-mono"
          iconContainerClassName="bg-emerald-950/60 border-emerald-800/40 text-emerald-400"
        />

        {/* Card 2: Offline */}
        <StatCard
          variant="icon"
          title="Offline"
          value="1"
          icon={AlertTriangle}
          badgeText="investigate"
          badgeClassName="text-rose-400 lowercase font-mono"
          iconContainerClassName="bg-rose-950/50 border-rose-800/30 text-rose-400"
        />

        {/* Card 3: Firmware pending */}
        <StatCard
          variant="icon"
          title="Firmware pending"
          value="1"
          icon={Sun}
          badgeText="staged rollout"
          badgeClassName="text-amber-400 lowercase font-mono"
          iconContainerClassName="bg-amber-950/50 border-amber-800/30 text-amber-400"
        />

        {/* Card 4: Protocols */}
        <StatCard
          variant="icon"
          title="Protocols"
          value="4"
          icon={Disc}
          badgeText="BACnet • Modbus • MQTT • NB-IoT"
          badgeClassName="text-slate-400 lowercase font-mono"
          iconContainerClassName="bg-blue-950/60 border-blue-800/40 text-blue-400"
        />
      </div>

      <Table headers={devicefleetheaders} rows={devicefleetrows}/>

      <div className="mb-10 mt-10">
        <InfoBanner 
          boldText="Device security is centrally managed:  " 
          normalText="registration, trust and firmware policy live in Administration → Security — end users cannot change them." 
        />
      </div>
    </div>
  );
}