import { useState, useEffect } from "react";
import { useNavigate } from "react-router-dom";
import Layout from "@/components/Layout";
import { Button } from "@/components/ui/button";
import { useAuth } from "@/contexts/AuthContext";
import { supabase } from "@/lib/supabase";
import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "@/components/ui/card";
import { Badge } from "@/components/ui/badge";
import { Tabs, TabsContent, TabsList, TabsTrigger } from "@/components/ui/tabs";
import LoadingScreen from "@/components/LoadingScreen";
import { Lightbulb, FileText, Zap, Lock, ExternalLink, ArrowRight, AlertCircle, Send } from "lucide-react";
import { ResearchWidget } from "@/components/ResearchWidget";

const API_BASE = import.meta.env.VITE_API_BASE || "";

export default function LabsDashboard() {
  const navigate = useNavigate();
  const { user, loading: authLoading } = useAuth();
  const [activeTab, setActiveTab] = useState("overview");
  const [researchTracks, setResearchTracks] = useState<any[]>([]);
  const [bounties, setBounties] = useState<any[]>([]);
  const [publications, setPublications] = useState<any[]>([]);
  const [ipPortfolio, setIpPortfolio] = useState<any>(null);
  const [loading, setLoading] = useState(true);
  const [isAdmin, setIsAdmin] = useState(false);

  useEffect(() => {
    if (!authLoading && user) {
      loadDashboardData();
    }
  }, [user, authLoading]);

  const loadDashboardData = async () => {
    try {
      setLoading(true);
      const { data: { session } } = await supabase.auth.getSession();
      const token = session?.access_token;
      if (!token) throw new Error("No auth token");

      const tracksRes = await fetch(`${API_BASE}/api/labs/research-tracks`, {
        headers: { Authorization: `Bearer ${token}` },
      });
      if (tracksRes.ok) setResearchTracks(await tracksRes.json());

      const bountiesRes = await fetch(`${API_BASE}/api/labs/bounties`, {
        headers: { Authorization: `Bearer ${token}` },
      });
      if (bountiesRes.ok) setBounties(await bountiesRes.json());

      const pubRes = await fetch(`${API_BASE}/api/labs/publications`, {
        headers: { Authorization: `Bearer ${token}` },
      });
      if (pubRes.ok) setPublications(await pubRes.json());

      const ipRes = await fetch(`${API_BASE}/api/labs/ip-portfolio`, {
        headers: { Authorization: `Bearer ${token}` },
      });
      if (ipRes.ok) {
        const data = await ipRes.json();
        setIpPortfolio(data);
        setIsAdmin(data?.is_admin || false);
      }
    } catch (error) {
      console.error("Failed to load LABS data", error);
    } finally {
      setLoading(false);
    }
  };

  if (authLoading || loading) {
    return <LoadingScreen message="Loading LABS..." />;
  }

  if (!user) {
    return (
      <Layout>
        <div className="min-h-screen bg-gradient-to-b from-black via-amber-950/30 to-black flex items-center justify-center px-4">
          <div className="max-w-md text-center space-y-6">
            <h1 className="text-4xl font-bold bg-gradient-to-r from-amber-300 to-yellow-300 bg-clip-text text-transparent">
              Research LABS
            </h1>
            <p className="text-gray-400">Discover cutting-edge R&D</p>
            <Button
              onClick={() => navigate("/login")}
              className="w-full bg-gradient-to-r from-amber-600 to-yellow-600 hover:from-amber-700 hover:to-yellow-700 text-lg py-6"
            >
              Sign In
            </Button>
          </div>
        </div>
      </Layout>
    );
  }

  return (
    <Layout>
      <div className="min-h-screen bg-gradient-to-b from-black via-amber-950/20 to-black py-8">
        <div className="container mx-auto px-4 max-w-7xl space-y-8">
          {/* Header */}
          <div className="space-y-4 animate-slide-down">
            <h1 className="text-5xl md:text-6xl font-bold bg-gradient-to-r from-amber-300 to-yellow-300 bg-clip-text text-transparent">
              Research LABS
            </h1>
            <p className="text-gray-400 text-lg">R&D Workshop | Blueprint Technical</p>
          </div>

          {/* Tabs */}
          <Tabs value={activeTab} onValueChange={setActiveTab} className="w-full">
            <TabsList className="grid w-full grid-cols-4 bg-amber-950/30 border border-amber-500/20 p-1">
              <TabsTrigger value="overview">Overview</TabsTrigger>
              <TabsTrigger value="tracks">Tracks</TabsTrigger>
              <TabsTrigger value="bounties">Bounties</TabsTrigger>
              <TabsTrigger value="pubs">Publications</TabsTrigger>
            </TabsList>

