#!/bin/bash
#
set -ex

echo "Version: Di 7. Nov 19:17:34 CET 2017"

if [[ $EUID -ne 0 ]]; then
    echo "This script must be run as root" 1>&2
    exit 1
fi
echo "Als root Angemeldet"

function minimalinstallation() {
    #Mehrzeiler
    while read line
    do
        pacstrap -c -d -G -M ${mountpoint} $line
    done < /etc/packages_all.txt

}

function secureumount() {
    if [ "${dateisystem}" == "btrfs" ]; then
        if cat /proc/mounts | grep ${mountpoint} > /dev/null; then
            if [ "${Partition}" == "gpt" ]; then
                umount ${mountpoint}/boot
            fi
        btrfs fi df ${mountpoint}
        echo "umount!!!"
        umount ${mountpoint}/home
        umount ${mountpoint}/opt
        umount ${mountpoint}/var/cache/pacman/pkg
        umount ${mountpoint}/var/lib
        # custom-mounts
        for wort in ${mountsnaps}
        do
            umount ${mountpoint}${wort}
        done
        umount ${mountpoint}
        umount /mnt/btrfs-root
        #umount -R /mnt
    fi
elif [ "${dateisystem}" == "ext4" ]; then
    if cat /proc/mounts | grep ${mountpoint} > /dev/null; then
        if [ "${Partition}" == "gpt" ]; then
            umount ${mountpoint}/boot
        fi
        umount ${mountpoint}
    fi
fi


}

function partionierenmitswap() {
wipefs -a -f ${device}
sgdisk -o ${device}
sgdisk -a 2048 -n 1::+1024K -c 1:"BIOS Boot Partition" -t 1:ef02 ${device}
sgdisk -a 2048 -n 2::+1G -c 2:"EFI Boot Partition" -t 2:ef00 ${device}
sgdisk -a 2048 -n 3::+8G -c 3:"Linux swap" -t 3:8200 ${device}
sgdisk -a 2048 -n 4:: -c 4:"Linux filesystem" -t 4:8300 ${device}

if [ "${verschluesselung}" == "y" ]; then
    echo "Bitte groß YES schreiben"
    cryptsetup -c aes-xts-plain64 -y -s 512 luksFormat ${device}${rootpartitionnummer}
    cryptsetup luksOpen ${device}${rootpartitionnummer} luks0
    deviceluks="/dev/mapper/luks0"
fi

}

function partionierenohneswap() {
wipefs -a -f ${device}
sgdisk -o ${device}
sgdisk -a 2048 -n 1::+1024K -c 1:"BIOS Boot Partition" -t 1:ef02 ${device}
sgdisk -a 2048 -n 2::+1G -c 2:"EFI Boot Partition" -t 2:ef00 ${device}
sgdisk -a 2048 -n 3:: -c 4:"Linux filesystem" -t 3:8300 ${device}

if [ "${verschluesselung}" == "y" ]; then
    echo "Bitte groß YES schreiben"
    cryptsetup -c aes-xts-plain64 -y -s 512 luksFormat ${device}${rootpartitionnummer}
    cryptsetup luksOpen ${device}${rootpartitionnummer} luks0
    deviceluks="/dev/mapper/luks0"
fi


}

function usbsecret() {

/usr/bin/curl -v -C - -f https://raw.githubusercontent.com/simono41/Simon-OS/master/install/usbsecret > ${mountpoint}/usr/lib/initcpio/install/usbsecret
/usr/bin/curl -v -C - -f https://raw.githubusercontent.com/simono41/Simon-OS/master/hooks/usbsecret > ${mountpoint}/root/usbsecret

# hooks
#cp install/usbsecret ${mountpoint}/usr/lib/initcpio/install/usbsecret
#cp hooks/usbsecret ${mountpoint}/usr/lib/initcpio/hooks/usbsecret

sed "s|%USB_UUID%|${usbsecretdeviceuuid}|g;" ${mountpoint}/root/usbsecret > ${mountpoint}/usr/lib/initcpio/hooks/usbsecret

}

function cron() {
echo "cron-job snapshot"
mkdir -p ${mountpoint}/var/spool/cron/
echo "0 18 * * * /usr/bin/snapshot make ROOT home opt var/cache/pacman/pkg ${mountsnaps}" > ${mountpoint}/var/spool/cron/root
if [ "${update}" != "n" ]; then
    /usr/bin/curl -v -C - -f https://raw.githubusercontent.com/simono41/Simon-OS/master/snapshot.sh > ${mountpoint}/usr/bin/snapshot
    chmod 755 ${mountpoint}/usr/bin/snapshot
fi
}

function makeswapfile() {
#swapfile
fallocate -l ${swapfilespeicher} ${mountpoint}/swapfile
chmod 600 ${mountpoint}/swapfile
mkswap ${mountpoint}/swapfile
echo "/swapfile none swap defaults 0 0" >> ${mountpoint}/etc/fstab
}

