getappx - Get URLs of .appx files from Microsoft Store.

getappx.sh

#!/usr/bin/env bash
# getappx - Get URLs of .appx files from Microsoft Store.
# Copyright 2020 (c) Koichi OKADA. All rights reserved.
# This script is destributed under the MIT license.

source hhs.bash 0.2.0

function fetch_post () # URL POSTDATA
{
  local cachedir=/tmp/.cache
  local url="${1}??${2}"
  local hash="$(echo "$url" | sha512sum | awk '{printf($1)}')"
  local cache="$cachedir/$hash"
  [ -d "$cachedir" ] || mkdir -p "$cachedir" || { error "can not make cachedir: $cachedir"; exit 1;} 
  if [ ! -e "$cache" ]; then
    wget https://store.rg-adguard.net/api/GetFiles --post-data="$post" -qO "$cache"
    printf "%s\t%s\n" "$hash" "$url" >> "$cachedir/list.txt"
  fi
  cat "$cache"
}

function get_appxlist ()
{
  sed -E 's@<a[^>]*>@\n\0@g;s@</a>@\0\n@g' | \
  grep '<a' |\
  sed -E 's/.*href="([^"]*)".*>([^>]*)<.*/\2\t\1/g'
}

function optparse_getappx ()
{
  case "$1" in
  -l|--lang) # <LANG>
    # Set language. (default: ja)
    nparams 1
    optset LANG "$2"
    ;;
  -r|--ring) # <RING>
    # Set ring. RING is one of WIF, WIS, RP of Retail. (default: PR)
    nparams 1
    optset RING "$2"
    ;;
  *) return 1 ;;
  esac
}

function getappx () # <URL>|<ProductID>
#   Get URLs of .appx files from Microsoft Store.
#   This script uses https://store.rg-adguard.net/.
{
  local ProductID="$1"
  ProductID="${ProductID/\?*/}"
  ProductID="${ProductID//*\//}"

  local post="type=ProductId&url=${ProductID}&ring=${OPT_RING:-RP}&lang=${OPT_LANG:-ja}"

  fetch_post https://store.rg-adguard.net/api/GetFiles "$post" | \
  get_appxlist
}

invoke_command "$@"