#!/usr/bin/env bash

set -eox pipefail

### Qubes dom0
if command -v qubesctl > /dev/null; then
  # The VM name that will manage the Ansible provisioning (for Qubes dom0)
  ANSIBLE_PROVISION_VM="provision"

  # Ensure sys-whonix is configured (for Qubes dom0)
  CONFIG_WIZARD_COUNT=0
  ENABLE_OBFSC='false'
  function configureWizard() {
    if xwininfo -root -tree | grep "Anon Connection Wizard"; then
      WINDOW_ID="$(xwininfo -root -tree | grep "Anon Connection Wizard" | sed 's/^ *\([^ ]*\) .*/\1/')"
      xdotool windowactivate "$WINDOW_ID" && sleep 1 && xdotool key 'Enter' && sleep 1 && xdotool key 'Tab Tab Enter' && sleep 24 && xdotool windowactivate "$WINDOW_ID" && sleep 1 && xdotool key 'Enter' && sleep 300
      qvm-shutdown --wait sys-whonix
      sleep 3
      qvm-start sys-whonix
      if xwininfo -root -tree | grep "systemcheck | Whonix" > /dev/null; then
        WINDOW_ID_SYSCHECK="$(xwininfo -root -tree | grep "systemcheck | Whonix" | sed 's/^ *\([^ ]*\) .*/\1/')"
        if xdotool windowactivate "$WINDOW_ID_SYS_CHECK"; then
          sleep 1
          xdotool key 'Enter'
        fi
      fi
    else
      sleep 3
      CONFIG_WIZARD_COUNT=$((CONFIG_WIZARD_COUNT + 1))
      if [[ "$CONFIG_WIZARD_COUNT" == '4' ]]; then
        echo "The sys-whonix anon-connection-wizard utility did not open."
      else
        echo "Checking for anon-connection-wizard again.."
        configureWizard
      fi
    fi
  }

  ### Ensure dom0 is updated
  if [ ! -f /root/dom0-updated ]; then
    sudo qubesctl --show-output state.sls update.qubes-dom0
    sudo qubes-dom0-update --clean -y
    touch /root/dom0-updated
  fi

  ### Ensure sys-whonix is running
  if ! qvm-check --running sys-whonix; then
    qvm-start sys-whonix --skip-if-running
    configureWizard > /dev/null
  fi

  ### Ensure TemplateVMs are updated
  if [ ! -f /root/templatevms-updated ]; then
    # timeout of 10 minutes is added here because the whonix-gw VM does not like to get updated
    # with this method. Anyone know how to fix this?
    sudo timeout 600 qubesctl --show-output --skip-dom0 --templates state.sls update.qubes-vm &> /dev/null || EXIT_CODE=$?
    while read RESTART_VM; do
      qvm-shutdown --wait "$RESTART_VM"
    done< <(qvm-ls --all --no-spinner --fields=name,state | grep Running | grep -v sys-net | grep -v sys-firewall | grep -v sys-whonix | grep -v dom0 | awk '{print $1}')
    sudo touch /root/templatevms-updated
  fi

  ### Ensure provisioning VM can run commands on any VM
  echo "/bin/bash" | sudo tee /etc/qubes-rpc/qubes.VMShell
  sudo chmod 755 /etc/qubes-rpc/qubes.VMShell
  echo "$ANSIBLE_PROVISION_VM"' dom0 allow' | sudo tee /etc/qubes-rpc/policy/qubes.VMShell
  echo "$ANSIBLE_PROVISION_VM"' $anyvm allow' | sudo tee -a /etc/qubes-rpc/policy/qubes.VMShell
  sudo chown "$(whoami):$(whoami)" /etc/qubes-rpc/policy/qubes.VMShell
  sudo chmod 644 /etc/qubes-rpc/policy/qubes.VMShell


  ### Create provisioning VM and initialize the provisioning process from there
  qvm-create --label red --template debian-11 "$ANSIBLE_PROVISION_VM" &> /dev/null || EXIT_CODE=$?
  qvm-volume extend "$ANSIBLE_PROVISION_VM:private" "40G"
  if [ -f ~/.vaultpass ]; then
    qvm-run "$ANSIBLE_PROVISION_VM" 'rm -f ~/QubesIncoming/dom0/.vaultpass'
    qvm-copy-to-vm "$ANSIBLE_PROVISION_VM" ~/.vaultpass
    qvm-run "$ANSIBLE_PROVISION_VM" 'cp ~/QubesIncoming/dom0/.vaultpass ~/.vaultpass'
  fi
  qvm-run --pass-io "$ANSIBLE_PROVISION_VM" 'curl -sSL https://install.doctor/start > ~/start.sh && bash ~/start.sh'
  exit 0
fi