function makebtrfsswapfile() {

/usr/bin/curl -v -C - -f https://raw.githubusercontent.com/simono41/Simon-OS/master/btrfs-swapon > ${mountpoint}/usr/bin/btrfs-swapon
/usr/bin/curl -v -C - -f https://raw.githubusercontent.com/simono41/Simon-OS/master/btrfs-swapoff > ${mountpoint}/usr/bin/btrfs-swapoff
/usr/bin/curl -v -C - -f https://raw.githubusercontent.com/simono41/Simon-OS/master/btrfs-swapon.service > ${mountpoint}/root/btrfs-swapon.service

chmod +x ${mountpoint}/usr/bin/btrfs-swapon
chmod +x ${mountpoint}/usr/bin/btrfs-swapoff

sed "s|%swapfilespeicher%|${swapfilespeicher}|g;" ${mountpoint}/root/btrfs-swapon.service > ${mountpoint}/etc/systemd/system/btrfs-swapon.service

arch-chroot ${mountpoint} systemctl enable btrfs-swapon

}

function removeinstaller {
echo ""
if [ -f ${mountpoint}/usr/share/applications/arch-install.desktop ]
then
    rm ${mountpoint}/usr/share/applications/arch-install.desktop
fi
echo ""
if [ -f ${mountpoint}/root/Schreibtisch/arch-install.desktop ]
then
    rm ${mountpoint}/root/Schreibtisch/arch-install.desktop
fi
echo ""
if [ -f ${mountpoint}/home/user/Schreibtisch/arch-install.desktop ]
then
    rm ${mountpoint}/home/user/Schreibtisch/arch-install.desktop
fi
echo ""
if [ -f ${mountpoint}/root/Desktop/arch-install.desktop ]
then
    rm ${mountpoint}/root/Desktop/arch-install.desktop
fi
echo ""
if [ -f ${mountpoint}/home/user/Desktop/arch-install.desktop ]
then
    rm ${mountpoint}/home/user/Desktop/arch-install.desktop
fi
echo ""
}

function installation {

#boot
#root
#swap

#boot
echo "formatieren"
if [ "${Partition}" == "gpt" ]; then
    mkfs.vfat -F 32 ${device}${bootpartitionnummer}
fi

#root
if [ "${dateisystem}" == "btrfs" ]; then
    #mkfs.btrfs -f -L p_arch ${device}2
    btrfsformat #btrfs
    subvolume #btrfs

elif [ "${dateisystem}" == "ext4" ]; then
    echo "mit j bestätigen"
    if [ "${verschluesselung}" == "y" ]; then
        mkfs.ext4 -L p_arch ${deviceluks} #ext4
        mount ${deviceluks} ${mountpoint}
    else
        mkfs.ext4 -L p_arch ${device}${rootpartitionnummer} #ext4
        mount ${device}${rootpartitionnummer} ${mountpoint}
    fi

fi

#swap
if [ "${swap}" != "n" ]; then
    mkswap -L p_swap ${device}${swappartitionnummer}
fi

#installation
if [ "${offline}" != "n" ]
then
    if [ -f /run/archiso/bootmnt/arch/$(uname -m)/airootfs.sfs ]
    then
        echo "Es ist kein copytoram System."
        unsquashfs -f -d ${mountpoint} /run/archiso/bootmnt/arch/$(uname -m)/airootfs.sfs
    else
        echo "Es ist ein copytoram System."
        unsquashfs -f -d ${mountpoint} /run/archiso/copytoram/airootfs.sfs
    fi
else
    minimalinstallation
fi

#kernel
parameter="base udev "
if [ "${swap}" != "n" ]; then
    parameter="${parameter}resume "
fi
if [ "${verschluesselung}" == "y" ]; then
    parameter="${parameter}encrypt "
fi
parameter="${parameter}block filesystems keyboard "
if [ "${dateisystem}" == "btrfs" ]; then
    parameter="${parameter}btrfs "
fi
if [ "${usbsecret}" == "y" ]; then
    parameter="${parameter}usbsecret "
fi

echo ""
echo "MODULES=\"i915 radeon\"" > ${mountpoint}/etc/mkinitcpio.conf
echo "HOOKS=\"${parameter}\"" >> ${mountpoint}/etc/mkinitcpio.conf
echo "COMPRESSION=\"lz4\"" >> ${mountpoint}/etc/mkinitcpio.conf
echo "FILES=\"/etc/modprobe.d/blacklist-floppy.conf\"" >> ${mountpoint}/etc/mkinitcpio.conf
echo ""
echo "blacklist floppy" > ${mountpoint}/etc/modprobe.d/blacklist-floppy.conf
echo ""
#cp /etc/X11/xinit/xinitrc ${mountpoint}/etc/X11/xinit/xinitrc
echo "exec startxfce4" > ${mountpoint}/etc/X11/xinit/xinitrc
#
echo ""
echo "tmpfs /tmp tmpfs defaults 0 0" >> ${mountpoint}/etc/fstab
echo "tmpfs /dev/shm tmpfs defaults 0 0" >> ${mountpoint}/etc/fstab

