#!/bin/sh
# PURE Donor installer for macOS and Linux: https://purepure.app/deltag
# Usage: curl -fsSL https://fleet.purepure.app/deltag/install.sh | sh
# Without the browser lane (pages that need JavaScript; less disk and memory):
#        curl -fsSL https://fleet.purepure.app/deltag/install.sh | sh -s -- --no-browser
# Everything goes in ~/.pure-donor plus one start-up file; "pure-donor
# uninstall" removes both. The whole script is one function, so a download cut
# short runs nothing.
set -eu

pure_donor_install() {
  MASTER="${PURE_WORK_MASTER_URL:-https://fleet.purepure.app}"
  HOME_DIR="${PURE_DONOR_HOME:-$HOME/.pure-donor}"
  UV_VERSION="0.13.5"

  if [ "$(id -u)" = "0" ] && [ "${PURE_DONOR_ALLOW_ROOT:-0}" != "1" ]; then
    echo "Kør installationen som din almindelige bruger, ikke som root eller med sudo." >&2
    echo "(På en server kan du bruge Docker-udgaven: se $MASTER/deltag)" >&2
    exit 1
  fi
  if ! curl -fsS "$MASTER/deltag/manifest.json" >/dev/null 2>&1; then
    echo "PURE Donor åbner snart. Se $MASTER/deltag" >&2
    exit 1
  fi

  machine="$(uname -m)"
  # A Terminal running under Rosetta reports x86_64 on Apple silicon.
  if [ "$(uname -s)" = Darwin ] && [ "$(sysctl -n hw.optional.arm64 2>/dev/null || echo 0)" = 1 ]; then
    machine=arm64
  fi
  case "$(uname -s)-$machine" in
    Darwin-arm64) asset=aarch64-apple-darwin ;;
    Darwin-x86_64) asset=x86_64-apple-darwin ;;
    Linux-x86_64) asset=x86_64-unknown-linux-gnu ;;
    Linux-aarch64|Linux-arm64) asset=aarch64-unknown-linux-gnu ;;
    *) echo "PURE Donor understøtter ikke denne computer ($(uname -sm))." >&2; exit 1 ;;
  esac
  case "$asset" in
    aarch64-apple-darwin) sum=743f85035a1996ecb350659e01cd9faea9709829be09b1b4b03c73eaf3c9cd73 ;;
    x86_64-apple-darwin) sum=b0f52b0e3945b4107d89024ea38e625683011fbfc05a0d98f9fa2d6dcee28c66 ;;
    x86_64-unknown-linux-gnu) sum=f68d291c75783122dad58ab77def0e13f3233f358731db5d6d7e8715603b928f ;;
    aarch64-unknown-linux-gnu) sum=4bb69cf95ed13f23713bb7bc09f241896ea0c75b7c557e615a20604b82f9c403 ;;
  esac

  mkdir -p "$HOME_DIR/bin" "$HOME_DIR/downloads"
  chmod 700 "$HOME_DIR"
  echo "==> Henter installationsværktøjet uv $UV_VERSION"
  archive="$HOME_DIR/downloads/uv-$asset.tar.gz"
  curl -fsSL "https://github.com/astral-sh/uv/releases/download/$UV_VERSION/uv-$asset.tar.gz" -o "$archive"
  if command -v sha256sum >/dev/null 2>&1; then
    got="$(sha256sum "$archive" | cut -d ' ' -f 1)"
  else
    got="$(shasum -a 256 "$archive" | cut -d ' ' -f 1)"
  fi
  if [ "$got" != "$sum" ]; then
    echo "Værktøjet kunne ikke verificeres; intet er installeret." >&2
    rm -f "$archive"; exit 1
  fi
  tar -xzf "$archive" -C "$HOME_DIR/downloads"
  mv "$HOME_DIR/downloads/uv-$asset/uv" "$HOME_DIR/bin/uv"
  rm -rf "$archive" "$HOME_DIR/downloads/uv-$asset"

  # Python, uv's cache and nothing else outside the donor home.
  export UV_PYTHON_INSTALL_DIR="$HOME_DIR/python" UV_CACHE_DIR="$HOME_DIR/cache"
  export UV_MANAGED_PYTHON=1 UV_NO_CONFIG=1
  echo "==> Henter Python 3.12"
  "$HOME_DIR/bin/uv" python install --quiet --no-bin 3.12
  python="$("$HOME_DIR/bin/uv" python find 3.12)"

  echo "==> Henter PURE Donor"
  curl -fsSL "$MASTER/deltag/launcher.py" -o "$HOME_DIR/launcher.py"
  browser=""
  [ "${PURE_DONOR_BROWSER:-1}" = "0" ] && browser="--no-browser"
  PURE_DONOR_HOME="$HOME_DIR" PURE_WORK_MASTER_URL="$MASTER" \
    "$python" "$HOME_DIR/launcher.py" install $browser "$@"
}

pure_donor_install "$@"