#!/bin/bash

# matter-base | MatterLinux release archive build script
# MatterLinux 2023-2024 (https://matterlinux.xyz)

# 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/>.

#############################
## import common functions ##
#############################
location="$(dirname "${0}")"
location="$(realpath "${location}")"
commonsh="$(echo "${location}" | sed 's/\/bin/\/lib/g')/mtsc-common.sh"

source "${commonsh}"

if [ "${?}" != "0" ]; then
  echo "Failed to import mtsc-common"
  exit 1
fi

#################
## main script ##
#################
if [ "$EUID" -ne 0 ]; then
  error "You should run this script as root"
  exit 1
fi

if [ $# -eq 0 ]; then
  error "Please specify a name for the archive"
  exit 1
fi

name="${1}"
target="$(realpath "${1}")"

if [ -d "${target}" ]; then
  error "A directory with the specified archive name exists"
  exit 1
fi
mkdir "${target}"

if ! type matt > /dev/null; then
  error "matt is not installed, please install and configure matt"
  exit 1
fi

info "Creating directory structure"
pushd "${target}" > /dev/null
  install -Ddm755 {dev,proc,sys,run,tmp,root,home,boot,mnt}
  install -Ddm755 var/{log,mail,lib}
  install -Ddm755 usr/{bin,lib,sbin}
  install -Ddm755 var/lib/matt
  install -Ddm755 etc/matt

  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:!: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
popd > /dev/null

info "Syncing repositories"
matt sync --root "${target}"
check_ret "matt command failed"

info "Installing base system packages"
matt install --root "${target}" --yes  \
  acl attr coreutils binutils  \
  bash e2fsprogs file release  \
  findutils gawk grep gzip     \
  iana-etc inetutils intltool  \
  kmod less openssl sed shadow \
  tar tcl man-pages tzdata     \
  util-linux which matt        \
  gettext procps-ng psmisc kbd \
  dbus vim nano libxml2        \
  iproute2 man-db
check_ret "matt command failed"
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

cp "${target}/etc/skel/."* "${target}/root"

info "Installing certs"
wget --show-progress -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 "Running install scripts"
echo 'bash /var/lib/matt/data/scripts/*' > "${target}/install_scripts"
matter-chroot "${target}" bash /install_scripts > /dev/null
check_ret "Failed to run install scripts"
rm -r "${target}/var/lib/matt/data/scripts"
rm "${target}/install_scripts"

info "Setup complete, now creating the archive..."
pushd "${target}" > /dev/null
  tar czf ../${name}.tar.gz *
  check_ret "Failed to create the archive"
popd > /dev/null

success "Archive created, now cleaning up"
rm -rf "${target}" && success "Build completed"