#!/usr/bin/env bash
set -u -o pipefail

TEST_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
declare -a shell_files=()
declare -a test_files=()
failures=0
required_command=''

if (( BASH_VERSINFO[0] < 4 ||
	(BASH_VERSINFO[0] == 4 && BASH_VERSINFO[1] < 3) )); then
	printf 'TA-ProxMenu tests require Bash 4.3 or newer; found %s.\n' \
		"$BASH_VERSION" >&2
	exit 1
fi

for required_command in git python3; do
	if ! command -v "$required_command" >/dev/null 2>&1; then
		printf 'TA-ProxMenu tests require %s.\n' "$required_command" >&2
		exit 1
	fi
done

while IFS= read -r -d '' file; do
	shell_files+=("$file")
done < <(
	find "$TEST_ROOT" -type f \( -name '*.sh' -o -name '*.inc' \) \
		-not -path '*/.git/*' -print0 |
		sort -z
)

printf 'Bash syntax\n'
for file in "${shell_files[@]}"; do
	if ! bash -n "$file"; then
		(( failures += 1 ))
	fi
done
(( failures == 0 )) && printf '  PASS: %d files\n' "${#shell_files[@]}"

printf '\nGit whitespace\n'
if git -C "$TEST_ROOT" diff --check &&
	git -C "$TEST_ROOT" diff --cached --check; then
	printf '  PASS\n'
else
	(( failures += 1 ))
fi

printf '\nShellCheck\n'
if command -v shellcheck >/dev/null 2>&1; then
	# These rules cannot follow TAPM's runtime-sourced defaults/colors or
	# functions invoked indirectly through traps and menu dispatch.
	if shellcheck -x -e SC1091,SC2034,SC2154,SC2317 "${shell_files[@]}"; then
		printf '  PASS\n'
	else
		(( failures += 1 ))
	fi
else
	printf '  SKIP: shellcheck is not installed\n'
fi

while IFS= read -r -d '' file; do
	test_files+=("$file")
done < <(
	find "${TEST_ROOT}/tests" -maxdepth 1 -type f -name 'test-*.sh' \
		-print0 | sort -z
)

printf '\nBehavior tests\n'
for file in "${test_files[@]}"; do
	printf '  %-30s ' "${file##*/}"
	if bash "$file"; then
		:
	else
		(( failures += 1 ))
	fi
done

printf '\n'
if (( failures > 0 )); then
	printf 'FAILED: %d check group(s) failed.\n' "$failures" >&2
	exit 1
fi
printf 'All TA-ProxMenu checks passed.\n'