#!/bin/sh

set -e

# check if we have tomcat(1)
if ! command -v tomcat >/dev/null 2>&1; then
	printf "%s: Missing dependency: tomcat(1)\n"
	exit 69 # sysexits(3) EX_UNAVAILABLE
fi

dir="$(pwd | sed 's/\//\n/g' | tail -n 1)"

for toml in $(find "$PWD" -name "Cargo.toml"); do
	printf "Project: %s\n" "$(tomcat package.name "$toml")"
	toml_lic="$(tomcat package.license "$toml")"
	if ! test -n "$toml_lic"; then
		printf "%s: Missing license information\n" "$(printf "%s\n" "$toml" |\
			sed "s/^.\+$dir\///g")"
		continue 2
	fi
	for file in $(find "$(printf "%s\n" "$toml" |\
		sed 's/Cargo\.toml/src/g')" -name "*.rs")
	do
		info="$(head -n 2 "$file")"
		if ! [ "$toml_lic" = "$(printf "%s\n" "$info" | tail -n 1 |\
			sed -n 's/\/\/ SPDX-License-Identifier: //p')" ]
		then
			printf "%s: Missing or malformed license information\n" \
				"$(printf "%s\n" "$file" | sed "s/^.\+$dir\///g")"
		fi
		if ! test -n "$(printf "%s\n" "$info" | head -n 1 |\
			sed -n '/\/\/ Copyright (c) .\+/p')"
		then
			printf "%s: Missing or malformed copyright holder information\n" \
        "$(printf "%s\n" "$file" | sed "s/^.\+$dir\///g")"
		fi
	done
done