### System package manager update / Homebrew dependencies
if ! command -v curl > /dev/null || ! command -v git > /dev/null; then
  if command -v apt-get > /dev/null; then
    # Debian / Ubuntu
    sudo apt-get update
    sudo apt-get install -y curl git
  elif command -v dnf > /dev/null; then
    # Fedora
    sudo dnf install -y curl git
  elif command -v yum > /dev/null; then
    # CentOS
    sudo yum install -y curl git
  elif command -v pacman > /dev/null; then
    # Archlinux
    sudo pacman update
    sudo pacman -Sy curl git
  elif command -v zypper > /dev/null; then
    # OpenSUSE
    sudo zypper install -y curl git nodejs
  elif command -v apk > /dev/null; then
    # Alpine
    apk add curl git
  elif [ -d /Applications ] && [ -d /Library ]; then
    # macOS
    sudo xcode-select -p >/dev/null 2>&1 || xcode-select --install
  elif command -v nix-env > /dev/null; then
    # NixOS
    echo "TODO - Add support for NixOS"
  elif [[ "$OSTYPE" == 'freebsd'* ]]; then
    # FreeBSD
    echo "TODO - Add support for FreeBSD"
  elif command -v pkg > /dev/null; then
    # Termux
    echo "TODO - Add support for Termux"
  elif command -v xbps-install > /dev/null; then
    # Void
    echo "TODO - Add support for Void"
  elif [[ "$OSTYPE" == 'cygwin' ]] || [[ "$OSTYPE" == 'msys' ]] || [[ "$OSTYPE" == 'win32' ]]; then
    # Windows
    choco install -y curl git node
  fi
fi

### Install Homebrew
ensurePackageManagerHomebrew() {
  if ! command -v brew > /dev/null; then
    if command -v sudo > /dev/null && sudo -n true; then
      echo | bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
    else
      logg info 'Homebrew is not installed. Password may be required.'
      bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)" || BREW_EXIT_CODE="$?"
      if [ -n "$BREW_EXIT_CODE" ]; then
        if command -v brew > /dev/null; then
          logg warn 'Homebrew was installed but part of the installation failed. Attempting to fix..'
          BREW_DIRS="share/man share/doc share/zsh/site-functions etc/bash_completion.d"
          for BREW_DIR in $BREW_DIRS; do
            if [ -d "$(brew --prefix)/$BREW_DIR" ]; then
              sudo chown -R "$(whoami)" "$(brew --prefix)/$BREW_DIR"
            fi
          done
          brew update --force --quiet
        fi
      fi
    fi
  fi
}
ensurePackageManagerHomebrew

### Install installer dependencies via Homebrew
installBrewPackage() {
  if ! command -v "$1" > /dev/null; then
    brew install "$1"
  fi
}
if command -v brew > /dev/null; then
  installBrewPackage chezmoi
  installBrewPackage node
  installBrewPackage zx
fi

### Ensure source files are present
if [ -d /usr/local/src/hiawatha ] && [ ! -w /usr/local/src/hiawatha ]; then
  sudo chown -Rf "$USER":"$(id -g -n)" /usr/local/src/hiawatha
fi
if [ -d /usr/local/src/hiawatha/.git ]; then
  git config pull.rebase false
  git pull origin master
else
  rm -rf /usr/local/src/hiawatha
  sudo git clone https://gitlab.com/megabyte-labs/dotfiles.git /usr/local/src/hiawatha
  chown -Rf "$USER":"$(id -g -n)" /usr/local/src/hiawatha
fi

### Copy folders
find /usr/local/src/hiawatha -maxdepth 1 -mindepth 1 -type d | while read FOLDER; do
  BASENAME="$(basename "$FOLDER")"
  # Prevent initial-scaffolding of OS-specific files since Chezmoi will handle them
  if [[ "$BASENAME" != 'AppData' ]] && [[ "$BASENAME" != 'Library' ]]; then
    if [ ! -d "$HOME/$BASENAME" ]; then
      mkdir -p "$HOME/$BASENAME"
    fi
    cp -rf "$FOLDER/"* "$HOME/$BASENAME"
  fi
done

### Copy files
find /usr/local/src/hiawatha -maxdepth 1 -mindepth 1 -type f | while read FILE; do
  BASENAME="$(basename "$FILE")"
  # Prevent repository-specific files from being copied over to user's HOME
  if [[ "$BASENAME" != *'.md' ]] && [[ "$BASENAME" != *'.sh' ]] && [ "$BASENAME" != 'logo.png' ] && [ "$BASENAME" != '.gitlab-ci.yml' ]; then
    cp "$FILE" "$HOME/$BASENAME"
    chmod 600 "$HOME/$BASENAME"
  fi
done

### Ensure ~/.local/bin files are executable
find "$HOME/.local/bin" -maxdepth 1 -mindepth 1 -type f | while read BINFILE; do
  chmod +x "$BINFILE"
done

### Chezmoi
echo "Now run chezmoi init followed by chezmoi apply"