package de.superx.bianalysis;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertThrows;
import static org.junit.Assert.assertTrue;

import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Optional;

import org.junit.After;
import org.junit.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.datasource.init.ScriptException;

import com.fasterxml.jackson.databind.ObjectMapper;

import de.superx.BIATestUtils;
import de.superx.BaseDbTest;
import de.superx.bianalysis.models.Dimension;
import de.superx.bianalysis.models.FactTable;
import de.superx.bianalysis.models.Right;
import de.superx.bianalysis.models.RightParam;
import de.superx.bianalysis.repository.dto.MeasureDto;
import de.superx.bianalysis.rest.BiAnalysisApi;
import de.superx.bianalysis.service.DbMetaAdapter;
import de.superx.common.AccessDeniedException;
import de.superx.common.NotYetImplementedException;

public class BiAnalysisApiTest extends BaseDbTest {

    @Autowired
    BiAnalysisApi biAnalysis;

    @Autowired
    DbMetaAdapter dbAdapter;
    
    public void init() throws ScriptException {
        user.setRights(new HashMap<>(), null);
    }

    @After
    public void after() {
        user.getRightsMap().clear();
    }

    @Test
    public void noAccess() {
        user.setRights(new HashMap<>(), null);
        String json = """
                {
                    "factTableId": "res_pub:1",
                    "filters": [
                        {
                            "dimensionAttributeId": "conf_res:20",
                            "filterValues": [
                                "ja",
                                "nein"
                            ]
                        },
                        {
                            "dimensionAttributeId": "conf_res:21",
                            "filterValues": [
                                "Fachzeitschrift für Produktions- und Verfahrenstechnik",
                                "Financial Review",
                                "Finanzwissenschaft",
                                "Genetic Review",
                                "International Journal of Financial Studies"
                            ]
                        },
                        {
                            "dimensionAttributeId": "res_pub:38",
                            "filterValues": [
                                "2021",
                                "2022",
                                "2023"
                            ]
                        }
                    ],
                    "leftDimensionAttributeIds": [
                        "res_pub:38"
                    ],
                    "measureIds": [
                        "res_pub:21037",
                        "res_pub:21031"
                    ],
                    "topDimensionAttributeIds": [
                        "conf_res:20",
                        "conf_res:26"
                    ]
                }
                """;
        assertThrows(AccessDeniedException.class, () -> {
            ReportDefinition definition = new ObjectMapper().readValue(json, ReportDefinition.class);
            biAnalysis.getReport(definition);
        });
    }

    @Test
    public void noPersistAccess() {
        String file = "storedReport";
        assertThrows(AccessDeniedException.class, () -> {
            StoredReport expectedStoredReport = BIATestUtils.readStoredReportFromJson(file);
            biAnalysis.persistReportDefinition(expectedStoredReport);
        });
    }

    @Test
    public void showOnlyThemesForSachgebiet() throws NotYetImplementedException {
        setRightParamValue(Right.CREATE_ANALYSIS, RightParam.TOPIC_AREA, "441,450");
        List<FactTable> facts = biAnalysis.listFactTables();
        assertTrue(!facts.isEmpty());
        for (FactTable fact : facts) {
            assertTrue(fact.getSachgebiettid() == 441 || fact.getSachgebiettid() == 450);
        }
    }

    @Test
    public void failOnUnallowedSachgebietDimension() {
        setRight(Right.CREATE_ANALYSIS);
        setRightParamValue(Right.CREATE_ANALYSIS, RightParam.TOPIC_AREA, "130");
        List<Dimension> dimensions =  biAnalysis.listDimensions("res_nom:1");
        assertEquals(0, dimensions.size());
        setRightParamValue(Right.CREATE_ANALYSIS, RightParam.TOPIC_AREA, "130,240");
        dimensions = biAnalysis.listDimensions("res_nom:1");
        assertTrue(dimensions.size() > 0);
    }

    @Test
    public void failOnUnallowedSachgebietMeasure() {
        setRight(Right.CREATE_ANALYSIS);
        setRightParamValue(Right.CREATE_ANALYSIS, RightParam.TOPIC_AREA, "240");
        List<MeasureDto> measures =  biAnalysis.listMeasures("app_basic:1");
        assertEquals(0, measures.size());
        setRightParamValue(Right.CREATE_ANALYSIS, RightParam.TOPIC_AREA, "130,240");
        measures = biAnalysis.listMeasures("app_basic:1");
        assertTrue(measures.size() > 0);
    }

    @Test
    public void testValidFactTables() throws NotYetImplementedException {
        setRightParamValue(Right.CREATE_ANALYSIS, RightParam.TOPIC_AREA, "130,240");
        List<FactTable> factTables =  dbAdapter.getFactTables();
        for (FactTable factTable : factTables) {
            int tid = factTable.getSachgebiettid();
            boolean isValidSachgebiet = (tid == 130 || tid == 240);
            assertTrue("Invalid Sachgebiet " + tid + " for Fact Table "
                    + "'" + factTable.getCaption() + "'", isValidSachgebiet);
        }
    }

