#!/usr/bin/env bash
#
# development/tests/test-vars-vim.sh — exercises the vimwiki compatibility
# shim (autoload/vimwiki/vars.vim) that third-party plugins (vimwiki-sync,
# vim-zettel) call via vimwiki#vars#get_wikilocal.
#
# Runs test-vars-vim.vim under headless Vim; that script writes PASS/FAIL
# lines to $NUWIKI_VARS_OUT. Covers per-wiki-index resolution, global
# fallback, out-of-range clamp, the no-index "owning wiki" path (the
# BufRead path that previously raised E121), and the single-wiki shorthand.
#
# Exit code: 0 when every check passes, 1 on any FAIL or missing output.
# Skips (exit 0) when vim is not installed.

set -euo pipefail

REPO_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"

log() { printf '\033[1;34m[vars-vim]\033[0m %s\n' "$*"; }

if ! command -v vim >/dev/null 2>&1; then
  log 'vim not installed — skipping'
  exit 0
fi

TMP="$(mktemp -d -t nuwiki-vars-vim-test-XXXXXX)"
trap 'rm -rf "$TMP"' EXIT

DIR_A="$TMP/wiki_a"
DIR_B="$TMP/wiki_b"
mkdir -p "$DIR_A" "$DIR_B"
printf '= Home =\n' > "$DIR_A/index.wiki"
printf '= B =\n'    > "$DIR_B/index.wiki"

OUT="$TMP/vars.out"

VIMRC="$TMP/vimrc"
cat > "$VIMRC" <<EOF
set nocompatible
let &runtimepath = '$REPO_ROOT' . ',' . &runtimepath
EOF

log 'running Vim vars-shim harness…'
NUWIKI_VARS_OUT="$OUT" \
NUWIKI_VARS_DIR_A="$DIR_A" \
NUWIKI_VARS_DIR_B="$DIR_B" \
  timeout 30 vim -e -s -u "$VIMRC" \
    -c "source $REPO_ROOT/development/tests/test-vars-vim.vim" \
    </dev/null >"$TMP/vim.log" 2>&1 || true

if [[ ! -f "$OUT" ]]; then
  echo 'vars harness produced no output' >&2
  echo '--- vim log ---' >&2
  cat "$TMP/vim.log" >&2 || true
  exit 1
fi

cat "$OUT"
PASSED="$(grep -c '^PASS ' "$OUT" || true)"
FAILED="$(grep -c '^FAIL ' "$OUT" || true)"
echo "SUMMARY: ${PASSED} passed, ${FAILED} failed"

if [[ "$FAILED" -ne 0 ]]; then
  exit 1
fi
log 'vars shim OK ✓'
exit 0