import { useQuery } from "@tanstack/react-query";
import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
import { Badge } from "@/components/ui/badge";
import { Button } from "@/components/ui/button";
import { RefreshCw, AlertCircle, Radar, Download } from "lucide-react";
import { SignatureCategories } from "@/components/SignatureCategories";
import { SignatureCategory, useSignatureCategories } from "@/hooks/useSignatureCategories";
import { toast } from "@/hooks/use-toast";
import { CleanModeToggle } from "@/components/CleanModeToggle";
import pb from "@/lib/pocketbase";
import { SigviewRecord as Signature } from "@/lib/pbtypes";
import { useEffect } from "react";

interface SystemTrackerProps {
  system: string;
  cleanMode: boolean;
  onCleanModeToggle: (enabled: boolean) => void;
  onDelete?: (signatureId: string) => Promise<void>;
}

export const SystemTracker = ({ system, cleanMode, onCleanModeToggle, onDelete }: SystemTrackerProps) => {
  const {
    data: signaturesData,
    refetch: refetchSignatures,
    isLoading: signaturesLoading,
    error: signaturesError
  } = useQuery({
    queryKey: ['signatures', system],
    queryFn: async () => {
      if (!system) return null;
      const signatures = await pb.collection('sigview').getFullList<Signature>({ batch: 1000, filter: `(system='${system}')` });
      const sigMap = new Map<string, Signature>();
      signatures.forEach(sig => {
        sigMap.set(sig.identifier, sig);
      });
      return sigMap;
    },
    enabled: !!system,
    refetchInterval: 5000, // Poll every 5 seconds
  });

  const handleRefresh = () => {
    refetchSignatures();
    toast({
      title: "Refreshing Data",
      description: "Updating signature information...",
    });
  };

  const handleExport = () => {
    const exportText = Object.values(signaturesData || {})
      .map(sig => [
        sig.identifier,
        '', // Empty field (part[1] in parseSignature)
        sig.type || '',
        sig.signame || '',
        sig.scanned || ''
      ].join('\t'))
      .join('\n');

    navigator.clipboard.writeText(exportText).then(() => {
      toast({
        title: "Exported",
        description: "Signatures copied to clipboard in EVE format",
      });
    }).catch(() => {
      toast({
        title: "Export Failed",
        description: "Failed to copy to clipboard",
        variant: "destructive"
      });
    });
  };

  const isLoading = signaturesLoading;
  const { categories, toggleCategoryVisibility } = useSignatureCategories(signaturesData || new Map());

  return (
    <div className="space-y-6">
      {/* System Status Card */}
      <Card className="bg-slate-800/50 border-slate-700">
        <CardHeader className="flex flex-row items-center justify-between space-y-0 pb-4">
          <CardTitle className="text-xl text-white flex items-center gap-2">
            <Radar className="h-5 w-5 text-blue-400" />
            {system}
            <Badge variant="outline" className="ml-2 bg-blue-900/20 text-blue-400 border-blue-600">
              Polling
            </Badge>
          </CardTitle>
          <div className="flex items-center gap-2">
            <CleanModeToggle cleanMode={cleanMode} onToggle={onCleanModeToggle} />
            <Badge variant="outline" className="bg-slate-700/50 text-slate-300 border-slate-600">
              Total: {signaturesData?.size}
            </Badge>
            <Button
              onClick={handleExport}
              variant="ghost"
              size="icon"
              className="h-6 w-6 text-slate-400 hover:text-slate-200 hover:bg-slate-700/50"
            >
              <Download className="h-3 w-3" />
            </Button>
            <Button
              onClick={handleRefresh}
              disabled={isLoading}
              variant="ghost"
              size="icon"
              className="h-6 w-6 text-slate-400 hover:text-slate-200 hover:bg-slate-700/50"
            >
              <RefreshCw className={`h-3 w-3 ${isLoading ? 'animate-spin' : ''}`} />
            </Button>
          </div>
        </CardHeader>
      </Card>

      {/* Error Display */}
      {signaturesError && (
        <Card className="bg-red-900/20 border-red-700">
          <CardContent className="pt-6">
            <div className="flex items-center gap-2 text-red-400">
              <AlertCircle className="h-5 w-5" />
              <span>Error loading signatures: {signaturesError.message}</span>
            </div>
          </CardContent>
        </Card>
      )}

      {/* Loading State */}
      {signaturesLoading && system && (
        <Card className="bg-slate-800/30 border-slate-700">
          <CardContent className="pt-6">
            <div className="space-y-4">
              {[...Array(1)].map((_, i) => (
                <div key={i} className="flex items-center gap-4 p-4 animate-pulse">
                  <div className="h-6 bg-slate-700 rounded w-24"></div>
                  <div className="h-4 bg-slate-600 rounded flex-1"></div>
                  <div className="h-4 bg-slate-700 rounded w-16"></div>
                </div>
              ))}
            </div>
          </CardContent>
        </Card>
      )}

      {/* Signature Categories */}
      {system && !signaturesLoading && (
        <SignatureCategories
          categories={categories}
          onToggleCategory={toggleCategoryVisibility}
          onDelete={onDelete}
        />
      )}
    </div>
  );
};
