package de.stadtbote.votian;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import de.stadtbote.votian.database.DatabaseDiagnostics;
import java.util.Arrays;
import org.springframework.boot.Banner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.WebApplicationType;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ConfigurableApplicationContext;

@SpringBootApplication
public class VotianApplication {
    public static void main(String[] args) {
        if (Arrays.asList(args).contains("--database-check")) {
            System.exit(databaseCheck());
        }
        SpringApplication.run(VotianApplication.class, args);
    }

    private static int databaseCheck() {
        SpringApplication application = new SpringApplication(VotianApplication.class);
        application.setWebApplicationType(WebApplicationType.NONE);
        application.setBannerMode(Banner.Mode.OFF);
        application.setLogStartupInfo(false);
        DatabaseDiagnostics.Result result;
        // Keep stdout machine-readable and prevent JDBC startup errors exposing connection details.
        try (ConfigurableApplicationContext context = application.run(
                "--spring.main.web-application-type=none", "--spring.main.banner-mode=off",
                "--logging.level.root=OFF", "--logging.level.com.zaxxer.hikari=OFF",
                "--logging.level.org.mariadb.jdbc=OFF")) {
            result = context.getBean(DatabaseDiagnostics.class).check();
        } catch (RuntimeException error) {
            result = DatabaseDiagnostics.failure("CONFIGURATION_ERROR",
                    "Backend-Konfiguration oder Datenbankverbindung prüfen.", null);
        }
        try {
            System.out.println(new ObjectMapper().writerWithDefaultPrettyPrinter().writeValueAsString(result.details()));
        } catch (JsonProcessingException error) {
            System.out.println("{\"connected\":false,\"reason\":\"DIAGNOSTIC_ERROR\",\"message\":\"Diagnose konnte nicht ausgegeben werden.\",\"writes\":0}");
            return 1;
        }
        return result.exitCode();
    }
}