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import { motion } from 'framer-motion';
import { Loader2, FileImage, FileVideo, Cpu, Activity, BarChart3, Eye, CheckCircle2 } from 'lucide-react';
import styles from './AnalysisProgress.module.css';

const STAGE_ICONS = {
  upload: FileImage,
  preprocess: Cpu,
  inference: Activity,
  gradcam: Eye,
  fft: BarChart3,
  temporal: FileVideo,
  verdict: CheckCircle2,
};

const SKELETONS = Array.from({ length: 3 });

export default function AnalysisProgress({ phase, currentStage, progress, file }) {
  const isVideo = file?.type?.startsWith('video/');
  const StageIcon = currentStage ? (STAGE_ICONS[currentStage.id] || Cpu) : Cpu;

  return (
    <div className={styles.container}>
      <motion.div
        className={styles.card}
        initial={{ opacity: 0, y: 24 }}
        animate={{ opacity: 1, y: 0 }}
        transition={{ duration: 0.4 }}
      >
        {/* Header */}
        <div className={styles.header}>
          <div className={styles.headerLeft}>
            <div className={styles.spinnerWrap}>
              <Loader2 size={18} className={styles.spinner} />
            </div>
            <div>
              <p className={styles.headerTitle}>Forensic Analysis in Progress</p>
              <p className={styles.headerSub}>{file?.name}</p>
            </div>
          </div>
          <div className={styles.progressBadge}>
            <span className="font-mono">{progress}%</span>
          </div>
        </div>

        {/* Progress bar */}
        <div className={styles.progressTrack}>
          <motion.div
            className={styles.progressBar}
            initial={{ width: 0 }}
            animate={{ width: `${progress}%` }}
            transition={{ ease: 'easeOut', duration: 0.4 }}
          />
        </div>

        {/* Current stage */}
        {currentStage && (
          <motion.div
            className={styles.stage}
            key={currentStage.id}
            initial={{ opacity: 0, x: -8 }}
            animate={{ opacity: 1, x: 0 }}
            transition={{ duration: 0.2 }}
          >
            <div className={styles.stageIcon}>
              <StageIcon size={14} />
            </div>
            <span>{currentStage.label}</span>
          </motion.div>
        )}

        {/* Skeleton preview */}
        <div className={styles.skeletonGrid}>
          {/* Media skeleton */}
          <div className={styles.skeletonMediaWrap}>
            <div className={styles.skeletonMedia}>
              <div className={styles.shimmer} />
            </div>
            <div className={styles.skeletonLines}>
              <div className={`${styles.skeletonLine} ${styles.skeletonLineLong}`}><div className={styles.shimmer} /></div>
              <div className={`${styles.skeletonLine} ${styles.skeletonLineMed}`}><div className={styles.shimmer} /></div>
              <div className={`${styles.skeletonLine} ${styles.skeletonLineShort}`}><div className={styles.shimmer} /></div>
            </div>
          </div>

          {/* Verdict skeleton */}
          <div className={styles.skeletonVerdictWrap}>
            <div className={styles.skeletonScoreCircle}><div className={styles.shimmer} /></div>
            {SKELETONS.map((_, i) => (
              <div key={i} className={styles.skeletonBlock}><div className={styles.shimmer} /></div>
            ))}
          </div>
        </div>

        {/* Models running */}
        <div className={styles.modelsRunning}>
          <p className={styles.modelsLabel}>Models running</p>
          <div className={styles.modelsList}>
            {['EfficientNet-B4', 'Xception', 'ViT Forensic', ...(isVideo ? ['Temporal CNN'] : [])].map((m, i) => (
              <div key={m} className={styles.modelItem}>
                <motion.div
                  className={styles.modelDot}
                  animate={{ opacity: [0.3, 1, 0.3] }}
                  transition={{ duration: 1.4, repeat: Infinity, delay: i * 0.3 }}
                />
                <span className="font-mono">{m}</span>
              </div>
            ))}
          </div>
        </div>
      </motion.div>
    </div>
  );
}