//
// CHALLENGE (work in pairs):
// Move from f(o) -> o.f()
//


// 1
// Turn on object-thinking and re-design the code accordingly
class CsvParser<T extends Line> {
    Collection<T> parse(File location) {
    }
}


// 2
// Turn on object-thinking and re-design the code accordingly
interface Pinger {
    void sendPing();
}


// 3
// rename the method to improve readability
interface Input {
  boolean validate();
}

// 4
// turn procedural code into object-oriented
class MortgageRiskService {

  BigDecimal calculateRisk(MortageApplication mortgageApplication) {
    ...
  }

  boolean isTolerable(BigDecimal risk) {
    ...
  }
  boolean areRisksEquivalent(BigDecimal oneRisk, BigDecimal otherRisk) {
    ...
  }
}

// 4.5
// turn procedural code into object-oriented
class BankruptcyProbabilityCalculator {
    BigDecimal calculate(Business business) { ... }
}
class BankruptcyProbabilityUtils {
  boolean isHigh(DecimalNumber decimal) { ... }
}

// 5
interface BlacklistingService {
    boolean shouldBlockWebsiteVisitor(BlacklistRequest request);
}

interface BlacklistRequest {
     String getEmail();
     String getIpAddress();
}




// 6
interface AnonymousUserAuthenticator {
    Token authenticate(String username, String password) throws WrongCredentialsException;
}

// 7
interface Suite {
    interface SuiteTest {
        void print();
        boolean successful()
    }
    void runAndWait();
    Collection<SuiteTest> listSuiteTests();
}

suite.runAndWait()
for (SuiteTest suiteTest : suite.listSuiteTests()) {
    if (!suiteTest.successful() ) {
        // pretty printing
        suiteTest.print();
    }
}

// 8.1
// What's the expected return type of the method (if you look at the code from the outside?)
// If you didn't expect boolean (as most develoeprs), rename it so it's clear that the boolean is returned
enum Severity {
  boolean major();
}

// 8.2
// What's the expected return type of the method (if you look at the code from the outside?)
// If you didn't expect boolean (as most develoeprs), rename it so it's clear that the boolean is returned
class Specification {
  boolean satisfiedBy(Entity entity);
}


// 9 SLAP!
boolean destroyButtonAvailable =
    widgets
        .stream()
        .filter(Widget::isButton)
        .filter(button -> button.label().equals("Destroy The World"))
        .isPresent();



// 10 transform a full name into a twitter handle. Jack Ma must become @jack.ma
String fullName = "Jack Ma";
...
String twitterHandle =