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

// Chart skeleton for revenue trends and order analytics
export function ChartSkeleton({ 
  title, 
  description, 
  icon: Icon,
  showStats = false 
}: { 
  title: string; 
  description: string; 
  icon: any;
  showStats?: boolean;
}) {
  return (
    <Card>
      <CardHeader>
        <CardTitle className="flex items-center gap-2">
          <Icon className="h-5 w-5" />
          {title}
        </CardTitle>
        <CardDescription>{description}</CardDescription>
      </CardHeader>
      <CardContent>
        <div className="space-y-6">
          {/* Chart area */}
          <div className="h-64 bg-muted/20 rounded-md animate-pulse" />
          
          {/* Summary stats if applicable */}
          {showStats && (
            <div className="grid grid-cols-3 gap-4 pt-4 border-t">
              {[...Array(3)].map((_, i) => (
                <div key={i} className="text-center space-y-2">
                  <Skeleton className="h-8 w-20 mx-auto" />
                  <Skeleton className="h-4 w-24 mx-auto" />
                </div>
              ))}
            </div>
          )}
        </div>
      </CardContent>
    </Card>
  );
}

// Table skeleton for product performance
export function TableSkeleton({ 
  title, 
  description, 
  icon: Icon,
  rows = 5,
  columns = 5
}: { 
  title: string; 
  description: string; 
  icon: any;
  rows?: number;
  columns?: number;
}) {
  return (
    <Card>
      <CardHeader>
        <CardTitle className="flex items-center gap-2">
          <Icon className="h-5 w-5" />
          {title}
        </CardTitle>
        <CardDescription>{description}</CardDescription>
      </CardHeader>
      <CardContent>
        <div className="space-y-4">
          {/* Table header */}
          <div className="grid gap-4" style={{ gridTemplateColumns: `repeat(${columns}, 1fr)` }}>
            {[...Array(columns)].map((_, i) => (
              <Skeleton key={i} className="h-4 w-full" />
            ))}
          </div>
          
          {/* Table rows */}
          {[...Array(rows)].map((_, rowIndex) => (
            <div key={rowIndex} className="grid gap-4" style={{ gridTemplateColumns: `repeat(${columns}, 1fr)` }}>
              {[...Array(columns)].map((_, colIndex) => (
                <div key={colIndex} className="flex items-center gap-3">
                  {colIndex === 0 && (
                    <Skeleton className="h-10 w-10 rounded" />
                  )}
                  <Skeleton className="h-4 flex-1" />
                </div>
              ))}
            </div>
          ))}
        </div>
      </CardContent>
    </Card>
  );
}

// Customer insights skeleton with segments
export function CustomerInsightsSkeleton({ 
  title, 
  description, 
  icon: Icon 
}: { 
  title: string; 
  description: string; 
  icon: any;
}) {
  return (
    <Card>
      <CardHeader>
        <CardTitle className="flex items-center gap-2">
          <Icon className="h-5 w-5" />
          {title}
        </CardTitle>
        <CardDescription>{description}</CardDescription>
      </CardHeader>
      <CardContent>
        <div className="space-y-6">
          {/* Customer segments */}
          <div className="grid grid-cols-2 md:grid-cols-4 gap-4">
            {[...Array(4)].map((_, i) => (
              <div key={i} className="text-center space-y-2">
                <Skeleton className="h-8 w-16 mx-auto" />
                <Skeleton className="h-4 w-20 mx-auto" />
              </div>
            ))}
          </div>
          
          {/* Top customers table */}
          <div className="space-y-4">
            <Skeleton className="h-6 w-32" />
            {[...Array(5)].map((_, i) => (
              <div key={i} className="flex items-center justify-between p-4 border rounded-lg">
                <div className="space-y-2">
                  <Skeleton className="h-4 w-24" />
                  <Skeleton className="h-3 w-16" />
                </div>
                <div className="text-right space-y-2">
                  <Skeleton className="h-4 w-16" />
                  <Skeleton className="h-3 w-12" />
                </div>
              </div>
            ))}
          </div>
        </div>
      </CardContent>
    </Card>
  );
}

// Metrics card skeleton
export function MetricsCardSkeleton() {
  return (
    <Card>
      <CardContent className="p-6">
        <div className="flex items-center justify-between">
          <div className="space-y-2">
            <Skeleton className="h-4 w-24" />
            <Skeleton className="h-8 w-20" />
          </div>
          <Skeleton className="h-8 w-8 rounded" />
        </div>
        <div className="mt-4 flex items-center gap-2">
          <Skeleton className="h-3 w-16" />
          <Skeleton className="h-3 w-20" />
        </div>
      </CardContent>
    </Card>
  );
}