#!/bin/sh

dotfiles="https://git.amolinae.com/amolinae06/dotfiles.git"
software="https://git.amolinae.com/amolinae06/installer/raw/branch/main/software.csv"
devsoftware="https://git.amolinae.com/amolinae06/installer/raw/branch/main/devware.csv"

apk_install(){
  echo "installing $1"; apk add "$1" >/dev/null 2>&1
}

bwroot_apk_install(){
  echo "installing $1 on chroot"
  ./sbin/apk.static -X https://dl-cdn.alpinelinux.org/alpine/v3.20/main \
  -U -p alpchroot/ add "$1" >/dev/null 2>&1
}

git_install(){
  echo "cloning from $1"; su - "$user" -c "cd ~/.local/src && git clone \"$1\"" >/dev/null 2>&1
}

deploy_dotfiles(){
  printf "Deploying dotfiles...\n"
  su - $user -c "git clone $dotfiles && cd dotfiles && rm -rf .git .gitmodules README.md && cp -r .cache .config .local .zprofile /home/$user/ && cd && rm -rf dotfiles"
}

read_software(){
  ([ -f "$1" ] && cp "$1" /tmp/temp.csv) || wget -qO- "$1" > /tmp/temp.csv

  tail -n +2 "/tmp/temp.csv" | sed -E ':a; s/("[^"]*),([^"]*")/\1\2/; ta' | while IFS=',' read -r NAME DESCRIPTION GIT GIT_URL; do
    case "$GIT" in
      "N") apk_install $NAME ;;
      "Y") git_install "$GIT_URL" ;;
      "D") bwroot_apk_install $NAME ;;
      *) echo "ERROR: failed to determine $NAME."; exit 1 ;;
    esac
  done

  rm "/tmp/progs.csv"
  printf "Successfully installed all software!\n"
}

setup_greetd(){
  printf "Setting up greetd\n"
  
  # Check if greetd directory exists, if not, create it.
  [ -d "/etc/greetd" ] || mkdir "/etc/greetd"

  cat <<EOF > /etc/greetd/config.toml
[terminal]
vt = 7

[default_session]
command = "tuigreet -t -r --cmd /home/$user/.local/bin/dwllaunch"
user = "greetd"
EOF

  rc-update add greetd default
  printf "Finished setting up greetd.\n"
}

setup_shell(){
  sed -i "/^$user:/s#:[^:]*\$#:/bin/zsh#" /etc/passwd
  mkdir -p "/home/$user/.cache/zsh"
  touch "/home/$user/.cache/zsh/history"
  chown -R "$user":"$user" "/home/$user/.cache/"
  echo "changed "$user"'s shell to zsh"
}

setup_bluetooth(){
  printf "Setting up bluetooth\n"
  rc-update add bluetooth default
  printf "Done.\n"
}

setup_home(){
  su - $user -c "xdg-user-dirs-update && mkdir ~/Documents/Miscellaneous"
}

setup_chroot(){
  printf "Setting up chroot\n"
  apk_install curl
  cd "/home/$user/Documents/Miscellaneous"
  mkdir alpchroot
  curl -LO https://dl-cdn.alpinelinux.org/alpine/v3.20/main/x86_64/apk-tools-static-2.14.4-r1.apk
  tar -xzf apk-tools-static-*.apk
  ./sbin/apk.static -X https://dl-cdn.alpinelinux.org/alpine/v3.20/main -U --allow-untrusted -p alpchroot/ --initdb add alpine-base
  mount -o bind /dev alpchroot/dev
  mount -t proc none alpchroot/proc
  mount -o bind /sys alpchroot/sys
  cp -L /etc/resolv.conf alpchroot/etc/
  chown -R "$user":"$user" alpchroot/ >/dev/null 2>&1 
  mkdir -p alpchroot/etc/apk
  cp /etc/apk/repositories alpchroot/etc/apk/repositories
  apk del curl
}

check_root(){
  if [ "$(id -u)" -ne 0 ]; then
    echo "ERROR: you must run this script as root."; exit 1
  fi
}

get_user(){
  printf "Please enter the name of your user: "
  read -r user
}

check_root
echo "Welcome to the installer"
apk_install git
get_user
read_software "$software"
setup_home
deploy_dotfiles
setup_greetd
setup_shell
setup_bluetooth
setup_chroot
read_software "$devsoftware"