#!/bin/sh
# Deterministic, context-aware pinentry selector

# 1. Emacs — only when actually inside Emacs
if [ -n "$INSIDE_EMACS" ] && command -v pinentry-emacs >/dev/null 2>&1; then
  exec pinentry-emacs "$@"
fi

# 2. macOS GUI
if [ "$(uname -s)" = "Darwin" ]; then
  if [ -x /opt/homebrew/bin/pinentry-mac ]; then exec /opt/homebrew/bin/pinentry-mac "$@"; fi
  if [ -x /usr/local/bin/pinentry-mac ]; then exec /usr/local/bin/pinentry-mac "$@"; fi
fi

# 3. Linux GUI — only if a GUI session exists
if [ -n "$WAYLAND_DISPLAY" ] || [ -n "$DISPLAY" ]; then
  if command -v pinentry-gnome3 >/dev/null 2>&1; then exec pinentry-gnome3 "$@"; fi
  if command -v pinentry-gtk-2  >/dev/null 2>&1; then exec pinentry-gtk-2 "$@"; fi
  if command -v pinentry-qt    >/dev/null 2>&1; then exec pinentry-qt "$@"; fi
fi

# 4. TTY fallback
if command -v pinentry-curses >/dev/null 2>&1; then
  exec pinentry-curses "$@"
fi

# 5. Last resort
exec pinentry "$@"