#!/bin/bash

# Name: parautinst
# Description: Parabola automated installer
# Author: Esteban V. Carnevale - alfplayer@mailoo.org


# Binary configuration switches are set like this
# 1 to enable
# 0 to disable

# sshfs remote cache directory location
#cache_sshfs='USER@HOST:CACHEDIR'

# Chroot directory
#chrootdir=/tmp/chroot
chrootdir="/mnt"

# HTTP proxy
#http_proxy=http://HOST:PORT/

# Create partition and mount? (binary)
partitioning_and_mount=1

# Pacman needs to be updated before installing Parabola? (binary)
pacman_needs_upgrade=0

# parabola-keyring needs to be updated before installing Parabola? (binary)
parabola_keyring_needs_upgrade=0

# Set a Parabola mirror
#mirror='http://repo.parabola.nu/$repo/os/$arch'

# Hostname
hostname="parabola"

# Time zone
timezone="/usr/share/zoneinfo/America/Buenos_Aires"

# Locale
locale="en_US.UTF-8 UTF-8"

# Keymap
keymap="es"

# Install virtio initramfs modules? (binary)
virtio=0



red='\e[31m'		# Red
cyan_bg='\e[46m'	# Cyan background
txtrst='\e[0m'		# Text Reset

info() { echo -e ${cyan_bg}PARAUTINST:${txtrst} "$@" ; }

error() { echo -e ${cyan_bg}PARAUTINST error:${txtrst} "$@" 1>&2 ; exit 1 ; }

[[ "$@" ]] || error "Usage: parautinst [partition]\nExample: parautinst sda1\nWARNING! All data on the specified partition will be lost."

info "${red}WARNING! All data on the partition $1 will be lost.${txtrst}\n\nPress any key to continue, or Ctrl-C to cancel."

read -n1

echo

part="$1"
hdd=${part%?}

export red cyan_bg txtrst info error part hdd chrootdir hostname timezone locale keymap virtio

export -f info error

[[ ! -e ${chrootdir} ]] && mkdir "${chrootdir}"

[[ ${mirror} ]] && echo "Server = ${mirror}" > /etc/pacman.d/mirrorlist

pacmancmd='pacman --cachedir /tmp -Sy --noconfirm --needed'

(( ${partitioning_and_mount} )) & {
	info "Unmounting ${part}"
	umount /dev/${part}
	info "Partitioning ${hdd}"
	parted /dev/${hdd} -s "mklabel msdos"
	parted /dev/${hdd} -s "mkpart primary ext4 1MiB -1s"
	info "Creating filesystem on ${part}"
	mkfs.ext4 /dev/${part}
	info "Mounting ${part} on ${chrootdir}"
	mount /dev/${part} "${chrootdir}"
}

(( ${pacman_needs_upgrade} )) && {
	info "Updating pacman database"
	pacman -Sy
	info "Updating pacman"
	${pacmancmd} pacman
}

[[ ${cache_sshfs} ]] && {
	info "Installing sshfs"
	${pacmancmd} sshfs
	info "Mounting package cache over sshfs"
        if grep -s '\s/var/cache/pacman/pkg\s' /etc/mtab ; then
                info "Package cache already mounted"
        else
                mount -t fuse.sshfs -o noauto,user,idmap=user,comment=x-systemd.automount,allow_other,StrictHostKeyChecking=no "${cache_sshfs}" /var/cache/pacman/pkg || error "Error mounting the package cache using sshfs"
	fi
}

(( ${parabola_keyring_needs_upgrade} )) && {
	info "Installing parabola-keyring"
	${pacmancmd} parabola-keyring
}

info "Running parautinst and installing base group and grub"
pacstrap -c "${chrootdir}" base grub
#cp /etc/libretools.conf /etc/makepkg.conf ${chrootdir}/etc

info "Running genfstab"
genfstab -p "${chrootdir}" >> "${chrootdir}"/etc/fstab

cp parautinst-chroot "${chrootdir}"/parautinst-chroot

#chmod +x ${chrootdir}/parautinst-chroot

arch-chroot "${chrootdir}" /bin/bash parautinst-chroot

rm "${chrootdir}"/parautinst-chroot