/*
  * Copyright (c) 2022 LG Electronics Inc.
  * SPDX-License-Identifier: LicenseRef-LGE-Proprietary
  */
using System;
using System.Globalization;
using System.Windows.Data;

namespace AuroraUIComponent.UIConverter
{
    /// <summary>
    /// 지정한 값 (CommandParameter)과의 비교
    /// </summary>
    public class EqualConverter : IValueConverter, IMultiValueConverter
    {
        public object TrueValue { get; set; } = true;
        public object FalseValue { get; set; } = false;

        public enum ConverterType { OBJECT, STRING, INT, DOUBLE, FLOAT}
        public object CompareValue { get; set; }
        public ConverterType CompareValueType { get; set; } = ConverterType.OBJECT;

        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (CompareValue == null) { return value == null; }

            switch (CompareValueType) {
                case ConverterType.OBJECT:
                    return CompareValue.Equals(value) ? TrueValue : FalseValue;
                case ConverterType.STRING:
                    return CompareValue.ToString().Equals(value.ToString()) ? TrueValue : FalseValue;
                case ConverterType.INT:
                    return System.Convert.ToInt32(CompareValue).Equals(System.Convert.ToInt32(value)) ? TrueValue : FalseValue;
                case ConverterType.DOUBLE:
                    return System.Convert.ToDouble(CompareValue).Equals(System.Convert.ToDouble(value)) ? TrueValue : FalseValue;
                case ConverterType.FLOAT:
                    return System.Convert.ToSingle(CompareValue).Equals(System.Convert.ToSingle(value)) ? TrueValue : FalseValue;
                default:
                    return CompareValue.Equals(value) ? TrueValue : FalseValue;
            }
        }


        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }

        public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
        {
            if (values == null || values.Length < 2) { throw new NotImplementedException(); }
            if (values[0] == null || values[1] == null) { return FalseValue; }

            CompareValue = values[1];

            switch (CompareValueType) {
                case ConverterType.OBJECT:
                    return CompareValue.Equals(values[0]) ? TrueValue : FalseValue;
                case ConverterType.STRING:
                    return CompareValue.ToString().Equals(values[0].ToString()) ? TrueValue : FalseValue;
                case ConverterType.INT:
                    return System.Convert.ToInt32(CompareValue).Equals(System.Convert.ToInt32(values[0])) ? TrueValue : FalseValue;
                case ConverterType.DOUBLE:
                    return System.Convert.ToDouble(CompareValue).Equals(System.Convert.ToDouble(values[0])) ? TrueValue : FalseValue;
                case ConverterType.FLOAT:
                    return System.Convert.ToSingle(CompareValue).Equals(System.Convert.ToSingle(values[0])) ? TrueValue : FalseValue;
                default:
                    return CompareValue.Equals(values[0]) ? TrueValue : FalseValue;
            }

        }

        public object[] ConvertBack(object value, Type[] targetTypes, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }

    /// <summary>
    /// MultiValueBinding으로 들어온 2개 value 간의 동일성 체크
    /// </summary>
    public class EqualConverter2 : IMultiValueConverter
    {
        public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
        {
            if (values == null || values.Length < 2) { throw new NotImplementedException(); }

            if (values[0] is string strValue0 && values[1] is string strValue1 && strValue0 == strValue1) {
                return true;
            }
            if (values[0] is double doubleValue0 && values[1] is double doubleValue1 && doubleValue0 == doubleValue1) {
                return true;
            }
            if (values[0] is float floatValue0 && values[1] is float floatValue1 && floatValue0 == floatValue1) {
                return true;
            }
            if (values[0] is int intValue0 && values[1] is int intValue1 && intValue0 == intValue1) {
                return true;
            }
            if (values[0] is bool boolValue0 && values[1] is bool boolValue1 && boolValue0 == boolValue1) {
                return true;
            }

            return false;
        }

        public object[] ConvertBack(object value, Type[] targetTypes, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }

    public class LTConverter : IValueConverter, IMultiValueConverter
    {
        public object TrueValue { get; set; } = true;
        public object FalseValue { get; set; } = false;

        public enum ConverterType { INT, DOUBLE, FLOAT }
        public object CompareValue { get; set; }
        public ConverterType CompareValueType { get; set; } = ConverterType.DOUBLE;

        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            return Convert(value);
        }

        private object Convert(object value)
        {
            if (CompareValue == null) { throw new NotImplementedException(); }

            switch (CompareValueType) {
                case ConverterType.INT:
                    return System.Convert.ToInt32(CompareValue) < System.Convert.ToInt32(value) ? TrueValue : FalseValue;
                case ConverterType.DOUBLE:
                    return System.Convert.ToDouble(CompareValue) < System.Convert.ToDouble(value) ? TrueValue : FalseValue;
                case ConverterType.FLOAT:
                    return System.Convert.ToSingle(CompareValue) < System.Convert.ToSingle(value) ? TrueValue : FalseValue;
                default:
                    return CompareValue.Equals(value) ? TrueValue : FalseValue;
            }
        }


        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }

        public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
        {
            if (values == null || values.Length < 2) { throw new NotImplementedException(); }