            {/* Overview Tab */}
            <TabsContent value="overview" className="space-y-6 animate-fade-in">
              <div className="grid grid-cols-1 md:grid-cols-3 gap-4">
                <Card className="bg-gradient-to-br from-amber-950/40 to-amber-900/20 border-amber-500/20">
                  <CardContent className="p-6 space-y-2">
                    <p className="text-sm text-gray-400">Active Tracks</p>
                    <p className="text-3xl font-bold text-white">{researchTracks.length}</p>
                  </CardContent>
                </Card>
                <Card className="bg-gradient-to-br from-yellow-950/40 to-yellow-900/20 border-yellow-500/20">
                  <CardContent className="p-6 space-y-2">
                    <p className="text-sm text-gray-400">Available Bounties</p>
                    <p className="text-3xl font-bold text-white">{bounties.length}</p>
                  </CardContent>
                </Card>
                <Card className="bg-gradient-to-br from-orange-950/40 to-orange-900/20 border-orange-500/20">
                  <CardContent className="p-6 space-y-2">
                    <p className="text-sm text-gray-400">Publications</p>
                    <p className="text-3xl font-bold text-white">{publications.length}</p>
                  </CardContent>
                </Card>
              </div>

              {/* Recent Publications */}
              {publications.length > 0 && (
                <Card className="bg-gradient-to-br from-amber-950/40 to-amber-900/20 border-amber-500/20">
                  <CardHeader>
                    <CardTitle>Recent Publications</CardTitle>
                  </CardHeader>
                  <CardContent className="space-y-3">
                    {publications.slice(0, 3).map((pub: any) => (
                      <a key={pub.id} href={pub.url} target="_blank" rel="noopener noreferrer" className="p-4 bg-black/30 rounded-lg border border-amber-500/10 hover:border-amber-500/30 transition block">
                        <div className="flex items-start gap-3">
                          <FileText className="h-5 w-5 text-amber-500 flex-shrink-0 mt-1" />
                          <div className="flex-1 min-w-0">
                            <p className="font-semibold text-white truncate">{pub.title}</p>
                            <p className="text-xs text-gray-400 mt-1">{new Date(pub.published_date).toLocaleDateString()}</p>
                          </div>
                          <ExternalLink className="h-4 w-4 text-gray-500 flex-shrink-0" />
                        </div>
                      </a>
                    ))}
                  </CardContent>
                </Card>
              )}

              {/* Submit Research Proposal CTA */}
              <Card className="bg-gradient-to-br from-amber-600/20 to-yellow-600/20 border-amber-500/40">
                <CardContent className="p-8 text-center space-y-4">
                  <h3 className="text-2xl font-bold text-white">Have a Research Idea?</h3>
                  <p className="text-gray-300">Submit your research proposal for the LABS pipeline</p>
                  <Button className="bg-gradient-to-r from-amber-600 to-yellow-600 hover:from-amber-700 hover:to-yellow-700">
                    <Send className="h-4 w-4 mr-2" />
                    Submit Research Proposal
                  </Button>
                </CardContent>
              </Card>
            </TabsContent>

            {/* Research Tracks Tab */}
            <TabsContent value="tracks" className="space-y-4 animate-fade-in">
              <ResearchWidget
                tracks={researchTracks.map((t: any) => ({
                  id: t.id,
                  title: t.title,
                  description: t.description,
                  status: t.status,
                  progress: t.progress || 0,
                  publications: t.publications || [],
                  whitepaper_url: t.whitepaper_url,
                  lead: t.lead?.full_name,
                }))}
                title="Active Research Tracks"
                description="Internal R&D projects"
                accentColor="amber"
              />
            </TabsContent>

