passgen/install.sh at master · flathead/passgen · GitHub

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#!/usr/bin/env bash
set -euo pipefail

# passgen installer
# Usage: curl -fsSL https://raw.githubusercontent.com/flathead/passgen/master/install.sh | bash

REPO="https://github.com/flathead/passgen.git"
CLONE_DIR="${HOME}/.local/share/passgen"
BIN_DIR="${HOME}/.local/bin"
BIN_LINK="${BIN_DIR}/passgen"
CONFIG_DIR="${HOME}/.config/passgen"

# Colors
if [[ -t 1 ]]; then
  RST=$'\033[0m'; BOLD=$'\033[1m'; DIM=$'\033[2m'
  GREEN=$'\033[32m'; RED=$'\033[31m'; CYAN=$'\033[36m'
else
  RST='' BOLD='' DIM='' GREEN='' RED='' CYAN=''
fi

info()  { printf '%s[*]%s %s\n' "$CYAN"  "$RST" "$1"; }
ok()    { printf '%s[+]%s %s\n' "$GREEN" "$RST" "$1"; }
err()   { printf '%s[-]%s %s\n' "$RED"   "$RST" "$1" >&2; }

# --- checks ---
check_deps() {
  local missing=()
  for cmd in bash base64 sha256sum shuf tr git; do
    if ! command -v "$cmd" &>/dev/null; then
      missing+=("$cmd")
    fi
  done
  if [[ ${#missing[@]} -gt 0 ]]; then
    err "Missing dependencies: ${missing[*]}"
    err "Install them with your package manager and retry."
    exit 1
  fi
}

check_bash_version() {
  local ver
  ver="${BASH_VERSINFO[0]}"
  if [[ "$ver" -lt 4 ]]; then
    err "Bash 4+ required (found: ${BASH_VERSION})"
    err "On macOS: brew install bash"
    exit 1
  fi
}

# --- install ---
do_install() {
  info "passgen installer"
  echo ""

  check_bash_version
  check_deps

  mkdir -p "$BIN_DIR"

  if [[ -d "$CLONE_DIR" ]]; then
    info "Updating existing installation..."
    git -C "$CLONE_DIR" pull --ff-only
  else
    info "Cloning passgen..."
    git clone "$REPO" "$CLONE_DIR"
  fi

  chmod +x "${CLONE_DIR}/passgen"

  # Create symlink
  ln -sf "${CLONE_DIR}/passgen" "$BIN_LINK"

  echo ""
  ok "Installed: ${CLONE_DIR}/passgen"
  ok "Symlink:   ${BIN_LINK} -> ${CLONE_DIR}/passgen"

  # Check PATH
  if ! echo "$PATH" | tr ':' '\n' | grep -qx "$BIN_DIR"; then
    echo ""
    info "Add ${BOLD}${BIN_DIR}${RST} to your PATH:"
    echo ""
    echo "  ${DIM}# Add to ~/.bashrc or ~/.zshrc:${RST}"
    echo "  export PATH=\"\${HOME}/.local/bin:\${PATH}\""
    echo ""
  fi

  echo ""
  ok "Run ${BOLD}passgen${RST} to start"
  info "Update anytime: ${DIM}passgen-update${RST} or ${DIM}cd ${CLONE_DIR} && git pull${RST}"
}

# --- uninstall ---
do_uninstall() {
  info "Uninstalling passgen..."

  if [[ -L "$BIN_LINK" ]]; then
    rm -f "$BIN_LINK"
    ok "Removed symlink ${BIN_LINK}"
  elif [[ -f "$BIN_LINK" ]]; then
    rm -f "$BIN_LINK"
    ok "Removed ${BIN_LINK}"
  fi

  if [[ -d "$CLONE_DIR" ]]; then
    rm -rf "$CLONE_DIR"
    ok "Removed ${CLONE_DIR}"
  fi

  if [[ -d "$CONFIG_DIR" ]]; then
    rm -rf "$CONFIG_DIR"
    ok "Removed config ${CONFIG_DIR}"
  fi

  ok "Done"
}

# --- main ---
case "${1:-}" in
  --uninstall) do_uninstall ;;
  *)           do_install ;;
esac