#fstab
if [ "${Partition}" == "gpt" ]; then
    rootbind=$(blkid -s PARTUUID -o value ${device}${rootpartitionnummer})
elif [ "${Partition}" == "mbr" ]; then
    rootbind=$(blkid -s UUID -o value ${device}${rootpartitionnummer})
fi

#genfstab -Up ${mountpoint} >> ${mountpoint}/etc/fstab

if [ "${dateisystem}" == "btrfs" ]; then
    btrfsfstab #btrfs

    mkdir -p ${mountpoint}/run/btrfs-root
    if [ "${verschluesselung}" == "y" ]; then
        if [ "${Partition}" == "gpt" ]; then
            echo "${deviceluks} /run/btrfs-root/ btrfs defaults 0 0" >> ${mountpoint}/etc/fstab #btrfs
        elif [ "${Partition}" == "mbr" ]; then
            echo "${deviceluks} /run/btrfs-root/ btrfs defaults 0 0" >> ${mountpoint}/etc/fstab #btrfs
        fi
    else
        if [ "${Partition}" == "gpt" ]; then
            echo "PARTUUID=${rootbind} /run/btrfs-root/ btrfs defaults 0 0" >> ${mountpoint}/etc/fstab #btrfs
        elif [ "${Partition}" == "mbr" ]; then
            echo "UUID=${rootbind} /run/btrfs-root/ btrfs defaults 0 0" >> ${mountpoint}/etc/fstab #btrfs
        fi
    fi
    #grep -v "/var/lib" < ${mountpoint}/etc/fstab > fstab.neu; mv fstab.neu ${mountpoint}/etc/fstab

    echo "/run/btrfs-root/__current/ROOT/var/lib /var/lib none bind 0 0" >> ${mountpoint}/etc/fstab #btrfs

    cron

elif [ "${dateisystem}" == "ext4" ]; then
    if [ "${verschluesselung}" == "y" ]; then
        if [ "${Partition}" == "gpt" ]; then
            echo "${deviceluks} / ext4 rw,defaults,noatime,nodiratime,discard 0 0" >> ${mountpoint}/etc/fstab
        elif [ "${Partition}" == "mbr" ]; then
            echo "${deviceluks} / ext4 rw,defaults,noatime,nodiratime,discard 0 0" >> ${mountpoint}/etc/fstab
        fi
    else
        if [ "${Partition}" == "gpt" ]; then
            echo "PARTUUID=${rootbind} / ext4 rw,defaults,noatime,nodiratime,discard 0 0" >> ${mountpoint}/etc/fstab
        elif [ "${Partition}" == "mbr" ]; then
            echo "UUID=${rootbind} / ext4 rw,defaults,noatime,nodiratime,discard 0 0" >> ${mountpoint}/etc/fstab
        fi
    fi
fi

if [ "${Partition}" == "gpt" ]; then

    bootbind=$(blkid -s PARTUUID -o value ${device}${bootpartitionnummer})

    echo -e "PARTUUID=${bootbind} /boot vfat rw,relatime 0 2" >> ${mountpoint}/etc/fstab

fi

if [ "${swap}" != "n" ]; then
    if [ "${Partition}" == "gpt" ]; then
        swappartition=$(blkid -s PARTUUID -o value ${device}${swappartitionnummer})
        echo "PARTUUID=${swappartition} none swap defaults 0 0" >> ${mountpoint}/etc/fstab
    elif [ "${Partition}" == "mbr" ]; then
        swappartition=$(blkid -s UUID -o value ${device}${swappartitionnummer})
        echo "UUID=${swappartition} none swap defaults 0 0" >> ${mountpoint}/etc/fstab
    fi
fi

#makeswapfile+fstab
if [ "${swapfile}" == "y" ]; then
    if [ "${dateisystem}" == "btrfs" ]; then
        makebtrfsswapfile
    elif [ "${dateisystem}" == "ext4" ]; then
        makeswapfile
    fi
fi

#hostname
echo "${name}"s-OS > ${mountpoint}/etc/hostname

#openvpn
if [ "${openvpn}" != "n" ]; then
    arch-chroot ${mountpoint} systemctl enable openvpn-client@client.service
else
    arch-chroot ${mountpoint} systemctl disable openvpn-client@client.service
fi

if [ "${usbsecret}" == "y" ]; then
    usbsecret
fi

if [ "${verschluesselung}" == "y" ]; then
    if [ "${boot}" == "grub" ]; then
        tobootdevice=$(blkid -s UUID -o value ${device}${rootpartitionnummer})
        sed -i 's/GRUB_CMDLINE_LINUX=.*$/GRUB_CMDLINE_LINUX="cryptdevice=UUID='$tobootdevice':luks0"/' ${mountpoint}/etc/default/grub
        echo "GRUB_ENABLE_CRYPTODISK=y" >> ${mountpoint}/etc/default/grub
    fi
fi












#sie könne hier ihre scripte die bei der installation ausgeführt werden sollen hinzufügen :D






