#!/bin/bash

inf() {
    echo -e "\e[1m♠ $@\e[0m"
}

err() {
    echo -e "\e[1m\e[31m✗ $@\e[0m"
}

yn=""
yesno() {
    printf "\e[1m\e[33m$@ : \e[0m"
    read yn
}

# ---------------------------------
yn=""
yesno() {
    dialog --title Citrine --yesno "$@" 10 80
    yn=$?
}

dumptitle=""
dump() {
    dialog --title "${dumptitle}" --no-collapse --msgbox "$@" 0 0
}

msgdat=""
msgbox(){
    msgdat=$(dialog --title Citrine --inputbox "$@" --stdout 10 80)
}

pass=""
passbox(){
    pass=$(dialog --title Citrine --insecure --passwordbox "$@" --stdout 10 80)
}
# --------------------------

if [[ "$EUID" != "0" ]]; then
    err "Run as root"
    exit 1
fi

inf "Checking pacman keyrings"
pacman-key --init
pacman-key --populate archlinux
pacman-key --populate crystal

yesno "Do you need a keyboard layout other than QWERTY US?"
KBD="$yn"
echo "KBD=$KBD"

if [[ "$KBD" == "0" ]]; then
    keymaps=$(localectl list-keymaps | tr '\n' ' ' | sed 's/ /" "" "/g')
    keymap=$(dialog --title "Citrine" --menu "Select your keyboard layout" 10 80 0 $keymaps "" --stdout)

fi

clear

yesno "Would you like to partition manually?"
echo "PMODE=$yn"
PMODE="$yn"

dumptitle="System Disks"
diskdat="$(fdisk -l | grep Disk | grep sectors --color=never | grep -v loop)"
dump "$diskdat"

MANUAL="no"
DISK=""
if [[ "$PMODE" == "0" ]]; then
    MANUAL="yes"
else
    msgbox "Install target WILL BE FULLY WIPED"
    echo "DISK=$msgdat"
    DISK="$msgdat"
    if ! fdisk -l ${DISK}; then
        dumptitle="ERROR"
        dump "Seems like $DISK doesn't exist. Did you typo?"
        exit 1
    fi
fi

if [[ $DISK == *"nvme"* ]]; then
    inf "Seems like this is an NVME disk. Noting"
    NVME="yes"
else
    NVME="no"
fi
echo "NVME=$NVME"

if [[ -d /sys/firmware/efi/efivars ]]; then
    inf "Seems like this machine was booted with EFI. Noting"
    EFI="yes"
else
    EFI="no"
fi
echo "EFI=$EFI"

dumptitle="Please confirm"
if [[ "$EFI" == "yes" ]]; then
    dump "This PC seems to *have* booted with UEFI. Press enter to confirm, or Control+C to cancel"
else
    dump "This PC seems to *not* have booted with UEFI. Press enter to aknowledge, or press Control+C if this seems wrong."
fi

inf "Setting system clock via network"
timedatectl set-ntp true

if [[ "$MANUAL" == "no" ]]; then

    dumptitle="CAUTION!"
    dump "This is your last chance to avoid deleting critical data on $DISK. If you're not sure, press Control+C NOW!"

    echo "Partitioning disk"
    if [[ "$EFI" == "yes" ]]; then
        parted ${DISK} 'mklabel gpt' --script
        parted ${DISK} 'mkpart primary vfat 0 300' --script
        parted ${DISK} 'mkpart primary ext4 300 100%' --script
        inf "Partitioned ${DISK} as an EFI volume"
    else
        parted ${DISK} 'mklabel msdos' --script
        parted ${DISK} 'mkpart primary ext4 1 -1' --script
        inf "Partitioned ${DISK} as an MBR volume"
    fi

    if [[ "$NVME" == "yes" ]]; then
        if [[ "$EFI" == "yes" ]]; then
            inf "Initializing ${DISK} as NVME EFI"
            mkfs.vfat -F32 ${DISK}p1
            mkfs.ext4 ${DISK}p2
            mount ${DISK}p2 /mnt
            mkdir -p /mnt/boot/efi
            mount ${DISK}p1 /mnt/boot/efi
        else
            inf "Initializing ${DISK} as NVME MBR"
            mkfs.ext4 ${DISK}p1
            mount ${DISK}1 /mnt
        fi
    else
        if [[ "$EFI" == "yes" ]]; then
            inf "Initializing ${DISK} as EFI"
            mkfs.vfat -F32 ${DISK}1
            mkfs.ext4 ${DISK}2
            mount ${DISK}2 /mnt
            mkdir -p /mnt/boot/efi
            mount ${DISK}1 /mnt/boot/efi
        else
            inf "Initializing ${DISK} as MBR"
            mkfs.ext4 ${DISK}1
            mount ${DISK}1 /mnt
        fi
    fi
else
    clear

    dumptitle="Read carefully!"

