#!/usr/bin/env bash
NEXTCLOUD_VER="25"

for bin in curl dirmngr; do
  if [[ -z $(which ${bin}) ]]; then echo "Cannot find ${bin}, exiting..."; exit 1; fi
done

[[ -z ${1} ]] && NC_HELP=y

while [ "$1" != '' ]; do
  case "${1}" in
    -p|--purge) NC_PURGE=y && shift;;
    -i|--install) NC_INSTALL=y && shift;;
    -r|--resetpw) NC_RESETPW=y && shift;;
    -h|--help) NC_HELP=y && shift;;
    *) echo "Unknown parameter: ${1}" && shift;;
  esac
done

if [[ ${NC_HELP} == "y" ]]; then
  printf 'Usage:\n\n'
  printf '  -p|--purge\n    Purge Nextcloud\n'
  printf '  -i|--install\n    Install Nextcloud\n'
  printf '  -r|--resetpw\n    Reset password\n\n'
  exit 0
fi

[[ ${NC_PURGE} == "y" ]] && [[ ${NC_INSTALL} == "y" ]] && { echo "Cannot use -p and -i at the same time!"; exit 1; }
[[ ${NC_PURGE} == "y" ]] && [[ ${NC_RESETPW} == "y" ]] && { echo "Cannot use -p and -r at the same time!"; exit 1; }

SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
cd ${SCRIPT_DIR}/../
source mailcow.conf

if [[ ${NC_PURGE} == "y" ]]; then
  read -r -p "Are you sure you want to purge Nextcloud? [y/N] " response
  response=${response,,}
  if [[ ! "$response" =~ ^(yes|y)$ ]]; then
    echo "OK, aborting."
    exit 1
  fi

  docker exec -it $(docker ps -f name=mysql-mailcow -q) mysql -uroot -p${DBROOT} -e \
    "$(docker exec -it $(docker ps -f name=mysql-mailcow -q) mysql -uroot -p${DBROOT} -e "SELECT IFNULL(GROUP_CONCAT('DROP TABLE ', TABLE_SCHEMA, '.', TABLE_NAME SEPARATOR ';'),'SELECT NULL;') FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME LIKE 'oc_%' AND TABLE_SCHEMA = '${DBNAME}';" -BN)"
  docker exec -it $(docker ps -f name=redis-mailcow -q) /bin/sh -c ' cat <<EOF | redis-cli
SELECT 10
FLUSHDB
EOF
'
  if [ -d ./data/web/nextcloud/config ]; then
    mv ./data/web/nextcloud/config/ ./data/conf/nextcloud-config-folder-$(date +%s).bak
  fi
  [[ -d ./data/web/nextcloud ]] && rm -rf ./data/web/nextcloud

  [[ -f ./data/conf/nginx/site.nextcloud.custom ]] && mv ./data/conf/nginx/site.nextcloud.custom ./data/conf/nginx/site.nextcloud.custom-$(date +%s).bak
  [[ -f ./data/conf/nginx/nextcloud.conf ]] && mv ./data/conf/nginx/nextcloud.conf ./data/conf/nginx/nextcloud.conf-$(date +%s).bak

  docker restart $(docker ps -aqf name=nginx-mailcow)

elif [[ ${NC_UPDATE} == "y" ]]; then
  exit;
  read -r -p "Are you sure you want to update Nextcloud? [y/N] " response
  response=${response,,}
  if [[ ! "$response" =~ ^(yes|y)$ ]]; then
    echo "OK, aborting."
    exit 1
  fi

  if [ ! -f data/web/nextcloud/occ ]; then
    echo "Nextcloud occ not found. Is Nextcloud installed?"
    exit 1
  fi
  if ! grep -q 'installed: true' <<<$(docker exec -it -u www-data $(docker ps -f name=php-fpm-mailcow -q) bash -c "/web/nextcloud/occ --no-warnings status"); then
    echo "Nextcloud seems not to be installed."
    exit 1
  elif ! grep -q 'version: 20\.' <<<$(docker exec -it -u www-data $(docker ps -f name=php-fpm-mailcow -q) bash -c "/web/nextcloud/occ --no-warnings status"); then
    echo "Cannot upgrade to new major version, please update manually."
    exit 1
  else
    curl -L# -o nextcloud.tar.bz2 "https://download.nextcloud.com/server/releases/latest-$NEXTCLOUD_VER.tar.bz2" || { echo "Failed to download Nextcloud archive."; exit 1; } \
      && tar -xjf nextcloud.tar.bz2 -C ./data/web/ \
      && rm nextcloud.tar.bz2 \
      && mkdir -p ./data/web/nextcloud/data \
      && chmod +x ./data/web/nextcloud/occ \
       docker exec -it $(docker ps -f name=php-fpm-mailcow -q) bash -c "chown www-data:www-data -R /web/nextcloud" \
       docker exec -it -u www-data $(docker ps -f name=php-fpm-mailcow -q) bash -c "/web/nextcloud/occ --no-warnings upgrade"
  fi

elif [[ ${NC_INSTALL} == "y" ]]; then
  NC_SUBD=
  while [[ -z ${NC_SUBD} ]]; do
    read -p "Subdomain to run Nextcloud from [format: nextcloud.domain.tld]: " NC_SUBD
  done
  if ! ping -q -c2 ${NC_SUBD} > /dev/null 2>&1 ; then
    read -p "Cannot ping subdomain, continue anyway? [y|N] " NC_CONT_FAIL
    [[ ! ${NC_CONT_FAIL,,} =~ ^(yes|y)$ ]] && { echo "Ok, exiting..."; exit 1; }
  fi