}

function btrfsformat() {
if [ "$raid" == "raid0" ]; then
    if [ "${verschluesselung}" == "y" ]; then
        mkfs.btrfs -f -m raid10 -d raid10 ${deviceluks} ${device1}
    else
        mkfs.btrfs -f -m raid0 -d raid0 ${device}${rootpartitionnummer} ${device1}
    fi
elif [ "$raid" == "raid1" ]; then
    if [ "${verschluesselung}" == "y" ]; then
        mkfs.btrfs -f -m raid10 -d raid10 ${deviceluks} ${device1}
    else
        mkfs.btrfs -f -m raid1 -d raid1 ${device}${rootpartitionnummer} ${device1}
    fi
elif [ "$raid" == "raid10" ]; then
    if [ "${verschluesselung}" == "y" ]; then
        mkfs.btrfs -f -m raid10 -d raid10 ${deviceluks} ${device1}
    else
        mkfs.btrfs -f -m raid10 -d raid10 ${device}${rootpartitionnummer} ${device1}
    fi
else
    if [ "${verschluesselung}" == "y" ]; then
        mkfs.btrfs -f -m single ${deviceluks}
    else
        mkfs.btrfs -f -m single ${device}${rootpartitionnummer}
    fi
fi
btrfs filesystem show

}

function btrfsfstab() {

if [ "${Partition}" == "gpt" ]; then
    rootbind=$(blkid -s PARTUUID -o value ${device}${rootpartitionnummer})
elif [ "${Partition}" == "mbr" ]; then
    rootbind=$(blkid -s UUID -o value ${device}${rootpartitionnummer})
fi

if [ "${verschluesselung}" == "y" ]; then

    if [ "${Partition}" == "gpt" ]; then

        echo -e "${deviceluks} / btrfs rw,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/ROOT 0 0" >> ${mountpoint}/etc/fstab

        echo -e "${deviceluks} /home btrfs rw,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/home 0 0" >> ${mountpoint}/etc/fstab
        echo -e "${deviceluks} /opt btrfs rw,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/opt 0 0" >> ${mountpoint}/etc/fstab
        echo -e "${deviceluks} /var/cache/pacman/pkg btrfs rw,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/var/cache/pacman/pkg 0 0" >> ${mountpoint}/etc/fstab

        # custom-mounts
        for wort in ${mountsnaps}
        do
            echo -e "${deviceluks} ${wort} btrfs rw,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current${wort} 0 0" >> ${mountpoint}/etc/fstab
        done


    elif [ "${Partition}" == "mbr" ]; then

        echo -e "UUID=${rootbind} / btrfs rw,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/ROOT 0 0" >> ${mountpoint}/etc/fstab

        echo -e "UUID=${rootbind} /home btrfs rw,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/home 0 0" >> ${mountpoint}/etc/fstab
        echo -e "UUID=${rootbind} /opt btrfs rw,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/opt 0 0" >> ${mountpoint}/etc/fstab
        echo -e "UUID=${rootbind} /var/cache/pacman/pkg btrfs rw,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/var/cache/pacman/pkg 0 0" >> ${mountpoint}/etc/fstab

        # custom-mounts
        for wort in ${mountsnaps}
        do
            echo -e "UUID=${rootbind} ${wort} btrfs rw,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current${wort} 0 0" >> ${mountpoint}/etc/fstab
        done
    fi

else

    if [ "${Partition}" == "gpt" ]; then

        echo -e "PARTUUID=${rootbind} / btrfs rw,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/ROOT 0 0" >> ${mountpoint}/etc/fstab

        echo -e "PARTUUID=${rootbind} /home btrfs rw,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/home 0 0" >> ${mountpoint}/etc/fstab
        echo -e "PARTUUID=${rootbind} /opt btrfs rw,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/opt 0 0" >> ${mountpoint}/etc/fstab
        echo -e "PARTUUID=${rootbind} /var/cache/pacman/pkg btrfs rw,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/var/cache/pacman/pkg 0 0" >> ${mountpoint}/etc/fstab

        # custom-mounts
        for wort in ${mountsnaps}
        do
            echo -e "PARTUUID=${rootbind} ${wort} btrfs rw,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current${wort} 0 0" >> ${mountpoint}/etc/fstab
        done


    elif [ "${Partition}" == "mbr" ]; then

        echo -e "UUID=${rootbind} / btrfs rw,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/ROOT 0 0" >> ${mountpoint}/etc/fstab

        echo -e "UUID=${rootbind} /home btrfs rw,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/home 0 0" >> ${mountpoint}/etc/fstab
        echo -e "UUID=${rootbind} /opt btrfs rw,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/opt 0 0" >> ${mountpoint}/etc/fstab
        echo -e "UUID=${rootbind} /var/cache/pacman/pkg btrfs rw,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/var/cache/pacman/pkg 0 0" >> ${mountpoint}/etc/fstab

