import {
  Activity,
  AlertTriangle,
  BedDouble,
  CheckCircle2,
  Clock3,
  HeartPulse,
  ShieldAlert,
  Users,
} from "lucide-react";
import type { LucideIcon } from "lucide-react";

import { Badge } from "@/components/ui/badge";
import { Button } from "@/components/ui/button";
import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "@/components/ui/card";
import { Table } from "@/components/ui/table";

type Metric = {
  label: string;
  value: string;
  trend: string;
  icon: LucideIcon;
};

const metrics: Metric[] = [
  { label: "在院", value: "126", trend: "+6 本周", icon: Users },
  { label: "床位", value: "82%", trend: "28 空闲", icon: BedDouble },
  { label: "任务", value: "184", trend: "142 完成", icon: CheckCircle2 },
  { label: "异常", value: "9", trend: "3 待复核", icon: HeartPulse },
];

const taskRows = [
  { name: "晨间生命体征记录", owner: "护理一组", status: "进行中", due: "09:30" },
  { name: "二楼失能老人巡检", owner: "护理二组", status: "待执行", due: "10:00" },
  { name: "高血压老人复测", owner: "医护组", status: "需复核", due: "10:30" },
  { name: "晚间护理计划生成", owner: "护理主管", status: "待派发", due: "16:00" },
];

const alerts = [
  { label: "任务逾期", count: "4", tone: "warning" },
  { label: "设备故障", count: "2", tone: "danger" },
  { label: "应急处理中", count: "1", tone: "danger" },
  { label: "未读通知", count: "18", tone: "success" },
] as const;

export function DashboardHome(): React.ReactElement {
  return (
    <div className="mx-auto flex w-full max-w-7xl flex-col gap-6">
      <section className="grid gap-5 border-b pb-5 lg:grid-cols-[1.15fr_0.85fr]">
        <div className="flex flex-col justify-end gap-4">
          <Badge variant="success">一期</Badge>
          <div>
            <h1 className="text-3xl font-semibold tracking-normal md:text-4xl">运营看板</h1>
            <p className="mt-2 text-sm text-muted-foreground">照护、床位、预警一屏处理。</p>
          </div>
          <div className="flex flex-wrap gap-2">
            <Button>
              <Users className="size-4" aria-hidden="true" />
              老人建档
            </Button>
            <Button variant="outline">
              <ShieldAlert className="size-4" aria-hidden="true" />
              处理应急事件
            </Button>
          </div>
        </div>

        <div className="grid gap-3 rounded-lg border bg-white/72 p-4 shadow-sm">
          <div className="flex items-center justify-between">
            <div>
              <p className="text-sm font-medium">今日闭环</p>
            </div>
            <Activity className="size-5 text-primary" aria-hidden="true" />
          </div>
          <div className="space-y-3">
            {["档案", "床位", "健康", "护理", "应急"].map((item, index) => (
              <div key={item} className="flex items-center gap-3">
                <span className="w-9 text-xs font-medium text-muted-foreground">{item}</span>
                <div className="h-2 flex-1 rounded-full bg-muted">
                  <div
                    className="h-2 rounded-full bg-primary"
                    style={{ width: `${88 - index * 9}%` }}
                  />
                </div>
                <span className="w-14 text-right text-xs text-muted-foreground">
                  {88 - index * 9}%
                </span>
              </div>
            ))}
          </div>
        </div>
      </section>

      <section className="grid gap-4 md:grid-cols-2 xl:grid-cols-4">
        {metrics.map((metric) => (
          <Card key={metric.label}>
            <CardHeader className="flex flex-row items-center justify-between space-y-0">
              <CardDescription>{metric.label}</CardDescription>
              <metric.icon className="size-4 text-primary" aria-hidden="true" />
            </CardHeader>
            <CardContent>
              <CardTitle className="text-3xl">{metric.value}</CardTitle>
              <p className="mt-2 text-xs text-muted-foreground">{metric.trend}</p>
            </CardContent>
          </Card>
        ))}
      </section>

      <section className="grid gap-4 xl:grid-cols-[1.25fr_0.75fr]">
        <Card>
          <CardHeader>
            <CardTitle>今日护理任务</CardTitle>
          </CardHeader>
          <CardContent>
            <div className="overflow-hidden rounded-md border">
              <Table className="w-full text-sm">
                <Table.Header className="bg-secondary text-left text-xs text-muted-foreground">
                  <Table.Row>
                    <Table.Head className="px-4 py-3 font-medium">任务</Table.Head>
                    <Table.Head className="px-4 py-3 font-medium">负责</Table.Head>
                    <Table.Head className="px-4 py-3 font-medium">状态</Table.Head>
                    <Table.Head className="px-4 py-3 text-right font-medium">截止</Table.Head>
                  </Table.Row>
                </Table.Header>
                <Table.Body className="divide-y bg-card">
                  {taskRows.map((task) => (
                    <Table.Row key={task.name}>
                      <Table.Cell className="px-4 py-3 font-medium">{task.name}</Table.Cell>
                      <Table.Cell className="px-4 py-3 text-muted-foreground">{task.owner}</Table.Cell>
                      <Table.Cell className="px-4 py-3">
                        <Badge variant={task.status === "需复核" ? "warning" : "secondary"}>
                          {task.status}
                        </Badge>
                      </Table.Cell>
                      <Table.Cell className="px-4 py-3 text-right text-muted-foreground">{task.due}</Table.Cell>
                    </Table.Row>
                  ))}
                </Table.Body>
              </Table>
            </div>
          </CardContent>
        </Card>

        <Card>
          <CardHeader>
            <CardTitle>预警与工单</CardTitle>
          </CardHeader>
          <CardContent className="space-y-3">
            {alerts.map((alert) => (
              <div key={alert.label} className="flex items-center justify-between rounded-md border p-3">
                <div className="flex items-center gap-3">
                  {alert.tone === "danger" ? (
                    <AlertTriangle className="size-4 text-red-600" aria-hidden="true" />
                  ) : (
                    <Clock3 className="size-4 text-amber-600" aria-hidden="true" />
                  )}
                  <span className="text-sm font-medium">{alert.label}</span>
                </div>
                <Badge variant={alert.tone}>{alert.count}</Badge>
              </div>
            ))}
          </CardContent>
        </Card>
      </section>
    </div>
  );
}