#!/bin/bash

# matter-setup | Matterlinux System Setup Script 
# Copyright (C) 2023 Matterlinux 

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.

############################
## logging functions/vars ##
############################
BOLD="\e[1m"
RESET="\e[0m"
GREEN="\e[32m"
BLUE="\e[34m"
GRAY="\e[37m"
RED="\e[31m"

success() {
  echo -e "$BOLD$GREEN>>>$RESET$BOLD $1$RESET"
}

info() {
  echo -e "$BOLD$BLUE>>>$RESET$BOLD $1$RESET"
}

error() {
  echo -e "$BOLD$RED>>>$RESET$BOLD $1$RESET"
  exit 1
}

####################
## util functions ##
####################
check_ret() {
  if [ $? -ne 0 ]; then
    error "$1"
  fi
}

#################
## main script ##
#################
if [ $# -eq 0 ]; then
  error "Please specify a directory"
fi

TARGET=$(realpath $1) 
if ! type mp > /dev/null; then
  error "mp is not installed, please install and configure mp"
fi

info "Creating directory structure"
pushd $TARGET > /dev/null
  mkdir -p {dev,proc,sys,run,tmp,root,home,boot}
  mkdir -p var/{log,mail,lib}
  mkdir -p usr/{bin,lib,sbin}
  mkdir -p etc/mp

  ln -sf usr/lib lib
  ln -sf usr/lib lib64
  
  ln -sf usr/bin bin
  ln -sf usr/sbin sbin

  cat > etc/passwd << "EOF"
root:x:0:0:root:/root:/bin/bash
bin:x:1:1:bin:/dev/null:/usr/bin/false
daemon:x:6:6:Daemon User:/dev/null:/usr/bin/false
messagebus:x:18:18:D-Bus Message Daemon User:/run/dbus:/usr/bin/false
uuidd:x:80:80:UUID Generation Daemon User:/dev/null:/usr/bin/false
nobody:x:65534:65534:Unprivileged User:/dev/null:/usr/bin/false
EOF

  cat > etc/group << "EOF"
root:x:0:
bin:x:1:daemon
sys:x:2:
kmem:x:3:
tape:x:4:
tty:x:5:
daemon:x:6:
floppy:x:7:
disk:x:8:
lp:x:9:
dialout:x:10:
audio:x:11:
video:x:12:
utmp:x:13:
usb:x:14:
cdrom:x:15:
adm:x:16:
messagebus:x:18:
input:x:24:
mail:x:34:
kvm:x:61:
uuidd:x:80:
wheel:x:97:
users:x:999:
nogroup:x:65534:
EOF

  cat > etc/hosts << EOF
127.0.0.1  localhost 
::1        localhost
EOF

  cp /etc/mp/cfg etc/mp/cfg
  #cp ~/.gnupg/pubring.kbx root/.gnupg/pubring.kbx
popd > /dev/null

export MP_ROOT="$TARGET"
  info "Syncing repositories"
  mp-sync
  check_ret "mp-sync command failed"

  info "Installing base system packages"
  mp-install acl attr coreutils binutils        \
    bash e2fsprogs udev file release            \
    findutils gawk grep gzip iana-etc           \
    inetutils intltool iproute kmod less        \
    openssl sed shadow tar tcl mandb            \
    man-pages tzdata util-linux which           \
    mp gettext iproute procps psmisc            \
    mandb kbd dbus vim nano libxml2 
  check_ret "mp-install command failed"
unset MP_ROOT
success "Installed the base system"

cat > $TARGET/etc/inputrc << "EOF"
# do not bell on tab-completion
#set bell-style none

set meta-flag on
set input-meta on
set convert-meta off
set output-meta on

$if mode=emacs

# for linux console and RH/Debian xterm
"\e[1~": beginning-of-line
"\e[4~": end-of-line
"\e[5~": beginning-of-history
"\e[6~": end-of-history
"\e[7~": beginning-of-line
"\e[3~": delete-char
"\e[2~": quoted-insert
"\e[5C": forward-word
"\e[5D": backward-word
"\e\e[C": forward-word
"\e\e[D": backward-word
"\e[1;5C": forward-word
"\e[1;5D": backward-word

# for rxvt
"\e[8~": end-of-line

# for non RH/Debian xterm, can't hurt for RH/DEbian xterm
"\eOH": beginning-of-line
"\eOF": end-of-line

# for freebsd console
"\e[H": beginning-of-line
"\e[F": end-of-line
$endif
EOF

cat > $TARGET/etc/shells << "EOF"
/bin/sh
/bin/bash 
EOF

info "Installing certs"
wget -q https://hg.mozilla.org/projects/nss/raw-file/tip/lib/ckfw/builtins/certdata.txt -O "$TARGET/certdata.txt"
matter-chroot $TARGET make-ca > /dev/null 
check_ret "Failed to run make-ca, install certs manually"
rm -f "$TARGET/certdata.txt"

info "Setup complete, feel free to chroot"
# user is expected to do the following:
# - configure /etc/resolv.conf
# - install systemd
# - systemd-machine-id-setup
# - systemctl preset-all
# - add hostname
# - create fstab
# - install kernel
# - install grub
# - config grub