            CompareValue = values[1];

            return Convert(values[0]);
        }

        public object[] ConvertBack(object value, Type[] targetTypes, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }

    public class GTConverter : IValueConverter, IMultiValueConverter
    {
        public object TrueValue { get; set; } = true;
        public object FalseValue { get; set; } = false;

        public enum ConverterType { INT, DOUBLE, FLOAT }
        public object CompareValue { get; set; }
        public ConverterType CompareValueType { get; set; } = ConverterType.DOUBLE;

        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            return Convert(value);
        }

        private object Convert(object value)
        {
            if (CompareValue == null) { throw new NotImplementedException(); }

            switch (CompareValueType) {
                case ConverterType.INT:
                    return System.Convert.ToInt32(CompareValue) > System.Convert.ToInt32(value) ? TrueValue : FalseValue;
                case ConverterType.DOUBLE:
                    return System.Convert.ToDouble(CompareValue) > System.Convert.ToDouble(value) ? TrueValue : FalseValue;
                case ConverterType.FLOAT:
                    return System.Convert.ToSingle(CompareValue) > System.Convert.ToSingle(value) ? TrueValue : FalseValue;
                default:
                    return CompareValue.Equals(value) ? TrueValue : FalseValue;
            }
        }


        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }

        public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
        {
            if (values == null || values.Length < 2) { throw new NotImplementedException(); }

            CompareValue = values[1];

            return Convert(values[0]);
        }

        public object[] ConvertBack(object value, Type[] targetTypes, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }

    /// <summary>
    /// 범위 내에 들어있는지 체크 (CompareValueLow <= value && value <= CompareValueHigh) -- EQ 포함 여부는 CompareValueLow / CompareValueHigh로 세팅 (default 포함)
    /// </summary>
    public class InRangeConverter : IValueConverter, IMultiValueConverter
    {
        public object TrueValue { get; set; } = true;
        public object FalseValue { get; set; } = false;

        public enum ConverterType { INT, DOUBLE, FLOAT }
        public object CompareValueLow { get; set; }
        public object CompareValueHigh { get; set; }

        public bool IncludeLowEq { get; set; } = true;
        public bool IncludeHighEq { get; set; } = true;

        public ConverterType CompareValueType { get; set; } = ConverterType.DOUBLE;

        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            return Convert(value);
        }

        private object Convert(object value)
        {
            if (CompareValueLow == null && CompareValueHigh == null) { throw new NotImplementedException(); }

            bool result = true;
            switch (CompareValueType) {
                case ConverterType.INT: {
                        bool ltCheck = CompareValueLow == null || (IncludeLowEq ? (System.Convert.ToInt32(CompareValueLow) <= System.Convert.ToInt32(value)) : (System.Convert.ToInt32(CompareValueLow) < System.Convert.ToInt32(value)));
                        bool gtCheck = CompareValueHigh == null || (IncludeHighEq ? (System.Convert.ToInt32(CompareValueHigh) >= System.Convert.ToInt32(value)) : (System.Convert.ToInt32(CompareValueHigh) > System.Convert.ToInt32(value)));
                        result = ltCheck && gtCheck;
                        break;
                    }
                case ConverterType.DOUBLE: {
                        bool ltCheck = CompareValueLow == null || (IncludeLowEq ? (System.Convert.ToDouble(CompareValueLow) <= System.Convert.ToDouble(value)) : (System.Convert.ToDouble(CompareValueLow) < System.Convert.ToDouble(value)));
                        bool gtCheck = CompareValueHigh == null || (IncludeHighEq ? (System.Convert.ToDouble(CompareValueHigh) >= System.Convert.ToDouble(value)) : (System.Convert.ToDouble(CompareValueHigh) > System.Convert.ToDouble(value)));
                        result = ltCheck && gtCheck;
                        break;
                    }
                case ConverterType.FLOAT: {
                        bool ltCheck = CompareValueLow == null || (IncludeLowEq ? (System.Convert.ToSingle(CompareValueLow) <= System.Convert.ToSingle(value)) : (System.Convert.ToSingle(CompareValueLow) < System.Convert.ToSingle(value)));
                        bool gtCheck = CompareValueHigh == null || (IncludeHighEq ? (System.Convert.ToSingle(CompareValueHigh) >= System.Convert.ToSingle(value)) : (System.Convert.ToSingle(CompareValueHigh) > System.Convert.ToSingle(value)));
                        result = ltCheck && gtCheck;
                        break;
                    }
                default:
                    throw new NotImplementedException();
            }

            return result ? TrueValue : FalseValue;
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }

        public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
        {
            if (values == null || values.Length < 3) { throw new NotImplementedException(); }

            CompareValueLow = values[1];
            CompareValueHigh = values[2];

            return Convert(values[0]);
        }

        public object[] ConvertBack(object value, Type[] targetTypes, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }

    public class MinConverter : IMultiValueConverter
    {
        public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
        {
            if (values != null && values.Length > 0) {
                if (targetType == typeof(double)) {
                    double result = (double)values[0];

                    for (int i = 1; i < values.Length; i++) {
                        if ((double)values[i] < result) result = (double)values[i];
                    }

                    return result;
                }

                if (targetType == typeof(int)) {
                    int result = (int)values[0];

                    for (int i = 1; i < values.Length; i++) {
                        if ((int)values[i] < result) result = (int)values[i];
                    }

                    return result;
                }
            }

            return null;
        }

        public object[] ConvertBack(object value, Type[] targetTypes, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }

    public class NullCheckConverter : EqualConverter
    {
        public new object CompareValue { get; set; } = null;
    }
}