#!/bin/bash

# Extract script for structured3d dataset
# This script extracts the contents of structured3d.tar.gz

DATASET_NAME="structured3d"
TAR_FILE="structured3d.tar.gz"
EXTRACT_DIR="extracted"

echo "Extracting $DATASET_NAME dataset"
echo "================================="

if [ ! -f "$TAR_FILE" ]; then
    echo "Error: $TAR_FILE not found"
    echo "Run ./merge.sh first to reassemble the file"
    exit 1
fi

# Get file size
file_size=$(ls -lh "$TAR_FILE" | awk '{print $5}')
echo "File: $TAR_FILE ($file_size)"

# Create extraction directory
mkdir -p "$EXTRACT_DIR"

echo "Extracting to $EXTRACT_DIR/..."

# Extract the tar.gz file
tar -xzf "$TAR_FILE" -C "$EXTRACT_DIR"

if [ $? -eq 0 ]; then
    echo "✓ Successfully extracted $TAR_FILE"
    
    echo
    echo "Contents:"
    ls -la "$EXTRACT_DIR"
    
    echo
    echo "Extraction complete! Files are in the '$EXTRACT_DIR' directory."
    
    # Show disk usage
    echo
    echo "Disk usage:"
    du -sh "$EXTRACT_DIR"
    
else
    echo "✗ Failed to extract $TAR_FILE"
    echo "The file might be corrupted or incomplete"
    exit 1
fi