    dump "You have chosen manual partitioning.\
    We're going to drop to a shell for you to partition, but first, PLEASE READ these notes.\
    Before you exit the shell, make sure to format and mount a partition for / at /mnt."

    if [[ "$EFI" == "yes" ]]; then
        mkdir -p /mnt/boot/efi

        dump "Additionally, since this machine was booted with UEFI, please make sure to make a 200MB or greater partition\
        of type VFAT and mount it at /mnt/boot/efi"
    else
        msgbox "Please give me the full path of the device you're planning to partition (needed for bootloader installation later)\
        .. Example: /dev/sda"
        DISK="${msgdat}"
    fi

    dumptitle="Suggestion"
    dump "You could also use the graphical 'Disks' application. This will take care of everything except mounting, which you will\
    still need to do within the shell."

    CONFDONE="NOPE"
    dumptitle="Citrine"

    while [[ "$CONFDONE" == "NOPE" ]]; do
        dump "Press enter to go to a shell. (ZSH)"
        zsh
        yesno "All set (and partitions mounted?)"
        echo "STAT=$yn"
        STAT="$yn"
        if [[ "$STAT" == "0" ]]; then

            if ! findmnt | grep /mnt; then
                err "Are you sure you've mounted the partitions?"
            else
                CONFDONE="YEP"
            fi
        fi
    done
fi

inf "Verifying network connection"
ping -c 1 google.com

if [[ ! "$?" == "0" ]]; then
    dumptitle="Error!"
    dump "It seems like this system can't reach the internet. Failing here."
    umount -l /mnt
    exit 1
fi

ntpd -g -q

inf "Setting up base Crystal System"

pacstrap /mnt base linux linux-firmware systemd-sysvcompat networkmanager man-db man-pages texinfo micro sudo curl archlinux-keyring neofetch which
if [[ ! "$?" == "0" ]]; then
    inf "pacstrap had some error. Retrying."
    pacstrap /mnt base linux linux-firmware systemd-sysvcompat networkmanager man-db man-pages texinfo micro sudo curl archlinux-keyring neofetch which
fi

if [[ "$EFI" == "yes" ]]; then
    inf "Installing EFI support packages"
    pacstrap /mnt efibootmgr grub
else 
    inf "Installing Syslinux bootloader"
    pacstrap /mnt grub
fi

genfstab -U /mnt > /mnt/etc/fstab

clear

cd /usr/share/zoneinfo/
var=$(echo */ | sed 's/\///g' | sed 's/ /" "" "/g')
var=$(echo \"$var\")
loc1=$(dialog --title "Citrine" --menu "Please pick a time zone" 20 100 43 $var "" --stdout)
loc1=$(echo $loc1 | sed 's/"//g')
cd /usr/share/zoneinfo/$loc1
var1=$(echo * | sed 's/\///g' | sed 's/ /" "" "/g')
var1=$(echo \"$var1\")
loc2=$(dialog --title "Citrine" --menu "Please pick a time zone" 20 100 43 $var1 "" --stdout)
loc2=$(echo $loc1 | sed 's/"//g')
TZ="/usr/share/zoneinfo/$loc1/$loc2"
cd /

arch-chroot /mnt ln -sf $TZ /etc/localtime
inf "Set TZ to ${TZ}"
inf "Syncing hardware offset"
arch-chroot /mnt hwclock --systohc

echo "en_US.UTF-8 UTF-8" >> /mnt/etc/locale.gen
echo "LANG=en_US.UTF-8" > /mnt/etc/locale.conf

clear
yesno "Do you need more locales than just en_US?"
echo "More=$yn"
More="$yn"

if [[ "$MORE" == "0" ]]; then
    msgbox "Preferred editor"
    dumptitle="Read carefully."
    dump "When we open the file, please remove the leading # before any locales you need.\
    Then, save and exit."
    nano /mnt/etc/locale.gen
fi

inf "Generating selected locales."
arch-chroot /mnt locale-gen

echo
echo
dumptitle="locale"
dump "en_US was set as system primary.\nAfter install, you can edit /etc/locale.conf to change the primary if desired."

