package impl;

import java.util.Collections;

import java.util.List;

import java.util.Map;

public class Impl {

    public static void main(String[] args) {

        System.err.println("showUsageOfAbstractClassAPI:");

        showUsageOfAbstractClassAPI();

        System.err.println("showUsageOfRequestResponseAPI:");

        showUsageOfRequestResponseAPI();

    }

    private static void assertEquals(String msg, int expected, int real) {

        System.err.println("    " + msg + " expected: " + expected + " was: " + real);

        assert expected == real;

    }

    private static void showUsageOfAbstractClassAPI() {

        class ProviderWrittenAgainstVersion1 extends api.classes.Compute {

            @Override

            public List<String> getData() {

                return Collections.singletonList("Hello");

            }

        }

        int index1 = api.classes.Support.searchByDescription("Hello", new ProviderWrittenAgainstVersion1());

        assertEquals("Hello was found", 0, index1);

        int index2 = api.classes.Support.searchByDescription("Unknown", new ProviderWrittenAgainstVersion1());

        assertEquals("Unknown was not found", -1, index2);

        class ProviderWrittenAgainstVersion2 extends api.classes.Compute {

            @Override

            public List<String> getData() {

                return Collections.singletonList("Hello");

            }

            @Override

            public Map<String, String> getDataAndDescription() {

                return Collections.singletonMap("Hello", "Says hello");

            }

        }

        int index3 = api.classes.Support.searchByDescription("Says hello", new ProviderWrittenAgainstVersion2());

        assertEquals("Found by description", 0, index3);

    }

    private static void showUsageOfRequestResponseAPI() {

        class ProviderWrittenAgainstVersion1 implements api.request.response.Compute {

            public void computeData(Request request, Response response) {

                response.add("Hello");

            }

        }

        int index1 = api.request.response.Support.searchByDescription("Hello", new ProviderWrittenAgainstVersion1());

        assertEquals("Hello found", 0, index1);

        int index2 = api.request.response.Support.searchByDescription("Unknown", new ProviderWrittenAgainstVersion1());

        assertEquals("Unknown not found", -1, index2);

        class ProviderWrittenAgainstVersion2 implements api.request.response.Compute {

            public void computeData(Request request, Response response) {

                response.add("Hello", "Says hello");

            }

        }

        int index3 = api.request.response.Support.searchByDescription("Says hello", new ProviderWrittenAgainstVersion2());

        assertEquals("Description found", 0, index3);

        assert index3 == 0;

    }

}