        # custom-mounts
        for wort in ${mountsnaps}
        do
            echo -e "UUID=${rootbind} ${wort} btrfs rw,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current${wort} 0 0" >> ${mountpoint}/etc/fstab
        done

    fi

fi
}

function btrfsmount() {
#[[ -z "${device}" ]] && device=${2}

if [ "${1}" == "1" ] || [ "${1}" == "" ]; then
    if [ "${verschluesselung}" == "y" ]; then
        mkdir -p /mnt/btrfs-root
        mount -o defaults,noatime,nodiratime,space_cache,discard,ssd,compress=lzo ${deviceluks} /mnt/btrfs-root
    else
        mkdir -p /mnt/btrfs-root
        mount -o defaults,noatime,nodiratime,space_cache,discard,ssd,compress=lzo ${device}${rootpartitionnummer} /mnt/btrfs-root
    fi
fi
if [ "${1}" == "2" ] || [ "${1}" == "" ]; then
    if [ "${verschluesselung}" == "y" ]; then
        mkdir -p ${mountpoint}
        mount -o defaults,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/ROOT ${deviceluks} ${mountpoint}

        mkdir -p ${mountpoint}/home
        mkdir -p ${mountpoint}/opt
        mkdir -p ${mountpoint}/var/cache/pacman/pkg
        mount -o defaults,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/home ${deviceluks} ${mountpoint}/home
        mount -o defaults,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/opt ${deviceluks} ${mountpoint}/opt
        mount -o defaults,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/var/cache/pacman/pkg ${deviceluks} ${mountpoint}/var/cache/pacman/pkg

        # custom-mounts
        for wort in ${mountsnaps}
        do
            mkdir -p ${mountpoint}${wort}
            mount -o defaults,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current${wort} ${deviceluks} ${mountpoint}${wort}
        done

        mkdir -p ${mountpoint}/var/lib
        mount --bind /mnt/btrfs-root/__current/ROOT/var/lib ${mountpoint}/var/lib
    else
        mkdir -p ${mountpoint}
        mount -o defaults,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/ROOT ${device}${rootpartitionnummer} ${mountpoint}

        mkdir -p ${mountpoint}/home
        mkdir -p ${mountpoint}/opt
        mkdir -p ${mountpoint}/var/cache/pacman/pkg
        mount -o defaults,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/home ${device}${rootpartitionnummer} ${mountpoint}/home
        mount -o defaults,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/opt ${device}${rootpartitionnummer} ${mountpoint}/opt
        mount -o defaults,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/var/cache/pacman/pkg ${device}${rootpartitionnummer} ${mountpoint}/var/cache/pacman/pkg

        # custom-mounts
        for wort in ${mountsnaps}
        do
            mkdir -p ${mountpoint}${wort}
            mount -o defaults,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current${wort} ${device}${rootpartitionnummer} ${mountpoint}${wort}
        done

        mkdir -p ${mountpoint}/var/lib
        mount --bind /mnt/btrfs-root/__current/ROOT/var/lib ${mountpoint}/var/lib
    fi
    # boot mount
    mkdir -p ${mountpoint}/boot
    if [ "${Partition}" == "gpt" ]; then
        mount -t vfat ${device}${bootpartitionnummer} ${mountpoint}/boot
    fi

fi
}

function subvolume() {

# Mount
btrfsmount 1

# Create
mkdir -p /mnt/btrfs-root/__snapshot
mkdir -p /mnt/btrfs-root/__current
btrfs subvolume create /mnt/btrfs-root/__current/ROOT
btrfs subvolume create /mnt/btrfs-root/__current/home
btrfs subvolume create /mnt/btrfs-root/__current/opt
mkdir -p /mnt/btrfs-root/__current/var/cache/pacman
btrfs subvolume create /mnt/btrfs-root/__current/var/cache/pacman/pkg/

# custom-mounts
for wort in ${mountsnaps}
do
    mkdir -p /mnt/btrfs-root/__current${wort%/*}
    btrfs subvolume create /mnt/btrfs-root/__current${wort}
done

btrfs subvolume list -p /mnt/btrfs-root

# Mount
btrfsmount 2

}

function update() {
#statements
local if="${1}"
local of="${2}"
local parameters="${3}"
local before="${4}"
if [ -f "${of}" ]
then
    rm ${of}
else
    echo "${of} nicht vorhanden!"
fi
/usr/bin/curl -v -C - -f ${if} > ${of}
chmod 755 ${of}
[[ -n "${5}" ]] && of=${5}
${before} ${of} ${parameters}
}

function systemdboot() {
tobootdevice=$(blkid -s PARTUUID -o value ${device}${rootpartitionnummer})
swappartitionpart=$(blkid -s PARTUUID -o value ${device}${swappartitionnummer})

# zurücksetzen der parameter
parameter=""

if [ "${swap}" == "y" ]; then
    parameter="${parameter}resume=PARTUUID=${swappartitionpart} "
fi

if [ "${dateisystem}" == "btrfs" ]; then
    parameter="${parameter}rootflags=subvol=__current/ROOT "
fi

