#!/usr/bin/env bash
# Helmut installer — installs the Helmut skill for Claude Code and/or the Codex prompt.
#
# Usage:
#   curl -fsSL https://git.epod.dev/erhan/helmut/main/install.sh | bash
#   curl -fsSL https://git.epod.dev/erhan/helmut/main/install.sh | bash -s -- --claude-only
#   curl -fsSL https://git.epod.dev/erhan/helmut/main/install.sh | bash -s -- --codex-only

set -euo pipefail

# Defaults: install both.
INSTALL_CLAUDE=1
INSTALL_CODEX=1

for arg in "$@"; do
  case "$arg" in
    --claude-only) INSTALL_CODEX=0 ;;
    --codex-only)  INSTALL_CLAUDE=0 ;;
    -h|--help)
      cat <<'EOF'
Helmut installer

Options:
  --claude-only   Install only the Claude Code skill
  --codex-only    Install only the Codex prompt
  -h, --help      Show this help

Without flags, installs for both.
EOF
      exit 0
      ;;
    *)
      echo "Unknown argument: $arg" >&2
      exit 1
      ;;
  esac
done

# Source this repo. When piped via curl, default to the canonical raw URL.
# Override with HELMUT_RAW_BASE for forks / mirrors.
RAW_BASE="${HELMUT_RAW_BASE:-https://git.epod.dev/erhan/helmut/main}"

fetch() {
  local url="$1"
  local dest="$2"
  mkdir -p "$(dirname "$dest")"
  if command -v curl >/dev/null 2>&1; then
    curl -fsSL "$url" -o "$dest"
  elif command -v wget >/dev/null 2>&1; then
    wget -q "$url" -O "$dest"
  else
    echo "Need curl or wget to install." >&2
    exit 1
  fi
}

if [[ "$INSTALL_CLAUDE" -eq 1 ]]; then
  CLAUDE_DIR="$HOME/.claude/skills/helmut"
  echo "Installing Claude Code skill -> $CLAUDE_DIR/SKILL.md"
  fetch "$RAW_BASE/SKILL.md" "$CLAUDE_DIR/SKILL.md"
fi

if [[ "$INSTALL_CODEX" -eq 1 ]]; then
  CODEX_DIR="$HOME/.codex/prompts"
  echo "Installing Codex prompt    -> $CODEX_DIR/helmut.md"
  fetch "$RAW_BASE/codex/helmut.md" "$CODEX_DIR/helmut.md"
fi

cat <<'EOF'

Done.

Claude Code: restart your session once so the new skill is picked up,
             then address Helmut by name — "helmut?", "helmut take a look", etc.
Codex:       type /helmut in a session.

Helmut does not say hello.
EOF