import { Card, CardContent, CardHeader } from "@kandev/ui/card";
import { Skeleton } from "@kandev/ui/skeleton";

function OverviewCardsSkeleton() {
  return (
    <div className="grid gap-4 md:grid-cols-2 lg:grid-cols-4">
      {[...Array(4)].map((_, i) => (
        <Card key={i} className="rounded-sm">
          <CardHeader className="pb-2">
            <Skeleton className="h-4 w-24" />
          </CardHeader>
          <CardContent>
            <Skeleton className="h-9 w-16 mb-2" />
            <Skeleton className="h-4 w-32 mb-3" />
            <Skeleton className="h-1.5 w-full" />
          </CardContent>
        </Card>
      ))}
    </div>
  );
}

function ChartsSkeleton() {
  return (
    <div className="grid gap-4 lg:grid-cols-3">
      <Card className="rounded-sm lg:col-span-2">
        <CardHeader className="pb-2">
          <Skeleton className="h-4 w-48" />
        </CardHeader>
        <CardContent>
          <div className="space-y-3">
            <div className="flex gap-2">
              {[...Array(3)].map((_, i) => (
                <Skeleton key={i} className="h-7 w-16" />
              ))}
            </div>
            <Skeleton className="h-32 w-full" />
            <div className="flex justify-between">
              <Skeleton className="h-3 w-16" />
              <Skeleton className="h-3 w-16" />
            </div>
          </div>
        </CardContent>
      </Card>
      <Card className="rounded-sm">
        <CardHeader className="pb-2">
          <Skeleton className="h-4 w-32" />
        </CardHeader>
        <CardContent>
          <div className="space-y-3">
            {[...Array(3)].map((_, i) => (
              <div key={i} className="flex justify-between">
                <Skeleton className="h-4 w-24" />
                <Skeleton className="h-4 w-16" />
              </div>
            ))}
          </div>
        </CardContent>
      </Card>
    </div>
  );
}

function ActivitySkeleton() {
  return (
    <div className="grid gap-4 lg:grid-cols-2">
      <Card className="rounded-sm">
        <CardHeader className="pb-2">
          <Skeleton className="h-4 w-32" />
        </CardHeader>
        <CardContent>
          <div className="space-y-2">
            <Skeleton className="h-4 w-48 mb-2" />
            <Skeleton className="h-24 w-full" />
            <div className="flex items-center gap-2 mt-2">
              <Skeleton className="h-3 w-8" />
              {[...Array(5)].map((_, i) => (
                <Skeleton key={i} className="h-2 w-2" />
              ))}
              <Skeleton className="h-3 w-8" />
            </div>
          </div>
        </CardContent>
      </Card>
      <Card className="rounded-sm">
        <CardHeader className="pb-2">
          <Skeleton className="h-4 w-24" />
        </CardHeader>
        <CardContent>
          <div className="space-y-3">
            {[...Array(3)].map((_, i) => (
              <div key={i}>
                <div className="flex justify-between mb-1">
                  <Skeleton className="h-4 w-32" />
                  <Skeleton className="h-4 w-8" />
                </div>
                <Skeleton className="h-1.5 w-full" />
              </div>
            ))}
          </div>
        </CardContent>
      </Card>
    </div>
  );
}

function RepositoriesSkeleton() {
  return (
    <Card className="rounded-sm">
      <CardHeader className="pb-2">
        <Skeleton className="h-4 w-40" />
      </CardHeader>
      <CardContent>
        <div className="grid gap-3 md:grid-cols-2">
          {[...Array(4)].map((_, i) => (
            <div key={i} className="rounded-sm border bg-muted/20 p-3">
              <div className="flex justify-between mb-2">
                <Skeleton className="h-4 w-32" />
                <Skeleton className="h-4 w-16" />
              </div>
              <div className="flex gap-3 mb-3">
                <Skeleton className="h-3 w-16" />
                <Skeleton className="h-3 w-20" />
                <Skeleton className="h-3 w-16" />
              </div>
              <Skeleton className="h-3 w-full mb-2" />
              <Skeleton className="h-3 w-full" />
            </div>
          ))}
        </div>
      </CardContent>
    </Card>
  );
}

export default function StatsLoading() {
  return (
    <div className="h-screen w-full flex flex-col bg-background">
      <header className="flex items-center gap-3 p-4 pb-3 shrink-0">
        <Skeleton className="h-8 w-16" />
        <div className="flex items-center gap-2">
          <Skeleton className="h-4 w-32" />
          <Skeleton className="h-4 w-4" />
          <Skeleton className="h-4 w-48" />
        </div>
        <div className="ml-auto flex items-center gap-2">
          <Skeleton className="h-7 w-48" />
          <Skeleton className="h-7 w-24" />
        </div>
      </header>
      <div className="flex-1 overflow-auto">
        <div className="max-w-7xl mx-auto p-6">
          <div className="space-y-5">
            <OverviewCardsSkeleton />
            <Skeleton className="h-4 w-32" />
            <ChartsSkeleton />
            <ActivitySkeleton />
            <RepositoriesSkeleton />
          </div>
        </div>
      </div>
    </div>
  );
}