#!/bin/bash
# PANDA, a wrapper for pandoc by ntnsndr

# Check if the required arguments are provided
if [ $# -lt 1 ]; then
  echo "Usage: $0 [required-filename] [output format]"
  exit 1
fi

# Set the filename
FILENAME=$1

# Set the output format to html if not provided
if [ $# -eq 1 ]; then
  OUTPUT_FORMAT="html"
else
  OUTPUT_FORMAT=$2
fi

# Check if the input file exists
if [ ! -f $FILENAME ]; then
  echo "Error: Input file '$FILENAME' does not exist."
  exit 1
fi

# Set the file extension based on the output format
case $OUTPUT_FORMAT in
  pdf)
    FILE_EXT="pdf"
    OUTPUT_FORMAT="latex --variable fontsize='11pt'"
    ;;
  reveal)
    FILE_EXT="html"
    OUTPUT_FORMAT="revealjs --standalone --embed-resources -V revealjs-url='/home/ntnsndr/.revealjs/reveal.js' -V theme=ntn -V controls=false --slide-level=2"
    ;;
  pptx)
    FILE_EXT="pptx"
    OUTPUT_FORMAT="pptx --reference-doc='/home/ntnsndr/.templates/Slideshow.pptx'"
    ;;
  *)
    FILE_EXT=$OUTPUT_FORMAT
    ;;
esac

# Create temporary files
TMP_IN_FILE="/tmp/pandoc-in.tmp"
TMP_OUT_FILE="/tmp/pandoc-out.$FILE_EXT"

# Check if the temporary files can be created
if [ ! -w /tmp ]; then
  echo "Error: Cannot create temporary files in '/tmp' directory."
  exit 1
fi

# Copy the input file to the temporary file
cp $FILENAME $TMP_IN_FILE

# Convert the file using pandoc
iconv -t utf-8 $TMP_IN_FILE | pandoc -s -f markdown+smart --citeproc --bibliography $HOME/Zotero/lib.bib --pdf-engine=xelatex -t $OUTPUT_FORMAT -o $TMP_OUT_FILE

# Check if the pandoc command is successful
if [ $? -ne 0 ]; then
  echo "Error: Pandoc command failed."
  exit 1
fi

# Open the output file
xdg-open $TMP_OUT_FILE

# Check if the output file can be opened
if [ $? -ne 0 ]; then
  echo "Error: Cannot open output file '$TMP_OUT_FILE'."
  exit 1
fi