From 28f11c5a99841e0af0347b7c435feccf0b002099 Mon Sep 17 00:00:00 2001
From: bohung <bohung@rulingcom.com>
Date: Thu, 4 Aug 2022 15:32:48 +0800
Subject: [PATCH] Update install nginx script.

---
 install_nginx.sh | 48 ++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 46 insertions(+), 2 deletions(-)

diff --git a/install_nginx.sh b/install_nginx.sh
index fd26594..c239ca4 100644
--- a/install_nginx.sh
+++ b/install_nginx.sh
@@ -1,6 +1,9 @@
 #!/bin/bash
+function escape_str(){
+    echo $1|sed -E 's/\\+//g' |sed -E 's/[\/\.\*]/\\\0/g'
+}
 ubuntu_ver="$(lsb_release -rs)"
-sudo echo "Starting "
+sudo echo ""
 org_pwd="$(pwd)"
 cpu_cores="$(nproc --all)"
 openssl_ver="$(openssl version|xargs| awk '{print $2}')"
@@ -52,7 +55,12 @@ fi
 nginx_ver="$(nginx -v 2>&1|xargs|awk '{print $3}'|cut -d '/' -f 2)"
 
 nginx_target_ver="1.23.1"
-if [[ "$nginx_ver" < $nginx_target_ver ]]; then
+if [[ "$nginx_ver" < $nginx_target_ver ]] || [[ "$1" == '--force' ]]; then
+    if [ -f "/etc/nginx/nginx.conf" ]; then
+        nginx_conf_exist="1"
+    else
+        nginx_conf_exist="0"
+    fi
     #Build nginx and install
     sudo bash -l -c "
         cd /root &&
@@ -67,5 +75,41 @@ if [[ "$nginx_ver" < $nginx_target_ver ]]; then
         ln -s /usr/share/nginx/sbin/nginx /usr/sbin/. &&
         service nginx restart
         "
+    if [[ $nginx_conf_exist == "0" ]]; then
+        nginx_conf_path="/etc/nginx/nginx.conf"
+        server_block_start=`sudo grep  -E '^\s*server\s*{' $nginx_conf_path -n|cut -d : -f 1`
+        http_block_start=`sudo grep  -E '^\s*http\s*{' $nginx_conf_path -n|cut -d : -f 1`
+        http_block_end_offset=`cat $nginx_conf_path | awk '{if (NR>='$http_block_start') print}'|grep  -E '^}' -n|cut -d : -f 1|xargs|awk '{print $1}'`
+        http_block_end=$((http_block_end_offset + http_block_start - 1))
+        if [ -z "$server_block_start" ]; then
+            if [[ ! -f /etc/nginx/sites-enabled/default ]]; then
+                sudo mkdir -p /etc/nginx/sites-enabled
+                sudo wget http://gitlab.tp.rulingcom.com/erictyl/install_r45_on_ubuntu_1804lts_doc/-/raw/master/sites-enabled-default -O /etc/nginx/sites-enabled/default
+            fi
+        else
+            server_block_contents=`cat $nginx_conf_path | awk '{if (NR>='$server_block_start' && NR <'$http_block_end') print}'`
+            blank_text=`echo "$server_block_contents"|grep -E '^\s*' -m 1|sed 's/\w.*//g'`
+            server_block_contents=`echo "$server_block_contents"|sed "s/^$blank_text//g"`
+            sudo mkdir -p /etc/nginx/sites-enabled
+            echo "$server_block_contents"|sudo tee /etc/nginx/sites-enabled/default 1>/dev/null
+            nginx_conf_contents=`cat $nginx_conf_path | awk '{if (NR<'$server_block_start' || NR >='$http_block_end') print}'`
+            echo "$nginx_conf_contents"|sudo tee $nginx_conf_path 1>/dev/null
+        fi
+        http_block_end_offset=`cat $nginx_conf_path | awk '{if (NR>='$http_block_start') print}'|grep  -E '^}' -n|cut -d : -f 1|xargs|awk '{print $1}'`
+        http_block_end=$((http_block_end_offset + http_block_start - 1))
+        include_list='/etc/nginx/conf.d/\*.conf /etc/nginx/sites-enabled/\*'
+        if [ -z "$(grep 'Virtual Host Configs' $nginx_conf_path)" ]; then
+            virtual_host_configs_text=`echo '\n    ##\n    # Virtual Host Configs\n    ##'`
+            sudo sed -i "$((http_block_end-1)),+0s/.*/\0\\n    $(echo "$virtual_host_configs_text")/g" $nginx_conf_path
+            http_block_end_offset=`cat $nginx_conf_path | awk '{if (NR>='$http_block_start') print}'|grep  -E '^}' -n|cut -d : -f 1|xargs|awk '{print $1}'`
+            http_block_end=$((http_block_end_offset + http_block_start - 1))
+        fi
+        for file_list in $include_list; do
+            if [[ "$(cat $nginx_conf_path)" != *"$(echo $file_list|sed 's/\\//g')"* ]]; then
+                sudo sed -i $((http_block_end-1)),+0's/.*/\0\n    include '$(escape_str $file_list)';/g' $nginx_conf_path
+                http_block_end=$((http_block_end + 1))
+            fi
+        done
+    fi
     cd "$org_pwd"
 fi
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