package eu.dnetlib.dhp.schema.dump;

import java.io.*;
import java.lang.reflect.Type;
import java.net.URL;
import java.nio.file.Files;
import java.nio.file.Paths;

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import com.github.imifou.jsonschema.module.addon.AddonModule;
import com.github.victools.jsonschema.generator.*;

import eu.dnetlib.dhp.schema.dump.oaf.community.CommunityResult;
import eu.dnetlib.dhp.schema.dump.oaf.graph.*;

public class ExecCreateSchemas {
    final static String DIRECTORY = "/eu/dnetlib/dhp/schema/oaf/dump/jsonschemas/";
    SchemaGenerator generator;

    private void init(){

        AddonModule module = new AddonModule();
        SchemaGeneratorConfigBuilder configBuilder = new SchemaGeneratorConfigBuilder(
                new ObjectMapper().enable(SerializationFeature.INDENT_OUTPUT),
                SchemaVersion.DRAFT_7,
                OptionPreset.PLAIN_JSON)
                .with(module)
                .with(Option.SCHEMA_VERSION_INDICATOR)
                .without(Option.NONPUBLIC_NONSTATIC_FIELDS_WITHOUT_GETTERS);
        SchemaGeneratorConfig config = configBuilder.build();
        generator = new SchemaGenerator(config);
    }

    private void generate(Type targetType, String directory, String filename) throws IOException {
        JsonNode jsonSchema = generator.generateSchema(targetType);

        String dir = Paths.get(Paths.get(getClass().getResource("/").getPath()).toAbsolutePath() + directory).toString();

        if(!Files.exists(Paths.get(dir))){
            Files.createDirectories(Paths.get(dir));
        }

        if(!Files.exists(Paths.get(dir + "/" +  filename))) {
            Files.createFile(Paths.get(dir + "/" + filename));
        }

        File f  = new File(dir + "/" + filename);

        try(PrintWriter writer = new PrintWriter(new BufferedWriter(new FileWriter(f)))) {
            writer.println(new ObjectMapper().writerWithDefaultPrettyPrinter().writeValueAsString(jsonSchema));
        }


    }
    public static void main(String[] args) throws IOException {

         ExecCreateSchemas ecs = new ExecCreateSchemas();
         ecs.init();
         ecs.generate(GraphResult.class, DIRECTORY , "result_schema.json");
        ecs.generate(ResearchCommunity.class, DIRECTORY , "community_infrastructure_schema.json");
        ecs.generate(Datasource.class, DIRECTORY , "datasource_schema.json");
        ecs.generate(Project.class, DIRECTORY , "project_schema.json");
        ecs.generate(Relation.class, DIRECTORY , "relation_schema.json");
        ecs.generate(Organization.class, DIRECTORY , "organization_schema.json");

        ecs.generate(CommunityResult.class, DIRECTORY , "community_result_schema.json");





    }
}