#!/bin/bash
# One-line install of the herdr screensaver for Omarchy:
#   curl -fsSL https://byminyona.com/herdr-screensaver/omarchy.sh | bash
#   curl -fsSL https://byminyona.com/herdr-screensaver/omarchy.sh | bash -s uninstall
# Downloads the release tarball next to this script, checks its SHA-256 (embedded at package time)
# BEFORE touching anything, unpacks it to ~/.local/share/herdr-screensaver and runs its install.sh.
# HERDR_SS_BASE_URL overrides the download location (tests).
set -euo pipefail
TMPD=""

main() {
  local version=1.0.0
  local base="${HERDR_SS_BASE_URL:-https://byminyona.com/herdr-screensaver}"
  local tarball="herdr-screensaver-omarchy-$version.tar.gz"
  local want="7681dde26433db309633c8855bb0d6fdd9616fc7a5733109dac1396e400683a4"
  local data="$HOME/.local/share/herdr-screensaver"
  local action="${1:-install}" got

  case $action in
  uninstall)
    if [ -f "$data/omarchy/install.sh" ]; then
      bash "$data/omarchy/install.sh" uninstall </dev/null
    else
      echo "herdr-screensaver: not installed"
    fi
    return 0
    ;;
  install) ;;
  *) echo "usage: omarchy.sh [install|uninstall]" >&2; return 2 ;;
  esac

  if [ -f "$data/state" ]; then
    echo "herdr-screensaver: already installed; to reinstall run: bash $data/omarchy/install.sh uninstall, then this again"
    return 0
  fi
  case $want in *[!0-9a-f]* | "") echo "herdr-screensaver: this installer has no checksum; refusing" >&2; return 1 ;; esac

  TMPD=$(mktemp -d)
  trap 'rm -rf "$TMPD"' EXIT
  local tmp=$TMPD
  echo "herdr-screensaver: downloading $base/$tarball"
  curl -fsSL "$base/$tarball" -o "$tmp/$tarball"
  if command -v sha256sum >/dev/null 2>&1; then got=$(sha256sum "$tmp/$tarball" | cut -d' ' -f1); else got=$(shasum -a 256 "$tmp/$tarball" | cut -d' ' -f1); fi
  if [ "$got" != "$want" ]; then
    echo "herdr-screensaver: checksum mismatch (got $got, want $want); nothing was changed" >&2
    return 1
  fi
  mkdir -p "$tmp/x"
  tar -xzf "$tmp/$tarball" -C "$tmp/x"
  mkdir -p "$data"
  cp -R "$tmp/x/." "$data/"
  if ! bash "$data/omarchy/install.sh" install </dev/null; then
    rm -rf "$data"
    echo "herdr-screensaver: install failed; removed $data again" >&2
    return 1
  fi
}

main "$@"; exit $?