#!/usr/bin/env bash

OUTPUT_DIR=".out"
FILE="main"

compile_latex() {
    mkdir -p "$OUTPUT_DIR" # if does not exist
    rm -rf "$OUTPUT_DIR/*" # if exist and full

    rsync -av --exclude="$OUTPUT_DIR" ./ "$OUTPUT_DIR" > /dev/null 2>&1

    cd "$OUTPUT_DIR" || exit

    if ! pdflatex --interaction=nonstopmode "$FILE.tex" > error.log 2>&1; then
        echo "Compilation failed. Check error.log for details."
    else
        echo "Compilation successful."
        rm error.log 
    fi

    cd .. || exit
}

compile_latex

zathura "$OUTPUT_DIR/$FILE.pdf" &

while true; do
    inotifywait -e modify -e create -e delete -r . --include '.*\.tex' > /dev/null 2>&1

    echo "Change detected. Compiling LaTeX files..."
    compile_latex
done