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/*
 * Sonatype Nexus (TM) Open Source Version
 * Copyright (c) 2008-present Sonatype, Inc.
 * All rights reserved. Includes the third-party code listed at http://links.sonatype.com/products/nexus/oss/attributions.
 *
 * This program and the accompanying materials are made available under the terms of the Eclipse Public License Version 1.0,
 * which accompanies this distribution and is available at http://www.eclipse.org/legal/epl-v10.html.
 *
 * Sonatype Nexus (TM) Professional Version is available from Sonatype, Inc. "Sonatype" and "Sonatype Nexus" are trademarks
 * of Sonatype, Inc. Apache Maven is a trademark of the Apache Software Foundation. M2eclipse is a trademark of the
 * Eclipse Foundation. All other trademarks are the property of their respective owners.
 */
package org.torquebox.mojo.rubygems.cuba;

import org.torquebox.mojo.rubygems.FileType;
import org.torquebox.mojo.rubygems.RubygemsFile;
import org.torquebox.mojo.rubygems.RubygemsFileFactory;
import org.torquebox.mojo.rubygems.layout.Layout;

import java.io.InputStream;

public class RubygemsFileSystem {
    private final Cuba cuba;

    private final RubygemsFileFactory factory;

    private final Layout getLayout;

    private final Layout postLayout;

    private final Layout deleteLayout;

    protected RubygemsFileSystem(RubygemsFileFactory factory,
                                 Layout getLayout,
                                 Layout postLayout,
                                 Layout deleteLayout,
                                 Cuba cuba) {
        this.cuba = cuba;
        this.factory = factory;
        this.getLayout = getLayout;
        this.postLayout = postLayout;
        this.deleteLayout = deleteLayout;
    }

    public RubygemsFile file(String path) {
        return visit(factory, path, null);
    }

    public RubygemsFile file(String path, String query) {
        return visit(factory, path, query);
    }

    public RubygemsFile get(String path) {
        return visit(getLayout, path, null);
    }

    public RubygemsFile get(String path, String query) {
        return visit(getLayout, path, query);
    }

    private RubygemsFile visit(RubygemsFileFactory factory, String originalPath, String query) {
        //normalize PATH-Separator from Windows platform to valid URL-Path
        //    https://github.com/sonatype/nexus-ruby-support/issues/38
        originalPath = originalPath.replace('\\', '/');
        if (!originalPath.startsWith("/")) {
            originalPath = "/" + originalPath;
        }
        String path = originalPath;
        if (query == null) {
            if (originalPath.contains("?")) {
                int index = originalPath.indexOf("?");
                if (index > -1) {
                    query = originalPath.substring(index + 1);
                    path = originalPath.substring(0, index);
                }
            } else {
                query = "";
            }
        }

        return new State(new Context(factory, originalPath, query), path, null).nested(cuba);
    }

    public RubygemsFile post(InputStream is, String path) {
        if (postLayout != null) {
            RubygemsFile file = visit(postLayout, path, "");
            if (!file.forbidden() && file.type() != FileType.NOT_FOUND) {
                post(is, file);
            }
            return file;
        }
        RubygemsFile file = visit(factory, path, "");
        file.markAsForbidden();
        return file;
    }

    public void post(InputStream is, RubygemsFile file) {
        postLayout.addGem(is, file);
    }

    public RubygemsFile delete(String path) {
        return visit(deleteLayout, path, "");
    }

    public String toString() {
        StringBuilder b = new StringBuilder(getClass().getSimpleName());
        b.append("<").append(cuba.getClass().getSimpleName()).append(">");
        return b.toString();
    }
}