import React, { useState } from 'react';
import { JobData } from '../types';
import * as api from '../services/api';

interface ProcessingPanelProps {
  job: JobData | null;
  embedded?: boolean;
  onEnhance?: (job: JobData) => void;
}

const ProcessingPanel: React.FC<ProcessingPanelProps> = ({ job, embedded = false, onEnhance }) => {
  const [downloadingType, setDownloadingType] = useState<'main' | 'enhanced' | null>(null);
  const [copySuccess, setCopySuccess] = useState(false);

  if (!job) return null;

  const isCompleted = job.status === 'completed';
  const isFailed = job.status === 'failed' || job.status === 'error';
  
  const VC_BASE_URL = 'https://ezmarynoori-sada.hf.space';
  
  let downloadUrl = '#';
  if (isCompleted) {
      if (job.downloadUrl) {
          downloadUrl = job.downloadUrl;
      } else if (job.filename) {
          downloadUrl = `${VC_BASE_URL}/download/${job.filename}`;
      }
  }

  const enhanceInfo = job.enhancement;
  const isEnhancing = enhanceInfo?.status === 'processing' || enhanceInfo?.status === 'started';
  const isEnhanceCompleted = enhanceInfo?.status === 'completed';
  // استفاده اولویت‌دار از لینک مستقیم بله که در مرورگر ذخیره شده است
  const enhanceDownloadUrl = isEnhanceCompleted 
        ? (enhanceInfo?.downloadUrl || (enhanceInfo?.filename ? api.getEnhancementDownloadUrl(enhanceInfo.filename) : '#')) 
        : '#';

  const handleDownload = async (e: React.MouseEvent, url: string, type: 'main' | 'enhanced') => {
    e.preventDefault();
    if (downloadingType) return;

    setDownloadingType(type);
    try {
      let blobUrl = url;
      if (!url.startsWith('blob:')) {
          const resp = await fetch(url);
          if (!resp.ok) throw new Error(`Network response was not ok: ${resp.statusText}`);
          const blob = await resp.blob();
          blobUrl = URL.createObjectURL(blob);
      }

      window.parent.postMessage({
        type: 'INITIATE_DOWNLOAD_FROM_URL',
        payload: { audioUrl: blobUrl }
      }, '*');

    } catch (err) {
      console.error("Download preparation error:", err);
      alert("خطا در آماده‌سازی دانلود. لطفاً اتصال اینترنت خود را بررسی کنید.");
    } finally {
      setDownloadingType(null);
    }
  };

  const handleCopyErrorLog = () => {
    const logText = job.statusMessage || 'Unknown Error';
    navigator.clipboard.writeText(logText).then(() => {
      setCopySuccess(true);
      setTimeout(() => setCopySuccess(false), 2000);
    }).catch(err => {
      console.error('Failed to copy error log', err);
    });
  };

  const containerClasses = embedded 
    ? "bg-gray-50/80 rounded-lg p-3 mt-2 border border-gray-100 animate-[fadeIn_0.3s_ease-out]"
    : "bg-white rounded-3xl shadow-lg border border-gray-100 p-6 mt-6 animate-[slideUp_0.5s_ease-out]";

  return (
    <div className={containerClasses}>
      
      <div className="flex items-center justify-between mb-2">
        <div>
          <h4 className={`font-bold text-gray-800 ${embedded ? 'text-xs' : 'text-lg'}`}>
            {isCompleted ? 'فایل اصلی آماده' : isFailed ? 'خطا در پردازش' : 'در حال تغییر صدا...'}
          </h4>
          {!embedded && (
            <p className="text-xs text-gray-500">
              {job.type === 'model' ? `مدل: ${job.modelName}` : 'اختصاصی'}
            </p>
          )}
        </div>
        {!embedded && (
          <div className={`w-10 h-10 rounded-full flex items-center justify-center text-white shadow-md
            ${isCompleted ? 'bg-green-500' : isFailed ? 'bg-red-500' : 'bg-amber-400'}`}>
            <i className={`fas ${isCompleted ? 'fa-check' : isFailed ? 'fa-exclamation' : 'fa-cog fa-spin'}`}></i>
          </div>
        )}
      </div>

      {!isCompleted && !isFailed && (
        <div className="mb-2">
          {!embedded && (
            <div className="flex justify-between text-xs text-gray-500 mb-1">
              <span>پیشرفت کلی</span>
              <span>{job.progress || 0}%</span>
            </div>
          )}
          <div className={`w-full bg-gray-200 rounded-full overflow-hidden ${embedded ? 'h-1.5' : 'h-2'}`}>
            <div 
              className="h-full bg-gradient-to-r from-amber-400 to-orange-500 rounded-full transition-all duration-500 relative"
              style={{ width: `${job.progress || 0}%` }}
            >
              <div className="absolute inset-0 bg-white/20 w-full h-full animate-[shimmer_2s_infinite]"></div>
            </div>
          </div>
          <p className="text-center text-[10px] text-gray-500 mt-2 font-medium truncate px-1">
             {job.statusMessage || 'در حال انجام عملیات...'}
          </p>
        </div>
      )}

      {isCompleted && (
        <div className={`${embedded ? 'mt-1' : 'mt-4 pt-4 border-t border-gray-100'}`}>
          <audio controls className={`w-full ${embedded ? 'mb-2 h-7' : 'mb-3 h-8'}`} src={downloadUrl} />
          
