install.sh

#!/usr/bin/env sh
# install.sh — one-line installer for sisyphus
#
#   curl -fsSL https://raw.githubusercontent.com/ignavan39/sisyphus/master/install.sh | sh
#
# Options (env vars):
#   SISYPHUS_VERSION   pin a specific version, e.g. v1.2.0  (default: latest)
#   SISYPHUS_INSTALL   install directory                     (default: /usr/local/bin)
#   NO_COLOR           disable coloured output

set -e

if [ -t 1 ] && [ -z "${NO_COLOR:-}" ]; then
  BOLD="\033[1m"; DIM="\033[2m"; YELLOW="\033[33m"
  GREEN="\033[32m"; RED="\033[31m"; CYAN="\033[36m"; RESET="\033[0m"
else
  BOLD=""; DIM=""; YELLOW=""; GREEN=""; RED=""; CYAN=""; RESET=""
fi

info()    { printf "  ${CYAN}•${RESET} %s\n" "$1"; }
success() { printf "  ${GREEN}✓${RESET} ${BOLD}%s${RESET}\n" "$1"; }
warn()    { printf "  ${YELLOW}!${RESET} %s\n" "$1"; }
error()   { printf "  ${RED}✗${RESET} ${BOLD}%s${RESET}\n" "$1" >&2; exit 1; }

printf "\n"
printf "  ${YELLOW}${BOLD}⟳  S I S Y P H U S${RESET}\n"
printf "  ${DIM}the terminal myth — installer${RESET}\n"
printf "\n"

need() {
  if ! command -v "$1" >/dev/null 2>&1; then
    error "required command not found: $1 — please install it and retry"
  fi
}
need curl
need tar

OS="$(uname -s)"
case "$OS" in
  Linux)   OS_KEY="linux"   ;;
  Darwin)  OS_KEY="darwin"  ;;
  *)       error "unsupported operating system: $OS (Windows users: see README for .exe download)" ;;
esac

ARCH="$(uname -m)"
case "$ARCH" in
  x86_64 | amd64)          ARCH_KEY="amd64" ;;
  aarch64 | arm64 | armv8) ARCH_KEY="arm64" ;;
  *)                        error "unsupported architecture: $ARCH" ;;
esac

info "detected platform: ${OS_KEY}/${ARCH_KEY}"

REPO="ignavan39/sisyphus"

if [ -n "${SISYPHUS_VERSION:-}" ]; then
  VERSION="$SISYPHUS_VERSION"
  info "using pinned version: ${VERSION}"
else
  info "fetching latest release…"
  VERSION="$(curl -fsSL "https://api.github.com/repos/${REPO}/releases/latest" \
    | grep '"tag_name"' | sed 's/.*"tag_name": *"\(.*\)".*/\1/')"
  [ -n "$VERSION" ] || error "could not determine latest version — check your internet connection"
  info "latest version: ${VERSION}"
fi

BINARY_NAME="sisyphus-${OS_KEY}-${ARCH_KEY}"
ARCHIVE="${BINARY_NAME}.tar.gz"
DOWNLOAD_URL="https://github.com/${REPO}/releases/download/${VERSION}/${ARCHIVE}"

INSTALL_DIR="${SISYPHUS_INSTALL:-/usr/local/bin}"

if [ ! -w "$INSTALL_DIR" ] && [ -z "${SISYPHUS_INSTALL:-}" ]; then
  INSTALL_DIR="$HOME/.local/bin"
  warn "/usr/local/bin not writable — installing to ${INSTALL_DIR}"
  mkdir -p "$INSTALL_DIR"
fi

[ -d "$INSTALL_DIR" ] || error "install directory does not exist: $INSTALL_DIR"
[ -w "$INSTALL_DIR" ] || error "install directory is not writable: $INSTALL_DIR (try: sudo SISYPHUS_INSTALL=$INSTALL_DIR sh install.sh)"

info "install directory: ${INSTALL_DIR}"

TMP_DIR="$(mktemp -d)"
trap 'rm -rf "$TMP_DIR"' EXIT

info "downloading ${ARCHIVE}…"
curl -fsSL --progress-bar "$DOWNLOAD_URL" -o "${TMP_DIR}/${ARCHIVE}" \
  || error "download failed — release may not exist yet: ${DOWNLOAD_URL}"

info "extracting…"
tar -xzf "${TMP_DIR}/${ARCHIVE}" -C "$TMP_DIR"

EXTRACTED="${TMP_DIR}/${BINARY_NAME}"
[ -f "$EXTRACTED" ] || EXTRACTED="${TMP_DIR}/sisyphus"
[ -f "$EXTRACTED" ] || error "could not find binary after extraction — unexpected archive layout"

chmod +x "$EXTRACTED"
mv "$EXTRACTED" "${INSTALL_DIR}/sisyphus"

printf "\n"
success "sisyphus ${VERSION} installed → ${INSTALL_DIR}/sisyphus"

case ":${PATH}:" in
  *":${INSTALL_DIR}:"*) ;;
  *)
    printf "\n"
    warn "${INSTALL_DIR} is not in your PATH. Add this to your shell config:"
    printf "\n"
    printf "    ${DIM}export PATH=\"${INSTALL_DIR}:\$PATH\"${RESET}\n"
    printf "\n"
    ;;
esac

printf "\n"
printf "  ${YELLOW}${BOLD}Run it:${RESET}  sisyphus\n"
printf "  ${DIM}\"One must imagine Sisyphus happy.\" — Albert Camus${RESET}\n"
printf "\n"