#upgrade
function upgrade()
{ # 获取Nginx安装参数，导出到fancyIndex模块下，生成nginx_configure和nginx_configure.bak文件。
#nginx_configure文件存放的原始参数，含Nginx版本号等信息，安装完会删除。
#nginx_configure.bak文件存放的是以 “--prefix=xxx”形式的正式参数，卸载时会用到。
nginx_configure='';
#判断Nginx文件是否存在&&导出配置信息&&grep获取编译命令行并导出bak文件&&删除升级产生的Nginx_configure文件

#install
function amh_module_install()
{
if amh_module_status ; then
exit;
else
#调用升级代码
upgrade;
#获取CPU线程数
Cpunum=`cat /proc/cpuinfo |grep 'processor'|wc -l`;
#获取Nginx安装盘命令
nginx_configure=`/usr/local/nginx/sbin/nginx -V 2> /root/amh/modules/ngx-fancyindex/nginx_configure && cat /root/amh/modules/ngx-fancyindex/nginx_configure | grep 'configure arguments' | cut -d: -f2 && rm -f /root/amh/modules/ngx-fancyindex/nginx_configure`;
new_nginx_configure=$nginx_configure;
if ! echo "$new_nginx_configure" | grep 'add-module=/usr/local/ngx-fancyindex' > /dev/null; then
#添加模块信息
new_nginx_configure="${new_nginx_configure} --add-module=/usr/local/ngx-fancyindex"
fi;
#如果编译命令不同(模块信息添加成功)，开始编译
if [ "$nginx_configure" != "$new_nginx_configure" ]; then
cd /usr/local/;
wget http://mirror.ixiqin.com/zip/ngx-fancyindex-master.zip;
unzip ngx-fancyindex-master.zip;
mv ngx-fancyindex-master ngx-fancyindex;
wget http://code.amysql.com/files/nginx-1.2.9.tar.gz;
tar -zxf nginx-1.2.9.tar.gz;

cd nginx-1.2.9;
./configure $new_nginx_configure;
make -j $Cpunum;
mv /usr/local/nginx/sbin/nginx /usr/local/nginx/sbin/nginx-old;
#平滑升级
\cp -a ./objs/nginx /usr/local/nginx/sbin/;
kill -USR2 `cat /usr/local/nginx/logs/nginx.pid`;

cd /usr/local/;
rm -rf nginx-1.2.9.tar.gz nginx-1.2.9 /usr/local/nginx/sbin/nginx-old ngx-fancyindex-master.zip ;
fi;

touch /root/amh/modules/ngx-fancyindex/InstallComplete;
sleep 3;
kill -QUIT `cat /usr/local/nginx/logs/nginx.pid.oldbin`;

amh nginx reload;
amh_module_status;
fi;

#uninstall
function amh_module_uninstall()
{
if amh_module_status ; then

#获取CPU线程数
Cpunum=`cat /proc/cpuinfo |grep 'processor'|wc -l`;
nginx_configure=`/usr/local/nginx/sbin/nginx -V 2> /root/amh/modules/ngx-fancyindex/nginx_configure && cat /root/amh/modules/ngx-fancyindex/nginx_configure | grep 'configure arguments' | cut -d: -f2 && rm -f /root/amh/modules/ngx-fancyindex/nginx_configure`;
new_nginx_configure=$nginx_configure;
#处理安装命令行
if echo "$new_nginx_configure" | grep 'add-module=/usr/local/ngx-fancyindex' > /dev/null; then
new_nginx_configure=`echo $new_nginx_configure | sed "s|--add-module=/usr/local/ngx-fancyindex||"`;
fi;

if [ "$nginx_configure" != "$new_nginx_configure" ]; then
cd /usr/local/;
wget http://code.amysql.com/files/nginx-1.2.9.tar.gz;
tar -zxf nginx-1.2.9.tar.gz;
cd nginx-1.2.9;
./configure $new_nginx_configure;
make -j $Cpunum;
mv /usr/local/nginx/sbin/nginx /usr/local/nginx/sbin/nginx-old;
\cp -a ./objs/nginx /usr/local/nginx/sbin/;
kill -USR2 `cat /usr/local/nginx/logs/nginx.pid`;
cd /usr/local/;
rm -rf nginx-1.2.9 nginx-1.2.9.tar.gz* /usr/local/nginx/sbin/nginx-old;
kill -QUIT `cat /usr/local/nginx/logs/nginx.pid.oldbin`;
fi;
#删除安装文件夹
cd /usr/local/;
rm -rf ngx-fancyindex;
rm -f /root/amh/modules/ngx-fancyindex/InstallComplete;
amh nginx reload;
echo '[OK] ngx-fancyindex Uninstall successful.';
else
exit;
fi;
}

#status
function amh_module_status()
{
if grep -q '\[calendar\.so\]' /etc/php.ini; then
echo '[OK] Calendar is already installed.';
return 0;
else
echo '[Notice] Calendar is not installed.';
return 1;
fi;
}