import React from 'react';
import { Link } from 'react-router-dom';
import { useAuth } from '@/contexts/AuthContext';
import { useForum } from '@/contexts/ForumContext';
import { Button } from '@/components/ui/button';
import { Badge } from '@/components/ui/badge';
import { ShieldCheck, LogOut, Terminal, Wifi, WifiOff, AlertTriangle, CheckCircle, Key, RefreshCw, CircleSlash } from 'lucide-react';
import { Tooltip, TooltipContent, TooltipTrigger } from '@/components/ui/tooltip';
import { SDSStatus } from './SDSStatus';

const Header = () => {
  const { 
    currentUser, 
    isAuthenticated, 
    verificationStatus, 
    connectWallet, 
    disconnectWallet, 
    verifyOrdinal, 
    delegateKey, 
    isDelegationValid,
    delegationTimeRemaining 
  } = useAuth();
  const { isNetworkConnected, isRefreshing } = useForum();
  
  const handleConnect = async () => {
    await connectWallet();
  };
  
  const handleDisconnect = () => {
    disconnectWallet();
  };
  
  const handleVerify = async () => {
    await verifyOrdinal();
  };

  const handleDelegateKey = async () => {
    await delegateKey();
  };

  const formatDelegationTime = () => {
    if (!isDelegationValid()) return null;
    
    const timeRemaining = delegationTimeRemaining();
    const hours = Math.floor(timeRemaining / (1000 * 60 * 60));
    const minutes = Math.floor((timeRemaining % (1000 * 60 * 60)) / (1000 * 60));

    return `${hours}h ${minutes}m`; 
  };

  const renderDelegationButton = () => {
    if (verificationStatus !== 'verified-owner') return null; 
    
    const hasValidDelegation = isDelegationValid();
    const timeRemaining = formatDelegationTime();
    
    return (
      <Tooltip>
        <TooltipTrigger asChild>
          <Button
            variant={hasValidDelegation ? "outline" : "default"}
            size="sm"
            className="flex items-center gap-1 text-xs px-2 h-7" 
            onClick={handleDelegateKey}
          >
            <Key className="w-3 h-3" /> 
            {hasValidDelegation 
              ? <span>KEY ACTIVE ({timeRemaining})</span> 
              : <span>DELEGATE KEY</span>}
          </Button>
        </TooltipTrigger>
        <TooltipContent className="max-w-[260px] text-sm">
          {hasValidDelegation ? (
            <p>Browser key active for ~{timeRemaining}. Wallet signatures not needed for most actions.</p>
          ) : (
            <p>Delegate a browser key for 24h to avoid constant wallet signing.</p>
          )}
        </TooltipContent>
      </Tooltip>
    );
  };

  const renderAccessBadge = () => {
    if (verificationStatus === 'unverified') {
      return (
        <Tooltip>
          <TooltipTrigger asChild>
            <Button
              variant="outline"
              size="sm"
              onClick={handleVerify}
              className="flex items-center gap-1 text-xs px-2 h-7 border-destructive text-destructive hover:bg-destructive/10" 
            >
              <AlertTriangle className="w-3 h-3" /> 
              <span>[UNVERIFIED] Verify</span>
            </Button>
          </TooltipTrigger>
           <TooltipContent className="max-w-[260px] text-sm">
             <p className="font-semibold mb-1">Action Required</p>
             <p>Verify your Ordinal ownership to enable posting, commenting, and voting.</p>
           </TooltipContent>
        </Tooltip>
      );
    }
    
    if (verificationStatus === 'verifying') {
      return (
        <Badge 
          variant="outline" 
          className="flex items-center gap-1 text-xs px-2 h-7"
        >
          <RefreshCw className="w-3 h-3 animate-spin" />
          <span>[VERIFYING...]</span>
        </Badge>
      );
    }
    
    if (verificationStatus === 'verified-none') {
      return (
        <Tooltip>
           <TooltipTrigger asChild>
             <Badge 
               variant="secondary" 
               className="flex items-center gap-1 cursor-help text-xs px-2 h-7"
             >
               <CircleSlash className="w-3 h-3" /> 
               <span>[VERIFIED | READ-ONLY]</span>
             </Badge>
           </TooltipTrigger>
           <TooltipContent className="max-w-[260px] text-sm">
             <p className="font-semibold mb-1">Wallet Verified - No Ordinals</p>
             <p>No Ordinal Operators found. Read-only access granted.</p>
             <Button size="sm" variant="link" onClick={handleVerify} className="p-0 h-auto mt-1 text-xs">Verify Again?</Button>
           </TooltipContent>
        </Tooltip>
      );
    }
    
