#! /bin/bash

#dialog installer that explains what will happen & create $USER, with option to cancel

#some constant values used by the dialog screens to make them more legible
BACK="--colors --backtitle"
TITLE="\Z7Pyrenee Conversion Utility"
MSG='--yes-label "OK" --msgbox'
SIZE="10 75"
SIZE2="20 75"

dialog  $BACK "$TITLE" --title "WELCOME!" $MSG  "Welcome to the Pyrenee Conversion Utility.\n\nThis utility will make a number of (mostly reversible) changes to your system. It should be run directly after installing Alpine Linux 3.15, which will setup the foundation we build upon." $SIZE

dialog $BACK "$TITLE" --form "Please supply the required information:\n(username can only contain small letters)" $SIZE 3 "Full Name:" 1 0 "" 1 11 60 0 " username:" 2 0 "" 2 11 60 0 2>input && FULLNAME=$(sed -n '1p' input) && USER=$(sed -n '2p' input | sed 's/[A-Z]/\L&/g') && rm -f input
#Return status of non-zero indicates cancel
if [ "$?" != "0" ] || [ "$USER" = "" ] || [ "$FULLNAME" = "" ]
then
  dialog $BACK "$TITLE" $MSG "Pyrenee Conversion was canceled at your request or either field was empty.\n\nPlease restart the Pyrenee Conversion Utility." $SIZE && clear
else

dialog $BACK "$TITLE" --insecure --title "Password Provider" --passwordbox "Provide a password for $FULLNAME" $SIZE 2>password && PASSWORD1=$(sed -n '1p' password) && rm -f password
#Return status of non-zero indicates cancel
  if [ "$?" != "0" ] || [ "$PASSWORD1" = "" ]
  then
    dialog $BACK "$TITLE" $MSG "Pyrenee Conversion was canceled at your request or input field was empty.\n\nPlease restart the Pyrenee Conversion Utility." $SIZE && clear
  else

    dialog $BACK "$TITLE" --insecure --title "Password Provider" --passwordbox "Confirm password for $FULLNAME" $SIZE 2>password && PASSWORD2=$(sed -n '1p' password) && rm -f password
#Return status of non-zero indicates cancel
    if [ "$?" != "0" ] || [ "$PASSWORD2" = "" ]
    then
      dialog $BACK "$TITLE" $MSG "Pyrenee Conversion was canceled at your request or input field was empty.\n\nPlease restart the Pyrenee Conversion Utility." $SIZE && clear
    else

      if [ "$PASSWORD1" != "$PASSWORD2" ]
      then
        dialog $BACK "$TITLE" $MSG "Pyrenee Conversion was canceled because the provided passwords didn't match.\n\nPlease restart the Pyrenee Conversion Utility." $SIZE && clear
      else
        dialog $BACK "$TITLE" --title "Confirmation" --yes-label "Enter" --no-label "Esc" --yesno "This is the last opportunity to cancel the conversion.\n\nPlease press <Enter> to start conversion or <Esc> to cancel." $SIZE

#Return status of non-zero indicates cancel
        if [ "$?" != "0" ]
        then
          dialog $BACK "$TITLE" $MSG "Pyrenee Conversion was canceled at your request." $SIZE && clear
        else
#backup rc.conf & enable rc_parallel
          cp /etc/rc.conf /etc/rc.conf.bak
          sed -i 's/\#rc\_parallel\=\"NO\"/rc\_parallel\=\"YES\"/g' /etc/rc.conf

#backup & switch repositories config file to https connection. enable community repo.
          cp /etc/apk/repositories /etc/apk/repositories.bak
          sed -i 's/http/https/g' /etc/apk/repositories
          sed -i 's/\# //g' /etc/apk/repositories

#backup original useradd config file & switch default shell from ash to bash.
#         cp /etc/default/useradd /etc/default/useradd.bak
#         sed -i 's/ash/bash' /etc/default/useradd
#add aliases to bash to ease transition to doas & make 'rm' always interactive.
          echo -e '#! /bin/bash\n\nalias sudo="doas"\nalias rm="rm -i"' > /etc/profile.d/aliases.sh

          adduser -D -g "$FULLNAME" $USER -s /bin/bash
          echo -e "$PASSWORD1\n$PASSWORD2" | passwd $USER

