#!/usr/bin/env bash
#
# development/tests/test-coc-register-vim.sh — programmatic coc.nvim
# registration for the Vim client.
#
# nuwiki#lsp#start() registers the language server with coc via coc#config so
# users don't hand-maintain coc-settings.json. This harness stubs coc#config
# (a real autoload/coc.vim on the runtimepath, since Vim's exists('*coc#config')
# goes through the autoload mechanism) to record what nuwiki injects, then runs
# test-coc-register-vim.vim and asserts the payload.
#
# 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[coc-register]\033[0m %s\n' "$*"; }

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

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

# Stub coc#config as a real autoload function so exists('*coc#config') resolves
# it. It records the last call into g:_recorded for the test to assert.
mkdir -p "$TMP/stub/autoload"
cat > "$TMP/stub/autoload/coc.vim" <<'EOF'
function! coc#config(section, value) abort
  let g:_recorded = {'section': a:section, 'value': deepcopy(a:value)}
endfunction
EOF

OUT="$TMP/coc.out"
VIMRC="$TMP/vimrc"
cat > "$VIMRC" <<EOF
set nocompatible
" Stub dir first so its autoload/coc.vim is the one that resolves.
let &runtimepath = '$TMP/stub' . ',' . '$REPO_ROOT' . ',' . &runtimepath
" coc.nvim defines :CocConfig at startup; nuwiki uses that as the reliable
" 'coc is present' signal. Stub it so the coc branch is taken.
command! -nargs=0 CocConfig echo ''
EOF

log 'running Vim coc-registration harness…'
NUWIKI_COC_OUT="$OUT" \
  timeout 30 vim -e -s -u "$VIMRC" \
    -c "source $REPO_ROOT/development/tests/test-coc-register-vim.vim" \
    </dev/null >"$TMP/vim.log" 2>&1 || true

if [[ ! -f "$OUT" ]]; then
  echo 'coc-registration harness produced no output' >&2
  echo '--- vim log ---' >&2
  cat "$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 'coc registration OK ✓'
exit 0