com.kidsoncoffee.cheesecakes.Parameter Maven / Gradle / Ivy

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package com.kidsoncoffee.cheesecakes;

import org.immutables.value.Value;

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.lang.reflect.Method;
import java.util.function.Function;
import java.util.function.Predicate;

/**
 * @author fernando.chovich
 * @since 1.0
 */
public @interface Parameter {

  // TODO fchovich IS PARAMETER PART OF THE API?

  @Target({ElementType.PARAMETER})
  @Retention(RetentionPolicy.RUNTIME)
  @interface Requisite {}

  @Target({ElementType.PARAMETER})
  @Retention(RetentionPolicy.RUNTIME)
  @interface Expectation {}

  @Target({ElementType.PARAMETER})
  @Retention(RetentionPolicy.RUNTIME)
  @interface Conversion {
    Class value();
  }

  @Retention(RetentionPolicy.RUNTIME)
  @Target(ElementType.METHOD)
  @interface SchemaSupplier {}

  @Value.Immutable
  @Value.Style(builder = "converter")
  //TODO fchovich THIS CAN BE AN INTERFACE
  abstract class Converter implements Predicate {

    @Value.Parameter(order = 0)
    public abstract Class getTargetType();

    @Value.Parameter(order = 1)
    public abstract Function getConverter();

    @Value.Auxiliary
    public R convert(final Convertible input) {
      return this.getConverter().apply(input);
    }

    @Value.Auxiliary
    public boolean test(final Class outputClass) {
      return true;
    }
  }

  @Value.Immutable
  @Value.Style(builder = "registrableConverter")
  abstract class RegistrableConverter extends Converter {

    @Value.Auxiliary
    @Override
    public boolean test(final Class outputClass) {
      return getTargetType().isAssignableFrom(outputClass);
    }
  }

  @Value.Immutable
  @Value.Style(builder = "convertableParameter")
  interface Convertible {
    Method getMethod();

    Parameter.Schema getSchema();

    String getValue();
  }

  @Value.Immutable
  @Value.Style(builder = "schema")
  interface Schema {
    // TODO fchovich SHOULD THIS BE OPEN TO USER
    String getName();

    Class getType();

    Scenario.StepType getStep();

    int getOverallOrder();
  }

  interface SchemaSource {
    // MARKER INTERFACE
  }
}