/* Copyright (c) Citrix Systems, Inc. 
 * All rights reserved. 
 * 
 * Redistribution and use in source and binary forms, 
 * with or without modification, are permitted provided 
 * that the following conditions are met: 
 * 
 * *   Redistributions of source code must retain the above 
 *     copyright notice, this list of conditions and the 
 *     following disclaimer. 
 * *   Redistributions in binary form must reproduce the above 
 *     copyright notice, this list of conditions and the 
 *     following disclaimer in the documentation and/or other 
 *     materials provided with the distribution. 
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
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 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 
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using System;
using System.Collections.Generic;
using XenCenterLib;

namespace XenAdmin.Actions
{
    public class FibreChannelDevice : IComparable<FibreChannelDevice>
    {
        public readonly String Serial;
        public readonly String Path;
        public readonly long Size;
        public readonly String Vendor;
        public readonly String SCSIid;
        public readonly String adapter;
        public readonly String channel;
        public readonly String id;
        public readonly String lun;
        public readonly String name_label;
        public readonly String name_description;
        public readonly bool pool_metadata_detected;
        public readonly String eth;

        public FibreChannelDevice(String serial, String path,
            String vendor, long size, String SCSIid, String adapter,
            String channel, String id, String lun)
        {
            this.Serial = serial;
            this.Path = path;
            this.Vendor = vendor;
            this.Size = size;
            this.SCSIid = SCSIid;
            this.adapter = adapter;
            this.channel = channel;
            this.id = id;
            this.lun = lun;
            this.name_label = "";
            this.name_description = "";
            this.pool_metadata_detected = false;
        }

        public FibreChannelDevice(Dictionary<string, string> dict)
        {
            Vendor = dict.ContainsKey("vendor") ? dict["vendor"] : "";
            Serial = dict.ContainsKey("serial") ? dict["serial"] : "";
            Path = dict.ContainsKey("path") ? dict["path"] : "";
            adapter = dict.ContainsKey("adapter") ? dict["adapter"] : "";
            channel = dict.ContainsKey("channel") ? dict["channel"] : "";
            id = dict.ContainsKey("id") ? dict["id"] : "";
            lun = dict.ContainsKey("lun") ? dict["lun"] : "";
            name_label = dict.ContainsKey("name_label") ? dict["name_label"] : "";
            name_description = dict.ContainsKey("name_description") ? dict["name_description"] : "";
            eth = dict.ContainsKey("eth") ? dict["eth"] : "";

            SCSIid = dict.ContainsKey("scsiid")
                ? dict["scsiid"]
                : dict.ContainsKey("SCSIid")
                    ? dict["SCSIid"] : "";

            if (!dict.ContainsKey("size") || !TryParseSizeWithUnits(dict["size"], out Size))
                Size = 0;

            if (!dict.ContainsKey("pool_metadata_detected") ||
                !bool.TryParse(dict["pool_metadata_detected"], out pool_metadata_detected))
                pool_metadata_detected = false;
        }

        public int CompareTo(FibreChannelDevice other)
        {
            long n = Size - other.Size;
            return n == 0 ? StringUtility.NaturalCompare(Serial, other.Serial) : (int)n;
        }

        /// <summary>
        /// Sometimes, the XML that is returned contains units.
        /// (SR.probe XML earlier than Miami GA.
        /// </summary>
        private bool TryParseSizeWithUnits(string p, out long size)
        {
            if (long.TryParse(p, out size))
                return true;

            p = p.ToLowerInvariant();

            if (p.Contains("kb"))
            {
                if (!long.TryParse(p.Replace("kb", ""), out size))
                    return false;

                size *= Util.BINARY_KILO;
                return true;
            }

            if (p.Contains("mb"))
            {
                if (!long.TryParse(p.Replace("mb", ""), out size))
                    return false;

                size *= Util.BINARY_MEGA;
                return true;
            }

            if (p.Contains("gb"))
            {
                if (!long.TryParse(p.Replace("mb", ""), out size))
                    return false;

                size *= Util.BINARY_GIGA;
                return true;
            }

            return false;
        }
    }
}