package org.simantics.scl.compiler.tests;

import org.simantics.scl.compiler.environment.Environment;
import org.simantics.scl.compiler.environment.specification.EnvironmentSpecification;
import org.simantics.scl.compiler.module.repository.ImportFailureException;
import org.simantics.scl.compiler.module.repository.ModuleRepository;
import org.simantics.scl.compiler.source.repository.CompositeModuleSourceRepository;
import org.simantics.scl.compiler.source.repository.SourceRepositories;
import org.simantics.scl.osgi.SCLOsgi;

public class InitialRepository {
    public static final boolean NO_PRELUDE = false;
    
    private static ModuleRepository MODULE_REPOSITORY1 = new ModuleRepository(
            new CompositeModuleSourceRepository(
                    SourceRepositories.BUILTIN_SOURCE_REPOSITORY,
                    SourceRepositories.PRELUDE_SOURCE_REPOSITORY
                    ));
    
    public static EnvironmentSpecification DEFAULT_ENVIRONMENT_SPECIFICATION = new EnvironmentSpecification();
    static {
        DEFAULT_ENVIRONMENT_SPECIFICATION.importModule("Builtin", "");
        DEFAULT_ENVIRONMENT_SPECIFICATION.importModule("Prelude", "");
    }
    
    public static ModuleRepository getInitialRepository() {
        if(NO_PRELUDE)
            return new ModuleRepository(SourceRepositories.BUILTIN_SOURCE_REPOSITORY);
        else if(MODULE_REPOSITORY1.getModule("Prelude").didSucceed())
            return MODULE_REPOSITORY1;
        else
            return SCLOsgi.MODULE_REPOSITORY;
    }
    
    public static Environment getDefaultEnvironment() throws ImportFailureException {
        return getInitialRepository().createEnvironment(DEFAULT_ENVIRONMENT_SPECIFICATION, null);
    }
}