#!/bin/sh
# vim:sw=4:ts=4:et

set -e
# /etc/nginx/conf.d/servers.conf 文件不存在，就通过环境变量 UPSTREAM_WEB_SERVERS，UPSTREAM_MANAGE_SERVERS生成/data/vp/nginx/conf/servers.conf
if [ ! -f "/data/vp/nginx/conf/servers.conf" ]; then
  echo "BEGIN REPLACE SERVERS.CONF ...."
  if [ -z "${UPSTREAM_MANAGE_SERVERS}" ]; then
    echo "ENVIRONMENT VARIABLE UPSTREAM_MANAGE_SERVERS is empty, use UPSTREAM_WEB_SERVERS ...."
    export UPSTREAM_MANAGE_SERVERS="${UPSTREAM_WEB_SERVERS}"
  fi
  envsubst '$UPSTREAM_WEB_SERVERS' < /data/vp/nginx/conf/servers.conf.template> /data/vp/nginx/conf/servers.tmp
  envsubst '$UPSTREAM_MANAGE_SERVERS' < /data/vp/nginx/conf/servers.tmp > /data/vp/nginx/conf/servers.conf

  else
    echo "SERVERS.CONF ALREADY EXISTS"
fi


entrypoint_log() {
    if [ -z "${NGINX_ENTRYPOINT_QUIET_LOGS:-}" ]; then
        echo "$@"
    fi
}

if [ "$1" = "nginx" ] || [ "$1" = "nginx-debug" ]; then
    if /usr/bin/find "/docker-entrypoint.d/" -mindepth 1 -maxdepth 1 -type f -print -quit 2>/dev/null | read v; then
        entrypoint_log "$0: /docker-entrypoint.d/ is not empty, will attempt to perform configuration"

        entrypoint_log "$0: Looking for shell scripts in /docker-entrypoint.d/"
        find "/docker-entrypoint.d/" -follow -type f -print | sort -V | while read -r f; do
            case "$f" in
                *.envsh)
                    if [ -x "$f" ]; then
                        entrypoint_log "$0: Sourcing $f";
                        . "$f"
                    else
                        # warn on shell scripts without exec bit
                        entrypoint_log "$0: Ignoring $f, not executable";
                    fi
                    ;;
                *.sh)
                    if [ -x "$f" ]; then
                        entrypoint_log "$0: Launching $f";
                        "$f"
                    else
                        # warn on shell scripts without exec bit
                        entrypoint_log "$0: Ignoring $f, not executable";
                    fi
                    ;;
                *) entrypoint_log "$0: Ignoring $f";;
            esac
        done

        entrypoint_log "$0: Configuration complete; ready for start up"
    else
        entrypoint_log "$0: No files found in /docker-entrypoint.d/, skipping configuration"
    fi
fi

exec "$@"