          apk upgrade | dialog $BACK "$TITLE" --progressbox $SIZE2
          setup-xorg-base | dialog $BACK "$TITLE" --progressbox $SIZE2
          apk add doas htop nano falkon flatpak plasma kde-applications-base kde-applications-accessibility pm-utils | dialog $BACK "$TITLE" --progressbox $SIZE2
#backup original doas.conf and permit group wheel and add some persistence
          cp /etc/doas.d/doas.conf /etc/doas.d/doas.conf.bak
          echo -e "permit :wheel\npermit persist :wheel" >> /etc/doas.d/doas.conf
#add video driver for QEMU
          apk add xf86-video-modesetting xf86-video-intel | dialog $BACK "$TITLE" --progressbox $SIZE
#         apk add xf86-video-qxl | dialog $BACK "$TITLE" --progressbox $SIZE
#         echo -e 'Section "Device"\n  Identifier "qxl"\n  Driver "qxl"\n  Option "ENABLE_SURFACES" "False"\nEndSection' > /etc/X11/xorg.conf
#backup nanorc & change nanorc settings to be a bit more advanced
          cp /etc/nanorc /etc/nanorc.bak
          sed -i 's/# set atblanks/set atblanks/g' /etc/nanorc
          sed -i 's/# set autoindent/set autoindent/g' /etc/nanorc
          sed -i 's/# set indicator/set indicator/g' /etc/nanorc
          sed -i 's/# set jumpyscrolling/set jumpyscrolling/g' /etc/nanorc
          sed -i 's/# set linenumbers/set linenumbers/g' /etc/nanorc
          sed -i 's/# set mouse/set mouse/g' /etc/nanorc
          sed -i 's/# set smarthome/set smarthome/g' /etc/nanorc
          sed -i 's/# set softwrap/set softwrap/g' /etc/nanorc
          sed -i 's/# set tabsize 8/set tabsize 2/g' /etc/nanorc
          sed -i 's/# set tabstospaces/set tabstospaces/g' /etc/nanorc
          sed -i 's/# set wordbounds/set wordbounds/g' /etc/nanorc
          sed -i 's/# set zap/set zap/g' /etc/nanorc
#set prompt colors in nano
          sed -i 's/# set titlecolor/set titlecolor/g' /etc/nanorc
          sed -i 's/# set promptcolor/set promptcolor/g' /etc/nanorc
          sed -i 's/# set statuscolor/set statuscolor/g' /etc/nanorc
          sed -i 's/# set errorcolor/set errorcolor/g' /etc/nanorc
          sed -i 's/# set spotlightcolor/set spotlightcolor/g' /etc/nanorc
          sed -i 's/# set selectedcolor/set selectedcolor/g' /etc/nanorc
          sed -i 's/# set stripecolor/set stripecolor/g' /etc/nanorc
          sed -i 's/# set scrollercolor/set scrollercolor/g' /etc/nanorc
          sed -i 's/# set numbercolor/set numbercolor/g' /etc/nanorc
          sed -i 's/# set keycolor/set keycolor/g' /etc/nanorc
          sed -i 's/# set functioncolor/set functioncolor/g' /etc/nanorc

          sed -i 's/# include \"\/usr\/share\/nano\/\*\.nanorc/include \"\/usr\/share\/nano\/\*\.nanorc/g' /etc/nanorc

#add & enable Internet Wireless Device (iwd)
          apk add iwd
          rc-service iwd start
          cp /etc/NetworkManager/NetworkManager.conf /etc/NetworkManager/NetworkManager.conf.bak
          echo -e "\n[device]\nwifi.backend=iwd" >> /etc/NetworkManager/NetworkManager.conf
<<COMMENT
#add pipewire and its plumbing
#https://wiki.alpinelinux.org/wiki/PipeWire
          apk add pipewire wireplumber pipewire-pulse pipewire-jack pipewire-spa-bluez
          mkdir /etc/pipewire
          cp /usr/share/pipewire/pipewire.conf /etc/pipewire/
          echo '{ path = "wireplumber"  args = "" }' >> /etc/pipewire/pipewire.conf
          modprobe snd_seq
          echo snd_seq >> /etc/modules
COMMENT
#enable Suspend on LID close
          mkdir /etc/acpi/LID
          touch /etc/acpi/LID/00000080
          echo -e "#!/bin/sh\n\nexec pm-suspend" >/etc/acpi/LID/00000080
          chmod +x /etc/acpi/LID/00000080

#add user to relevant groups
          adduser $USER audio
          adduser $USER disk
          adduser $USER flatpak
          adduser $USER input
          adduser $USER video
          adduser $USER wheel
#add Flathub to Flatpak and install Flatseal to graphically edit permissions
          flatpak --user remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
          flatpak install com.github.tchx84.Flatseal -y
#add sddm to OpenRC to automatically start it at boot
          rc-update add sddm
          dialog $BACK "$TITLE" --title "Finished!" --yes-label "Enter" --no-label "Esc" --yesno "Conversion was completed, it is recommended to reboot to finish your new Desktop experience!\n\nPlease press <Enter> to reboot or <Esc> to continue your current session." $SIZE
          if [ "$?" != "0" ]
          then
            clear
          else
            reboot now
          fi
        fi
      fi
    fi
  fi
fi