using Aurora.Api.Devices;
using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using System.Windows.Controls;

namespace AuroraUIComponent.Util
{

    /// <summary>
    /// int 범위 체크 Validation (Simple)
    /// </summary>
    public class IntRangeValidationRule : ValidationRule
    {
        public int MinValue { get; set; } = int.MinValue;
        public int MaxValue { get; set; } = int.MaxValue;

        public override ValidationResult Validate(object value, CultureInfo cultureInfo)
        {
            if (value == null || string.IsNullOrWhiteSpace(value.ToString())) {
                //return new ValidationResult(false, "Input cannot be empty.");
                return ValidationResult.ValidResult;
            }

            string input = value.ToString();

            //string pattern = @"^\d+\s*~\s*\d+$";    // [int] ~ [int]
            //if (Regex.IsMatch(input, pattern)) {
            //    return ValidationResult.ValidResult;
            //}

            //pattern = @"^(\d+)(,\d+)*$";            // comma-separated list
            //if (Regex.IsMatch(input, pattern)) {
            //    return ValidationResult.ValidResult;
            //}

            string pattern = @"^(\d+~\d+|\d+)(,(\d+~\d+|\d+))*$";       // comma-separated list & [int] ~ [int] 조합
            if (Regex.IsMatch(input, pattern)) {

                var splitList = input.Split(',');

                foreach (var splitToken in splitList) {
                    if (splitToken.Contains('~')) {     // [int] ~ [int]
                        var splitList2 = splitToken.Split('~');
                        if (splitList2.Count() < 2) {
                            return new ValidationResult(false, $"Incompleted");
                        }
                        if (!int.TryParse(splitList2[0], out int value0)) {
                            return new ValidationResult(false, $"Incompleted");
                        }
                        if (!int.TryParse(splitList2[1], out int value1)) {
                            return new ValidationResult(false, $"Incompleted");
                        }

                        if (MinValue > value0 || MaxValue < value0) {
                            return new ValidationResult(false, $"Over Range (Valid : {MinValue} ~ {MaxValue})");
                        }

                        if (MinValue > value1 || MaxValue < value1) {
                            return new ValidationResult(false, $"Over Range (Valid : {MinValue} ~ {MaxValue})");
                        }
                    } else {                            // single [int]
                        if (!int.TryParse(splitToken, out int value0)) {
                            return new ValidationResult(false, $"Over Integer Range");
                        }

                        if (MinValue > value0 || MaxValue < value0) {
                            return new ValidationResult(false, $"Over Range (Valid : {MinValue} ~ {MaxValue})");
                        }
                    }
                }

                return ValidationResult.ValidResult;
            }

            return new ValidationResult(false, $"Not Supported Format [{value}]");
        }

        public List<int> Parse(string value)
        {
            string pattern = @"^(\d+~\d+|\d+)(,(\d+~\d+|\d+))*$";       // comma-separated list & [int] ~ [int] 조합

            if (Regex.IsMatch(value, pattern)) {
                var splitList = value.Split(',');
                List<int> result = new List<int>();

                foreach (var splitToken in splitList) {
                    if (splitToken.Contains('~')) {     // [int] ~ [int]
                        var splitList2 = splitToken.Split('~');
                        if (splitList2.Count() < 2) {
                            continue;
                        }
                        if (!int.TryParse(splitList2[0], out int value0)) {
                            continue;
                        }
                        if (!int.TryParse(splitList2[1], out int value1)) {
                            continue;
                        }

                        // 사용자 입력은 1~1776 으로 입력받고, parsing할 때에는 -1 해서 0~1775로 저장
                        for (int i = Math.Min(value0, value1); i <= Math.Max(value0, value1); i++) {
                            if (!result.Contains(i) && MinValue <= i && MaxValue >= i) {
                                result.Add(i);
                            }
                        }
                    } else {                            // single [int]
                        if (int.TryParse(splitToken, out int value0)) {
                            if (!result.Contains(value0) && MinValue <= value0 && MaxValue >= value0) {
                                result.Add(value0);
                            }
                        }
                    }
                }

                result.Sort();

                return result;
            }

            return null;
        }

        public void SetRange(Range<int> range)
        {
            if (range != null) {
                MinValue = range.Min;
                MaxValue = range.Max;
            }
        }
    }

