Update LineageOS and Magisk from PC with ADB sideload

los-update.sh

#! /usr/bin/env bash

set -euo pipefail

[[ -v 1 ]] || {
  echo "Update LineageOS and Magisk from PC with ADB sideload"
  echo "Usage: $(basename -- "$0") <device>"
  echo "e.g.   $(basename -- "$0") beryllium"
  exit 1
}

DEVICE="$1"
BASE_DIR="${HOME}/Downloads"
dependencies=( "adb" "aria2c" "curl" "jq" "sha256sum" )

# text decoration utilities
# shellcheck disable=SC2015
{
  normal=$(tput sgr0 ||:)
  bold=$(tput bold ||:)
  info_msg="$(tput setab 33 && tput setaf 231 ||:)$bold" # blue bg, white text
  warn_msg="$(tput setab 220 && tput setaf 16 ||:)$bold" # yellow bg, black text
  err_msg="$(tput setab 160 && tput setaf 231 ||:)$bold" # red bg, white text
  accent="$(tput setab 238 && tput setaf 231 ||:)$bold" # gray bg, white text
}

_echo() {
  # unset formatting after output
  echo -e "${*} $normal"
}

ask() {
  while echo; do
    # `< /dev/tty` is required to be able to run via pipe: cat x.sh | bash
    read -rp "${warn_msg} $* ${accent} + or - ${normal} " response < /dev/tty || { echo "No tty"; exit 1; }
    case "$response" in
      "+") return 0 ;;
      "-") return 1 ;;
    esac
  done
}

clean() {
  popd > /dev/null || :
  ask "Cleanup?" || return
  rm -rf "$OTA_DIR"
}

check_dependencies() {
  for i in "$@"; do
    command -v "$i" &> /dev/null || {
      _echo >&2 "${accent} $i ${err_msg} required"
      exit 1
    }
  done
}

boot_sideload_mode() {
  adb -d reboot sideload || :
  _echo "\n${warn_msg} If your device didn't reboot into ADB sideload mode automatically"
  _echo "${warn_msg} Put your device into ADB sideload mode: ${normal} ${accent} Apply update ${normal} → ${accent} Apply from ADB"
  ask "Enter ${accent} + ${warn_msg} when device will be in ADB sideload mode or ${accent} - ${warn_msg} to cancel" \
    || exit
}

update_los() {
  local filename filesize

  _echo "\n${info_msg} Updating LineageOS"

  get_build_info() {
    jq -r ".$*" <<< "$build_data"
  }

  build_data="$(jq -r '.files[] | select(.type == "nightly")' <<< "$LOS_BUILD_JSON")"
  filename="$(get_build_info filename)"
  filesize="$(get_build_info 'size / pow(1024; 2) | floor | tostring')"

  _echo "\n${info_msg} Downloading"
  _echo " $filename ($filesize MB)"
  aria2c --allow-overwrite -c -x 4 -V --checksum=sha-256="$(get_build_info sha256)" "$(get_build_info url)"

  _echo "\n${info_msg} Flashing"
  _echo " * Connect your device to PC"
  _echo " * Make sure USB debugging is enabled"
  _echo " * Prepare to reboot into ADB sideload mode"
  ask "Proceed?" || exit

  boot_sideload_mode
  adb -d sideload "$filename"
}

update_magisk() {
  local release_api_url release_dl_url_base ver

  _echo "\n${info_msg} Updating Magisk"

  _echo "\n${info_msg} Downloading"
  release_api_url="https://api.github.com/repos/topjohnwu/Magisk/releases"
  release_dl_url_base="https://github.com/topjohnwu/Magisk/releases"
  ver="$(curl -fsSL "$release_api_url" | jq -r '.[].tag_name' | rg -m 1 '^v')"

  aria2c --allow-overwrite -c -x 4 -o magisk.zip "${release_dl_url_base}/download/${ver}/Magisk-${ver}.apk"

  _echo "\n${info_msg} Flashing"
  boot_sideload_mode
  _echo "\n${warn_msg} Tap ${accent} Yes ${warn_msg} on ${err_msg} Signature verification failed ${warn_msg} error"
  adb -d sideload magisk.zip
}

main() {
  local LOS_BUILD_JSON

  check_dependencies "${dependencies[@]}"
  LOS_BUILD_JSON="$(curl -fsSL "https://download.lineageos.org/api/v2/devices/$DEVICE/builds" | jq -r '.[0]')"

  LOS_VER="$(jq -r ".version" <<< "$LOS_BUILD_JSON")"
  LOS_DATE="$(jq -r ".date" <<< "$LOS_BUILD_JSON")"
  OTA_DIR="${BASE_DIR}/LOS-${DEVICE}/OTA-${LOS_VER}-${LOS_DATE}"

  _echo "${info_msg} Device  ${normal} $DEVICE"
  _echo "${info_msg} Version ${normal} $LOS_VER / $LOS_DATE"

  ask "Proceed?" || exit

  mkdir -p "$OTA_DIR"
  pushd "$OTA_DIR" > /dev/null

  update_los
  update_magisk

  while ask "Need to install additional packages?"; do
    # shellcheck disable=SC2012
    pkg="$(ls -t -- *.zip | fzf +m --no-info --header-first --header "Select package")"
    [[ -f $pkg ]] || { echo " No file, skipping"; continue; }
    boot_sideload_mode
    adb -d sideload "$pkg"
  done

  ask "Installation finished, reboot?" && adb -d reboot
}

trap clean EXIT

main