/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.	See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.	 You may obtain a copy of the License at
 *
 *	 http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package org.apache.jmeter.protocol.http.util;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;

import org.apache.jmeter.config.ConfigTestElement;
import org.apache.jmeter.testelement.property.CollectionProperty;
import org.apache.jmeter.testelement.property.PropertyIterator;
import org.apache.jmeter.testelement.property.TestElementProperty;

/**
 * A set of HTTPFileArg objects.
 *
 */
public class HTTPFileArgs extends ConfigTestElement implements Serializable {

    /** The name of the property used to store the files. */
    private static final String HTTP_FILE_ARGS = "HTTPFileArgs.files"; //$NON-NLS-1$

	/**
	 * Create a new HTTPFileArgs object with no files.
	 */
	public HTTPFileArgs() {
		setProperty(new CollectionProperty(HTTP_FILE_ARGS, new ArrayList()));
	}

	/**
	 * Get the files.
	 *
	 * @return the files
	 */
	public CollectionProperty getHTTPFileArgsCollection() {
		return (CollectionProperty) getProperty(HTTP_FILE_ARGS);
	}

	/**
	 * Clear the files.
	 */
	public void clear() {
		super.clear();
		setProperty(new CollectionProperty(HTTP_FILE_ARGS, new ArrayList()));
	}

	/**
	 * Set the list of files. Any existing files will be lost.
	 *
	 * @param files the new files
	 */
	public void setHTTPFileArgs(List files) {
		setProperty(new CollectionProperty(HTTP_FILE_ARGS, files));
	}

	/**
	 * Add a new file with the given path.
	 *
	 * @param path
	 *	the path of the file
	 */
	public void addHTTPFileArg(String path) {
		addHTTPFileArg(new HTTPFileArg(path));
	}

	/**
	 * Add a new file.
	 *
	 * @param file
	 *	the new file
	 */
	public void addHTTPFileArg(HTTPFileArg file) {
		TestElementProperty newHTTPFileArg = new TestElementProperty(file.getPath(), file);
		if (isRunningVersion()) {
			this.setTemporary(newHTTPFileArg);
		}
		getHTTPFileArgsCollection().addItem(newHTTPFileArg);
	}

    /**
     * adds a new File to the HTTPFileArgs list to be uploaded with http
     * request.
     *
     * @param path file full path.
     * @param param http parameter name.
     * @param mime mime type of file.
     */
    public void addHTTPFileArg(String path, String param, String mime) {
        addHTTPFileArg(new HTTPFileArg(path, param, mime));
    }

	/**
	 * Get a PropertyIterator of the files.
	 *
	 * @return an iteration of the files
	 */
	public PropertyIterator iterator() {
		return getHTTPFileArgsCollection().iterator();
	}

	/**
	 * Get the current arguments as an array.
	 * 
	 * @return an array of file arguments
	 */
	public HTTPFileArg[] asArray(){
	    CollectionProperty props = getHTTPFileArgsCollection();
	    final int size = props.size();
        HTTPFileArg[] args = new HTTPFileArg[size];
        for(int i=0; i<size; i++){
            args[i]=(HTTPFileArg) props.get(i).getObjectValue();
        }
	    return args;
	}
	/**
	 * Create a string representation of the files.
	 *
	 * @return the string representation of the files
	 */
	public String toString() {
		StringBuffer str = new StringBuffer();
		PropertyIterator iter = getHTTPFileArgsCollection().iterator();
		while (iter.hasNext()) {
			HTTPFileArg file = (HTTPFileArg) iter.next().getObjectValue();
			str.append(file.getPath());
			if (iter.hasNext()) {
				str.append("&"); //$NON-NLS-1$
			}
		}
		return str.toString();
	}

	/**
	 * Remove the specified file from the list.
	 *
	 * @param row
	 *	the index of the file to remove
	 */
	public void removeHTTPFileArg(int row) {
		if (row < getHTTPFileArgCount()) {
			getHTTPFileArgsCollection().remove(row);
		}
	}

	/**
	 * Remove the specified file from the list.
	 *
	 * @param file
	 *	the file to remove
	 */
	public void removeHTTPFileArg(HTTPFileArg file) {
		PropertyIterator iter = getHTTPFileArgsCollection().iterator();
		while (iter.hasNext()) {
			HTTPFileArg item = (HTTPFileArg) iter.next().getObjectValue();
			if (file.equals(item)) {
				iter.remove();
			}
		}
	}

	/**
	 * Remove the file with the specified path.
	 *
	 * @param filePath
	 *	the path of the file to remove
	 */
	public void removeHTTPFileArg(String filePath) {
		PropertyIterator iter = getHTTPFileArgsCollection().iterator();
		while (iter.hasNext()) {
			HTTPFileArg file = (HTTPFileArg) iter.next().getObjectValue();
			if (file.getPath().equals(filePath)) {
				iter.remove();
			}
		}
	}

	/**
	 * Remove all files from the list.
	 */
	public void removeAllHTTPFileArgs() {
		getHTTPFileArgsCollection().clear();
	}

	/**
	 * Add a new empty file to the list. The new file will have the
	 * empty string as its path.
	 */
	public void addEmptyHTTPFileArg() {
		addHTTPFileArg(new HTTPFileArg(""));
	}

	/**
	 * Get the number of files in the list.
	 *
	 * @return the number of files
	 */
	public int getHTTPFileArgCount() {
		return getHTTPFileArgsCollection().size();
	}

	/**
	 * Get a single file.
	 *
	 * @param row
	 *	the index of the file to return.
	 * @return the file at the specified index, or null if no file
	 *	exists at that index.
	 */
	public HTTPFileArg getHTTPFileArg(int row) {
		HTTPFileArg file = null;
		if (row < getHTTPFileArgCount()) {
			file = (HTTPFileArg) getHTTPFileArgsCollection().get(row).getObjectValue();
		}
		return file;
	}
}
