install.sh

#!/usr/bin/env bash
#
# DNeyeS installer (Linux & macOS)
# Sets up a virtualenv, installs dependencies, and creates a global `dneyes` command.
#
set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
VENV_DIR="$SCRIPT_DIR/venv"
ENTRYPOINT="$SCRIPT_DIR/dneyes.py"

#  Colors 
GREEN="\033[92m"; YELLOW="\033[93m"; RED="\033[91m"; BOLD="\033[1m"; RESET="\033[0m"

info()  { echo -e "${BOLD}[*]${RESET} $1"; }
ok()    { echo -e "${GREEN}[+]${RESET} $1"; }
warn()  { echo -e "${YELLOW}[!]${RESET} $1"; }
fail()  { echo -e "${RED}[x]${RESET} $1" >&2; exit 1; }
# ---------

OS="$(uname -s)"
case "$OS" in
    Linux|Darwin) ;;
    *) fail "Unsupported OS: $OS (this installer targets Linux and macOS only)";;
esac

command -v python3 >/dev/null 2>&1 || fail "python3 is not installed."
[ -f "$ENTRYPOINT" ] || fail "Cannot find dneyes.py next to this script."

info "Creating virtual environment..."
python3 -m venv "$VENV_DIR"

info "Installing dependencies..."
"$VENV_DIR/bin/pip" install --quiet --upgrade pip
if [ -f "$SCRIPT_DIR/requirements.txt" ]; then
    "$VENV_DIR/bin/pip" install --quiet -r "$SCRIPT_DIR/requirements.txt"
else
    "$VENV_DIR/bin/pip" install --quiet dnspython requests
fi
ok "Dependencies installed."

if [ -w "/usr/local/bin" ]; then
    BIN_DIR="/usr/local/bin"
else
    BIN_DIR="$HOME/.local/bin"
    mkdir -p "$BIN_DIR"
fi
LAUNCHER="$BIN_DIR/dneyes"

info "Creating launcher at $LAUNCHER ..."
cat > "$LAUNCHER" <<EOF
#!/usr/bin/env bash
exec "$VENV_DIR/bin/python" "$ENTRYPOINT" "\$@"
EOF
chmod +x "$LAUNCHER"
ok "Launcher installed."

case ":$PATH:" in
    *":$BIN_DIR:"*) ;;
    *) warn "$BIN_DIR is not on your PATH. Add this to your shell profile:"
       echo -e "       ${BOLD}export PATH=\"$BIN_DIR:\$PATH\"${RESET}";;
esac

echo
ok "Done! Run it with: ${BOLD}dneyes${RESET}"
echo -e "     Example: ${BOLD}dneyes -qs example.com -ps${RESET}"