    @Test
    public void showOnlySearchResultsForValidFactTables() {
        truncateSavedReports();
        saveDummyReportForFactTable("res_nom:1", "my report");
        saveDummyReportForFactTable("res_nom:1", "huhu");
        saveDummyReportForFactTable("res_pub:1", "was");
        saveDummyReportForFactTable("app_basic:1", "ist report");
        saveDummyReportForFactTable("app_basic:1", "test for das is here");

        setRightParamValue(Right.CREATE_ANALYSIS, RightParam.TOPIC_AREA, "240,130");

        List<StoredReport> reports;
        reports = biAnalysis.findReportDefinition(
                Optional.of("das"),
                Optional.ofNullable(null),
                Optional.ofNullable(null));
        assertEquals(1, reports.size());

        reports = biAnalysis.findReportDefinition(
                Optional.of("das"),
                Optional.of(Integer.valueOf(130)),
                Optional.of(Arrays.asList("app_basic:1")));
        assertEquals(1, reports.size());

        setRightParamValue(Right.CREATE_ANALYSIS, RightParam.TOPIC_AREA, "240");
        setRightParamValue(Right.CREATE_ANALYSIS, RightParam.TOPIC, "res_nom:1");

        reports = biAnalysis.findReportDefinition(
                Optional.of("das"), 
                Optional.of(Integer.valueOf(130)),
                Optional.of(Arrays.asList("app_basic:1")));
        assertEquals(0, reports.size());

        reports = biAnalysis.findReportDefinition(
                Optional.of("report"), 
                Optional.ofNullable(null),
                Optional.ofNullable(null));
        assertEquals(1, reports.size());

        setRightParamValue(Right.CREATE_ANALYSIS, RightParam.TOPIC, "res_nom:1,app_basic:1");

        reports = biAnalysis.findReportDefinition(
                Optional.of("report"), 
                Optional.ofNullable(null),
                Optional.ofNullable(null));
        assertEquals(2, reports.size());
    }

    @Test
    public void showOnlySearchResultsForValidSachgebiete() {
        truncateSavedReports();
        saveDummyReportForFactTable("res_nom:1", "my report");
        saveDummyReportForFactTable("res_nom:1", "huhu");
        saveDummyReportForFactTable("res_pub:1", "was");
        saveDummyReportForFactTable("app_basic:1", "ist report");
        saveDummyReportForFactTable("app_basic:1", "test for das is here");

        assertThrows(AccessDeniedException.class, () -> {
            biAnalysis.findReportDefinition(
                    Optional.ofNullable(null), 
                    Optional.ofNullable(null),
                    Optional.of(Arrays.asList("res_pub:1")));
        });

        assertThrows(AccessDeniedException.class, () -> {
            biAnalysis.findReportDefinition(
                    Optional.ofNullable(null), 
                    Optional.of(Integer.valueOf(240)),
                    Optional.ofNullable(null));
        });

        setRightParamValue(Right.CREATE_ANALYSIS, RightParam.TOPIC_AREA, "240");

        List<StoredReport> reports;
        reports = biAnalysis.findReportDefinition(
                Optional.ofNullable(null), 
                Optional.ofNullable(null),
                Optional.of(Arrays.asList("res_pub:1")));
        assertEquals(1, reports.size());

        reports = biAnalysis.findReportDefinition(
                Optional.ofNullable(null), 
                Optional.ofNullable(null),
                Optional.of(Arrays.asList("res_pub:1", "app_basic:1")));
        assertEquals(1, reports.size());

        reports = biAnalysis.findReportDefinition(
                Optional.ofNullable(null), 
                Optional.of(Integer.valueOf(240)),
                Optional.ofNullable(null));
        assertEquals(3, reports.size());

        reports = biAnalysis.findReportDefinition(
                Optional.of("das"), 
                Optional.ofNullable(null), 
                Optional.ofNullable(null));
        assertEquals(0, reports.size());

    }

    @Test
    public void showFactTablesForValidTopicsAndSachgebiete() throws NotYetImplementedException {
        setRightParamValue(Right.CREATE_ANALYSIS, RightParam.TOPIC_AREA, "240,450");
        setRightParamValue(Right.CREATE_ANALYSIS, RightParam.TOPIC, "exa:25", false);
        List<FactTable> facts = biAnalysis.listFactTables();
        assertEquals(11, facts.size()); // 1 für exa, 5 für res
        setRightParamValue(Right.CREATE_ANALYSIS, RightParam.TOPIC, "exa:25,res:105,res_nom:1");
        facts = biAnalysis.listFactTables();
        assertEquals(3, facts.size()); // 1 für exa, 2 für res
    }

    private int saveDummyReportForFactTable(String factId, String name) {
        StoredReport report = new StoredReport();
        report.definition = "{\"factTableId\": \"" + factId + "\" }";
        report.name = name;
        return dbAdapter.saveReportDefinition(report);
    }

    private void truncateSavedReports() {
        new JdbcTemplate(dataSource).execute("truncate table metadata.rw_report_definitions");
    }

}