# Maintainer:
# Contributor: Alexey Peschany <archlinux at sandboiii dot xyz>

# options
if [ -n "$_srcinfo" ] || [ -n "$_pkgver" ]; then
  : ${_autoupdate:=false}
else
  : ${_autoupdate:=true}
fi

: ${_pkgtype:=-bin}

# basic info
_pkgname="mercury-browser"
pkgname="$_pkgname${_pkgtype:-}"
pkgver=123.0.1
pkgrel=1
pkgdesc="Compiler optimized, private Firefox fork"
url="https://github.com/Alex313031/Mercury"
license=('MPL-2.0')
arch=('x86_64')

# main package
_main_package() {
  _update_version

  options=('!emptydirs' '!strip')
  install="$_pkgname.install"

  : ${_dl_filename:=${_pkgname}_${_pkgver:?}_SSE3.deb}
  : ${_dl_url:=$url/releases/download/v.$_pkgver/$_dl_filename}

  noextract+=("$_dl_filename")
  source=("$_dl_filename"::"$_dl_url")
  sha256sums=('SKIP')
}

# common functions
pkgver() {
  echo "${_pkgver:?}"
}

prepare() {
  # desktop
  install -Dvm644 /dev/stdin "$_pkgname.desktop" << END
[Desktop Entry]
Version=1.0
Name=Mercury
Comment=Browse the World Wide Web
GenericName=Web Browser
Keywords=Internet;WWW;Browser;Web;Explorer;Mercury
Exec=$_pkgname %u
StartupWMClass=mercury-default
Terminal=false
X-MultipleArgs=true
Type=Application
Icon=$_pkgname
Categories=GNOME;GTK;Network;WebBrowser;
MimeType=text/html;text/xml;application/xhtml+xml;application/xml;application/rss+xml;application/rdf+xml;image/gif;image/jpeg;image/png;x-scheme-handler/http;x-scheme-handler/https;x-scheme-handler/ftp;x-scheme-handler/chrome;video/webm;application/x-xpinstall;
StartupNotify=true
Actions=NewWindow;NewPrivateWindow;TempUserDir;

[Desktop Action NewWindow]
Name=New Window
Exec=$_pkgname -new-window

[Desktop Action NewPrivateWindow]
Name=New Private Window
Exec=$_pkgname -private-window

[Desktop Action TempUserDir]
Name=Open With Temporary User Profile
Exec=$_pkgname --temp-profile
END

  install -Dvm644 /dev/stdin "$_pkgname.sh" << END
#!/usr/bin/env bash

# check microprocessor architecture level
if grep -qE '\bpni\b' /proc/cpuinfo ; then
  _message=''
  _message+=\$'The fastest Firefox fork on Earth.'
else
  _message=''
  _message+=\$'Your processor does not support SSE3 instructions.\n'
  _message+=\$'mercury-browser may not work on your computer.'
fi

# Allow users to override command-line options
XDG_CONFIG_HOME=\${XDG_CONFIG_HOME:-~/.config}
_FLAGFILE="\$XDG_CONFIG_HOME/mercury-flags.conf"
if [[ -f "\$_FLAGFILE" ]]; then
  _USER_FLAGS=\$(cat "\$_FLAGFILE")
fi

# display processor support message
if tty -s ; then
  echo "\$_message"
else
  [ ! -e "\$HOME/.mercury" ] && notify-send -a "mercury-browser" -t 7500 "\$_message"
fi

# Launch
exec /opt/mercury-browser/mercury \$_USER_FLAGS "\$@"
END
}

package() {
  provides=("$_pkgname=${pkgver%%.r*}")
  conflicts=("$_pkgname")

  depends+=(
    'alsa-lib'
    'dbus-glib'
    'gtk3'
    'libnotify' # notify-send

    ## implicit
    #at-spi2-core
    #cairo
    #dbus
    #fontconfig
    #freetype2
    #gcc-libs
    #gdk-pixbuf2
    #glib2
    #glibc
    #libx11
    #libxcb
    #libxcomposite
    #libxcursor
    #libxdamage
    #libxext
    #libxfixes
    #libxi
    #libxrandr
    #libxrender
    #pango
  )

  local _filetype="zip"
  if bsdtar -xf "$_dl_filename" -- data.tar.* &> /dev/null; then
    _filetype="deb"
  fi

  if [[ "${_filetype::1}" == 'z' ]]; then
    _package_zip
  else
    _package_deb
  fi

  # script
  \rm -rf "$pkgdir/usr/bin/mercury-browser"
  install -Dm755 "$_pkgname.sh" "$pkgdir/usr/bin/$_pkgname"

  # icon
  install -Dm644 "$pkgdir/opt/$_pkgname/browser/chrome/icons/default/default128.png" "$pkgdir/usr/share/pixmaps/$_pkgname.png"

  # .desktop
  \rm -rf "$pkgdir/usr/share/applications/mercury-browser.desktop"
  install -Dm644 "$_pkgname.desktop" "$pkgdir/usr/share/applications/$_pkgname.desktop"

  # symlink duplicate file
  ln -sf "/usr/bin/$_pkgname" "$pkgdir/opt/$_pkgname/mercury-bin"

  # remove unnecessary folders
  \rm -rf "$pkgdir/usr/lib/"
  \rm -rf "$pkgdir/usr/share/doc/"
  \rm -rf "$pkgdir/usr/share/icons"
  \rm -rf "$pkgdir/usr/share/lintian/"
  \rm -rf "$pkgdir/usr/share/man/"

  # fix permissions
  chmod -R u+rwX,go+rX,go-w "$pkgdir/"
}

_package_deb() {
  # extract archive
  bsdtar -xf "$_dl_filename" data.tar.*
  bsdtar -xf data.tar.gz -C "$pkgdir/"
  rm data.tar.gz

  # move files from /lib to /opt
  install -dm755 "$pkgdir/opt/$_pkgname"
  mv "$pkgdir/usr/lib/mercury"/* "$pkgdir/opt/$_pkgname/"
}

_package_zip() {
  local _depth=$(
    bsdtar -tf "$_dl_filename" -- */mercury/mercury$ \
      | tr -cd '/' | wc -c
  )

  # extract archive
  install -dm755 "$pkgdir/opt/$_pkgname"
  bsdtar --strip-components="$_depth" -C "$pkgdir/opt/$_pkgname/" -xf "$_dl_filename" '*/mercury/*'
}

# update version
_update_version() {
  : ${_pkgver:=${pkgver%%.r*}}

  if [[ "${_autoupdate::1}" != "t" ]]; then
    return
  fi

  local _blacklist _response _tags _tag _pkgver_new

  _blacklist=(
    "v.121.0.2" # windows only
  )
  _response=$(curl -Ssf "$url/releases.atom")
  _tags=$(
    printf '%s' "$_response" \
      | grep '/releases/tag/' \
      | sed -E 's@^.*/releases/tag/(.*)".*$@\1@' \
      | grep -Ev '[a-z]{2}'
  )
  for i in "${_blacklist[@]}"; do
    _tags=${_tags/$i/}
  done
  _tag=$(printf '%s' "$_tags" | sort -rV | head -1)
  _pkgver_new="${_tag#v.}"

  # update _pkgver
  if [ "$_pkgver" != "${_pkgver_new:?}" ]; then
    _pkgver="${_pkgver_new:?}"
  fi
}

# execute
_main_package