class FlagsEvaluation

# File lib/flags_sdk_ort.rb, line 24
def FlagsEvaluation.cached(token, user_id)
        print_if_verbose("Check if value was previously cached")

        if @@cache[token] != nil && @@cache[token][user_id] != nil
                print_if_verbose("The result was cached, checking if value has not expired (<= 120 seconds)")

                current_date = DateTime.now
                _, old_date = @@cache[token][user_id]
                
                elapsed_seconds = ((current_date - old_date) * 24 * 60 * 60).to_i 
                
                print_if_verbose("The elapsed seconds are " + elapsed_seconds.to_s)
                return elapsed_seconds <= 120
        end

        return false
end

# File lib/flags_sdk_ort.rb, line 58
def FlagsEvaluation.evaluate(token, user_id)
        if !cached(token, user_id)
                print_if_verbose("A request is going to be made because there is no valid result cached for this flag and token")
                
                complete_route = @@route + '/flags/' + token.to_s + '/user/' + user_id.to_s + "/evaluate"

                response = HTTParty.get(complete_route, timeout: 1)

                if response.code == 200
                        body = JSON.parse(response.body)

                        if body["eval"] != nil
                                self.save_to_cache(token, user_id, body["eval"])

                                return body["eval"]
                        else
                                return false
                        end
                else
                        return false
                end
        else
                print_if_verbose("The evaluation result is going to be obtained from cache")

                return retrieve_from_cache(token, user_id)
        end
end

# File lib/flags_sdk_ort.rb, line 18
def FlagsEvaluation.print_if_verbose(message)
        if @@verbose
                puts message
        end
end

# File lib/flags_sdk_ort.rb, line 50
def FlagsEvaluation.retrieve_from_cache(token, user_id)
        print_if_verbose("Retriving the value from cache")

        value, _ = @@cache[token][user_id]

        return value
end

# File lib/flags_sdk_ort.rb, line 42
def FlagsEvaluation.save_to_cache(token, user_id, result)
        print_if_verbose("Information for this request is going to be saved in the cache")

        @@cache[token] = {user_id => [result, DateTime.now]}

        print_if_verbose("The following values were added to the cache: token: " + token + ", user_id: " + user_id + ", result: " + @@cache[token][user_id].to_s)
end

# File lib/flags_sdk_ort.rb, line 9
def FlagsEvaluation.set_route(route)
        @@route = route
        @@cache = Hash.new
end

# File lib/flags_sdk_ort.rb, line 14
def FlagsEvaluation.set_verbose(verbose)
        @@verbose = verbose
end