#!/bin/sh
# Tests for bin/check-surfaces.
#
# The repo ships to three surfaces — the Claude Code plugin, the symlinked
# library (Crush/Pi/OpenCode) and claude.ai, which has no fetch path at all —
# and used to treat every skill as belonging to all of them. gitea-ci,
# playwright and web-shot cannot fire in a chat surface; a flat mirror installs
# skills that can never trigger and degrades selection for the ones that can
# (#29).
#
# The risk this gate exists for: a wrong `surfaces:` value silently removes a
# skill from a harness rather than erroring. So presence is not enough — values
# are validated against the allowed set.

set -u

ROOT=$(CDPATH= cd -- "$(dirname -- "$0")/.." && pwd)
SUT="$ROOT/bin/check-surfaces"

pass=0
fail=0
WORK=${TMPDIR:-/tmp}/check_surfaces_test.$$

if [ ! -f "$SUT" ]; then
  printf 'FAIL: %s does not exist\n' "$SUT"
  exit 1
fi

cleanup() { rm -rf "$WORK"; }
trap cleanup EXIT INT TERM

# fixture <name> <surfaces-line-or-empty> — a checkout holding one skill.
fixture() {
  _f="$WORK/$1"
  mkdir -p "$_f/skills/alpha"
  if [ -n "$2" ]; then
    printf -- '---\nname: alpha\n%s\ndescription: a\n---\n' "$2" > "$_f/skills/alpha/SKILL.md"
  else
    printf -- '---\nname: alpha\ndescription: a\n---\n' > "$_f/skills/alpha/SKILL.md"
  fi
  printf '%s' "$_f"
}

# expect <rc> <label> <fixture> [needle]
expect() {
  _want=$1; _label=$2; _fx=$3; _needle=${4:-}
  _out=$(sh "$SUT" "$_fx" 2>&1); _rc=$?
  if [ "$_rc" -ne "$_want" ]; then
    fail=$((fail + 1)); printf '  FAIL %s (want rc=%s got %s)\n%s\n' "$_label" "$_want" "$_rc" "$_out"; return
  fi
  if [ -n "$_needle" ] && ! printf '%s' "$_out" | grep -q "$_needle"; then
    fail=$((fail + 1)); printf '  FAIL %s (rc ok, report never says %s)\n%s\n' "$_label" "$_needle" "$_out"; return
  fi
  pass=$((pass + 1)); printf '  ok   %s\n' "$_label"
}

expect 0 'the default pair is accepted'        "$(fixture ok 'surfaces: [claude-code, library]')"
expect 0 'all three surfaces are accepted'     "$(fixture three 'surfaces: [claude-code, library, chat]')"
expect 0 'a single surface is accepted'        "$(fixture one 'surfaces: [chat]')"
expect 1 'a missing surfaces field fails'      "$(fixture missing '')" 'alpha'
expect 1 'an unknown surface value fails'      "$(fixture bogus 'surfaces: [claude-code, desktop]')" 'desktop'
expect 1 'an empty surfaces list fails'        "$(fixture empty 'surfaces: []')" 'alpha'

printf '\ncheck_surfaces: %d passed, %d failed\n' "$pass" "$fail"
[ "$fail" -eq 0 ]