#!/bin/sh

tmp=$(mktemp)
trap "rm -f $tmp" EXIT

global_fail=0

cmd_scd_sed='s/^\*:([a-z][a-z -]*)\*.*/\1/p'
cmd_go_sed='/^func ([[:alnum:]][[:alnum:]]*) Aliases() \[\]string {$/{n;
        s/", "/ /g;
        s/.*return \[\]string{"\(.*\)"}/\1/p
}'

grep_color=
if echo . | grep --color . >/dev/null 2>&1; then
	grep_color=--color
fi

fail=0
sed -nE "$cmd_scd_sed" doc/*.scd | tr ' ' '\n' > "$tmp"
for f in $(find commands -type f -name '*.go'); do
	for cmd in $(sed -n "$cmd_go_sed" "$f"); do
		if ! grep -qFx "$cmd" "$tmp"; then
			grep -HnF $grep_color "\"$cmd\"" "$f"
			fail=$((fail+1))
		fi
	done
done

if [ "$fail" -gt 0 ]; then
	echo "error: $fail command(s) not documented in man pages" >&2
	global_fail=1
fi

fail=0
sed -n "$cmd_go_sed" $(find commands -type f -name '*.go') | tr ' ' '\n' > "$tmp"
for f in doc/*.scd; do
	for cmd in $(sed -nE "$cmd_scd_sed" "$f" | tr ' ' '\n' | sed '/^-/d;/^$/d'); do
		if ! grep -qFx "$cmd" "$tmp"; then
			grep -Hn $grep_color "^\\*:$cmd\\*" "$f"
			fail=$((fail+1))
		fi
	done
done

if [ "$fail" -gt 0 ]; then
	echo "error: $fail non-existent command(s) documented in man pages" >&2
	global_fail=1
fi

fail=0
sed -nE 's/^\*([a-z][a-z-]*)\* = .*/\1/p' doc/*.scd > "$tmp"
for f in $(find config -type f -name '*.go'); do
	for opt in $(sed -nE 's/.*`ini:"([a-z][a-z-]*)".*/\1/p' $f); do
		if ! grep -qFx "$opt" "$tmp"; then
			grep -HnF $grep_color "\"$opt\"" "$f"
			fail=$((fail+1))
		fi
	done
done

if [ "$fail" -gt 0 ]; then
	echo "error: $fail option(s) not documented in man pages" >&2
	global_fail=1
fi

exit $global_fail