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 * to you under the Apache License, Version 2.0 (the            *
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 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY       *
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 * under the License.                                           *
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package org.apache.james.droplists.api;

import static org.apache.james.droplists.api.OwnerScope.GLOBAL;
import static org.assertj.core.api.Assertions.assertThatThrownBy;
import static org.assertj.core.api.AssertionsForClassTypes.assertThat;

import java.util.stream.Stream;

import jakarta.mail.internet.AddressException;

import org.apache.james.core.Domain;
import org.apache.james.core.MailAddress;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.Arguments;
import org.junit.jupiter.params.provider.MethodSource;

import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;

public interface DropListContract {

    DropList dropList();

    @ParameterizedTest(name = "{index} {0}")
    @MethodSource("provideParametersForGetEntryListTest")
    default void shouldAddEntry(DropListEntry dropListEntry) {
        dropList().add(dropListEntry).block();

        assertThat(dropList().list(dropListEntry.getOwnerScope(), dropListEntry.getOwner()).collectList().block().size()).isEqualTo(1);
    }

    @ParameterizedTest(name = "{index} {0}")
    @MethodSource("provideParametersForGetEntryListTest")
    default void shouldRemoveEntry(DropListEntry dropListEntry) {
        dropList().add(dropListEntry).block();
        dropList().remove(dropListEntry).block();

        assertThat(dropList().list(dropListEntry.getOwnerScope(), dropListEntry.getOwner()).collectList().block().size()).isZero();
    }

    @Test
    default void shouldThrowWhenAddOnNullDropListEntry() {
        assertThatThrownBy(() -> dropList().add(null))
            .isInstanceOf(IllegalArgumentException.class);
    }

    @Test
    default void shouldThrowWhenRemoveOnNullDropListEntry() {
        assertThatThrownBy(() -> dropList().remove(null))
            .isInstanceOf(IllegalArgumentException.class);
    }

    @Test
    default void shouldThrowWhenListOnNullScope() {
        assertThatThrownBy(() -> dropList().list(null, "owner"))
            .isInstanceOf(IllegalArgumentException.class);
    }

    @Test
    default void shouldThrowWhenListOnNullOwner() {
        assertThatThrownBy(() -> dropList().list(GLOBAL, null))
            .isInstanceOf(IllegalArgumentException.class);
    }

    @Test
    default void shouldThrowWhenQueryOnNullScope() {
        assertThatThrownBy(() -> dropList().query(null, "owner", new MailAddress("sender@example.com")))
            .isInstanceOf(IllegalArgumentException.class);
    }

    @Test
    default void shouldThrowWhenQueryOnNullOwner() {
        assertThatThrownBy(() -> dropList().query(GLOBAL, null, new MailAddress("sender@example.com")))
            .isInstanceOf(IllegalArgumentException.class);
    }

    @Test
    default void shouldThrowWhenQueryOnNullSender() {
        assertThatThrownBy(() -> dropList().query(GLOBAL, "owner", null))
            .isInstanceOf(IllegalArgumentException.class);
    }

    @ParameterizedTest(name = "{index} {0}")
    @MethodSource("provideParametersForGetEntryListTest")
    default void shouldGetEntryListForSpecifiedScopeAndOwner(DropListEntry dropListEntry) {
        dropList().add(dropListEntry).block();

        Flux<DropListEntry> result = dropList().list(dropListEntry.getOwnerScope(), dropListEntry.getOwner());

        assertThat(result.collectList().block().size()).isEqualTo(1);
    }


    @ParameterizedTest(name = "{index} {0}, sender: {1}, recipient: {2}")
    @MethodSource("provideParametersForReturnAllowedTest")
    default void shouldReturnAllowed(DropListEntry dropListEntry, MailAddress senderMailAddress, String recipient) {
        dropList().add(dropListEntry).block();

        Mono<DropList.Status> result = dropList().query(dropListEntry.getOwnerScope(), recipient, senderMailAddress);

        assertThat(result.block()).isEqualTo(DropList.Status.ALLOWED);
    }

    @ParameterizedTest(name = "{index} {0}, sender: {1}, recipient: {2}")
    @MethodSource("provideParametersForReturnBlockedTest")
    default void shouldReturnBlocked(DropListEntry dropListEntry, MailAddress senderMailAddress, String recipient) {
        dropList().add(dropListEntry).block();

        Mono<DropList.Status> result = dropList().query(dropListEntry.getOwnerScope(), recipient, senderMailAddress);

        assertThat(result.block()).isEqualTo(DropList.Status.BLOCKED);
    }

    static Stream<DropListEntry> getDropListTestEntries() throws AddressException {
        return Stream.of(
            DropListEntry.builder()
                .forAll()
                .denyAddress(new MailAddress("denied@denied.com"))
                .build(),
            DropListEntry.builder()
                .forAll()
                .denyDomain(Domain.of("denied.com"))
                .build(),
            DropListEntry.builder()
                .domainOwner(Domain.of("example.com"))
                .denyAddress(new MailAddress("denied@denied.com"))
                .build(),
            DropListEntry.builder()
                .domainOwner(Domain.of("example.com"))
                .denyDomain(Domain.of("denied.com"))
                .build(),
            DropListEntry.builder()
                .userOwner(new MailAddress("owner@example.com"))
                .denyAddress(new MailAddress("denied@denied.com"))
                .build(),
            DropListEntry.builder()
                .userOwner(new MailAddress("owner@example.com"))
                .denyDomain(Domain.of("denied.com"))
                .build());
    }

    static Stream<Arguments> provideParametersForGetEntryListTest() throws AddressException {
        return getDropListTestEntries().map(Arguments::of);
    }

    static Stream<Arguments> provideParametersForReturnAllowedTest() throws AddressException {
        MailAddress recipientAddress = new MailAddress("owner@example.com");
        MailAddress allowedSenderAddress = new MailAddress("allowed@allowed.com");
        return getDropListTestEntries().map(dropListEntry -> Arguments.of(dropListEntry, allowedSenderAddress, recipientAddress.asString()));
    }

    static Stream<Arguments> provideParametersForReturnBlockedTest() throws AddressException {
        MailAddress recipientAddress = new MailAddress("owner@example.com");
        MailAddress deniedSenderAddress = new MailAddress("denied@denied.com");
        MailAddress deniedSenderDomain = new MailAddress("allowed@denied.com");
        return getDropListTestEntries().map(dropListEntry -> {

            if (dropListEntry.getOwnerScope().equals(OwnerScope.DOMAIN)) {
                return dropListEntry.getDeniedEntityType().equals(DeniedEntityType.DOMAIN) ?
                    Arguments.of(dropListEntry, deniedSenderDomain, recipientAddress.getDomain().asString()) :
                    Arguments.of(dropListEntry, deniedSenderAddress, recipientAddress.getDomain().asString());
            } else {
                return dropListEntry.getDeniedEntityType().equals(DeniedEntityType.DOMAIN) ?
                    Arguments.of(dropListEntry, deniedSenderDomain, recipientAddress.asString()) :
                    Arguments.of(dropListEntry, deniedSenderAddress, recipientAddress.asString());
            }
        });
    }
}