basic.cpp

#include <eosio/eosio.hpp>
#include <eosio/asset.hpp>

#include <eosio.token/eosio.token.hpp>

#include "../flash.sx.hpp"

using namespace eosio;
using namespace std;

class [[eosio::contract("basic")]] example : public contract {

public:
	using contract::contract;

	[[eosio::action]]
	void init( const asset quantity )
	{
		sx::flash::borrow_action borrow( "flash.sx"_n, { get_self(), "active"_n });
		borrow.send( get_self(), extended_asset{quantity, "eosio.token"_n}, "basic example", name{} );
	}

	[[eosio::on_notify("eosio.token::transfer")]]
	void on_transfer( const name from, const name to, asset quantity, const string memo )
	{
		// only handle incoming transfers from contract
		if ( from != "flash.sx"_n ) return;

		// do actions before sending funds back
		// PLACE YOUR CODE HERE

		// repay flashloan
		const asset fee = sx::flash::calculate_fee( "flash.sx"_n, quantity );
		token::transfer_action transfer( "eosio.token"_n, { get_self(), "active"_n });
		transfer.send( get_self(), from, quantity + fee, memo );
	}
};