Hey email snap to Arch package update script

generate_hey_email_pkgbuild.rb

require "digest"
require "json"
require "net/http"
require "pathname"
require "shellwords"
require "tempfile"

MAX_REDIRECTS = 10
URL = URI("https://api.snapcraft.io/v2/snaps/info/hey-mail")
HEADERS = { "Snap-Device-Series" => "16" }

info = JSON.parse(Net::HTTP.get(URL, HEADERS))

channel = info["channel-map"].find do |channel|
  channel.dig("channel", "architecture") == "amd64" &&
    channel.dig("channel", "risk") == "stable" &&
    channel.dig("channel", "track") == "latest"
end

if channel.nil?
  $stderr.puts "Channel not found"
  $stderr.puts info
  exit 1
end

version = channel["version"]
download_url = channel["download"]["url"]
snapname = Pathname.new(URI(download_url).path).basename.to_s
sha256sum = ""
sha512sum = ""

sha256 = Digest::SHA256.new
sha512 = Digest::SHA512.new

running = true
redirect_count = 0
current_download_url = download_url

while running do
  if redirect_count > MAX_REDIRECTS
    $stderr.puts "Too many redirects while downloading the file"
    exit 2
  end

  puts "Attempting to download #{current_download_url}"

  Net::HTTP.get_response(URI(current_download_url)) do |response|
    if response.is_a?(Net::HTTPRedirection)
      puts "Redirecting to #{response["location"]}"
      redirect_count += 1
      current_download_url = response["location"]
    elsif response.is_a?(Net::HTTPSuccess)
      puts "Downloading #{current_download_url}"

      response.read_body do |chunk|
        sha256 << chunk
        sha512 << chunk
      end

      running = false
    end
  end
end

sha256sum = sha256.hexdigest
sha512sum = sha512.hexdigest

pkgbuild = format(
  DATA.read,
  version: Shellwords.shellescape(version),
  snapname: Shellwords.shellescape(snapname),
  download_url: Shellwords.shellescape(download_url),
  sha256sum: Shellwords.shellescape(sha256sum),
  sha512sum: Shellwords.shellescape(sha512sum)
)

File.write("PKGBUILD", pkgbuild)

puts "Done!"
puts "Run `makepkg -si` to build and install the package"

__END__
# This file was auto-generated using update.rb
# Do not make manual modifications to it use update.rb instead
pkgname=hey-mail-bin
pkgver=%{version}
pkgrel=1
pkgdesc="Hey Mail desktop app"
url="https://hey.com/apps/"
arch=('x86_64')
license=('Proprietary')
depends=('c-ares' 'ffmpeg' 'gtk3' 'http-parser' 'libevent' 'libvpx' 'libxslt' 'libxss' 'minizip' 'nss' 're2' 'snappy' 'libnotify' 'libappindicator-gtk2' 'libappindicator-gtk3')
makedepends=('squashfs-tools')
provides=('hey-mail')
conflicts=('hey-mail')
SNAPNAME="%{snapname}"
source=("%{download_url}")

sha256sums=('%{sha256sum}')
sha512sums=('%{sha512sum}')

build() {
	unsquashfs -force -dest root $SNAPNAME
}

package() {
	install -d "$pkgdir/usr/bin"
	install -d "$pkgdir/opt/hey-mail"
	install -d "$pkgdir/usr/share/applications"
	cp -r root/* "$pkgdir/opt/hey-mail"
	rm -rf "$pkgdir/opt/hey-mail/usr"
	rm -rf "$pkgdir/opt/hey-mail/gnome-platform"
	rm -rf "$pkgdir/opt/hey-mail/lib"
	rm -rf "$pkgdir/opt/hey-mail/libvulkan.so"
	rm -rf "$pkgdir/opt/hey-mail/libGLESv2.so"
	rm -rf "$pkgdir/opt/hey-mail/libEGL.so"
	ln -s /opt/hey-mail/hey-mail "$pkgdir/usr/bin/hey-mail"
	sed "s/\${SNAP}/\/opt\/hey-mail/" root/meta/gui/hey-mail.desktop > "$pkgdir/usr/share/applications/hey-mail.desktop"
}