/* **********************************************************************************
 *
 * Copyright (c) Microsoft Corporation. All rights reserved.
 *
 * This source code is subject to terms and conditions of the Microsoft Public
 * License (Ms-PL). A copy of the license can be found in the license.htm file
 * included in this distribution.
 *
 * You must not remove this notice, or any other, from this software.
 *
 * **********************************************************************************/

using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Text;
using System.Web;
using System.Web.Hosting;

namespace LibCassini {

    //
    // Internal class provides helpers for string formatting of HTTP responses
    //
    public static class Messages {

        const string _httpErrorFormat1 = 
@"<html>
    <head>
        <title>{0}</title>
";

        public static string VersionString = typeof(Server).Assembly.GetName().Version.ToString();

        const string _httpStyle = 
@"        <style>
        	body {font-family:""Verdana"";font-weight:normal;font-size: 8pt;color:black;} 
        	p {font-family:""Verdana"";font-weight:normal;color:black;margin-top: -5px}
        	b {font-family:""Verdana"";font-weight:bold;color:black;margin-top: -5px}
        	h1 { font-family:""Verdana"";font-weight:normal;font-size:18pt;color:red }
        	h2 { font-family:""Verdana"";font-weight:normal;font-size:14pt;color:maroon }
        	pre {font-family:""Lucida Console"";font-size: 8pt}
        	.marker {font-weight: bold; color: black;text-decoration: none;}
        	.version {color: gray;}
        	.error {margin-bottom: 10px;}
        	.expandable { text-decoration:underline; font-weight:bold; color:navy; cursor:hand; }
        </style>
";

        static string _httpErrorFormat2 = 
@"    </head>
    <body bgcolor=""white"">

            <span><h1>Server Error in '{0}' Application.<hr width=100% size=1 color=silver></h1>

            <h2> <i>HTTP Error {1} - {2}.</i> </h2></span>

            <hr width=100% size=1 color=silver>

            <b>Version Information:</b>&nbsp;Cassini Web Server " + VersionString + @"

            </font>

    </body>
</html>
";

        const string _dirListingFormat1 = 
@"<html>
    <head>
    <title>Directory Listing -- {0}</title>
";

        const string _dirListingFormat2 = 
@"    </head>
    <body bgcolor=""white"">

    <h2> <i>Directory Listing -- {0}</i> </h2></span>

            <hr width=100% size=1 color=silver>

<PRE>
";

        static string _dirListingTail =
@"</PRE>
            <hr width=100% size=1 color=silver>

            <b>Version Information:</b>&nbsp;Cassini Web Server " + VersionString + @"

            </font>

    </body>
</html>
";

        const string _dirListingParentFormat =
@"<A href=""{0}"">[To Parent Directory]</A>

";

        const string _dirListingFileFormat =
@"{0,38:dddd, MMMM dd, yyyy hh:mm tt} {1,12:n0} <A href=""{2}"">{3}</A>
";

        const string _dirListingDirFormat =
@"{0,38:dddd, MMMM dd, yyyy hh:mm tt}        &lt;dir&gt; <A href=""{1}/"">{2}</A>
";


        public static string FormatErrorMessageBody(int statusCode, string appName) {
            string desc = HttpWorkerRequest.GetStatusDescription(statusCode);

            return string.Format(_httpErrorFormat1, desc)
                   + _httpStyle
                   + string.Format(_httpErrorFormat2, appName, statusCode, desc);
        }

        public static string FormatDirectoryListing(string dirPath, string parentPath, FileSystemInfo[] elements) {
            StringBuilder sb = new StringBuilder();

            sb.Append(string.Format(_dirListingFormat1, dirPath));
            sb.Append(_httpStyle);
            sb.Append(string.Format(_dirListingFormat2, dirPath));

            if (parentPath != null) {
                if (!parentPath.EndsWith("/"))
                    parentPath += "/";
                sb.Append(string.Format(_dirListingParentFormat, parentPath));
            }

            if (elements != null) {
                for (int i = 0; i < elements.Length; i++) {
                    if (elements[i] is FileInfo) {
                        FileInfo fi = (FileInfo)elements[i];
                        sb.Append(string.Format(_dirListingFileFormat,
                            fi.LastWriteTime, fi.Length, fi.Name, fi.Name));
                    }
                    else if (elements[i] is DirectoryInfo) {
                        DirectoryInfo di = (DirectoryInfo)elements[i];
                        sb.Append(string.Format(_dirListingDirFormat,
                            di.LastWriteTime, di.Name, di.Name));
                    }
                }
            }

            sb.Append(_dirListingTail);
            return sb.ToString();
        }

    }
}
