#!/bin/bash
set -e

cd /app

# is a mysql or postgresql database linked?
# requires that the mysql or postgresql containers have exposed
# port 3306 and 5432 respectively.
if [ -n "${MYSQL_PORT_3306_TCP_ADDR}" ]; then
  DATABASE_ADAPTER=${DATABASE_ADAPTER:-mysql2}
  DATABASE_HOST=${DATABASE_HOST:-${MYSQL_PORT_3306_TCP_ADDR}}
  DATABASE_PORT=${DATABASE_PORT:-${MYSQL_PORT_3306_TCP_PORT}}
elif [ -n "${POSTGRESQL_PORT_5432_TCP_ADDR}" ]; then
  DATABASE_ADAPTER=${DATABASE_ADAPTER:-postgres}
  DATABASE_HOST=${DATABASE_HOST:-${POSTGRESQL_PORT_5432_TCP_ADDR}}
  DATABASE_PORT=${DATABASE_PORT:-${POSTGRESQL_PORT_5432_TCP_PORT}}
fi

cat <<EOF > /app/.env
APP_SECRET_TOKEN=${APP_SECRET_TOKEN:-CHANGEME}
DOMAIN=${DOMAIN:+${HUGINN_HOST:-localhost}:${PORT:-5000}}
${ASSET_HOST:+ASSET_HOST=${ASSET_HOST}}
DATABASE_ADAPTER=${DATABASE_ADAPTER:-mysql2}
DATABASE_ENCODING=${DATABASE_ENCODING:-utf8}
DATABASE_RECONNECT=${DATABASE_RECONNECT:-true}
DATABASE_NAME=${DATABASE_NAME:-huginn}
DATABASE_POOL=${DATABASE_POOL:-5}
DATABASE_USERNAME=${DATABASE_USERNAME:-root}
DATABASE_PASSWORD="${DATABASE_PASSWORD}"
DATABASE_PORT=${DATABASE_PORT:-3306}
DATABASE_HOST=${DATABASE_HOST:-localhost}
DATABASE_PORT=${DATABASE_PORT:-3306}
${DATABASE_SOCKET:+DATABASE_SOCKET=${DATABASE_SOCKET:-/tmp/mysql.sock}}
${RAILS_ENV:+RAILS_ENV=${RAILS_ENV:-production}}
FORCE_SSL=${FORCE_SSL:-false}
INVITATION_CODE=${INVITATION_CODE:-try-huginn}
SMTP_DOMAIN=${SMTP_DOMAIM=-example.com}
SMTP_USER_NAME=${SMTP_USER_NAME:-you@gmail.com}
SMTP_PASSWORD=${SMTP_PASSWORD:-somepassword}
SMTP_SERVER=${SMTP_SERVER:-smtp.gmail.com}
SMTP_PORT=${SMTP_PORT:-587}
SMTP_AUTHENTICATION=${SMTP_AUTHENTICATION:-plain}
SMTP_ENABLE_STARTTLS_AUTO=${SMTP_ENABLE_STARTTLS_AUTO:-true}
EMAIL_FROM_ADDRESS=${EMAIL_FROM_ADDRESS:-huginn@example.com}
AGENT_LOG_LENGTH=${AGENT_LOG_LENGTH:-200}
AWS_ACCESS_KEY_ID="${AWS_ACCESS_KEY_ID:-your aws access key id}"
AWS_ACCESS_KEY="${AWS_ACCESS_KEY:-your aws access key}"
AWS_SANDBOX=${AWS_SANDBOX:-false}
FARADAY_HTTP_BACKEND=${FARADAY_HTTP_BACKEND:-typhoeus}
DEFAULT_HTTP_USER_AGENT="${DEFAULT_HTTP_USER_AGENT:-Huginn - https://github.com/cantino/huginn}"
ALLOW_JSONPATH_EVAL=${ALLOW_JSONPATH_EVAL:-false}
ENABLE_INSECURE_AGENTS=${ENABLE_INSECURE_AGENTS:-false}
${USE_GRAPHVIZ_DOT:+USE_GRAPHVIZ_DOT=${USE_GRAPHVIZ_DOT:-dot}}
TIMEZONE="${TIMEZONE:-Pacific Time (US & Canada)}"
EOF
chmod ugo+r /app/.env
source /app/.env

