#!/usr/bin/env bash

# ─< Check if the given command exists silently >─────────────────────────────────────────
command_exists() {
  command -v "$@" >/dev/null 2>&1
}

# WHY:
# This import will give you the following variables:
# _sudo="sudo -E" <- only if non root user
# distro = <distro name, like 'arch', 'debian', 'fedora'..>
# arch = bool
# fedora = bool
# opensuse =  bool....
# You can then use it for, `if $arch; then`
# Also this gives you the _install command, which installs a package pased on the packagemanager/distro used.
# CAUTION:
# This only wokrs for generic package names, like neovim, or vim, or tmux etc..
# not every package packagemanager has the same packagenames for their packages..
getImports() {
  i="https://git.k4li.de/scripts/imports/raw/branch/main/distros.sh"
  import="$(mktemp)"
  echo "importing $i into $import"
  if command_exists curl; then
    curl -fsSL $i -o $import
  elif command_exists wget; then
    wget $i -o $import
  else
    echo "curl/wget is required, but missing.."
    exit 1
  fi

  source "$import"

  sleep 0.3

  rm "$import" &&
    echo_warning "cleaned $import"
}

init_docker() {
  if command -v docker >/dev/null 2>&1; then
    echo_info "Docker was installed correctly. Do you want to add $(whoami) to the docker group? (y/n)"
    read -r dgroup </dev/tty
    case "$dgroup" in
    [Yy])
      $_sudo usermod -aG docker "$(whoami)"
      ;;
    esac
    sleep 1
    $_sudo systemctl enable --now docker
    echo_info "$(whoami) is now part of the docker group. Restart your session to enable the changes. Also docker was addet as a service. Should autostart from now on."
  else
    echo_error "Something went wrong!"
  fi
}

_arch() {
  echo_info "executing arch"
  sleep 2
  _install docker docker-compose --noconfirm
}

_debian() {
  if ! $trixie; then
    echo_info "executing debian"
    sleep 2
    $_sudo apt-get update &&
      $_sudo apt-get install -y ca-certificates curl &&
      $_sudo install -m 0755 -d /etc/apt/keyrings &&
      $_sudo curl -fsSL https://download.docker.com/linux/debian/gpg -o /etc/apt/keyrings/docker.asc &&
      $_sudo chmod a+r /etc/apt/keyrings/docker.asc &&
      sleep 0.5
    if [ "$VERSION_CODENAME" == "trixie" ]; then
      VERSION_CODENAME="bookworm"
    fi
    echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/debian \
    $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | $_sudo tee /etc/apt/sources.list.d/docker.list >/dev/null

    echo_info "Addet repository. Updating and installing now.."
    sleep 1
    $_sudo apt-get update
    checkAndInstall "docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin"
  else
    echo_info "executing trixie.."
    _install docker.io docker-compose
  fi
}

_ubuntu() {
  echo_info "executing ubuntu"
  sleep 2
  $_sudo apt-get update &&
    $_sudo apt-get install -y ca-certificates curl &&
    $_sudo install -m 0755 -d /etc/apt/keyrings &&
    $_sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc &&
    $_sudo chmod a+r /etc/apt/keyrings/docker.asc
  echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/ubuntu \
    $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | $_sudo tee /etc/apt/sources.list.d/docker.list >/dev/null

  echo_info "Addet repository. Updating and installing now.."
  sleep 0.5
  $_sudo apt-get update
  checkAndInstall "docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin"
}

_fedora() {
  echo_info "executing fedora"
  sleep 2
  _install dnf-plugins-core
  $_sudo dnf config-manager --add-repo https://download.docker.com/linux/fedora/docker-ce.repo
  checkAndInstall "docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin"
}

main() {
  case "$distro" in
  arch) _arch ;;
  debian) _debian ;;
  ubuntu) _ubuntu ;;
  fedora) _fedora ;;
  *) echo "$distro is not supported by this script" ;;
  esac
}

if getImports; then
  case "$1" in
  --silent | -s)
    echo_warning "Executing silently!"
    echo_info "Executing $distro"
    case "$distro" in
    arch) silentexec _arch ;;
    debian) silentexec _debian ;;
    ubuntu) silentexec _ubuntu ;;
    fedora) silentexec _fedora ;;
    *)
      echo "$distro is not supported by this script"
      exit 1
      ;;
    esac

    init_docker
    ;;
  *)
    if main; then
      init_docker
    fi
    ;;
  esac
fi