#!/bin/bash

# installation prefix. unfortunately we have to vendor
# certains dependencies (luajit) so this /opt path is 
# (probably) going to unfortunately stick.
PREFIX="/opt/nginx"

TOP="$(pwd)"

# clean Nginx sources
pushd sources/nginx/
echo "cleaning nginx sources"
git clean -dxf
popd

BASE_CONFIGURE_FLAGS=(
  # Build everything with Clang + ThinLTO
  --with-cc="clang"
  --with-cc-opt="-pipe -march=native -mtune=native -flto=thin"
  --with-ld-opt="-march=native -mtune=native -flto=thin"

  # Use CloudFlare zlib
  --with-zlib="$TOP/sources/cf-zlib"
  --with-zlib-opt="-O3 -march=native -mtune=native -pipe -flto=thin"

  --with-compat
  --with-debug
  --with-file-aio
  --with-http_addition_module
  --with-http_auth_request_module
  --with-http_dav_module
  --with-http_degradation_module
  --with-http_flv_module
  --with-http_geoip_module
  --with-http_gunzip_module
  --with-http_gzip_static_module
  --with-http_mp4_module
  --with-http_random_index_module
  --with-http_realip_module
  --with-http_secure_link_module
  --with-http_slice_module
  --with-http_ssl_module
  --with-http_stub_status_module
  --with-http_sub_module
  --with-http_v2_module
# we don't need this functionality, so
# we strip it from our builds
#
#  --with-mail
#  --with-mail_ssl_module

  --with-pcre-jit
  --with-stream
  --with-stream_geoip_module
  --with-stream_realip_module
  --with-stream_ssl_module
  --with-stream_ssl_preread_module
  --with-threads

  # Add modules into the build we use
  --add-module=$TOP/sources/modules/nginx-module-vts
  --add-module=$TOP/sources/modules/ngx-fancyindex
  --add-module=$TOP/sources/modules/lua-nginx-module
#  --add-module=$TOP/sources/modules/nginx-rtmp-module
#  --add-module=$TOP/modules/nginx-dav-ext-module
)

# Do a dummy config of cloudflare zlib so nginx build can actually distclean and do what it wants..
pushd $TOP/sources/cf-zlib
CFLAGS="-O3 -march=native -mtune=native -pipe -flto=thin -pipe" CC="clang" \
        ./configure 
popd

# build and install luajit and the resty lua libraries into prefix
pushd $TOP/sources/luajit2
	git clean -dxf
	make PREFIX=$PREFIX -j49
	sudo make PREFIX=$PREFIX install
popd

pushd $TOP/sources/lua-resty-core
	sudo make install PREFIX=$PREFIX
popd

pushd $TOP/sources/lua-resty-lrucache
	sudo make install PREFIX=$PREFIX
popd

pushd $TOP/sources/nginx

# needed for lua-nginx-module
export LUAJIT_INC="$PREFIX/include/luajit-2.1"
export LUAJIT_LIB="$PREFIX/lib"

# TODO: see ./install for --sbin-path
./auto/configure \
    --prefix=$PREFIX/etc/nginx \
    --conf-path=$PREFIX/etc/nginx/nginx.conf \
    --sbin-path=$PREFIX/usr/bin/nginx \
    --pid-path=/run/nginx.pid \
    --lock-path=/run/lock/nginx.lock \
    --user=http \
    --group=http \
    --http-log-path=/var/log/nginx/access.log \
    --error-log-path=stderr \
    --http-client-body-temp-path=/var/lib/nginx/client-body \
    --http-proxy-temp-path=/var/lib/nginx/proxy \
    --http-fastcgi-temp-path=/var/lib/nginx/fastcgi \
    --http-scgi-temp-path=/var/lib/nginx/scgi \
    --http-uwsgi-temp-path=/var/lib/nginx/uwsgi \
        "${BASE_CONFIGURE_FLAGS[@]}" 

make -j $(($(nproc)+1))
popd