#!/bin/sh
set -u

export XDG_DATA_HOME="$PWD/tests/test-profiles"
OUT=
ERR=
STATUS=

assert_status() {
	if [ "$STATUS" != "$1" ]; then
		echo "Unexpected status: $STATUS, expected: $1"
		exit 1
	fi
}

assert_usage() {
	if ! grep -Fq 'Usage' "$ERR"; then
		echo 'Expected to find "Usage" text, it was missing. STDERR was:'
		cat "$ERR"
		exit 1
	fi
}

test_unsupported_long_flags() {
	OUT="$(mktemp)"
	ERR="$(mktemp)"
	sh remembering --unknown-long-flag 1>"$OUT" 2>"$ERR"
	STATUS=$?
	assert_status 2
	assert_usage
}

test_missing_required_flags() {
	OUT="$(mktemp)"
	ERR="$(mktemp)"
	sh remembering -a something -b else 1>"$OUT" 2>"$ERR"
	STATUS=$?
	assert_status 2
	assert_usage
}

test_single_required_flag() {
	OUT="$(mktemp)"
	ERR="$(mktemp)"
	sh remembering -p valid-test-profile 1>"$OUT" 2>"$ERR"
	STATUS=$?
	assert_status 2
	assert_usage

	OUT="$(mktemp)"
	ERR="$(mktemp)"
	sh remembering -c 'head -n' 1>"$OUT" 2>"$ERR"
	STATUS=$?
	assert_status 2
	assert_usage
}

test_flags_without_required_argument() {
	OUT="$(mktemp)"
	ERR="$(mktemp)"
	sh remembering -pc 1>"$OUT" 2>"$ERR"
	STATUS=$?
	assert_status 2
	assert_usage

	OUT="$(mktemp)"
	ERR="$(mktemp)"
	sh remembering -cp 1>"$OUT" 2>"$ERR"
	STATUS=$?
	assert_status 2
	assert_usage

	OUT="$(mktemp)"
	ERR="$(mktemp)"
	sh remembering -p -c 1>"$OUT" 2>"$ERR"
	STATUS=$?
	assert_status 2
	assert_usage
}

test_valid_options() {
	OUT="$(mktemp)"
	ERR="$(mktemp)"
	printf 'a\nb\nc\n' | sh remembering -p "always-unique-$(uuidgen)" -c 'head -n1' 1>"$OUT" 2>"$ERR"
	STATUS=$?
	assert_status 0
	if [ "$(cat "$OUT")" != 'a' ]; then
		echo "Expected STDOUT ($OUT) to be 'a', but was:"
		cat "$OUT"
		exit 1
	fi
	if [ "$(cat "$ERR")" != '' ]; then
		echo "Expected STDERR ($ERR) to be empty, but has content:"
		cat "$ERR"
		exit 1
	fi
}

test_unsupported_long_flags
test_missing_required_flags
test_missing_required_flags
test_single_required_flag
test_flags_without_required_argument
test_valid_options