/// Version 1.0.0
/// Last modified 24.5.2014
///
/// Copyright (C) 2014 Ilkka Rautiainen.
///
/// Halyri-system is a prototype emergency call system. Its purpose is to
/// demonstrate the use of the advanced capabilities available in the current
/// generation smartphones in facilitating the emergency service dispatcher's
/// capability to determine the nature of the emergency and to dispatch help.
///
/// For more information, see the README file of this package.
///
/// The MIT License (MIT)
///
/// Permission is hereby granted, free of charge, to any person obtaining a copy
/// of this software and associated documentation files (the "Software"), to
/// deal in the Software without restriction, including without limitation the
/// rights to use, copy, modify, merge, publish, distribute, sublicense,
/// and/or sell copies of the Software, and to permit persons to whom the
/// Software is furnished to do so, subject to the following conditions:
///
/// The above copyright notice and this permission notice shall be included in
/// all copies or substantial portions of the Software.
///
/// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
/// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
/// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
/// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
/// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
/// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
/// IN THE SOFTWARE.
///

using System;
using System.Diagnostics;
using System.Globalization;
using System.Windows.Data;

namespace Hake_WPF.Conversion
{
    /// <author>Ilkka Rautiainen</author>
    /// <summary>
    /// The class is used for converting the time in minutes to a string and back.
    /// </summary>
    [ValueConversion(typeof(int), typeof(String))]
    class MinuteConverter : IValueConverter
    {
        /// <summary>
        /// The function converts the minutes to a string of format "x h x min".
        /// </summary>
        /// <param name="value">The object that contains the integer value to convert.</param>
        /// <param name="targetType">The type that defines the target format for conversion.</param>
        /// <param name="parameter">The optional parameters.</param>
        /// <param name="culture">The culture information.</param>
        /// <returns>A string of format "x h x min".</returns>
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            int time = (int)value;
            return (time / 60) + " h " + (time % 60) + " min";
        }

        /// <summary>
        /// The function converts a string of format "x h x min" to minutes.
        /// </summary>
        /// <param name="value">The object that contains the string value to convert.</param>
        /// <param name="targetType">The type that defines the target format for conversion.</param>
        /// <param name="parameter">The optional parameters.</param>
        /// <param name="culture">The culture information.</param>
        /// <returns>The total converted minutes.</returns>
        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            string time = (string)value;
            string[] splitted = time.Split(' ');
            int hours;
            int minutes;
            if (!int.TryParse(splitted[0], out hours))
            {
                Debug.WriteLine("Parsing of hours failed. Parsed as 0.");
            }
            if (!int.TryParse(splitted[2], out minutes))
            {
                Debug.WriteLine("Parsing of minutes failed. Parsed as 0.");
            }
            return (60 * hours) + (60 * minutes);
        }
    }
}