latexdiff for multi-files latex project

diff.sh

#! Need to install inkscape to automatically convert svg to pdf.
#!/bin/bash

if [ "$#" -ne 2 ]; then
  echo "Usage: $0 <submission-version-folder> <latest-version-folder>"
  exit 1
fi

SUBMISSION_FOLDER="$1"
LATEST_FOLDER="$2"
OUTPUT_DIFF="diff.tex"

if [ ! -d "$SUBMISSION_FOLDER" ] || [ ! -d "$LATEST_FOLDER" ]; then
  echo "Error: One or both directories do not exist."
  exit 1
fi

compile_latex() {
  local folder="$1"
  echo "Compiling LaTeX files in folder: $folder"
  cd "$folder" || exit
  pdflatex --shell-escape main.tex
  bibtex main
  pdflatex --shell-escape main.tex
  pdflatex --shell-escape main.tex
  cd - > /dev/null || exit
}

compile_latex "$SUBMISSION_FOLDER"
compile_latex "$LATEST_FOLDER"

echo "Generating the diff file..."
latexdiff --config="PICTUREENV=(?:tabular)[\w\d*@]*" --flatten "$SUBMISSION_FOLDER/main.tex" "$LATEST_FOLDER/main.tex" > "$OUTPUT_DIFF"

echo "Diff file generated: $OUTPUT_DIFF"