#!/bin/bash

toolName=friendica
latestUrl="https://api.github.com/repos/friendica/friendica/releases/latest"

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

step_config() {
  initSeqConfig "$CONFIG_FILE_NAME" "$CONFIG_FILE_TEMPLATE"
  if [ $? -eq 0 ] ; then
    CONFIG=1
  fi
}

step_20_info() { 
  echo -n "Create a backup [FRIENDICA ROOT]"
  if [ $CONFIG -ne 0 ] ; then
    echo " at $FR_BACKUP"
  else
    echo
  fi
}
step_20_alias() { ALIAS="backup"; }
step_20() {
  shift
  local tempRoot=
  if [ $CONFIG -eq 0 ] ; then
    echoerr " [E] No configuration file found"
    return 1
  fi
  if [ ! -z $FR_BACKUP ] ; then
    exe mkdir -p "$FR_BACKUP"
  fi
  if [ ! -z $1 ] ; then
    tempRoot="$1"
  else
    tempRoot="$FR_LOC"
  fi

  exe $WDIR/mysql.sh -qq backup "$FR_DATABASE" "$FR_BACKUP"
  local wwwBackup="$FR_BACKUP/${toolName}_www_`date +%Y%m%d-%H%M%S`.tar.gz"
  local dataBackup="$FR_BACKUP/${toolName}_data_`date +%Y%m%d-%H%M%S`.tar.gz"
  echo " [I] Backing up webserver directory to $wwwBackup"
  exe cd "$tempRoot/.."
  exe tar czf "$wwwBackup" $(basename "$tempRoot")
  echo " [I] Backing up data directory to $dataBackup"
  exe cd "$FR_LOC_DATA/.."
  exe tar czf "$dataBackup" $(basename "$FR_LOC_DATA")
}

step_22_info() {
  shift
  if [ -z $1 ] ; then
    echo -n "Get latest version from github"
    if [ $CONTEXT_HELP -eq 0 ] ; then
      echo ": $(curl --silent "$latestUrl" | grep -Po '"tag_name": "\K.*?(?=")')"
    else
      echo " [CUSTOM VERSION]"
    fi
  else
    echo "Get version $1 from github"
  fi
}
step_22_alias() { ALIAS="upgrade"; }
step_22() {
  shift # don't need step number
  local latestVersion=
  if [ ! -z $1 ] ; then
    latestVersion="$1"
  else
    latestVersion=$(curl --silent "$latestUrl" | grep -Po '"tag_name": "\K.*?(?=")')
  fi

  if [ -z $latestVersion ] ; then
    echoerr " [E] Cannot determine latest version from github repository"
    return 1
  elif [ $QUIET -eq 0 ] ; then
    echo
    exe read -p "Install $latestVersion to $FR_LOC [n]o/(y)es? " answer
    case $answer in
      [yY])
        ;;
      *)
        echoerr " [I] Upgrade aborted"
        return 1
        ;;
    esac
  fi

  local isInstalled=$(grep -E "Version $latestVersion" "${FR_LOC}/CHANGELOG" >>/dev/null && echo "1" || echo "0")
  if [ $isInstalled -eq 1 ] ; then
    echoerr " [E] Version $latestVersion is already installed"
    return 2
  fi
  
  # Download

  local downUrl="https://github.com/friendica/friendica/releases/download/${latestVersion}/friendica-full-${latestVersion}.tar.gz"
  local downUrlAddons="https://github.com/friendica/friendica-addons/archive/${latestVersion}.tar.gz"
  local tempExtract="$tempDown/friendica-full-$latestVersion"
  local tempExtractAddons="$tempDown/friendica-addons-$latestVersion"
  
  if [ ! -e "$tempExtract" ] ; then
    exe mkdir -p "$tempDown"
    exe wget -O "$tempLoc" $downUrl
    endReturn -o $? "Download failed: $downUrl"
    exe cd "$tempDown"
    exe tar -xf "$tempLoc"
    endReturn -o $? "Extract failed: $tempLoc"
  else
    echo " [I] Found existing download: $tempExtract"
  fi

  if [ ! -e "$tempExtractAddons" ] ; then
    exe mkdir -p "$tempDown"
    exe wget -O "$tempLocAddons" $downUrlAddons
    endReturn -o $? "Download failed: $downUrlAddons"
    exe cd "$tempDown"
    exe tar -xf "$tempLocAddons"
    endReturn -o $? "Extract failed: $tempLocAddons"
  else
    echo " [I] Found existing download: $tempExtractAddons"
  fi

  # Installation
  local tempBu="${FR_LOC}_bu"
  local tempAddons="${FR_LOC}/addon"

  exe mv "$FR_LOC" "$tempBu"
  step backup "$tempBu"
  endReturn -o $? "Backup failed; $FR_LOC renamed!"
  echo " [I] Installing version $latestVersion to $FR_LOC"
  exe mv "$tempExtract" "$FR_LOC"
  exe mv "$tempExtractAddons" "$tempAddons"
  exe chown -R www-data: "$FR_LOC"

  # Configuration
  echo " [I] Copying configuration"
  exe cp -ar "$tempBu/config/local.config.php" "$FR_LOC/config/"
  exe cp -ar "$tempBu/config/addon.config.php" "$FR_LOC/config/"

  echo " [I] Don't forget to \"clean\" if everything is working as expected"
}
tempDown="/tmp/friendica"
tempLoc="$tempDown/fr.tar.gz"
tempLocAddons="$tempDown/fradd.tar.gz"

step_24_info() { echo "Clean temporary files: $tempDown"; }
step_24_alias() { ALIAS="clean"; }
step_24() {
  exe rm -rf "$tempDown"
}

VERSION_SEQREV=11
. /usr/local/bin/sequencer.sh