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package cdc.mf.html.adaptors;

import java.io.File;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.stringtemplate.v4.Interpreter;
import org.stringtemplate.v4.ST;
import org.stringtemplate.v4.misc.ObjectModelAdaptor;
import org.stringtemplate.v4.misc.STNoSuchPropertyException;

import cdc.issues.Issue;
import cdc.mf.html.MfHtmlGenerationArgs;
import cdc.mf.html.MfHtmlGenerationHint;
import cdc.mf.html.MfParams;

public class IssueAdaptor extends ObjectModelAdaptor {
    private final MfHtmlGenerationArgs args;

    private static final Pattern DESCRIPTION = Pattern.compile("^description\\((.*)\\)$");

    public IssueAdaptor(MfHtmlGenerationArgs args) {
        this.args = args;
    }

    @Override
    public synchronized Object getProperty(Interpreter interp,
                                           ST self,
                                           Issue issue,
                                           Object property,
                                           String propertyName) throws STNoSuchPropertyException {
        switch (propertyName) {
        case "number":
            return args.getNumber(issue);
        case "htmlId":
            return MfParams.getHtmlId(issue, args);
        case "id":
            return MfParams.getId(issue);
        case "issueRef":
            // The down path
            if (args.getHints().contains(MfHtmlGenerationHint.SINGLE_PAGE)) {
                return "#" + MfParams.getHtmlId(issue, args);
            } else {
                return toString(MfParams.Files.getHtmlIssuesFile()) + "#" + MfParams.getHtmlId(issue, args);
            }
        case "ruleRef":
            // The down path
            if (args.getHints().contains(MfHtmlGenerationHint.SINGLE_PAGE)) {
                return "#" + MfParams.getHtmlId(issue.getRuleId());
            } else {
                return toString(MfParams.Files.getHtmlProfileFile()) + "#" + MfParams.getHtmlId(issue.getRuleId());
            }

        default:
            break;
        }

        final Matcher m = DESCRIPTION.matcher(propertyName);
        if (m.matches()) {
            final String upPath = m.group(1);
            return MfParams.toHtml(issue.getDescription(), upPath, args);
        }

        return super.getProperty(interp, self, issue, property, propertyName);
    }

    private static String toString(File file) {
        return file == null ? "???" : file.getPath().replace('\\', '/');
    }
}