if [[ "$KBD" == "y" || "$KBD" == "Y" ]]; then
    echo "KEYMAP=${KMP}" > /mnt/etc/vconsole.conf
fi

clear
msgbox "Enter the system hostname"
HOSTNAME="$msgdat"
echo ${HOSTNAME} > /mnt/etc/hostname
echo "127.0.0.1     localhost" > /mnt/etc/hosts

yesno "Would you like IPV6?"
IPS="$yn"

if [[ "$IPS" == "0" ]]; then
    echo "::1       localhost" >> /mnt/etc/hosts
fi
echo "127.0.0.1     ${HOSTNAME}.localdomain ${HOSTNAME}" >> /mnt/etc/hosts

clear
inf "Set a password for root"
done="nope"
while [[ "$done" == "nope" ]]; do
    passbox "Please enter root password"
    passInit="$pass"
    passbox "Please confirm root password"
    passConf="$pass"
    if [[ "$passInit" == "$passConf" ]]; then
        done="yep"
    else 
        dumptitle "Password error"
        dump "Passwords do not match. Please try again."
    fi
done
arch-chroot /mnt usermod --password $(echo ${pass} | openssl passwd -1 -stdin) ${UN}

msgbox "Your username"
UN="$msgdat"
arch-chroot /mnt useradd -m -G wheel -s /bin/bash ${UN}
inf "Set password for ${UN}"
done="nope"
while [[ "$done" == "nope" ]]; do
    passbox "Please enter password for ${UN}"
    passInit="$pass"
    passbox "Please confirm password for ${UN}"
    passConf="$pass"
    if [[ "$passInit" == "$passConf" ]]; then
        done="yep"
    else 
        dumptitle "Password error"
        dump "Passwords do not match. Please try again."
    fi
done
arch-chroot /mnt usermod --password $(echo ${pass} | openssl passwd -1 -stdin) ${UN}

echo >> /mnt/etc/sudoers
echo "# Enabled by Crystalinstall (citrine)" >> /mnt/etc/sudoers
echo "%wheel ALL=(ALL) ALL" >> /mnt/etc/sudoers
echo "Defaults pwfeedback" >> /mnt/etc/sudoers

if [[ "$EFI" == "yes" ]]; then
    arch-chroot /mnt grub-install --target=x86_64-efi --efi-directory=/boot/efi --bootloader-id=crystal --removable
else 
    arch-chroot /mnt grub-install --target=i386-pc ${DISK}
fi
arch-chroot /mnt grub-mkconfig -o /boot/grub/grub.cfg


arch-chroot /mnt systemctl enable NetworkManager
arch-chroot /mnt pacman-key --init
arch-chroot /mnt pacman-key --populate archlinux
arch-chroot /mnt pacman-key --populate crystal

