package jnpf.dmsService;

import com.fasterxml.jackson.databind.ObjectMapper;
import jnpf.permission.UserApi;
import jnpf.permission.entity.UserEntity;
import jnpf.exception.DataException;
import org.junit.jupiter.api.Test;
import java.util.*;
import static org.junit.jupiter.api.Assertions.*;
import static org.mockito.Mockito.*;
import static org.mockito.ArgumentMatchers.*;

class DmsApprovedVersionPropertiesServiceTest {
    UserApi users = mock(UserApi.class);
    DmsApprovedVersionPropertiesService service = new DmsApprovedVersionPropertiesService(users, new ObjectMapper());

    @Test void snapshotsOnlyPersistedReviewersAndDeduplicatesWithoutLosingOrder() {
        when(users.getUserName(anyList())).thenReturn(List.of(user("author", "制定人"), user("a", "审核甲"), user("b", "审核乙")));
        var value = service.create("author", "[\"a\",\"b\",\"a\"]");
        assertEquals("制定人", value.path("prepared_by_name").asText());
        assertEquals(2, value.path("reviewers").size());
        assertEquals("a", value.path("reviewers").get(0).path("user_id").asText());
        assertEquals("审核乙", value.path("reviewers").get(1).path("name").asText());
        verify(users).getUserName(List.of("a", "b", "author"));
    }

    @Test void scalarWorkflowOperatorBecomesOneReviewerWithoutNumericConversion() {
        String id = "878193794397329605";
        when(users.getUserName(anyList())).thenReturn(List.of(user(id, "审核人")));
        var value = service.create("author", id);
        assertEquals(1, value.path("reviewers").size());
        assertEquals(id, value.path("reviewers").get(0).path("user_id").asText());
        assertEquals("审核人", value.path("reviewers").get(0).path("name").asText());
        verify(users).getUserName(List.of(id, "author"));
    }

    @Test void scalarAndArrayInputsProduceTheSamePublicSnapshot() {
        when(users.getUserName(anyList())).thenReturn(List.of(user("user-a", "审核人")));
        assertEquals(service.create("author", "user-a"), service.create("author", "[\"user-a\"]"));
    }

    @Test void emptyFieldDoesNotInventAReviewer() {
        when(users.getUserName(anyList())).thenReturn(List.of(user("author", "制定人")));
        for (String empty : Arrays.asList(null, "", "  ", "[]")) {
            assertTrue(service.create("author", empty).path("reviewers").isEmpty());
        }
    }

    @Test void missingDirectoryUserRetainsIdentityWithoutInventingName() {
        when(users.getUserName(anyList())).thenReturn(List.of());
        var reviewer = service.create("author", "[\"deleted\"]").path("reviewers").get(0);
        assertEquals("deleted", reviewer.path("user_id").asText());
        assertEquals("", reviewer.path("name").asText());
    }

    @Test void malformedMappingsFailInsteadOfSilentlyDroppingReviewers() {
        for (String invalid : List.of("a,b", "{}", "null", "[null]", "[1]", "[\"\"]", "[{\"id\":\"a\"}]")) {
            assertThrows(DataException.class, () -> service.create("author", invalid), invalid);
        }
        verifyNoInteractions(users);
    }

    @Test void nullDirectoryResponsePreservesReviewerIdentity() {
        when(users.getUserName(anyList())).thenReturn(null);
        var value = assertDoesNotThrow(() -> service.create("author", "a"));
        assertEquals("", value.path("prepared_by_name").asText());
        assertEquals("a", value.path("reviewers").get(0).path("user_id").asText());
        assertEquals("", value.path("reviewers").get(0).path("name").asText());
    }

    @Test void directoryExceptionDoesNotBlockSnapshotCreationOrLoseReviewerIds() {
        when(users.getUserName(anyList())).thenThrow(new IllegalStateException("directory unavailable"));
        var value = assertDoesNotThrow(() -> service.create("author", "[\"a\",\"b\"]"));
        assertEquals("", value.path("prepared_by_name").asText());
        assertEquals(2, value.path("reviewers").size());
        assertEquals("a", value.path("reviewers").get(0).path("user_id").asText());
        assertEquals("b", value.path("reviewers").get(1).path("user_id").asText());
        assertEquals("", value.path("reviewers").get(0).path("name").asText());
        assertEquals("", value.path("reviewers").get(1).path("name").asText());
    }

    @Test void partialDirectoryResponseKeepsNamesFoundAndIdsWithoutNames() {
        when(users.getUserName(anyList())).thenReturn(List.of(user("author", "制定人"), user("a", "审核甲")));
        var value = service.create("author", "[\"a\",\"b\"]");
        assertEquals("制定人", value.path("prepared_by_name").asText());
        assertEquals("审核甲", value.path("reviewers").get(0).path("name").asText());
        assertEquals("b", value.path("reviewers").get(1).path("user_id").asText());
        assertEquals("", value.path("reviewers").get(1).path("name").asText());
    }

    UserEntity user(String id, String name) { var u = new UserEntity(); u.setId(id); u.setRealName(name); return u; }
}