import { useState } from 'react';
import { 
  Zap, 
  AlertTriangle, 
  Activity, 
  Plus, 
  Clock,
  ShieldCheck
} 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 { assetHealthheaders, assetHealthrows } from '@/constants/tabledata';

export default function AssetHealthPortal() {
  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-[12px] font-bold tracking-widest uppercase font-mono">
            <span className="text-teal-400">Apple One — HQ Tower</span>
            <span className="text-slate-600">•</span>
            <span className="text-slate-400">INTELLIGENCE</span>
            <span className="text-slate-600">•</span>
            <span className="text-slate-400">ASSET HEALTH</span>
          </div>
          <h1 className="text-2xl font-bold text-white tracking-tight mt-2">
            Asset health & reliability
          </h1>
          <p className="text-sm font-medium text-slate-400 mt-2 max-w-xl leading-relaxed">
            A live health index per asset from reliability signals — MTBF, MTTR and criticality drive condition-based PM instead of fixed calendars.
          </p>
        </div>

        {/* --- HEADER BUTTONS --- */}
        <div className="flex items-center gap-3 self-start md:mt-10">
          <Button className="bg-[#0b1727] hover:bg-slate-800/60 text-slate-200 border border-slate-800 text-xs px-4 py-2 rounded-lg flex items-center gap-2 font-semibold transition-colors">
            <Activity className="w-4 h-4 text-slate-300" />
            <span>Model insights</span>
          </Button>

          <Button className="bg-[#2dd4bf] hover:bg-teal-300 text-slate-950 font-bold text-xs px-4 py-2 rounded-lg flex items-center gap-2 transition-colors">
            <Plus className="w-4 h-4 stroke-[3]" />
            <span>Raise PM</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: Predicted failures */}
        <StatCard
          variant="icon"
          title="Fleet health index"
          value="69"
          icon={ShieldCheck}
          badgeText="weighted"
          badgeClassName="text-amber-400 lowercase font-mono"
          iconContainerClassName="bg-amber-950/40 border-amber-800/30 text-amber-400"
        />

        <StatCard
          variant="icon"
          title="Assets at risk"
          value="1"
          icon={AlertTriangle}
          badgeText="health < 58"
          badgeClassName="text-rose-400 lowercase font-mono"
          iconContainerClassName="bg-rose-950/40 border-rose-800/30 text-rose-400"
        />

        <StatCard
          variant="icon"
          title="Mean time between failures"
          value="204d"
          icon={Clock}
          badgeText="avg"
          badgeClassName="text-blue-400 lowercase font-mono"
          iconContainerClassName="bg-blue-950/50 border-blue-800/30 text-blue-400"
        />

        <StatCard
          variant="icon"
          title="Mean time to repair"
          value="6.3h"
          icon={Activity}
          badgeText="avg"
          badgeClassName="text-emerald-400 lowercase font-mono"
          iconContainerClassName="bg-emerald-950/40 border-emerald-800/30 text-emerald-400"
        />
      </div>

      {/* --- MAIN CONTENT GRID (TABLE + RIGHT SIDE CARDS) --- */}
      <div className="grid grid-cols-1 lg:grid-cols-3 gap-4">
        {/* Left Section: Asset Health Register Table Container */}
        <div className="lg:col-span-2 bg-[#0b1727] border 
        border-slate-800/80 rounded-xl p-4 flex flex-col justify-between">
          <div>
            <div className="flex items-center justify-between mb-4">
              <h2 className="text-base font-bold text-white tracking-tight">Asset health register</h2>
              <span className="text-xs font-mono text-slate-500 lowercase">condition-based</span>
            </div>
            <Table headers={assetHealthheaders} rows={assetHealthrows}/>
          </div>
        </div>

        {/* Right Section: Reliability & Condition Mix Side Panel */}
        <div className="flex flex-col gap-4">
          {/* Card 1: Reliability by group */}
          <div className="bg-[#0b1727] border border-slate-800/80 rounded-xl p-5">
            <h3 className="text-base font-bold text-white mb-6">Reliability by group</h3>
            <div className="space-y-4 text-sm font-medium">
              {/* Electrical */}
              <div className="flex items-center justify-between gap-4">
                <span className="text-slate-300 w-24">Electrical</span>
                <div className="flex-1 bg-slate-800/80 h-2 rounded-full overflow-hidden">
                  <div className="bg-amber-400 h-full rounded-full" style={{ width: '75%' }}></div>
                </div>
                <span className="text-amber-400 font-bold font-mono text-xs w-6 text-right">75</span>
              </div>

              {/* Plumbing */}
              <div className="flex items-center justify-between gap-4">
                <span className="text-slate-300 w-24">Plumbing</span>
                <div className="flex-1 bg-slate-800/80 h-2 rounded-full overflow-hidden">
                  <div className="bg-emerald-400 h-full rounded-full" style={{ width: '86%' }}></div>
                </div>
                <span className="text-emerald-400 font-bold font-mono text-xs w-6 text-right">86</span>
              </div>
            </div>
          </div>

          {/* Card 2: Condition mix */}
          <div className="bg-[#0b1727] border border-slate-800/80 rounded-xl p-5 ">
            <h3 className="text-base font-bold text-white mb-6">Condition mix</h3>
            <div className="space-y-4 text-sm font-medium">
              {/* Healthy */}
              <div className="flex items-center justify-between gap-4">
                <span className="text-slate-300 w-24">Healthy</span>
                <div className="flex-1 bg-slate-800/80 h-2 rounded-full overflow-hidden">
                  <div className="bg-emerald-400 h-full rounded-full" style={{ width: '50%' }}></div>
                </div>
                <span className="text-slate-300 font-bold font-mono text-xs w-6 text-right">4</span>
              </div>

              {/* Watch */}
              <div className="flex items-center justify-between gap-4">
                <span className="text-slate-300 w-24">Watch</span>
                <div className="flex-1 bg-slate-800/80 h-2 rounded-full overflow-hidden">
                  <div className="bg-amber-400 h-full rounded-full" style={{ width: '50%' }}></div>
                </div>
                <span className="text-slate-300 font-bold font-mono text-xs w-6 text-right">4</span>
              </div>

              {/* At risk */}
              <div className="flex items-center justify-between gap-4">
                <span className="text-slate-300 w-24">At risk</span>
                <div className="flex-1 bg-slate-800/80 h-2 rounded-full overflow-hidden">
                  <div className="bg-rose-500 h-full rounded-full" style={{ width: '0%' }}></div>
                </div>
                <span className="text-slate-300 font-bold font-mono text-xs w-6 text-right">0</span>
              </div>
            </div>
          </div>
        </div>
      </div>

      {/* --- INFO BANNER --- */}
      <div className="mt-5">
        <InfoBanner 
          boldText="How it works:" 
          normalText="reliability signals (runtime, faults, vibration, PPM history) roll into a 0–100 health index. Assets that drop below threshold auto-surface here and can raise a condition-based PM in one click — replacing fixed-calendar servicing on healthy assets."
        />
      </div>
    </div>
  );
}