#!/bin/bash
#
# Name: installscriptpmac.sh
# Description: The CloverOS installation script for powerpc 32bit apple machines.
# Authors: See https://github.com/chiru-no/cloveros
# Version: dev
# DO NOT USE! it is under heavy development.

main() {
    check_as_root
    partition
    set_password
    setup_chroot
    config_setup
    system_sw_install
    user_sw_install
    sw_config
    reboot_system
}

## Print functions
# Used to print messages.

# Define colors
GOOD=$(printf '\033[32;01m')
WARN=$(printf '\033[33;01m')
BAD=$(printf '\033[31;01m')
HILITE=$(printf '\033[36;01m')
BRACKET=$(printf '\033[34;01m')
NORMAL=$(printf '\033[0m')

# Print error messages ########################################################
# Usage: p_error [message]
p_error() {
    printf "${BAD}*${NORMAL} %s\n" "$1"
}

## Worker functions ###########################################################
# For usage in main loop: each of these do a specific action. Designed to be
# able to be swapped out indepently, much like Alpine's install scripts.

# Checks for root status
# Usage: check_root
check_as_root() {
    if [ "$(id -u)" != "0" ]; then
        p_error "This script must be run as root!" 1>&2
        exit 1
    fi
}

# pmac partition scheme: hda1: apple pmac table (around 64kb?) hda2: apple bootblock (800kb) hda3: root (lol) hda4: swap
# Partition disks
# Usage: partition
partition() {
    read -p "Automatic partitioning (a) or manual partitioning? (m) [a/m] " -n 1 partitioning
    echo
    if [[ $partitioning = "a" ]]; then
        read -e -p "Enter drive for CloverOS installation: " -i "/dev/hda" drive
        partition=${drive}3
    elif [[ $partitioning = "m" ]]; then
        read -e -p "Enter partition for CloverOS installation: " -i "/dev/hda3" partition
        drive=${partition%"${partition##*[!0-9]}"}
    else
        p_error "Invalid option!"
        exit 1
    fi
    drive=${drive#*/dev/}
    partition=${partition#*/dev/}
    read -p "Partitioning: $partitioning
    Drive: /dev/$drive
    Partition: /dev/$partition
    Is this correct? [y/n] " -n 1 yn
    if [[ $yn != "y" ]]; then
        exit 1
    fi
    echo
    
    mkdir gentoo

    if [[ $partitioning = "a" ]]; then
        echo -e "FIX ME" | mac-fdisk /dev/$drive
    fi
    
    mkfs.ext4 -F /dev/$partition
	# no shit sherlock, pls automate me :(
	mkswap /dev/hda4
    tune2fs -O ^metadata_csum /dev/$partition
    mount /dev/$partition gentoo
}

# Set passwords
# Usage: set_password
set_password() {
    read -p "Enter preferred root password " rootpassword
    read -p "Enter preferred username " user
    read -p "Enter preferred user password " userpassword
}

# Sets up chrooting
# Usage: setup_chroot
setup_chroot() {
    cd gentoo

    wget http://distfiles.gentoo.org/releases/ppc/autobuilds/current-stage3-ppc/stage3-ppc-20170321.tar.bz2
    tar pxf stage3*
    rm -f stage3*

    cp /etc/resolv.conf etc
    mount -t proc none proc
    mount --rbind /dev dev
    mount --rbind /sys sys
}

# Syncs the gentoo tree and sets up the initial configuration 
# Usage: config_setup
config_setup () {
    chroot .

    emerge-webrsync
# support for altivec for fuckin fast hd porn decoding
    echo -e '\nPORTAGE_BINHOST="https://cloveros.ga"\nMAKEOPTS="-j8"\nEMERGE_DEFAULT_OPTS="--keep-going=y --autounmask-write=y --jobs=2 -G"\nCFLAGS="-O3 -pipe -funroll-loops -floop-block -floop-interchange -floop-strip-mine -altivec -ftree-loop-distribution"\nCXXFLAGS="${CFLAGS}"' >> /etc/portage/make.conf

  emerge gentoo-sources genkernel
  wget (need ppc config, gentoo default config is broken)
  genkernel --kernel-config=config.ppc32 all
}

# Sets up system software, kernel, and bootloader installation
# Usage: system_sw_install

system_sw_install() {

    emerge yaboot dhcpcd

    wget http://yabootconfig > /etc/yaboot.conf
	ybin /dev/hda 
    
    rc-update add dhcpcd default

    echo -e "$rootpassword\n$rootpassword" | passwd
    useradd $user
    echo -e "$userpassword\n$userpassword" | passwd $user
    gpasswd -a $user wheel
}

# Sets up user software installation
# Usage: user_sw_install
user_sw_install() {
    emerge -1 openssh openssl gcc
    echo "media-video/mpv ~ppc" >> /etc/portage/package.accept_keywords
    emerge xorg-server twm feh aterm sudo xfe wpa_supplicant dash porthole firefox emacs gimp mpv smplayer rtorrent weechat conky linux-firmware alsa-utils rxvt-unicode zsh zsh-completions gentoo-zsh-completions inconsolata vlgothic liberation-fonts bind-tools colordiff xdg-utils nano filezilla screenfetch scrot
    rm -Rf /usr/portage/packages/*
}

# Configuration of user software, and final preparation
sw_config() {
    sed -i "s/# %wheel ALL=(ALL) NOPASSWD: ALL/%wheel ALL=(ALL) NOPASSWD: ALL/" /etc/sudoers
    sed -Ei "s@c([2-6]):2345:respawn:/sbin/agetty 38400 tty@#\0@" /etc/inittab
    sed -i "s@c1:12345:respawn:/sbin/agetty 38400 tty1 linux@c1:12345:respawn:/sbin/agetty --noclear 38400 tty1 linux@" /etc/inittab
    sed -i "s/set timeout=5/set timeout=0/" /boot/grub/grub.cfg
    echo -e "ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=wheel\nupdate_config=1" > /etc/wpa_supplicant/wpa_supplicant.conf
    
    rc-update add alsasound default
    rc-update add wpa_supplicant default
    eselect fontconfig enable 52-infinality.conf
    eselect infinality set infinality
    eselect lcdfilter set infinality
    gpasswd -a $user audio
    gpasswd -a $user video
    cd /home/$user/
    rm .bash_profile
    
    wget https://raw.githubusercontent.com/chiru-no/cloveros/master/home/user/.bash_profile
    wget https://raw.githubusercontent.com/chiru-no/cloveros/master/home/user/.zshrc
    wget https://raw.githubusercontent.com/chiru-no/cloveros/master/home/user/.twmrc
    wget https://raw.githubusercontent.com/chiru-no/cloveros/master/home/user/.Xdefaults
    wget https://raw.githubusercontent.com/chiru-no/cloveros/master/home/user/wallpaper.png
    echo -e "session = /home/$user/.rtorrent\ndirectory = /home/$user/Downloads/\nport_range = 53165-62153\ndht = on\npeer_exchange = yes\nuse_udp_trackers = yes" > .rtorrent.rc
    
    mkdir Downloads
    mkdir .rtorrent
    mkdir .mpv
    cd .mpv
    wget https://raw.githubusercontent.com/chiru-no/cloveros/master/home/user/.mpv/config
    
    chown -R $user /home/$user/
    
#   Exit the chroot
    exit
}

# Reboot the system; made as a function for different means of rebooting
# Usage: reboot_system
reboot_system() {
    reboot
}

main "$@"

