package org.shedlang.compiler.config;

import org.shedlang.compiler.config.errors.ConfigError;
import org.shedlang.compiler.config.json.Json5ObjectWithSource;
import org.shedlang.compiler.parser.SourceParser;
import org.shedlang.compiler.sources.FileFragmentSource;
import org.shedlang.compiler.sources.SourceTexts;
import org.shedlang.compiler.tokeniser.UnexpectedTokenException;
import org.shedlang.compiler.types.NamespaceName;

import java.text.MessageFormat;

public record BinConfig(String name, NamespaceName mainNamespace) {
    public static BinConfig fromJson5(Json5ObjectWithSource object) {
        var name = object.getString("name").value();

        var mainNamespaceString = object.getString("mainNamespace");

        try {
            var sourceText = SourceTexts.string(mainNamespaceString.value());
            var mainNamespace = SourceParser.parseNamespaceName(sourceText);
            return new BinConfig(name, mainNamespace);
        } catch (UnexpectedTokenException exception) {
            throw new ConfigError(
                MessageFormat.format(
                    "Invalid namespace name.\n{0}\n\n{1}",
                    exception.getMessage(),
                    exception.source().describe()
                ),
                new FileFragmentSource(mainNamespaceString.sourceRange())
            );
        }
    }
}