#!/usr/bin/env bash

readonly toolName=synapse-admin
readonly versionUrl="https://api.github.com/repos/Awesome-Technologies/synapse-admin/releases/latest"

downUrl=
versionNew=
versionNow=

sq_aptOpt=
sq_config=0

seq_config() {
  ## or to use sequencer api with global config file:
  if initSeqConfig "${seq_configName:?}" "${seq_configTemplate:?}" ; then
    sq_config=1
  else
    # End if no configuration file exists
    dry || return 1
  fi

  ## Apt cmdline option to suppress user interaction
  interactive || sq_aptOpt="-y"

  ## Disable error checks if external scripts are used
  ## e.g. error on unbound variables
  #disableErrorCheck

  ## Return of non zero value will abort the sequence
  return 0
}

getVersions() {
  versionNew=${versionNew:-$(curl --silent "$versionUrl" | grep -Po '"tag_name": "\K.*?(?=")')}
  downUrl=${downUrl:-$(curl --silent "$versionUrl" | grep -Po '"browser_download_url": "\K.*?(?=")')}
  versionNow=${versionNow:-$(grep -Po 'REACT_APP_VERSION:"\K.*?(?=")' 2>/dev/null < "${sc_synadmLoc}/static/js/"main.*.js | head -1)}
}

step_1_info() { echo "Status"; }
step_1_alias() { echo "status"; }
step_1() {
  getVersions
  if [[ -z "${versionNow}" ]] ; then 
    info "Version ${versionNew} available to install"
  elif [[ ${versionNew} == ${versionNow} ]] ; then
    color green
    info "Latest version ${versionNew} already installed"
  else
    color yellow
    info "Update to: ${versionNew} available"
  fi
}

step_10_info() { echo "Install"; }
step_10_alias() { echo "install"; }
step_10() {
  local loBackup="${sc_synadmLoc}.bu"
  local loTemp="/tmp/${toolName}.tar.gz"

  # get download URL 
  getVersions

  if [[ -e "${sc_synadmLoc}" ]]; then
    exe mv "${sc_synadmLoc}" "${loBackup}"
  fi

  if ! exe wget -O "${loTemp}" "${downUrl}" ; then
    info "Download failed"
    exe mv "${loBackup}" "${sc_synadmLoc}" 2>/dev/null
  else
    exe tar -xf "${loTemp}" -C "$(dirname -- "${sc_synadmLoc}")"
    endReturn -o $? "Extraction failed"
    exe mv "$(dirname -- "${sc_synadmLoc}")/${toolName}-${versionNew}" "${sc_synadmLoc}"
    exe chown -R root: "${sc_synadmLoc}"
    info "Downloaded to ${sc_synadmLoc}"
    exe rm -rf "${loBackup}" "${loTemp}"
  fi
}

step_20_info() { echo "Notes"; }
step_20_alias() { echo "notes"; }
step_20() {
  color green
  cat <<NOTES_EOF
# Nginx example

server {
  listen 8084 ssl http2;
  listen [::]:8084 ssl http2;
  server_name _;

  access_log /var/log/nginx/synapse_admin_access.log;
  error_log /var/log/nginx/synapse_admin_error.log; 

  include /etc/nginx/ssl.conf;
  error_page 497 https://\$host:\$server_port\$request_uri;

  root ${sc_synadmLoc};
  index index.html;

  location / {
    try_files \$uri \$uri/ =404;
  }

  location ~* ^(\/_matrix|\/_synapse\/admin) {
    allow 192.168.0.0/24;
    deny all;
    proxy_pass http://localhost:8008;
    proxy_set_header X-Forwarded-For \$remote_addr;
    proxy_set_header X-Forwarded-Proto \$scheme;
    proxy_set_header Host \$host;
  }
}
NOTES_EOF
}

# shellcheck disable=SC2034 # Appears unused
readonly sqr_minVersion=16
# shellcheck disable=SC1091 # Don't follow this source
. /usr/local/bin/sequencer.sh