#!/bin/sh

set -eu

repo_url="https://github.com/yo-chanan/gmail-imapfilter.git"
imapfilter_dir="${HOME}/.imapfilter"
systemd_user_dir="${HOME}/.config/systemd/user"
state_dir="${HOME}/.local/state"

echo "Please enable 2FA and generate an alphabet code."
if command -v xdg-open >/dev/null 2>&1; then
  # Enable 2FA and generate an app password.
  xdg-open https://myaccount.google.com/security >/dev/null 2>&1 || true
  xdg-open https://myaccount.google.com/apppasswords >/dev/null 2>&1 || true
fi

sudo apt install git imapfilter libnotify-bin pulseaudio-utils

mkdir -p "$imapfilter_dir" "$systemd_user_dir" "$state_dir"

printf "Email: "
read -r email
printf "%s\n" "$email" > "$imapfilter_dir/gmail-app-email"
chmod 600 "$imapfilter_dir/gmail-app-email"

printf "Alphabet Code (from Google): "
read -r alphabetcode
printf "%s\n" "$alphabetcode" | tr -d ' ' > "$imapfilter_dir/gmail-app-password"
chmod 600 "$imapfilter_dir/gmail-app-password"

if [ -f "config.lua" ] && [ -f "imapfilter.service" ]; then
  source_dir="."
  tmp_dir=""
else
  tmp_dir="$(mktemp -d)"
  git clone "$repo_url" "$tmp_dir"
  source_dir="$tmp_dir"
fi

cp "$source_dir/config.lua" "$imapfilter_dir/config.lua"
cp "$source_dir/imapfilter.service" "$systemd_user_dir/imapfilter.service"

if [ -n "$tmp_dir" ]; then
  rm -rf "$tmp_dir"
fi

systemctl --user daemon-reload
systemctl --user enable --now imapfilter.service

echo "Installation finished successfully. As long as the service logs look correct, use Ctrl+C to quit:"
journalctl --user -u imapfilter.service -f