import React, { useState } from 'react';
import { X, Plus, RefreshCw } from 'lucide-react';
const TRANSPORTS = ['SSE', 'STREAMABLEHTTP', 'HTTP', 'STDIO'];
export function AddServerDrawer({ backendUrl, apiKey, onClose, onRegistered }) {
    const [name, setName] = useState('');
    const [url, setUrl] = useState('');
    const [transport, setTransport] = useState('SSE');
    const [description, setDescription] = useState('');
    const [autoRefresh, setAutoRefresh] = useState(true);
    const [busy, setBusy] = useState(false);
    const [error, setError] = useState(null);
    const [success, setSuccess] = useState(false);
    const canSubmit = name.trim() && url.trim() && !busy;
    const handleSubmit = async () => {
        if (!canSubmit)
            return;
        setBusy(true);
        setError(null);
        try {
            const headers = { 'Content-Type': 'application/json' };
            if (apiKey)
                headers['x-api-key'] = apiKey;
            const res = await fetch(`${backendUrl}/v1/agentic/register/gateway`, {
                method: 'POST',
                headers,
                body: JSON.stringify({
                    name: name.trim(),
                    url: url.trim(),
                    transport,
                    description: description.trim(),
                    auto_refresh: autoRefresh,
                }),
            });
            const data = await res.json();
            if (!res.ok || !data.ok) {
                throw new Error(data.detail || `HTTP ${res.status}`);
            }
            setSuccess(true);
            setTimeout(() => {
                onRegistered();
                onClose();
            }, 1000);
        }
        catch (e) {
            setError(e?.message || 'Registration failed');
        }
        finally {
            setBusy(false);
        }
    };
    return (<div className="fixed inset-0 z-50 flex justify-end" onClick={onClose}>
      <div className="absolute inset-0 bg-black/60 backdrop-blur-sm"/>

      <div className="relative w-full max-w-md bg-[#0b0b12] border-l border-white/10 h-full overflow-y-auto animate-slide-in-right" onClick={(e) => e.stopPropagation()}>
        {/* Header */}
        <div className="sticky top-0 bg-[#0b0b12]/95 backdrop-blur border-b border-white/10 px-6 py-4 flex items-center justify-between z-10">
          <h2 className="text-base font-semibold text-white">Add MCP Server</h2>
          <button onClick={onClose} className="p-2 text-white/50 hover:text-white hover:bg-white/10 rounded-xl transition-colors">
            <X size={18}/>
          </button>
        </div>

        {/* Form */}
        <div className="px-6 py-6 space-y-5">
          {/* Name */}
          <div>
            <label className="text-xs font-semibold text-white/50 uppercase tracking-wide mb-1.5 block">
              Server Name *
            </label>
            <input type="text" value={name} onChange={(e) => setName(e.target.value)} placeholder="e.g. my-mcp-server" className="w-full bg-white/5 border border-white/10 rounded-xl px-4 py-2.5 text-sm text-white placeholder-white/30 focus:outline-none focus:border-purple-500/50 transition-colors"/>
          </div>

          {/* URL */}
          <div>
            <label className="text-xs font-semibold text-white/50 uppercase tracking-wide mb-1.5 block">
              Endpoint URL *
            </label>
            <input type="url" value={url} onChange={(e) => setUrl(e.target.value)} placeholder="e.g. http://localhost:9101/rpc" className="w-full bg-white/5 border border-white/10 rounded-xl px-4 py-2.5 text-sm text-white placeholder-white/30 focus:outline-none focus:border-purple-500/50 transition-colors"/>
          </div>

          {/* Transport */}
          <div>
            <label className="text-xs font-semibold text-white/50 uppercase tracking-wide mb-1.5 block">
              Transport
            </label>
            <div className="flex gap-2">
              {TRANSPORTS.map((t) => (<button key={t} onClick={() => setTransport(t)} className={`px-3 py-1.5 text-xs font-medium rounded-lg border transition-colors ${transport === t
                ? 'bg-purple-500/20 border-purple-500/50 text-purple-300'
                : 'bg-white/5 border-white/10 text-white/40 hover:text-white/60'}`}>
                  {t}
                </button>))}
            </div>
          </div>

          {/* Description */}
          <div>
            <label className="text-xs font-semibold text-white/50 uppercase tracking-wide mb-1.5 block">
              Description
            </label>
            <textarea value={description} onChange={(e) => setDescription(e.target.value)} placeholder="Optional description..." rows={3} className="w-full bg-white/5 border border-white/10 rounded-xl px-4 py-2.5 text-sm text-white placeholder-white/30 focus:outline-none focus:border-purple-500/50 transition-colors resize-none"/>
          </div>

          {/* Auto-refresh toggle */}
          <label className="flex items-center gap-3 cursor-pointer">
            <div onClick={() => setAutoRefresh(!autoRefresh)} className={`w-10 h-5 rounded-full transition-colors relative ${autoRefresh ? 'bg-purple-500' : 'bg-white/10'}`}>
              <div className={`absolute top-0.5 w-4 h-4 rounded-full bg-white transition-transform ${autoRefresh ? 'left-5' : 'left-0.5'}`}/>
            </div>
            <span className="text-sm text-white/70">Auto-discover tools after registration</span>
          </label>

          {/* Error / Success */}
          {error && (<div className="text-sm text-red-400 bg-red-500/10 border border-red-500/20 rounded-xl px-4 py-3">
              {error}
            </div>)}
          {success && (<div className="text-sm text-emerald-400 bg-emerald-500/10 border border-emerald-500/20 rounded-xl px-4 py-3">
              Server registered successfully!
            </div>)}

          {/* Submit */}
          <button onClick={handleSubmit} disabled={!canSubmit} className="w-full flex items-center justify-center gap-2 bg-purple-500 hover:bg-purple-600 disabled:bg-white/10 disabled:text-white/30 px-4 py-3 rounded-xl text-sm font-semibold transition-all">
            {busy ? (<RefreshCw size={16} className="animate-spin"/>) : (<Plus size={16}/>)}
            {busy ? 'Registering...' : 'Register Gateway'}
          </button>
        </div>
      </div>

      <style>{`
        @keyframes slide-in-right {
          from { transform: translateX(100%); }
          to { transform: translateX(0); }
        }
        .animate-slide-in-right {
          animation: slide-in-right 0.2s ease-out;
        }
      `}</style>
    </div>);
}