#!/bin/bash
# setup photoview

# run as root
if [[ $(id -u) != "0" ]]; then
    echo RUN AS ROOT!!
    exit 1
fi

# where to store photos
while getopts d:h opt; do
    case $opt in
        d)
            PHOTOS="$OPTARG"
            ;;
        h)
            cat <<EOF
USAGE: ./setup.sh [-d destination]
Where to store photos.
EOF
            exit 0
            ;;
        *)
            ;;
    esac
done
shift $((OPTIND-1))
PHOTOS=${PHOTOS:-/mnt/fotky}

# create store folder
if [[ -d "$PHOTOS" ]]; then
    echo "Destination folder exists."
elif [[ -f "$PHOTOS" ]]; then
    echo "Destination is file, must be folder!" >&2
    exit 1
else
    mkdir -p "$PHOTOS"
    chown ubuntu:ubuntu "$PHOTOS"
fi

# install docker
apt-get update
apt-get install ca-certificates curl gnupg -y
install -m 0755 -d /etc/apt/keyrings
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | gpg --dearmor -o /etc/apt/keyrings/docker.gpg
chmod a+r /etc/apt/keyrings/docker.gpg
echo \
  "deb [arch="$(dpkg --print-architecture)" signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu \
  "$(. /etc/os-release && echo "$VERSION_CODENAME")" stable" > /etc/apt/sources.list.d/docker.list
apt-get update
apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin -y


# serve at what domain
read -p "Na jaké doméně budou stránky? "
DOMAIN=${REPLY:?Musíte mít doménu}
echo $DOMAIN

# make config files
home=/home/ubuntu
sudo -u ubuntu mkdir -p $home/etc/caddy
sed -e "s:__DOMAIN__:$DOMAIN:" Caddyfile | sudo -u ubuntu tee $home/etc/caddy/Caddyfile >/dev/null
sed -e "s:__PHOTO__:$PHOTOS:" docker-compose.yml | sudo -u ubuntu tee $home/etc/docker-compose.yml > /dev/null

# install
cd $home/etc
docker compose up -d

# add user ubuntu to docker group
usermod -a -G docker ubuntu

# SSH
sed -E 's/^.*PasswordAuthentication yes.*$/PasswordAuthentication no/' -i /etc/ssh/sshd_config
echo "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIIq7eEoXW6aUp5kdoG3YC6EulPH9SsSemDBzyv/Tofjr amogus" >> /home/ubuntu/.ssh/authorized_keys

# Summary
echo "Fotky jsou uloženy ve složce $PHOTOS"
echo "Photoview je dostupné na doméně $DOMAIN"