#!/usr/bin/env bash
# Self-check for orchestra_e2e_healthcheck.sh.

HC="$(dirname "$0")/orchestra_e2e_healthcheck.sh"
OK='OK - all healthchecks passed'
NAMES='repo_root_readable scripts_dir_present healthcheck_executable_bit
selftest_present test_healthcheck_present readme_present
no_crlf_line_endings no_tabs_in_scripts
shebang_is_bash usage_text_mentions_every_flag'
LABELS='repo_root_readable: the repository root exists and is readable
scripts_dir_present: the scripts directory exists
healthcheck_executable_bit: this script is executable
selftest_present: the selftest script is present
test_healthcheck_present: the healthcheck test is present
readme_present: README.md is present
no_crlf_line_endings: no tracked text file uses CRLF endings
no_tabs_in_scripts: no script indents with tabs
shebang_is_bash: every script declares the bash shebang
usage_text_mentions_every_flag: the usage text lists every flag'
USAGE="$(printf 'Usage: orchestra_e2e_healthcheck.sh [--quiet] [--json] [--summary] [--timing] [--strict] [--list-checks]\n\nHealthcheck script for Orchestra E2E tests.\nExits 0 with a success message if all checks pass.\n  --quiet  Suppress the success message; still exits 0.\n  --json   Print a single-line JSON result; still exits 0.\n  --help   Print this usage text and exit 0.\n  --summary  Print one line per check before the success message.\n  --timing Print elapsed milliseconds for the run.\n  --strict Reject an unrecognised flag: exits 2.\n  --list-checks  Print the name of each check; exits 0.\n\nChecks:\n'
  while IFS= read -r line; do printf '  %s\n' "$line"; done <<<"$LABELS"
  printf '\nVersion: 1.0.0')"
fails=0

check() { # check <expected-stdout> <label> [args...]
  local want=$1 label=$2 got status
  shift 2
  got=$(bash "$HC" "$@" 2>/dev/null)
  status=$?
  if [ "$got" != "$want" ] || [ "$status" -ne 0 ]; then
    printf 'FAIL: %s (exit=%s)\n---got---\n%s\n---want---\n%s\n' "$label" "$status" "$got" "$want"
    fails=$((fails + 1))
  fi
}

contains() { # contains <needle> <label> [args...]
  local want=$1 label=$2 got status
  shift 2
  got=$(bash "$HC" "$@" 2>/dev/null)
  status=$?
  if [ "$status" -ne 0 ] || [ "${got#*"$want"}" = "$got" ]; then
    printf 'FAIL: %s (exit=%s)\n---missing---\n%s\n---in---\n%s\n' \
      "$label" "$status" "$want" "$got"
    fails=$((fails + 1))
  fi
}

check "$OK" 'no args'
check '' '--quiet' --quiet
check "$USAGE" '--help' --help
check "$USAGE" '--help --quiet' --help --quiet
check "$USAGE" '--quiet --help' --quiet --help
check "$OK" 'unknown flag ignored' --bogus

for name in $NAMES; do
  contains "$name" "--help names $name" --help
done

# All ten names in one run's output.
help_out=$(bash "$HC" --help 2>/dev/null)
missing=
for name in $NAMES; do
  [ "${help_out#*"$name"}" = "$help_out" ] && missing="$missing $name"
done
if [ -n "$missing" ]; then
  printf 'FAIL: --help lists all ten check names\n---missing---\n%s\n' "$missing"
  fails=$((fails + 1))
fi

# --list-checks prints one name per line and nothing else.
listed=$(bash "$HC" --list-checks 2>/dev/null)
want_listed=$LABELS
if [ "$listed" != "$want_listed" ]; then
  printf 'FAIL: --list-checks\n---got---\n%s\n---want---\n%s\n' "$listed" "$want_listed"
  fails=$((fails + 1))
fi

# --summary prints one name: outcome line per check, then the success line.
summary_out=$(bash "$HC" --summary 2>/dev/null)
for name in $NAMES; do
  case "$summary_out" in
    *"$name: ok"*) ;;
    *) printf 'FAIL: --summary omits %s\n' "$name"; fails=$((fails + 1)) ;;
  esac
done
case "$summary_out" in
  *"$OK") ;;
  *) printf 'FAIL: --summary does not end with the success line\n'; fails=$((fails + 1)) ;;
esac

# --timing prints an elapsed line, and composes with --json and --quiet.
contains 'healthchecks:' '--timing' --timing
contains '"timings":{"healthchecks":' '--timing --json' --timing --json
check '' '--timing --quiet' --timing --quiet

# --strict rejects an unrecognised flag; on its own it changes nothing.
strict_out=$(bash "$HC" --strict --nonsense 2>&1)
strict_status=$?
if [ "$strict_status" -ne 2 ] || [ "${strict_out#*unknown flag}" = "$strict_out" ]; then
  printf 'FAIL: --strict --nonsense (exit=%s)\n---got---\n%s\n' "$strict_status" "$strict_out"
  fails=$((fails + 1))
fi
check "$OK" '--strict alone' --strict

[ "$fails" -eq 0 ] || exit 1
printf 'all checks passed\n'