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#include "content.hpp"
#include "user.hpp"
#include "strusCms.hpp"
#include "captcha.hpp"

#include <cppcms/url_dispatcher.h>  
#include <cppcms/url_mapper.h>   
#include <cppdb/frontend.h>
#include <cppcms/session_interface.h>
#include <booster/posix_time.h>

namespace apps {

// user

user::user( strusCms &cms )
	: master( cms )
{
	cms.dispatcher( ).assign( "/login", &user::login, this );
	cms.mapper( ).assign( "login" );

	cms.dispatcher( ).assign( "/logout", &user::logout, this );
	cms.mapper( ).assign( "logout" );

	cms.dispatcher( ).assign( "/register", &user::register_user, this );
	cms.mapper( ).assign( "register" );

	cms.dispatcher( ).assign( "/confirm_register", &user::confirm_register, this );
	cms.mapper( ).assign( "confirm_register" );
}

void user::login( )
{
	content::user c( cms );
	ini( c );
	if( request( ).request_method( ) == "POST" && session( ).is_set( "prelogin" ) ) {
		c.login.load( context( ) ); 
		if( c.login.validate( ) ) {
			session( ).reset_session( );
			session( ).erase( "prelogin" );
			session( )["username"] = c.login.username.value( );
			session( ).expose( "username" );
			response( ).set_redirect_header( cms.root( ) );
		}
	}
	
	session( ).set( "prelogin", "" );  
	render( "login", c );
}

void user::logout( )
{
	content::user c( cms );
	session( ).clear( );
	ini( c );
	render( "logout", c );
}

void user::register_user( )
{
	content::user c( cms );
	ini( c );
	if( request( ).request_method( ) == "POST" ) {
		c.register_user.load( context( ) );
		if( c.register_user.validate( ) ) {
			response( ).set_redirect_header( cms.root( ) + "/confirm_register" );
		}
	}
	render( "register_user", c );
}

void user::confirm_register( )
{
	content::user c( cms );
	ini( c );
	if( request( ).request_method( ) == "POST" ) {
		c.confirm_register.load( context( ) );
		if( c.confirm_register.validate( ) ) {
			response( ).set_redirect_header( cms.root( ) + "/intro" );
		}
	}
	render( "confirm_register", c );
}
	
// TODO: make this a salted hash
bool user::check_login( std::string user, std::string password )
{
	if( user.empty( ) || password.empty( ) ) {
		return false;
	}
	
	cppdb::session sql( cms.conn );
	cppdb::result r;
	r = sql << "SELECT id, password FROM user WHERE username=?" << user << cppdb::row;
	if( r.empty( ) ) {
		return false;
	}
	
	int id;
	r >> id;
	std::string pass;
	r >> pass;
	
	if( password != pass ) {
		return false;
	}
	
	std::time_t now_time = std::time( 0 );
	std::tm now = *std::localtime( &now_time );
	
	cppdb::statement stmt;
	stmt = sql << "INSERT INTO login(user_id, last_login) VALUES(?, ?)"
		<< id << now;
	stmt.exec( );
	
	return true;
}

void user::ini( content::user &c )
{
	master::ini( c );
	struct captcha ca = generateCaptcha( );
	
	last_captcha = new_captcha;
	new_captcha = ca.text;

	c.captcha_base64 = ca.base64;
}

} // namespace apps

namespace content {

user::user( apps::strusCms &cms )
	: login( cms ), register_user( cms ), confirm_register( cms )
{
}
	
// login

login_form::login_form( apps::strusCms &cms  )
	: cppcms::form( ),
	cms( cms )
{
	username.message( "Your login" );
	username.error_message( "The login is illegal" );
	password.message( "Your password" );
	password.error_message( "Your password is illegal" );
	submit.value( "Log in" );
	
	add( username );
	add( password );
	add( submit );
	
	username.non_empty( );
	password.non_empty( );
}
	
bool login_form::validate( )
{
	if( !form::validate( ) ) {
		booster::ptime::sleep( booster::ptime( 5, 0 ) );
		return false;
	}

	if( !cms.user.check_login( username.value( ), password.value( ) ) ) {
		username.valid( false );
		password.valid( false );
		password.clear( );
		booster::ptime::sleep( booster::ptime( 5, 0 ) );
		return false;
	}
		
	return true;
}
	
// register user

register_user_form::register_user_form( apps::strusCms &cms  )
	: cppcms::form( ),
	cms( cms )
{
	username.message( "Your login" );
	username.error_message( "The login is illegal" );
	password.message( "Your password" );
	password.error_message( "Your password is illegal" );
	password2.message( "Your password (again)" );
	password2.error_message( "Your password doesn't match" );
	captcha.message( "Enter the correct captcha" );
	captcha.error_message( "Captcha didn't match" );
	submit.value( "Register user" );
	
	add( username );
	add( password );
	add( password2 );
	add( captcha );
	add( submit );
	
	username.non_empty( );
	password.non_empty( );
	password2.non_empty( );
	captcha.non_empty( );
}

bool register_user_form::validate( )
{
	if( !form::validate( ) ) {
		return false;
	}
	
	if( captcha.value( ).compare( cms.user.last_captcha ) != 0 ) {
		captcha.valid( false );
		captcha.clear( );
		return false;
	}
	
	return true;
}

// confirm user registration form

confirm_register_form::confirm_register_form( apps::strusCms &cms  )
	: cppcms::form( ),
	cms( cms )
{
	code.message( "Enter the code you received by email" );
	code.error_message( "The code you provided is not correct" );
	submit.value( "Log in" );
	
	add( code );
	add( submit );
	
	code.non_empty( );
}
	
bool confirm_register_form::validate( )
{
	if( !form::validate( ) ) {
		return false;
	}

	//~ if( !cms.user.check_code( code.value( ) ) ) {
		//~ code.valid( false );
		//~ booster::ptime::sleep( booster::ptime( 5, 0 ) );
		//~ return false;
	//~ }
		
	return true;
}

} // namespace content