clear

mkdir -p /mnt/etc/
cp -v /etc/pacman.conf /mnt/etc/pacman.conf

arch-chroot /mnt pacman -Sy --quiet --noconfirm

while [[ "$DE" == "" ]]; do
    menu=$(dialog --title "Citrine" --menu "Select the Desktop Environment you want to install" 12 100 4 "Official" "Our pre-themed desktop environments" "Third Party (supported)" "Third party Desktop Environments that are supported" "Third Party (unsupported)" "Third Party Desktop Environments that aren't supported" "None/DIY" "Install no de from this list" --stdout)
    if [[ "$menu" == "Official" ]]; then
        DE=$(dialog --title "Citrine" --menu "Please choose the DE you want to install" 12 100 2 "Onyx" "Our custom Desktop Environment based on Budgie" "Fig" "PearOS improved" --stdout)
    elif [[ "$menu" == "Third Party (supported)" ]]; then
        DE=$(dialog --title "Citrine" --menu "Please choose the DE you want to install" 12 100 5 "Gnome" "The Gnome desktop environment" "KDE" "The KDE desktop environment" "Xfce" "The xfce desktop environment" "budgie" "The budgie desktop environment" "Mate" "The Mate desktop environment" --stdout)
    elif [[ "$menu" == "Third Party (unsupported)" ]]; then
        DE=$(dialog --title "Citrine" --menu "Please choose the DE you want to install" 12 100 1 "Enlightenment" "A very DIY desktop environment, refer to archwiki" --stdout)
    elif [[ "$menu" == "None/DIY" ]]; then
        yesno "Are you sure that you dont want to install any DE?"
        if [[ "$yn" == "0" ]]; then
            DE="none"
            DM="none"
        else
            DE=""
        fi
    fi
    if [[ "$DE" == "Onyx" ]]; then
        arch-chroot /mnt pacman -S --quiet --noconfirm onyx
        DM="lightdm"
    elif [[ "$DE" == "Fig" ]]; then
        arch-chroot /mnt pacman -S --quiet --noconfirm plasma kde-applications sddm 
        arch-chroot /mnt pacman -Sy --quiet --noconfirm whitesur-kde-theme whitesur-icon-theme-git whitesur-cursor-theme-git whitesur-gtk-theme-git latte-dock
        DM="sddm"
    elif [[ "$DE" == "Gnome" ]]; then
        arch-chroot /mnt pacman -S --quiet --noconfirm gnome gnome-extra chrome-gnome-shell
        DM="gdm"
    elif [[ "$DE" == "KDE" ]]; then
        arch-chroot /mnt pacman -S --quiet --noconfirm plasma kde-applications sddm
        DM="sddm"
    elif [[ "$DE" == "budgie" ]]; then
        arch-chroot /mnt pacman -S --quiet --noconfirm budgie-desktop gnome
        DM="lightdm"
    elif [[ "$DE" == "Mate" ]]; then
        arch-chroot /mnt pacman -S --quiet --noconfirm mate mate-extra mate-applet-dock mate-applet-streamer
        DM="gdm"
    elif [[ "$DE" == "Enlightenment" ]]; then
        arch-chroot /mnt pacman -S --quiet --noconfirm enlightenment terminology
    elif [[ "$DE" == "Xfce" ]]; then
        arch-chroot /mnt pacman -S --quiet --noconfirm xfce4 xfce4-goodies
        DM="lightdm"
    fi
done

if [[ "$DM" == "" ]]; then
    inf "Your selected DE/WM doesn't have a standard display manager. Enter one of the below names, or leave blank for none"
    inf "- gdm"
    inf "- sddm"
    inf "- lightdm (you'll need a greeter package. See Arch Wiki)"
    inf "- (you can type another Arch package name if you have one in mind)"
    inf "- [blank] for none"
    yesno ""
    ND="$yn"
    echo "ND=$ND"
    if [[ "$ND" == "blank" || "$ND" == "none" || "$ND" == "" ]]; then
        inf "Ok, we will skip the DM install"
        DM=""
    else
        inf "Ok, we'll install $ND"
        DM="$ND"
        arch-chroot /mnt pacman -S --quiet --noconfirm $DM
    fi
else
    if [[ "$DM" != "none" ]]; then
        arch-chroot /mnt pacman -S --quiet --noconfirm $DM
    fi
fi

if [[ "$DM" != "" ]]; then
    if [[ "$DM" == "lightdm" ]]; then
        arch-chroot /mnt pacman -S --quiet --noconfirm lightdm-gtk-greeter
    fi
    if [[ "$DM" != "none" ]]; then
        yesno "Would you like to enable ${DM} for ${DE}? (Y/n)"
        useDM="$yn"
        if [[ "$useDM" != "1" ]]; then
            arch-chroot /mnt systemctl enable ${DM}
        fi
    fi
fi

yesno "Would you like to install flatpak?"
flatpak="$yn"
if [[ "$flatpak" == "0" ]]; then
    yesno "Would you like to use a gui flatpak store?"
    if [[ "$yn" == "0" ]]; then
        DE=$(dialog --title "Citrine" --menu "Please choose the Store you want to install" 12 100 2 "Gnome Software" "The software store made by gnome (recommended for GTK desktops)" "Discover" "The software store made by KDE (recommended for QT desktops)" --stdout)
        if [[ "$DE" == "Gnome Software" ]]; then
            arch-chroot /mnt pacman -S --quiet --noconfirm gnome-software gnome-software-packagekit-plugin
        elif [[ "$DE" == "Discover" ]]; then
            arch-chroot /mnt pacman -S --quiet --noconfirm discover
        fi
    fi
    arch-chroot /mnt pacman -S --quiet --noconfirm flatpak
    arch-chroot /mnt su - ${UN} -c "flatpak remote-add --if-not-exists --user flathub https://flathub.org/repo/flathub.flatpakrepo"
    dumptitle="Note"
    dump "Adding the flathub remote likely failed. We're sorry we can't work around this. Ask in discord if you need help."
fi

inf "Installation should now be complete."

yesno "Would you like to chroot into the new install to configure manually? (y/N)"
CH="$yn"
if [[ "$CH" = "0" ]]; then
    inf "Use 'exit' when done."
    arch-chroot /mnt
fi