#!/usr/bin/env bash
set -o errexit


function print_usage() {
	echo "
Usage: $0 [OPTION] [project-name]

Description: Synthesize a project in scratch & produce bitfile.

Options:
 -h	Print this help info.

 -s	Synthesize only. Assumes that the 'syn-proj-prep' script has already
	been run.

Argument:
	The 'project-name' is an optional argument that will select which
	project to synthesize. Without the argument the default
	project-zedboard-conv' is used.
"
}


flag_s=

# command line options
while getopts "hs" flag
do
	case "$flag" in
		s) flag_s=1;;
		h) print_usage; exit 2;;
		?) print_usage; exit 2;;
	esac
done


# default project selection
PROJ='project-zedboard_axis'


# sanitise project argument
shift $(($OPTIND - 1))
if [ $# -gt 1 ]
then :
	echo "ERROR: To many arguments"
	exit 1
elif [ ! -d  "syn/$@" ]
then :
	echo "ERROR: Project not found"
	exit 1
fi


# assign project if given as argument
if [[ ! -z "$@" && "$@" != "$PROJ" ]]
then :
	PROJ=$@
fi


# prep for project syntheses
if [ -z "$flag_s" ]
then :
	./syn-proj-prep
fi

if [ ! -d syn/scratch ]
then :
	echo "ERROR: No 'syn/scratch' directory found"
	exit 1
fi


if [ -z "$(command -v vivado)" ]; then
	echo "ERROR: No Xilinx tool has been sourced."
	exit 1
fi

# generate the bitfile using Xilinx tools
cd syn/scratch/
vivado -mode tcl -source $PROJ/generate-bitfile.tcl


# copy bitfile to repo root
find ./$PROJ -name "*.bit" | xargs -I F cp F ../../${PROJ#"project-"}.bit