#rootsub=$(btrfs subvolume list /mnt | awk 'NR<0 && NR>2 {print $2}')

mkdir -p ${mountpoint}/boot/EFI/systemd/
mkdir -p ${mountpoint}/boot/EFI/BOOT/
cp ${mountpoint}/usr/lib/systemd/boot/efi/systemd-bootx64.efi ${mountpoint}/boot/EFI/systemd/systemd-bootx64.efi
cp ${mountpoint}/usr/lib/systemd/boot/efi/systemd-bootx64.efi ${mountpoint}/boot/EFI/BOOT/BOOTX64.EFI

mkdir -p ${mountpoint}/boot/loader/entries/
echo "title    "${name}"s-os" > ${mountpoint}/boot/loader/entries/arch-uefi.conf
echo "linux    /vmlinuz-linux" >> ${mountpoint}/boot/loader/entries/arch-uefi.conf
echo "initrd   /intel-ucode.img" >> ${mountpoint}/boot/loader/entries/arch-uefi.conf
echo "initrd   /initramfs-linux.img" >> ${mountpoint}/boot/loader/entries/arch-uefi.conf
echo "options  root=PARTUUID=${tobootdevice} rw ${parameter}" >> ${mountpoint}/boot/loader/entries/arch-uefi.conf

echo "title    "${name}"s-os" > ${mountpoint}/boot/loader/entries/arch-uefi-fallback.conf
echo "linux    /vmlinuz-linux" >> ${mountpoint}/boot/loader/entries/arch-uefi-fallback.conf
echo "initrd   /intel-ucode.img" >> ${mountpoint}/boot/loader/entries/arch-uefi-fallback.conf
echo "initrd   /initramfs-linux-fallback.img" >> ${mountpoint}/boot/loader/entries/arch-uefi-fallback.conf
echo "options  root=PARTUUID=${tobootdevice} rw ${parameter}" >> ${mountpoint}/boot/loader/entries/arch-uefi-fallback.conf

echo "default   arch-uefi" > ${mountpoint}/boot/loader/loader.conf
echo "timeout   1" >> ${mountpoint}/boot/loader/loader.conf

if [ "${booteintraege}" != "n" ]; then

    echo "Zusätzliche Booteinträge werden erstellt!!!"

    arch-chroot ${mountpoint} efibootmgr -c -d ${device} -p 1 -l /EFI/systemd/systemd-bootx64.efi -L "Linux Boot Manager"

    arch-chroot ${mountpoint} efibootmgr -c -d ${device} -p 1 -l \vmlinuz-linux -L "Arch Linux efistub" -u "initrd=/initramfs-linux.img root=PARTUUID=${tobootdevice} rw ${parameter}"

    # überschreibt die efistub deswegen entfernt
    #arch-chroot ${mountpoint} efibootmgr -c -d ${device} -p 1 -l \vmlinuz-linux -L "Arch Linux fallback efistub" -u "initrd=/initramfs-linux-fallback.img root=PARTUUID=${tobootdevice} rw ${parameter}"

    #arch-chroot ${mountpoint} bootctl install

fi

}

function abfrage() {
read -p "Wie heissen sie?: " name
[[ -z "${name}" ]] && name=arch-linux

# Partionierung
# GPT oder MBR
echo ""
echo "GPT = GUID Partition Table 64 Bit UEFI"
echo "Empfohlen fuer Neuere PCs"
echo "WICHTIG DAFUER MUESSEN SIE IM BOOTMENUE DEN UEFI USB_STICK AUSGEWAEHLT HABEN SONST KANN KEIN UEFI BOOTEINTRAG ERSTELLT WERDEN!!!"
echo ""
echo "MBR = Master Boot Record 32 Bit Legacy"
echo "Empfohlen fuer Alte PCs und portable USB-Sticks"
echo ""
echo "Bitte die Eingaben klein schreiben :D !!!"
echo "Für jedes ja must du ein y machen und für jedes nein ein n ok !!!"
echo ""
if mount | grep efi > /dev/null; then
    echo "System unterstützt UEFI"
    read -p "Wie moechten sie ihre Festplatte partioniert haben: [GPT/mbr] " Partition
    [[ -z "${Partition}" ]] && Partition=gpt
else
    echo "System unterstützt kein UEFI"
    read -p "Wie moechten sie ihre Festplatte partioniert haben: [gpt/MBR] " Partition
    [[ -z "${Partition}" ]] && Partition=mbr
fi

if [ "${Partition}" == "gpt" ]
then
    read -p "Soll mit systemd gebootet werden oder mit grub? [systemd/GRUB] : " boot
    if [ "${boot}" == "systemd" ]; then
        read -p "Sollen noch zusätzliche Booteinträge erstelt werden? [Y/n] : " booteintraege
    fi

fi
[[ -z "${boot}" ]] && boot=grub

fdisk -l
read -p "Geben sie eine Festplatte an: /dev/sda " device
[[ -z "${device}" ]] && device=/dev/sda

read -p "Welches Passwort soll der Root erhalten?: root " pass
[[ -z "${pass}" ]] && pass=root

read -p "Welches Dateisystem soll benutzt werden? [BTRFS/ext4] " dateisystem
[[ -z "${dateisystem}" ]] && dateisystem=btrfs

