#!/bin/bash

# This script aims to help with kyomato usage, boiling it to a single command
# You can try running it as
# > KYOMATO_IMAGES=$(realpath ./image_folder) ./kyomato-helper.bash test_input/input.md
# From the directory it's located in

# It's functions are as follows:
# - Create a hidden directory near specified input file
# - Clear it, so that build is always clean
# - Run kyomato to transform input file into `.tex`
# - Run pdflatex twice on resulting `.tex`, to generate all tables correctly
# - Move resulting `.pdf` right near input file. Temporary hidden folder can be deleted manually, or used for debug

# check if kyomato exists:
( kyomato -V > /dev/null ) || { echo "can't reach kyomato"; exit -1; }

# check if pdflatex exists:
( pdflatex -v > /dev/null ) || { echo "can't reach pdflatex"; exit -1; }

# input file path is expected at first argument
input_file=$1
if [[ -z $input_file ]] then
    echo "input file must be supplied";
    exit -1;
fi
if [[ ! -f $input_file ]] then
    echo "File is expected as input";
    exit -1;
fi
echo "input file is ${input_file}"

# Determine working directory
source_directory=$( dirname $input_file )
if [[ -z source_directory ]] then 
    echo "dirname had failed. please contact me";
    exit -1;
fi
input_name=$( basename $input_file | cut -f 1 -d '.')
working_directory=$source_directory/.kyomato_tmp
echo "working directory is ${working_directory}"

# Ensure working directory exists
mkdir -p -v $working_directory
if [[ ! -z "$(dir $working_directory)" ]]  then
    # Clean up the working directory from previous runs
    rm -v -r --preserve-root=all $working_directory/*;
fi

# Actually run kyomato
execution_dir=$(pwd)
cd $working_directory
echo "running kyomato..."
( kyomato --in ../$( basename $input_file ) --debug-paths --exec $execution_dir > source.tex 2> kyomato_err.log ) || { echo "kyomato had failed, please contact me"; exit -1; }

# run pdflatex
echo "running pdflatex(1/2) ..."
( pdflatex -halt-on-error -file-line-error -interaction=nonstopmode -output-format=pdf -output-directory=. -shell-escape source.tex &> pdflatex1.log ) || { echo "pdflatex had failed, please contact me"; exit -1; }
echo "running pdflatex(2/2) ..."
( pdflatex -halt-on-error -file-line-error -interaction=nonstopmode -output-format=pdf -output-directory=. -shell-escape source.tex &> pdflatex2.log ) || { echo "pdflatex had failed, on the second run! please contact me"; exit -1; }
# yep, latex must be run twice
# because latex is weird

# at the end, move out generated pdf
mv -v -u source.pdf ../$input_name.pdf