#!/bin/bash

# Source
# Docker - Install using the repository
# https://docs.docker.com/install/linux/docker-ce/ubuntu/
#
# Onlyoffice - Docker
# https://helpcenter.onlyoffice.com/server/docker/document/docker-installation.aspx

toolName="onlyoffice"
dockerDeps="apt-transport-https ca-certificates curl gnupg-agent software-properties-common"
dockerGpgKeyUrl="https://download.docker.com/linux/ubuntu/gpg"
dockerRepoUrl="https://download.docker.com/linux/ubuntu"
dockerPackages="docker-ce docker-ce-cli containerd.io"
# Entry in config value $dockerDefaultConf
dockerDnsEntry=

# Get script working directory
# (when called from a different directory)
WDIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >>/dev/null 2>&1 && pwd )"
CONFIG_FILE="$WDIR/${toolName}.cfg"
CONFIG_FILE_DEFAULT="${CONFIG_FILE}.example"

step_config() {
  if [ ! -s "$CONFIG_FILE" ] && [ ! -s "$CONFIG_FILE_DEFAULT" ] ; then
    echoerr " [E] No configuration \"$CONFIG_FILE_DEFAULT\" or \"$CONFIG_FILE\" found"
    exit 1;
  fi
  if [ -s "$CONFIG_FILE" ] ; then
    . "$CONFIG_FILE"
  else
    echoerr " [W] User configuration \"$CONFIG_FILE\" not found. Using \"$CONFIG_FILE_DEFAULT\""
    . "$CONFIG_FILE_DEFAULT"
  fi
  dockerDnsEntry="DOCKER_OPTS=\"--dns $dockerDns1 --dns $dockerDns2\""
}

step_1_info() { echo "Install Docker dependencies"; }
step_1_alias() { ALIAS="install"; }
step_1() {
  local aptOption=
  exe apt update
  if [ $QUIET -ne 0 ] ; then
    aptOption="-y"
  else
    aptOption=""
  fi
  exe apt install $dockerDeps $aptOption
  endReturn -o $? "Docker dependencies installation failed"
}

step_2_info() { echo "Install Docker repository"; }
step_2() {
  # Add official docker GPG key
  exep "curl -fsSL ${dockerGpgKeyUrl} | sudo apt-key add -"

  # Add stable repository
  exe add-apt-repository "deb [arch=amd64] ${dockerRepoUrl} $(lsb_release -cs) stable"
  endReturn -o $? "Failed to add Docker repository"
  exe apt update
  endReturn -o $? "Docker repository not available"
}

step_3_info() { echo "Install latest Docker version"; }
step_3() {
  # Install the latest version
  if [ $QUIET -ne 0 ] ; then
    aptOption="-y"
  else
    aptOption=""
  fi
  exe apt install $dockerPackages $aptOption

  echo " [I] You may test the installation by running:"
  echo "     sudo docker run hello-world"
}

step_4_info() { echo "Replace Docker DNS entry"; }
step_4() {
  exe sed -i "s/\(^#DOCKER_OPTS=.*\)$/#\1\n${dockerDnsEntry}/" "$dockerDefaultConf"
  exep "grep \"${dockerDns1}\" \"$dockerDefaultConf\" >>/dev/null"
  if [ $? -ne 0 ] ; then
    echoerr " [W] Docker dns entry could not be changed"
  fi
}

step_5_info() { 
  echo "Install/start onlyoffice docker container <SECRET>."
  echoinfo "If <SECRET> is empty, user input will be available if not run --quiet."
  echoinfo "$toolName will be run unsecured if no secret was provied."
}
step_5_alias() { ALIAS="startoo"; }
step_5() {
  local options=
  local secret=

  if [ ! -z "$2" ] ; then
    secret="$2"
  elif [ $QUIET -eq 0 ] ; then
    exe read -s -p "JWT Secret: " secret
  fi

  # The correct expansion for missing SECRET or SECRET with spaces is not possible.
  # Therefore docker without secret needs to be called separately
  if [ ! -z "$secret" ] ; then
    options="-e JWT_ENABLED=true -e JWT_SECRET="
    # This is the only way to provide SECRET($2) to docker command line which handles all types of characters.
    exe docker run -i -t -d -p ${onlyOfficePort}:80 ${options}"$secret" --restart=always onlyoffice/documentserver
  else
    echoerr " [W] Running $toolName without JWT (JSON Web Tokens)"
    exe docker run -i -t -d -p ${onlyOfficePort}:80 --restart=always onlyoffice/documentserver
  fi

  unset secret
}

step_7_info() { echo "Upgrade $toolName to latest version"; }
step_7_alias() { ALIAS="upgrade"; }
step_7() {
  # get container ID
  local containerId=$(docker ps -aqf ancestor="$dockerImageName")
  if [ ! -z $containerId ] ; then
    exe docker stop $containerId
    exe docker rm $containerId
  else
    echoerr " [W] No $toolName Docker container found"
  fi
  exe docker pull $dockerImageName
  endReturn -o $? "Error getting $toolName Docker update"

  step startoo
}

step_10_info() { echo "List running Docker container"; }
step_10_alias() { ALIAS="ls"; }
step_10() {
  exe docker container ls
  echo
  echo " [I] To stop a container run:"
  echo "     docker stop [CONTAINER ID]"
  echo "     e.g.: docker stop 70f1c5c81be2"
}

step_12_info() { 
  echo "Clean unused Docker data"
  echoinfo "(unused containers, dangling images, networks, build cache and volumes)"
}
step_12_alias() { ALIAS="prune"; }
step_12() {
  exe docker system df
  exe docker system prune
  exe docker volume prune
}

step_100_info() { echo "Uninstall Docker"; }
step_100_alias() { ALIAS="uninstall"; }
step_100() {
  exe apt-get purge docker-ce
}

step_102_info() { echo "Purge images, containers, volumes, or customized configuration files"; }
step_102_alias() { ALIAS="purge"; }
step_102() {
  exe read -p "Are you sure y/[n]? " answer
  case $answer in
    [yY])
      exe service docker stop
      exe rm -rf /var/lib/docker 
      ;;
    *)
      return 0
      ;;
  esac
}

VERSION_SEQREV=8
. sequencer.sh