            {/* Bounties Tab */}
            <TabsContent value="bounties" className="space-y-4 animate-fade-in">
              <Card className="bg-gradient-to-br from-amber-950/40 to-amber-900/20 border-amber-500/20">
                <CardHeader>
                  <CardTitle>Research Bounties</CardTitle>
                  <CardDescription>High-difficulty opportunities from NEXUS</CardDescription>
                </CardHeader>
                <CardContent>
                  {bounties.length === 0 ? (
                    <div className="text-center py-12">
                      <Zap className="h-12 w-12 mx-auto text-gray-500 opacity-50 mb-4" />
                      <p className="text-gray-400">No bounties available</p>
                    </div>
                  ) : (
                    <div className="space-y-3">
                      {bounties.map((bounty: any) => (
                        <div key={bounty.id} className="p-4 bg-black/30 rounded-lg border border-amber-500/10 hover:border-amber-500/30 transition">
                          <div className="flex items-start justify-between gap-4 mb-2">
                            <h4 className="font-semibold text-white">{bounty.title}</h4>
                            <p className="text-lg font-bold text-amber-400">${bounty.reward?.toLocaleString()}</p>
                          </div>
                          <p className="text-sm text-gray-400">{bounty.description}</p>
                          <Button size="sm" variant="outline" className="mt-3 border-amber-500/30 text-amber-300 hover:bg-amber-500/10">
                            View Details <ArrowRight className="h-3 w-3 ml-2" />
                          </Button>
                        </div>
                      ))}
                    </div>
                  )}
                </CardContent>
              </Card>
            </TabsContent>

            {/* Publications Tab */}
            <TabsContent value="pubs" className="space-y-4 animate-fade-in">
              <Card className="bg-gradient-to-br from-amber-950/40 to-amber-900/20 border-amber-500/20">
                <CardHeader>
                  <CardTitle>Publication Pipeline</CardTitle>
                  <CardDescription>Upcoming whitepapers and technical blog posts</CardDescription>
                </CardHeader>
                <CardContent>
                  {publications.length === 0 ? (
                    <div className="text-center py-12">
                      <FileText className="h-12 w-12 mx-auto text-gray-500 opacity-50 mb-4" />
                      <p className="text-gray-400">No publications</p>
                    </div>
                  ) : (
                    <div className="space-y-3">
                      {publications.map((pub: any) => (
                        <a key={pub.id} href={pub.url} target="_blank" rel="noopener noreferrer" className="p-4 bg-black/30 rounded-lg border border-amber-500/10 hover:border-amber-500/30 transition block">
                          <div className="flex items-start justify-between gap-4 mb-2">
                            <h4 className="font-semibold text-white">{pub.title}</h4>
                            <Badge className={pub.status === "published" ? "bg-green-600/50 text-green-100" : "bg-blue-600/50 text-blue-100"}>
                              {pub.status}
                            </Badge>
                          </div>
                          <p className="text-sm text-gray-400">{pub.description}</p>
                          <p className="text-xs text-gray-500 mt-2">{new Date(pub.published_date).toLocaleDateString()}</p>
                        </a>
                      ))}
                    </div>
                  )}
                </CardContent>
              </Card>
            </TabsContent>

            {/* IP Dashboard - Admin Only */}
            {isAdmin && (
              <Card className="bg-gradient-to-br from-red-950/40 to-red-900/20 border-red-500/20 mt-6">
                <CardHeader>
                  <CardTitle className="flex items-center gap-2">
                    <Lock className="h-5 w-5 text-red-500" />
                    IP Dashboard (Admin Only)
                  </CardTitle>
                </CardHeader>
                <CardContent className="space-y-4">
                  {ipPortfolio ? (
                    <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
                      <div className="p-4 bg-black/30 rounded-lg border border-red-500/20">
                        <p className="text-sm text-gray-400">Patents Filed</p>
                        <p className="text-3xl font-bold text-white">{ipPortfolio.patents_count || 0}</p>
                      </div>
                      <div className="p-4 bg-black/30 rounded-lg border border-red-500/20">
                        <p className="text-sm text-gray-400">Trademarks</p>
                        <p className="text-3xl font-bold text-white">{ipPortfolio.trademarks_count || 0}</p>
                      </div>
                      <div className="p-4 bg-black/30 rounded-lg border border-red-500/20">
                        <p className="text-sm text-gray-400">Trade Secrets</p>
                        <p className="text-3xl font-bold text-white">{ipPortfolio.trade_secrets_count || 0}</p>
                      </div>
                      <div className="p-4 bg-black/30 rounded-lg border border-red-500/20">
                        <p className="text-sm text-gray-400">Copyrights</p>
                        <p className="text-3xl font-bold text-white">{ipPortfolio.copyrights_count || 0}</p>
                      </div>
                    </div>
                  ) : (
                    <p className="text-gray-400 text-center py-8">IP portfolio data not available</p>
                  )}
                </CardContent>
              </Card>
            )}
          </Tabs>
        </div>
      </div>
    </Layout>
  );
}
