run

#!/bin/bash

set -e

if [[ $EUID -ne 0 ]]; then
    echo Run as root!
    exit 1
fi

function command_exists() {
    builtin type -P "$1" &> /dev/null || eval "$1" &> /dev/null
}

# docker compose v2 is not a python package (`docker-compose`), 
# but a reimplementation in Go (`docker compose`). 
# Either of them works for us.
POSSIBLE_DOCKER_COMPOSE=( "docker-compose" "docker compose" )

for cmd in "${POSSIBLE_DOCKER_COMPOSE[@]}"; do
    if command_exists "$cmd"; then
        echo "'$cmd' exists, using that."
        export DC_CMD="$cmd"
        break
    fi
done

if [[ -z "$DC_CMD" ]]; then
    echo Docker compose doesn\'t seem to be installed.
    exit 1
fi

if [ -z "$COMPOSEFLAGS" ]; then
  COMPOSEFLAGS=("-d" "--remove-orphans")
fi

if [ ! -e ./.env ]; then
  read -p 'Domain that will serve the mirror: ' domain
  echo "DOMAIN_NAME=$domain" > ./.env
  read -p "Automatically manage web server (letsencrypt, cloudflare tunnels) y/N " -n 1 -r
  echo
  if [[ $REPLY =~ ^[Yy]$ ]]; then
    read -p "Use cloudflare tunnels y/N " -n 1 -r
    echo
    if [[ $REPLY =~ ^[Yy]$ ]]
    then
      echo "USE_TUNNELS=true" >> ./.env
      echo "SSL_FILE=/dev/null" >> ./.env
    else
      read -p 'Your email address: ' email
      echo "EMAIL=$email" >> ./.env
    fi
  else
    read -p "Webroot path (optional): " -r webroot
    if [ ! -z "$webroot" ]; then
      echo "WEBROOT=$webroot" >> ./.env
    fi
    echo "NO_WEB=true" >> ./.env
  fi
fi

source .env

if [ "$USE_TUNNELS" == "true" ]; then
  if [ ! -e "./data/cloudflared/home/.cloudflared/cert.pem" ]; then
    "$DC_CMD" -f docker-compose.yml run --rm cloudflared login
    "$DC_CMD" -f docker-compose.yml run --rm cloudflared --origincert /root/.cloudflared/cert.pem tunnel create $DOMAIN_NAME
    "$DC_CMD" -f docker-compose.yml run --rm cloudflared --origincert /root/.cloudflared/cert.pem tunnel route dns $DOMAIN_NAME $DOMAIN_NAME
  fi
elif [ "$NO_WEB" != "true" ]; then
  if [ ! -e ./data/letsencrypt/etc/renewal/chaotic.conf ]; then
    docker run -p 80:80 -p 443:443 --rm -v "$PWD/data/letsencrypt/etc:/etc/letsencrypt" -v "$PWD/data/letsencrypt/var:/var/lib/letsencrypt" certbot/certbot:${LETSENCRYPT_TAG:-latest} certonly --standalone --non-interactive --agree-tos --cert-name chaotic -n -m "$EMAIL" -d "$DOMAIN_NAME"
  fi
fi

if [ ! -e ./http-root/chaotic-aur ] && [ "$NO_WEB" != "true" ]; then
  # Convert legacy
  if [ -d ./repo ]; then
    ./stop
    mkdir ./http-root
    mv ./repo ./http-root/chaotic-aur
  else
    mkdir -p ./http-root/chaotic-aur/.stfolder
    chown -R 1000:1000 ./http-root/chaotic-aur/
  fi
fi

if [ ! -e ./data/syncthing/config.xml ]; then
  mkdir -p ./data/syncthing
  cp ./preset/syncthing-config.xml ./data/syncthing/config.xml
  chown -R 1000:1000 ./data/syncthing
fi

gawk -i inplace '/<folder id="jhcrt-m2dra"/ {
  begin = 1
}
/<minDiskFree unit="">0<\/minDiskFree>/ {
  if (begin) {
    print "        <minDiskFree unit=\"%\">1</minDiskFree>"
    next
  } else {
    print
  }
}
/<\/folder>/ {
  begin = 0
}
1' ./data/syncthing/config.xml

if [ ! -z "$UPDATE_IMAGES" ]; then
  COMPOSEFLAGS+=("--pull" "always")
fi

if [ "$NO_WEB" == "true" ]; then
  "$DC_CMD" up "${COMPOSEFLAGS[@]}"
elif [ "$USE_TUNNELS" == "true" ]; then
  "$DC_CMD" --profile cloudflared up "${COMPOSEFLAGS[@]}"
else
  "$DC_CMD" --profile letsencrypt up "${COMPOSEFLAGS[@]}"
fi