#!/bin/bash 

ROOT=$(dirname $0)

# Get CTQG path
export CTQG_PATH=${ROOT}/ctqg/CTQG
if [ $(echo $PATH | grep ${CTQG_PATH} | wc -l) -eq 0 ]; then
	export PATH=$PATH:$CTQG_PATH
fi

function show_help {
    echo "Usage: $0 [-h] [-rqFfcp] <filename>.scaffold"
    echo "    -r   Generate resource estimate (default)"
    echo "    -q   Generate QASM"
    echo "    -f   Generate flattened QASM"
    echo "    -R   Disable rotation decomposition"
    echo "    -F   Force running all steps"
    echo "    -c   Clean all files (no other actions)"
    echo "    -p   Purge all intermediate files (preserves specified output,"
    echo "         but requires recompilation for any new output)"
    echo "    -d   Dry-run; show all commands to be run, but do not execute"
}

# Parse opts
OPTIND=1         # Reset in case getopts has been used previously in the shell.
ctqg=0
clean=0
dryrun=""
force=0
purge=0
res=0
toff=0
targets=""
while getopts "h?cdfFpqrR" opt; do
    case "$opt" in
    h|\?)
        show_help
        exit 0
        ;;
    c) clean=1
        ;;
	d) dryrun="--dry-run"
		;;
    F) force=1
        ;;
    f) targets="${targets} flat"
        ;;
    p) purge=1
        ;;
    q) targets="${targets} qasm"
        ;;
    r) res=1
        ;;
    R) targets="${targets} ROTATIONS=0"
        ;;
    esac
done
shift $((OPTIND-1))
[ "$1" = "--" ] && shift

# Put resources at the end so it is easy to read
if [ ${res} -eq 1 ]; then
    targets="${targets} resources"
fi
# Don't purge until done
if [ ${purge} -eq 1 ]; then
    targets="${targets} purge"
fi
# Force first
if [ ${force} -eq 1 ]; then
    targets="clean ${targets}"
fi
# Default to resource estimate
if [ -z "${targets}" ]; then
    targets="resources"
fi

if [ $# -lt 1 ]; then 
    echo "Error: Missing filename argument" 
    show_help 
    exit 1 
fi 

filename=${1}
if [ ! -e ${filename} ]; then
    echo "${filename}: file not found"
    show_help
    exit 1
fi
dir="$(dirname ${filename})/"
file=$(basename ${filename} .scaffold)
cfile="${file}.*"

if [ $(egrep '^ctqg.*{\s*' ${filename} | wc -l) -gt 0 ]; then
	ctqg=1
	toff=0
	dir=""
fi

if [ ${clean} -eq 1 ]; then
	make -f $ROOT/scaffold/Scaffold.makefile ${dryrun} ROOT=$ROOT FILENAME=${filename} FILE=${file} CFILE=${cfile} clean
    exit
fi
make -f $ROOT/scaffold/Scaffold.makefile ${dryrun} ROOT=$ROOT FILENAME=${filename} FILE=${file} CFILE=${cfile} TOFF=${toff} CTQG=${ctqg} ${targets}

exit 0