#!/usr/bin/env bash
# Toolchain preflight for superfig.
# Exit codes: 0 full path, 1 degraded (no CJK/export), 2 no LaTeX.
set -uo pipefail

QUIET=0
[[ "${1:-}" == "--quiet" ]] && QUIET=1
say() { [[ $QUIET -eq 1 ]] || echo -e "$*"; }

ok=0; warn=0; fail=0; cjk_warn=0; export_warn=0
check() {
  local name="$1"; shift
  if "$@" >/dev/null 2>&1; then say "  ok    $name"; ok=$((ok+1)); return 0
  else say "  MISS  $name"; return 1; fi
}

say "superfig preflight"
say "--- required ---"
check "xelatex"            command -v xelatex            || fail=$((fail+1))
check "standalone.cls"     kpsewhich standalone.cls      || fail=$((fail+1))
check "tikz.sty"           kpsewhich tikz.sty            || fail=$((fail+1))
check "array.sty"          kpsewhich array.sty           || fail=$((fail+1))
check "etoolbox.sty"       kpsewhich etoolbox.sty        || fail=$((fail+1))

say "--- chinese figures ---"
check "ctex.sty"           kpsewhich ctex.sty            || { warn=$((warn+1)); cjk_warn=1; }
check "fandol font"        kpsewhich FandolSong-Regular.otf || { warn=$((warn+1)); cjk_warn=1; }

say "--- raster / vector export ---"
check "pdftocairo"         command -v pdftocairo         || { warn=$((warn+1)); export_warn=1; }

if [[ $fail -gt 0 ]]; then
  say ""
  say "RESULT: no usable LaTeX path."
  say "Fall back to SVG/HTML and state that superfig package guarantees are unavailable."
  exit 2
fi
if [[ $warn -gt 0 ]]; then
  say ""
  say "RESULT: degraded."
  [[ $cjk_warn -eq 1 ]] && say "  - missing ctex/fandol -> English-label figures only."
  [[ $export_warn -eq 1 ]] && say "  - missing pdftocairo -> PDF only, no PNG/SVG."
  exit 1
fi
say ""
say "RESULT: full path available (TikZ + CJK + vector/raster export)."
exit 0