Restore the backup files to a destination folder

restore.sh

#!/bin/bash

# Default values
DEFAULT_COMPRESSED_FILE="/backups/file.tar.gz"
DEFAULT_DEST_DIR="/public_html"

# Prompt for the compressed file
read -p "Enter the path to the compressed file [${DEFAULT_COMPRESSED_FILE}]: " COMPRESSED_FILE
COMPRESSED_FILE=${COMPRESSED_FILE:-$DEFAULT_COMPRESSED_FILE}

# Check if the compressed file exists
if [ ! -f "$COMPRESSED_FILE" ]; then
  echo "Error: File '$COMPRESSED_FILE' not found."
  exit 1
fi

# Check if the file has a .tar.gz extension
if [[ "$COMPRESSED_FILE" != *.tar.gz ]]; then
  echo "Error: The file '$COMPRESSED_FILE' is not a .tar.gz file."
  exit 1
fi

# Prompt for the destination directory
read -p "Enter the destination directory [${DEFAULT_DEST_DIR}]: " DEST_DIR
DEST_DIR=${DEST_DIR:-$DEFAULT_DEST_DIR}

# Check if the destination directory is writable or can be created
if [ -d "$DEST_DIR" ]; then
  if [ ! -w "$DEST_DIR" ]; then
    echo "Error: The destination directory '$DEST_DIR' is not writable."
    exit 1
  fi
else
  echo "The destination directory '$DEST_DIR' does not exist. Creating it now..."
  mkdir -p "$DEST_DIR"
  if [ $? -ne 0 ]; then
    echo "Error: Could not create destination directory '$DEST_DIR'."
    exit 1
  fi
fi

# Check if there is enough space to uncompress the file
AVAILABLE_SPACE=$(df --output=avail "$DEST_DIR" | tail -1)
REQUIRED_SPACE=$(du -s "$COMPRESSED_FILE" | cut -f1)

if [ "$REQUIRED_SPACE" -gt "$AVAILABLE_SPACE" ]; then
  echo "Error: Not enough space to uncompress the file in '$DEST_DIR'."
  exit 1
fi

# Uncompress the file to the destination directory without including the directory structure
tar -xzvf "$COMPRESSED_FILE" -C "$DEST_DIR"

# Check if the tar command was successful
if [ $? -eq 0 ]; then
  echo "Files uncompressed successfully to ${DEST_DIR}"
else
  echo "Error: Failed to uncompress the file."
  exit 1
fi