/**
 * IdentityTools - Optional identity-aware edit buttons for Edit Studio.
 *
 * Additive + non-destructive:
 *   - Only rendered when avatar identity models are installed
 *   - Does NOT replace or modify existing Quick Enhance / Background tools
 *   - Controlled by parent via `show` / capability booleans
 *
 * Basic Pack (InsightFace + InstantID):
 *   - Fix Faces+ (identity-aware face restoration)
 *   - Inpaint (Preserve Person)
 *   - Change BG (Preserve Person)
 *
 * Full Pack (+ InSwapper):
 *   - Face Swap (NOW FUNCTIONAL — uses ReActor/InSwapper workflow)
 */
import React, { useState } from 'react';
import { Loader2, UserCheck, Scan, ImageOff, Repeat, Shield } from 'lucide-react';
import { applyIdentityTool, IDENTITY_TOOLS, } from '../enhance/identityApi';
import { FaceSwapRefInput } from './FaceSwapRefInput';
// ---------------------------------------------------------------------------
// Icon map
// ---------------------------------------------------------------------------
function getIcon(id) {
    switch (id) {
        case 'fix_faces_identity':
            return <UserCheck size={18} className="text-cyan-400"/>;
        case 'inpaint_identity':
            return <Scan size={18} className="text-cyan-400"/>;
        case 'change_bg_identity':
            return <ImageOff size={18} className="text-cyan-400"/>;
        case 'face_swap':
            return <Repeat size={18} className="text-cyan-400"/>;
        default:
            return <Shield size={18} className="text-cyan-400"/>;
    }
}
// ---------------------------------------------------------------------------
// Component
// ---------------------------------------------------------------------------
export function IdentityTools({ backendUrl, apiKey, imageUrl, onResult, onError, disabled = false, hasBasicIdentity, hasFaceSwap, maskDataUrl, }) {
    const [loading, setLoading] = useState(null);
    // Face Swap reference input state (additive)
    const [showFaceSwapRef, setShowFaceSwapRef] = useState(false);
    const [faceSwapRefUrl, setFaceSwapRefUrl] = useState(null);
    // Don't render at all if no identity models installed
    if (!hasBasicIdentity)
        return null;
    const anyLoading = loading !== null;
    const isDisabled = disabled || !imageUrl;
    const handleTool = async (toolType, referenceUrl) => {
        if (!imageUrl || anyLoading || isDisabled)
            return;
        // For face_swap, require a reference image — show picker if not set
        if (toolType === 'face_swap' && !referenceUrl && !faceSwapRefUrl) {
            setShowFaceSwapRef(true);
            return;
        }
        const effectiveRefUrl = referenceUrl || faceSwapRefUrl;
        setLoading(toolType);
        try {
            const result = await applyIdentityTool({
                backendUrl,
                apiKey,
                imageUrl,
                toolType,
                referenceImageUrl: toolType === 'face_swap' ? effectiveRefUrl || undefined : undefined,
                maskDataUrl: toolType === 'inpaint_identity' && maskDataUrl ? maskDataUrl : undefined,
            });
            const resultUrl = result?.media?.images?.[0];
            if (resultUrl) {
                onResult(resultUrl, toolType);
                // Reset face swap state after successful swap
                if (toolType === 'face_swap') {
                    setFaceSwapRefUrl(null);
                    setShowFaceSwapRef(false);
                }
            }
            else {
                onError('Identity tool completed but no image was returned.');
            }
        }
        catch (e) {
            onError(e instanceof Error ? e.message : 'Identity tool failed');
        }
        finally {
            setLoading(null);
        }
    };
    // Filter visible tools based on installed models
    const visibleTools = IDENTITY_TOOLS.filter((tool) => {
        if (tool.pack === 'full')
            return hasFaceSwap;
        return true; // basic pack tools always visible when hasBasicIdentity
    });
    return (<div className="space-y-3">
      {/* Section header */}
      <div className="text-xs uppercase tracking-wider text-white/40 font-semibold flex items-center gap-2">
        <Shield size={14}/>
        Identity Tools
        <span className="text-[8px] px-1.5 py-0.5 rounded-full bg-cyan-500/15 border border-cyan-500/20 text-cyan-300/60 font-medium normal-case tracking-normal">
          Beta
        </span>
      </div>

      <p className="text-[10px] text-white/25 leading-relaxed -mt-1">
        Edit while preserving facial identity. Uses installed Avatar &amp; Identity models.
      </p>

      {/* Tool buttons */}
      <div className="grid grid-cols-1 gap-2">
        {visibleTools.map((tool) => (<div key={tool.id}>
            <button onClick={() => handleTool(tool.id)} disabled={isDisabled || anyLoading} className={`
                w-full flex items-center gap-3 p-3 rounded-xl border transition-all text-left
                ${loading === tool.id
                ? 'bg-cyan-500/20 border-cyan-500/40 text-cyan-300'
                : isDisabled || anyLoading
                    ? 'bg-white/5 border-white/5 text-white/30 cursor-not-allowed'
                    : 'bg-white/5 border-white/10 text-white/80 hover:bg-cyan-500/10 hover:border-cyan-500/30 hover:text-cyan-200'}
              `}>
              <div className={`
                w-9 h-9 rounded-lg flex items-center justify-center
                ${loading === tool.id ? 'bg-cyan-500/30' : 'bg-white/10'}
              `}>
                {loading === tool.id ? (<Loader2 size={18} className="animate-spin text-cyan-400"/>) : (getIcon(tool.id))}
              </div>
              <div className="flex-1 min-w-0">
                <div className="text-sm font-medium flex items-center gap-2">
                  {tool.label}
                  <span className="text-[9px] px-1.5 py-0.5 rounded bg-cyan-500/10 text-cyan-300/40">
                    {tool.pack === 'full' ? 'Full Pack' : 'Identity'}
                  </span>
                </div>
                <div className="text-[10px] text-white/40 truncate">
                  {tool.description}
                </div>
              </div>
            </button>

            {/* Face Swap reference input — shown inline below the Face Swap button */}
            {tool.id === 'face_swap' && showFaceSwapRef && (<FaceSwapRefInput backendUrl={backendUrl} apiKey={apiKey} onReferenceReady={(url) => {
                    setFaceSwapRefUrl(url);
                    setShowFaceSwapRef(false);
                    // Auto-trigger the swap immediately
                    handleTool('face_swap', url);
                }} onCancel={() => setShowFaceSwapRef(false)}/>)}
          </div>))}
      </div>
    </div>);
}