    // Verified - Ordinal Owner
    if (verificationStatus === 'verified-owner') {
      return (
         <Tooltip>
           <TooltipTrigger asChild>
             <Badge 
               variant="default" 
               className="flex items-center gap-1 cursor-help text-xs px-2 h-7 bg-primary text-primary-foreground" 
             >
               <CheckCircle className="w-3 h-3" /> 
               <span>[OWNER ✔]</span>
             </Badge>
           </TooltipTrigger>
           <TooltipContent className="max-w-[260px] text-sm">
              <p className="font-semibold mb-1">Ordinal Owner Verified!</p>
              <p>Full forum access granted.</p>
              <Button size="sm" variant="link" onClick={handleVerify} className="p-0 h-auto mt-1 text-xs">Verify Again?</Button>
           </TooltipContent>
        </Tooltip>
      );
    }
    
    return null;
  };
  
  return (
    <header className="border-b border-cyber-muted bg-cyber-dark fixed top-0 left-0 right-0 z-50 h-16"> 
      <div className="container mx-auto px-4 h-full flex justify-between items-center">
        <div className="flex items-center gap-2">
          <Terminal className="text-cyber-accent w-6 h-6" />
          <Link to="/" className="text-xl font-bold text-glow text-cyber-accent">
            OpChan
          </Link>
         
        </div>
        
        <div className="flex gap-3 items-center"> 
          <Tooltip>
            <TooltipTrigger asChild>
              <Badge 
                variant={isNetworkConnected ? "default" : "destructive"}
                className="flex items-center gap-1 text-xs px-2 h-7 cursor-help" 
              >
                {isNetworkConnected ? (
                  <>
                    <Wifi className="w-3 h-3" />
                    <span>WAKU: Connected</span>
                  </>
                ) : (
                  <>
                    <WifiOff className="w-3 h-3" />
                    <span>WAKU: Offline</span>
                  </>
                )}
              </Badge>
            </TooltipTrigger>
            <TooltipContent className="text-sm">
              <p>{isNetworkConnected ? "Waku network connection active." : "Waku network connection lost."}</p>
              {isRefreshing && <p>Refreshing data...</p>}
            </TooltipContent>
          </Tooltip>
          
          <SDSStatus />
          
          {!currentUser ? (
            <Button 
              variant="outline" 
              size="sm"
              onClick={handleConnect}
              className="text-xs px-2 h-7" 
            >
              Connect Wallet
            </Button>
          ) : (
            <div className="flex gap-2 items-center"> 
              {renderAccessBadge()}
              {renderDelegationButton()}
              <Tooltip>
                <TooltipTrigger asChild>
                  <span className="hidden md:flex items-center text-xs text-muted-foreground cursor-default px-2 h-7"> 
                    {currentUser.address.slice(0, 5)}...{currentUser.address.slice(-4)}
                  </span>
                </TooltipTrigger>
                <TooltipContent className="text-sm">
                  <p>{currentUser.address}</p>
                </TooltipContent>
              </Tooltip>
              <Tooltip>
                 <TooltipTrigger asChild>
                  <Button
                    variant="ghost"
                    size="icon"
                    onClick={handleDisconnect}
                    className="w-7 h-7" 
                  >
                    <LogOut className="w-4 h-4" />
                  </Button>
                 </TooltipTrigger>
                 <TooltipContent className="text-sm">Disconnect Wallet</TooltipContent>
              </Tooltip>
            </div>
          )}
        </div>
      </div>
    </header>
  );
};

export default Header;