if [ "${dateisystem}" == "btrfs" ]; then
    read -p "Soll ein raid gemacht werden?: [raid0/raid1/raid10/n] " raid
    [[ -z "${raid}" ]] && raid=n
    if [ "${raid}" == "n" ]; then
        echo "Kein raid wird erzeugt!"
    else
        fdisk -l
        read -p "Bitte geben sie die Festplatten in eine Reihe an die zu einem Raid verbunden werden sollen!!!: " device1
    fi
    echo "Standartmässige Snapshots / /home /opt /var/cache/pacman/pkg"
    echo "Die Verzeichnisse dürfen sich nicht überlappen sonst kann es zu problemen mit dem unmounten kommen!!!"
    read -p "Sollen mehr Snapshots erstellt werden?: " mountsnaps
fi

read -p "Wollen sie eine swap-partition erstellen? : [Y/n] " swap
read -p "Wollen sie eine swapfile erstellen? : [y/N] " swapfile

if [ "${update}" != "n" ]; then

    echo "Diese einstellung kann man mit: "
    echo "systemctl enable openvpn-client@client.service aktivieren und mit"
    echo "systemctl disable openvpn-client@client.service deaktivieren"
    echo "Die Bandbreite wird dadurch reduziert aber die Sicherheit deutlich erhöht"
    read -p "Soll die Verbindung mit einer VPN verschlüsselt werden? : [Y/n] " openvpn

fi

if [ "${update}" != "n" ]; then

    echo "WARNUNG das System wird nicht verschlüsselt!!!"
    echo "WARNUNG ohne den USB-Stick startet das System nicht mehr!!!"
    read -p "Soll ein USB-Stick als Schlüssel für das System installiert werden? : [y/N] " usbsecret
    if [ "${usbsecret}" == "y" ]; then
        read -p "Welcher USB-Stick soll ausgewählt werden für die USB-secret Schlüssel?: /dev/sdb1 " usbsecretdevice
        [[ -z "${usbsecretdevice}" ]] && device=/dev/sdb1
        usbsecretdeviceuuid=$(blkid -s UUID -o value ${usbsecretdevice})
        [[ -z "${usbsecretdeviceuuid}" ]] && mkfs.ext4 ${usbsecretdevice}
    fi
fi

read -p "Soll die Festplatte verschlüsselt werden? : [y/N] " verschluesselung

# berechnungen

if [ "${update}" != "n" ] && [ "spectre-os" != "$(cat /etc/hostname)" ]; then
    read -p "Soll eine Offline-Installation durchgefuehrt werden? : [Y/n] " offline
    if [ "${offline}" != "n" ]
    then
        install="offline"
    else
        install="online"
    fi
else
    install="offline"
fi

# Dateisystem
if [ "${dateisystem}" == "btrfs" ]; then
    mountpoint="/mnt/btrfs-current"
elif [ "${dateisystem}" == "ext4" ]; then
    mountpoint="/mnt"
fi

#
echo "Name: ${name}"
echo "Partionsart: ${Partition}"
echo "Bootloader: ${boot}"
echo "Laufwerk: ${device}"
if [ "${raid}" != "n" ]; then
    echo "Raid: ${raid}"
    echo "Festplatten: ${device1}"
fi
echo "Dateisystem: ${dateisystem}"
#echo "System-Partition ${speicher}"
#if [ "${swap}" != "n" ]; then
#    echo "Swap-partition ${swapspeicher}"
#fi
#if [ "${swapfile}" == "y" ]; then
#    echo "Swapfile ${swapfilespeicher}"
#fi
echo "Rootpasswort: ${pass}"
echo "Architektur: $(uname -m)"
echo "Installation: ${install}"
if [ "${dateisystem}" == "btrfs" ]; then
    for wort in ${mountsnaps}
    do
        echo "Snapshot ${wort} wird erstellt!!!"
    done
fi
if [ "${openvpn}" != "n" ]; then
    echo "VPN-Verschlüsselung: aktiv"
fi
if [ "${usbsecret}" == "y" ]; then
    echo "USB-secret: aktiv"
    echo "USB-UIDD: ${usbsecretdeviceuuid}"
    echo "USB-Label: ${usbsecretdevice}"
fi
if [ "${verschluesselung}" == "y" ]; then
    echo "Fesptplatte mit Luks 512KB verschlüsselung: aktiv"
fi


# Partitionierung

if [ "${dateisystem}" == "btrfs" ]; then
    if [ "${Partition}" == "gpt" ]; then
        bootpartitionnummer=1
        efipartitionnummer=2
        rootpartitionnummer=3
        if [ "${swap}" != "n" ]; then
            swappartitionnummer=3
            rootpartitionnummer=4
        fi
    elif [ "${Partition}" == "mbr" ]; then
        bootpartitionnummer=1
        efipartitionnummer=2
        rootpartitionnummer=3
        if [ "${swap}" != "n" ]; then
            swappartitionnummer=3
            rootpartitionnummer=4
        fi
    fi
elif [ "${dateisystem}" == "ext4" ]; then
    if [ "${Partition}" == "gpt" ]; then
        bootpartitionnummer=1
        efipartitionnummer=2
        rootpartitionnummer=3
        if [ "${swap}" != "n" ]; then
            swappartitionnummer=3
            rootpartitionnummer=4
        fi
    elif [ "${Partition}" == "mbr" ]; then
        bootpartitionnummer=1
        efipartitionnummer=2
        rootpartitionnummer=3
        if [ "${swap}" != "n" ]; then
            swappartitionnummer=3
            rootpartitionnummer=4
        fi
    fi
fi

echo "Boot-Partition = ${device}${bootpartitionnummer}"
echo "EFI-Partition = ${device}${efipartitionnummer}"
echo "Swap-Partition = ${device}${swappartitionnummer}"
echo "ROOT-Partition = ${device}${rootpartitionnummer}"