          <a 
            href="#"
            onClick={(e) => handleDownload(e, downloadUrl, 'main')}
            className={`block w-full text-center text-white rounded-xl font-bold transition-all shadow-sm flex items-center justify-center gap-2
              ${embedded ? 'py-2 text-xs bg-gray-600 hover:bg-gray-700' : 'py-3 bg-gray-600 shadow-gray-200'}
              ${downloadingType === 'main' ? 'opacity-70 cursor-wait' : ''}`}
          >
             {downloadingType === 'main' ? (
                 <><i className="fas fa-circle-notch fa-spin"></i> آماده‌سازی...</>
             ) : (
                 <><i className="fas fa-download"></i> دانلود صدای اصلی (معمولی)</>
             )}
          </a>
        </div>
      )}

      {isFailed && (
        <div 
          onClick={handleCopyErrorLog}
          className="mt-1 p-2 bg-red-50 text-red-600 rounded-lg text-[10px] text-center border border-red-100 cursor-pointer hover:bg-red-100 transition-colors relative group"
        >
          {copySuccess ? (
            <span className="font-bold text-green-600 animate-pulse">
               <i className="fas fa-check mr-1"></i> متن خطا کپی شد
            </span>
          ) : (
            <span className="flex items-center justify-center gap-1">
               خطا در پردازش.
            </span>
          )}
        </div>
      )}

      {isCompleted && onEnhance && (
        <div className={`mt-4 pt-4 border-t-2 border-dashed ${isEnhanceCompleted ? 'border-amber-200 bg-amber-50/50 -mx-3 px-3 pb-3 rounded-b-xl' : 'border-gray-100'}`}>
            
            {!enhanceInfo && (
                <button
                    onClick={() => onEnhance(job)}
                    className="group relative w-full overflow-hidden rounded-xl bg-gradient-to-r from-violet-600 to-indigo-600 p-[2px] transition-all hover:shadow-lg hover:shadow-indigo-500/30 focus:outline-none focus:ring-2 focus:ring-indigo-400 focus:ring-offset-2 active:scale-95"
                >
                    <div className="relative flex items-center justify-center gap-2 rounded-[10px] bg-white px-4 py-2.5 transition-all group-hover:bg-transparent group-hover:text-white">
                        <i className="fas fa-wand-magic-sparkles text-lg text-indigo-600 transition-colors group-hover:text-white animate-pulse"></i>
                        <span className="font-black text-sm text-gray-800 transition-colors group-hover:text-white">
                            افزایش کیفیت صدا و حذف نویز (AI)
                        </span>
                    </div>
                </button>
            )}

            {enhanceInfo && isEnhancing && (
                <div className="animate-[fadeIn_0.5s_ease-out]">
                    <div className="flex items-center justify-between mb-2">
                        <span className="text-xs font-bold text-indigo-700 flex items-center gap-2">
                            <i className="fas fa-sparkles fa-spin text-amber-500"></i>
                            در حال حذف نویز و تقویت صدا...
                        </span>
                        <span className="text-[11px] font-black text-indigo-600">{enhanceInfo.progress || 0}%</span>
                    </div>
                    <div className="h-3 w-full rounded-full bg-indigo-100 overflow-hidden shadow-inner">
                        <div 
                            className="h-full rounded-full bg-gradient-to-r from-violet-500 via-fuchsia-500 to-indigo-500 transition-all duration-500 ease-out relative"
                            style={{ width: `${Math.max(5, enhanceInfo.progress || 0)}%` }}
                        >
                            <div className="absolute inset-0 bg-white/30 w-full h-full animate-[shimmer_1.5s_infinite]"></div>
                        </div>
                    </div>
                    <p className="text-[9px] text-center text-indigo-400 mt-1 font-bold">در حال انجام کار ممکن است زمان‌بر باشد</p>
                </div>
            )}

            {enhanceInfo && isEnhanceCompleted && (
                <div className="animate-[scaleIn_0.4s_cubic-bezier(0.175,0.885,0.32,1.275)]">
                    <div className="flex items-center gap-2 mb-2 justify-center">
                        <i className="fas fa-star text-amber-400 text-sm animate-[spin_3s_linear_infinite]"></i>
                        <h5 className="text-xs font-black text-amber-700">نسخه تقویت شده (High Quality)</h5>
                        <i className="fas fa-star text-amber-400 text-sm animate-[spin_3s_linear_infinite_reverse]"></i>
                    </div>
                    
                    <audio controls className="w-full h-7 mb-2 border border-amber-200 rounded-full bg-amber-100" src={enhanceDownloadUrl} />

                    <a 
                        href="#"
                        onClick={(e) => handleDownload(e, enhanceDownloadUrl, 'enhanced')}
                        className={`block w-full text-center text-white rounded-xl font-bold bg-gradient-to-r from-amber-500 to-orange-500 py-2.5 text-xs shadow-lg shadow-amber-500/30 hover:shadow-amber-500/50 transition-all transform hover:-translate-y-0.5 active:translate-y-0
                        ${downloadingType === 'enhanced' ? 'opacity-70 cursor-wait' : ''}`}
                    >
                        {downloadingType === 'enhanced' ? (
                             <><i className="fas fa-circle-notch fa-spin mr-1"></i> در حال آماده‌سازی...</>
                         ) : (
                             <><i className="fas fa-download mr-1"></i> دانلود صدای با کیفیت عالی</>
                         )}
                    </a>
                </div>
            )}
             
             {enhanceInfo?.status === 'failed' && (
                <div className="text-xs text-red-500 bg-red-50 p-2 rounded border border-red-100 text-center font-bold">
                    خطا در تقویت صدا. لطفا دوباره تلاش کنید.
                </div>
             )}

        </div>
      )}

    </div>
  );
};

export default ProcessingPanel;