import React, { useState, useEffect } from "react";
import logo from './logo.png';
import { Card, Title, Text, AreaChart } from "@tremor/react";
import {
  ShoppingCart,
  Receipt,
  PackageSearch,
  Truck,
  CreditCard,
  Boxes,
  TrendingUp,
  Coins,
  LineChart,
  DollarSign,
  Newspaper,
} from "lucide-react";

function SplashScreen() {
  return (
    <div className="fixed inset-0 flex items-center justify-center bg-white dark:bg-gray-900 z-50">
      <div className="animate-splash opacity-0 scale-75">
        <img src={logo} alt="Logo" className="h-32 object-contain" />
      </div>
    </div>
  );
}

/* --------------------------
   Communication Tryton
-------------------------- */

function openInTryton(model, res_id, view_mode = "tree", domain) {
  window.parent.postMessage(
    {
      type: "open_tab",
      payload: { model, res_id, view_mode, domain },
    },
    "*"
  );
}

/* --------------------------
   Données
-------------------------- */

const params = new URLSearchParams(window.location.search);
const defaultSaleId = params.get("sale_id") || 249;
const defaultPnlAmount = params.get("pnl_amount");
const exposure = params.get("exposure");
const topay = params.get("topay");
const toreceive = params.get("toreceive");

const data = [
  { date: "2025-01-01", value: 12 },
  { date: "2025-01-02", value: 14 },
  { date: "2025-01-03", value: 10 },
  { date: "2025-01-04", value: 18 },
  { date: "2025-01-05", value: 22 },
];

const statusData = [
  { status: "Draft", count: 10, color: "bg-teal-500" },
  { status: "Confirmed", count: 7, color: "bg-cyan-500" },
  { status: "Shipped", count: 4, color: "bg-blue-500" },
];

const kpis = [
  {
    title: "PNL",
    value: defaultPnlAmount,
    trend: "+12% vs last month",
    icon: TrendingUp,
    action: () => openInTryton("pnl.bi", [1], "form")
  },
  {
    title: "Exposure",
    value: exposure,
    trend: "+8% this month",
    icon: Coins,
    action: () => openInTryton("open.position.report", undefined, "tree")
  },
  {
    title: "Amount to pay",
    value: topay,
    trend: "+5% this month",
    icon: LineChart,
    action: () => openInTryton("account.invoice", undefined, "tree")
  },
  {
    title: "Amount to receive",
    value: toreceive,
    trend: "+3% this month",
    icon: DollarSign,
    action: () => openInTryton("account.invoice", undefined, "tree")
  },
];

const news = [
  {
    type: "Forex",
    label: "EUR/USD: 1.1400",
    trend: "+0.88%",
    color: "#1E3A8A", // bleu foncé
    date: "30-11-2025",
    icon: TrendingUp, // icône tendance boursière
  },
  {
    type: "Logistic",
    label: "INTHIRA NAREE loaded",
    date: "08-10-2025",
    color: "#1E3A8A",
    icon: Newspaper,
  },
];

const cards = [
  {
    id: "purchases_not_confirmed",
    title: "Purchases Not Confirmed",
    value: 12,
    trend: "+8% this week",
    icon: ShoppingCart,
  },
  {
    id: "sales_pending",
    title: "Sales Pending",
    value: 7,
    trend: "+3% this week",
    icon: Receipt,
  },
  {
    id: "invoices_unpaid",
    title: "Invoices Unpaid",
    value: 15,
    trend: "-2% this week",
    icon: CreditCard,
  },
  {
    id: "payments_to_validate",
    title: "Payments To Validate",
    value: 4,
    trend: "+12% this week",
    icon: PackageSearch,
  },
  {
    id: "lots_to_produce",
    title: "Lots",
    value: 9,
    trend: "+5% this week",
    icon: Boxes,
  },
  {
    id: "shipments_pending",
    title: "Shipments Pending",
    value: 6,
    trend: "-1% this week",
    icon: Truck,
  },
];

/* --------------------------
   Dashboard Component
-------------------------- */

export default function App() {
  const [loading, setLoading] = useState(true);

  useEffect(() => {
    // durée du splash
    const timer = setTimeout(() => setLoading(false), 1500);
    return () => clearTimeout(timer);
  }, []);

  if (loading) return <SplashScreen />;

  const saleId = defaultSaleId;
  const total = statusData.reduce((sum, item) => sum + item.count, 0);

  return (
    <div className="flex min-h-screen bg-gray-50 dark:bg-gray-900 p-6">
      <main className="flex-1">

