#include <cppcms/service.h>
#include <cppcms/application.h>
#include <cppcms/applications_pool.h>
#include <cppcms/cache_interface.h>
#include <iostream>
#include <sstream>
#include "content.h"

class hello: public cppcms::application {
public:
 hello(cppcms::service &s) :
 cppcms::application(s) 
 {
 }
 void main(std::string /*unused*/)
 {
 content::message c;
 c.arg=0;
 c.fact=1;
 if(request().request_method()=="POST") {
 c.info.load(context());
 if(c.info.validate()) {
 c.arg=c.info.arg.value(); 
 c.info.clear();
 }
 else { // No cache should be used
 render("message",c);
 return;
 }
 }

 std::ostringstream key;
 key << "factorial_" << c.arg;
 if(cache().fetch_page(key.str()))
 return;
 long long int f=1;
 for(int i=1;i<=c.arg;i++) {
 f*=i;
 }
 c.fact=f;
 render("message",c);
 cache().store_page(key.str(),3600);
 }
};

int main(int argc,char ** argv)
{
 try {
 cppcms::service app(argc,argv);
 app.applications_pool().mount(cppcms::applications_factory<hello>());
 app.run();
 }
 catch(std::exception const &e) {
 std::cerr<<e.what()<<std::endl;
 }
}
// vim: tabstop=4 expandtab shiftwidth=4 softtabstop=4