#
read -p "Sind alle Angaben Richtig?: [y/N] " sicherheitsabfrage
if [ "$sicherheitsabfrage" != "y" ]
then
    echo "ABGEBROCHEN"
    exit 1
fi
if [ "${update}" != "n" ] && [ "spectre-os" != "$(cat /etc/hostname)" ]; then
    echo "Nur für reine arch-linux systeme benötigend!!!"
    read -p "Sollen noch wichtige Packete für die installation installiert werden? [y/N] " packete
    if [ "${packete}" == "y" ]; then
        pacman -Syu base base-devel syslinux efibootmgr efitools grub intel-ucode os-prober btrfs-progs dosfstools arch-install-scripts xorriso cdrtools squashfs-tools wget dosfstools btrfs-progs gdisk dialog bash-completion git iw wireless_tools wpa_supplicant
    fi
fi
echo "Betriebssystem wird installiert!!!"
sleep 5
}











if [ "${1}" != "n" ]
then
read -p "Soll im Internet geguckt werden ob es ein neues Install-Script gibt und dann ausgefuehrt werden?: [Y/n] " update
if [ "${update}" == "debug" ]
then
    echo "Überspringe das herunterladen einen neuen Scriptes!!!"
else
    if [ "${update}" != "n" ]
    then
        update https://raw.githubusercontent.com/simono41/Simon-OS/master/arch-install /root/arch-install.new n
        exit 0
    fi
fi

# debug = Installation überspringen zu arch-graphical-install und DEBEUG-MODUS
abfrage

secureumount

if [ "${name}" == "debug" ]
then
    echo "DEBEUG-MODUS"
    echo "Wenn kein befehl mehr ausgefuehrt werden muss einfach eingabetaste druecken"
    echo "Welcher befehl soll ausgefuert werden? "

    befehl=blablabla
    while [ "$befehl" != "" ]
    do
        read -p "" befehl
        $befehl
    done

fi

fi

#
echo "Eine Säuberung erhört die chance der Installation auf dem System."
echo "Es kann eine Zeit lang dauern!"
dd if=/dev/zero of=${device} bs=64M count=10 status=progress
#
if [ "${Partition}" == "gpt" ]
then
echo "Partioniere in GPT"

if [ "${swap}" != "n" ]; then
    echo "Erstelle zustzliche swap-partition"
    partionierenmitswap
else
    partionierenohneswap
fi
echo "installation"
installation
arch-chroot ${mountpoint} /bin/bash <<EOT
mkinitcpio -p linux
passwd
${pass}
${pass}
EOT
echo ""
if [ "${boot}" == "grub" ]
then
    arch-chroot ${mountpoint} /bin/bash <<EOT
grub-install --target=x86_64-efi --efi-directory=/boot --bootloader-id="${name}"s-os --recheck
grub-mkconfig -o /boot/grub/grub.cfg
EOT
else
    systemdboot
fi
removeinstaller
echo "Fertig"
elif [ "${Partition}" == "mbr" ]; then
echo "Partioniere in MBR"
if [ "${swap}" != "n" ]; then
    echo "Erstelle zustzliche swap-partition"
    partionierenmitswap
else
    partionierenohneswap
fi
echo "installation"
installation
arch-chroot ${mountpoint} /bin/bash <<EOT
mkinitcpio -p linux
passwd
${pass}
${pass}
grub-install --target=i386-pc --recheck ${device}
grub-mkconfig -o /boot/grub/grub.cfg
EOT
removeinstaller
echo "Fertig"
else
echo "Eingabe Ungueltig"
exit 1
fi

if [ "${update}" != "n" ] && [ "spectre-os" != "$(cat /etc/hostname)" ]; then
read -p "Soll die erweiterte Installation durchgeführt werden? [Y/n] " graphical
if [ "$graphical" != "n" ]
then
    update https://raw.githubusercontent.com/simono41/Simon-OS/master/arch-graphical-install ${mountpoint}/root/arch-graphical-install "n" "arch-chroot ${mountpoint}" /root/arch-graphical-install
fi
fi
echo "df!!!"
df -h
if [ "${dateisystem}" == "btrfs" ]; then
btrfs filesystem df ${mountpoint}
fi
echo "umount!!!"
sleep 5
secureumount
echo ""
echo "Fertig!!!"
read -p "Installation erfolgreich Abgeschlossen. Wollen sie den PC NEUSTARTEN?: [Y/n] " sicherheitsabfrage
if [ "$sicherheitsabfrage" != "n" ]
then
echo "starte neu"
reboot
fi
exit 0