#!/usr/bin/env bash

main() {
	rm header/*
	echo -e "#![allow(warnings)]\n" > src/lib.rs
	local h
	for h in gks/gks.h gks/gkscore.h gr/gr.h gr/strlib.h
	do
		local base name header url patch
		base=${h##*/}
		name=${base%.h}
		header=header/${base}
		url=https://raw.githubusercontent.com/sciapp/gr/develop/lib/$h
		patch=patches/${name}.patch
		curl -o "${header}" "${url}" || { echo downloading ${url} failed; return; }
		if [[ -f ${patch} ]]
		then
			# patch can successfully execute with exit-code 0 even though the patch file is faulty
			# it generates a .orig file so that's how you can tell
			patch "${header}" < "${patch}" || return
			ls header | grep -q "\.orig" && { echo not quite right; return 1; }
		fi
		echo -e "pub mod ${name} { include!(concat!(env!(\"OUT_DIR\"), \"/${name}.rs\")); }\n" >> src/lib.rs
	done
	cargo fmt
	cargo clean
	cargo b --release --features bindgen
	rm -rf bindings
	mkdir bindings
	cp target/release/build/gr-sys-*/out/* bindings
}

main "$@"