        {/* KPIs en tête */}
        <div className="grid grid-cols-2 md:grid-cols-4 gap-4 mb-6">
          {kpis.map((kpi) => {
            const Icon = kpi.icon;
            return (
              <Card
                key={kpi.title}
                onClick={kpi.action}
                className="p-4 flex flex-col gap-2 shadow-md rounded-xl bg-white dark:bg-gray-800 border border-gray-200 dark:border-gray-700"
              >
                <div className="flex justify-between items-center">
                  <Title className="text-sm">{kpi.title}</Title>
                  <Icon className="w-6 h-6" />
                </div>
                <Text className="text-2xl font-bold">{kpi.value}</Text>
                <Text className="text-xs text-gray-500">{kpi.trend}</Text>
              </Card>
            );
          })}
        </div>

        <div className="grid grid-cols-2 md:grid-cols-3 lg:grid-cols-4 gap-4">

          {/* Card Last News (taille standard card) */}
          <Card className="p-4 rounded-xl border border-gray-200 dark:border-gray-700 shadow-md bg-white dark:bg-gray-800 hover:shadow-lg transition">
            <Title className="text-base mb-4">Last News</Title>

            <div className="space-y-3 text-sm">
              {news.map((n, idx) => {
                const Icon = n.icon;
                return (
                  <div
                    key={idx}
                    className="flex justify-between items-center p-2 rounded hover:bg-gray-100 dark:hover:bg-gray-700 cursor-pointer"
                  >
                    <div>
                      <div className="flex items-center gap-2">
                        <Icon className="w-4 h-4" />
                        <span className="font-semibold">{n.type}</span>
                      </div>
                      <div className="ml-6">
                        <span style={{ color: n.color }}>{n.label}</span>
                        {n.trend && (
                          <span className="ml-2 text-green-600">{n.trend}</span>
                        )}
                      </div>
                    </div>
                    <span className="text-gray-500 text-xs">{n.date}</span>
                  </div>
                );
              })}
            </div>
          </Card>

          {/* Status Distribution */}
          <Card className="p-4 rounded-xl border border-gray-200 dark:border-gray-700 shadow-md bg-white dark:bg-gray-800 hover:shadow-lg transition">
            <Title className="text-base mb-4">Status Distribution</Title>

            <Text className="text-3xl font-bold mb-1">{total}</Text>
            <Text className="text-xs text-gray-500 mb-4">Across all statuses</Text>

            <div className="w-full h-1 bg-gray-200 dark:bg-gray-600 mb-4"></div>

            <div className="flex w-full h-3 rounded overflow-hidden mb-4 bg-gray-200 dark:bg-gray-600">
              {statusData.map((item, i) => (
                <div
                  key={i}
                  className={`${item.color} h-3`}
                  style={{
                    width: `${(item.count / total) * 100}%`,
                    marginRight: i < statusData.length - 1 ? "2px" : "0",
                  }}
                ></div>
              ))}
            </div>

            <div className="space-y-2 text-xs">
              {statusData.map((item) => (
                <div
                  key={item.status}
                  className="flex items-center gap-2 cursor-pointer p-1 rounded hover:bg-gray-100 dark:hover:bg-gray-700"
                >
                  <span className={`w-3 h-3 rounded ${item.color}`}></span>
                  <span className="flex-1">{item.status}</span>
                  <span className="text-gray-500">
                    ({item.count} / {((item.count / total) * 100).toFixed(1)}%)
                  </span>
                </div>
              ))}
            </div>
          </Card>

          {/* Cards KPI */}
          {cards.map((card) => {
            const Icon = card.icon;
            return (
              <Card
                key={card.id}
                className="p-4 rounded-xl border border-gray-200 dark:border-gray-700 shadow-md bg-white dark:bg-gray-800 hover:shadow-lg transition"
              >
                <div className="flex justify-between items-center mb-4">
                  <Title className="text-base">{card.title}</Title>
                  <Icon className="w-6 h-6" />
                </div>

                <Text className="text-3xl font-bold mb-1">{card.value}</Text>
                <Text className="text-xs text-gray-500 mb-4">{card.trend}</Text>

                <div className="w-full h-1 bg-gray-200 dark:bg-gray-600 mb-4"></div>

                <AreaChart
                  data={data}
                  index="date"
                  categories={["value"]}
                  colors={["teal-300"]}
                  className="h-16"
                  showXAxis={false}
                  showYAxis={false}
                  showGridLines={false}
                  showLegend={false}
                  curve="monotone"
                />

                <button className="mt-4 text-xs text-teal-600 underline">
                  View details
                </button>
              </Card>
            );
          })}
        </div>
      </main>
    </div>
  );
}