  ADMIN_NC_PASS=$(</dev/urandom tr -dc A-Za-z0-9 | head -c 28)

  curl -L# -o nextcloud.tar.bz2 "https://download.nextcloud.com/server/releases/latest-$NEXTCLOUD_VER.tar.bz2" || { echo "Failed to download Nextcloud archive."; exit 1; } \
    && tar -xjf nextcloud.tar.bz2 -C ./data/web/ \
    && rm nextcloud.tar.bz2 \
    && mkdir -p ./data/web/nextcloud/data \
    && chmod +x ./data/web/nextcloud/occ

  docker exec -it $(docker ps -f name=php-fpm-mailcow -q) /bin/bash -c "chown -R www-data:www-data /web/nextcloud"
  docker exec -it -u www-data $(docker ps -f name=php-fpm-mailcow -q) /web/nextcloud/occ --no-warnings maintenance:install \
    --database mysql \
    --database-host mysql \
    --database-name ${DBNAME} \
    --database-user ${DBUSER} \
    --database-pass ${DBPASS} \
    --admin-user admin \
    --admin-pass ${ADMIN_NC_PASS} \
      --data-dir /web/nextcloud/data

  docker exec -it -u www-data $(docker ps -f name=php-fpm-mailcow -q) bash -c "/web/nextcloud/occ --no-warnings config:system:set redis host --value=redis --type=string; \
    /web/nextcloud/occ --no-warnings config:system:set redis port --value=6379 --type=integer; \
    /web/nextcloud/occ --no-warnings config:system:set redis timeout --value=0.0 --type=integer; \
    /web/nextcloud/occ --no-warnings config:system:set redis dbindex --value=10 --type=integer; \
    /web/nextcloud/occ --no-warnings config:system:set memcache.locking --value='\OC\Memcache\Redis' --type=string; \
    /web/nextcloud/occ --no-warnings config:system:set memcache.local --value='\OC\Memcache\Redis' --type=string; \
    /web/nextcloud/occ --no-warnings config:system:set trusted_domains 1 --value=${NC_SUBD}; \
    /web/nextcloud/occ --no-warnings config:system:set trusted_proxies 0 --value=${IPV6_NETWORK}; \
    /web/nextcloud/occ --no-warnings config:system:set trusted_proxies 1 --value=${IPV4_NETWORK}.0/24; \
    /web/nextcloud/occ --no-warnings config:system:set overwritehost --value=${NC_SUBD}; \
    /web/nextcloud/occ --no-warnings config:system:set overwriteprotocol --value=https; \
    /web/nextcloud/occ --no-warnings config:system:set overwritewebroot --value=/; \
    /web/nextcloud/occ --no-warnings config:system:set mail_smtpmode --value=smtp; \
    /web/nextcloud/occ --no-warnings config:system:set mail_smtpauthtype --value=LOGIN; \
    /web/nextcloud/occ --no-warnings config:system:set mail_from_address --value=nextcloud; \
    /web/nextcloud/occ --no-warnings config:system:set mail_domain --value=${MAILCOW_HOSTNAME}; \
    /web/nextcloud/occ --no-warnings config:system:set mail_smtphost --value=postfix; \
    /web/nextcloud/occ --no-warnings config:system:set mail_smtpport --value=588; \
    /web/nextcloud/occ --no-warnings db:convert-filecache-bigint -n"

    # Not installing by default, broke too often
    #/web/nextcloud/occ --no-warnings app:install user_external; \
    #/web/nextcloud/occ --no-warnings config:system:set user_backends 0 arguments 0 --value={dovecot:143/imap/tls/novalidate-cert}; \
    #/web/nextcloud/occ --no-warnings config:system:set user_backends 0 class --value=OC_User_IMAP; \

    cp ./data/assets/nextcloud/nextcloud.conf ./data/conf/nginx/
    sed -i "s/NC_SUBD/${NC_SUBD}/g" ./data/conf/nginx/nextcloud.conf

  echo "Restarting Nginx..."
  docker restart $(docker ps -aqf name=nginx-mailcow)

  echo "Login as admin with password: ${ADMIN_NC_PASS}"

elif [[ ${NC_RESETPW} == "y" ]]; then
    printf 'You are about to set a new password for a Nextcloud user.\n\nDo not use this option if your Nextcloud is configured to use mailcow for authentication.\nSet a new password for the corresponding mailbox in mailcow, instead.\n\n'
    read -r -p "Continue? [y/N] " response
    response=${response,,}
    if [[ ! "$response" =~ ^(yes|y)$ ]]; then
      echo "OK, aborting."
      exit 1
    fi

    NC_USER=
    while [[ -z ${NC_USER} ]]; do
      read -p "Enter the username: " NC_USER
    done
    docker exec -it -u www-data $(docker ps -f name=php-fpm-mailcow -q) /web/nextcloud/occ user:resetpassword ${NC_USER}

fi