# use default port number if it is still not set
case "${DATABASE_ADAPTER}" in
  mysql2) DATABASE_PORT=${DATABASE_PORT:-3306} ;;
  postgres) DATABASE_PORT=${DATABASE_PORT:-5432} ;;
  *) echo "Unsupported database adapter. Available adapters are mysql2, and postgres." && exit 1 ;;
esac

# start supervisord
/usr/bin/supervisord -c /etc/supervisor/supervisord.conf

# start mysql server if ${DATABASE_HOST} is localhost
if [ "${DATABASE_HOST}" == "localhost" ]; then
  if [ "${DATABASE_ADAPTER}" == "postgres" ]; then
    echo "DATABASE_ADAPTER 'postgres' is not supported internally. Please provide DATABASE_HOST."
    exit 1
  fi

  # configure supervisord to start mysql (manual)
  cat > /etc/supervisor/conf.d/mysqld.conf <<EOF
[program:mysqld]
priority=20
directory=/tmp
command=/usr/bin/mysqld_safe
user=root
autostart=false
autorestart=true
stdout_logfile=/var/log/supervisor/%(program_name)s.log
stderr_logfile=/var/log/supervisor/%(program_name)s.log
EOF
  supervisorctl reload

  # fix permissions and ownership of /var/lib/mysql
  chown -R mysql:mysql /var/lib/mysql
  chmod 700 /var/lib/mysql

  # initialize MySQL data directory
  if [ ! -d /var/lib/mysql/mysql ]; then
    mysql_install_db --user=mysql
  fi

  echo "Starting mysql server..."
  supervisorctl start mysqld >/dev/null

  # wait for mysql server to start (max 120 seconds)
  timeout=120
  while ! mysqladmin -uroot ${DATABASE_PASSWORD:+-p$DATABASE_PASSWORD} status >/dev/null 2>&1
  do
    timeout=$(expr $timeout - 1)
    if [ $timeout -eq 0 ]; then
      echo "Failed to start mysql server"
      exit 1
    fi
    sleep 1
  done

  if ! echo "USE ${DATABASE_NAME}" | mysql -uroot ${DATABASE_PASSWORD:+-p$DATABASE_PASSWORD} >/dev/null 2>&1; then
    DB_INIT="yes"
    echo "CREATE DATABASE IF NOT EXISTS \`${DATABASE_NAME}\` DEFAULT CHARACTER SET \`utf8\` COLLATE \`utf8_unicode_ci\`;" | mysql -uroot ${DATABASE_PASSWORD:+-p$DATABASE_PASSWORD}
    echo "GRANT SELECT, LOCK TABLES, INSERT, UPDATE, DELETE, CREATE, DROP, INDEX, ALTER ON \`${DATABASE_NAME}\`.* TO 'root'@'localhost';" | mysql -uroot ${DATABASE_PASSWORD:+-p$DATABASE_PASSWORD}
  fi
fi

# Assuming we have a created database, run the migrations and seed it idempotently.
[ -z "${DO_NOT_MIGRATE}" ] && sudo -u huginn -EH bundle exec rake db:migrate
[ -z "${DO_NOT_SEED}" ] && sudo -u huginn -EH bundle exec rake db:seed

[ -n "$INTENTIONALLY_SLEEP" ] && sleep $INTENTIONALLY_SLEEP

# Fixup the Procfile and prepare the PORT
[ -z "${DO_NOT_RUN_JOBS}" ] && perl -pi -e 's/^jobs:/#jobs:/' /app/Procfile
perl -pi -e 's/rails server$/rails server -p \$PORT/' /app/Procfile
export PORT

# Start huginn
sudo -u huginn -EH bundle exec foreman start

# As the ENTRYPOINT script, when this exits the docker container will Exit.
exit 0