    /// <summary>
    /// int 범위 체크, 구간설정(예: 1~4), Comma-separated(1,2,5) 지원하는 Validation
    /// </summary>
    public class IntRangeParsingValidationRule : ValidationRule
    {
        public int MinValue { get; set; } = int.MinValue;
        public int MaxValue { get; set; } = int.MaxValue;

        public override ValidationResult Validate(object value, CultureInfo cultureInfo)
        {
            if (value == null || string.IsNullOrWhiteSpace(value.ToString())) {
                //return new ValidationResult(false, "Input cannot be empty.");
                return ValidationResult.ValidResult;
            }

            string input = value.ToString();

            //string pattern = @"^\d+\s*~\s*\d+$";    // [int] ~ [int]
            //if (Regex.IsMatch(input, pattern)) {
            //    return ValidationResult.ValidResult;
            //}

            //pattern = @"^(\d+)(,\d+)*$";            // comma-separated list
            //if (Regex.IsMatch(input, pattern)) {
            //    return ValidationResult.ValidResult;
            //}

            string pattern = @"^(\d+~\d+|\d+)(,(\d+~\d+|\d+))*$";       // comma-separated list & [int] ~ [int] 조합
            if (Regex.IsMatch(input, pattern)) {

                var splitList = input.Split(',');

                foreach (var splitToken in splitList) {
                    if (splitToken.Contains('~')) {     // [int] ~ [int]
                        var splitList2 = splitToken.Split('~');
                        if (splitList2.Count() < 2) {
                            return new ValidationResult(false, $"Incompleted");
                        }
                        if (!int.TryParse(splitList2[0], out int value0)) {
                            return new ValidationResult(false, $"Incompleted");
                        }
                        if (!int.TryParse(splitList2[1], out int value1)) {
                            return new ValidationResult(false, $"Incompleted");
                        }

                        if (MinValue > value0 || MaxValue < value0) {
                            return new ValidationResult(false, $"Over Range (Valid : {MinValue} ~ {MaxValue})");
                        }

                        if (MinValue > value1 || MaxValue < value1) {
                            return new ValidationResult(false, $"Over Range (Valid : {MinValue} ~ {MaxValue})");
                        }
                    } else {                            // single [int]
                        if (!int.TryParse(splitToken, out int value0)) {
                            return new ValidationResult(false, $"Over Integer Range");
                        }

                        if (MinValue > value0 || MaxValue < value0) {
                            return new ValidationResult(false, $"Over Range (Valid : {MinValue} ~ {MaxValue})");
                        }
                    }
                }

                return ValidationResult.ValidResult;
            }

            return new ValidationResult(false, $"Not Supported Format [{value}]");
        }

        public List<int> Parse(string value)
        {
            string pattern = @"^(\d+~\d+|\d+)(,(\d+~\d+|\d+))*$";       // comma-separated list & [int] ~ [int] 조합

            if (Regex.IsMatch(value, pattern)) {
                var splitList = value.Split(',');
                List<int> result = new List<int>();

                foreach (var splitToken in splitList) {
                    if (splitToken.Contains('~')) {     // [int] ~ [int]
                        var splitList2 = splitToken.Split('~');
                        if (splitList2.Count() < 2) {
                            continue;
                        }
                        if (!int.TryParse(splitList2[0], out int value0)) {
                            continue;
                        }
                        if (!int.TryParse(splitList2[1], out int value1)) {
                            continue;
                        }

                        // 사용자 입력은 1~1776 으로 입력받고, parsing할 때에는 -1 해서 0~1775로 저장
                        for (int i = Math.Min(value0, value1); i <= Math.Max(value0, value1); i++) {
                            if (!result.Contains(i) && MinValue <= i && MaxValue >= i) {
                                result.Add(i);
                            }
                        }
                    } else {                            // single [int]
                        if (int.TryParse(splitToken, out int value0)) {
                            if (!result.Contains(value0) && MinValue <= value0 && MaxValue >= value0) {
                                result.Add(value0);
                            }
                        }
                    }
                }

                result.Sort();

                return result;
            }

            return null;
        }
    }



    /// <summary>
    /// double 범위 체크 Validation
    /// </summary>
    public class DoubleRangeValidationRule : ValidationRule
    {
        public double MinValue { get; set; } = double.MinValue;
        public double MaxValue { get; set; } = double.MaxValue;

        public override ValidationResult Validate(object value, CultureInfo cultureInfo)
        {
            string input = value.ToString();

            double parsedValue = 0;
            // single [double]
            if (!int.TryParse(input, out int value1)) {
                if (!double.TryParse(input, out double value0)) {
                    return new ValidationResult(false, $"Cannot Parse to Double");
                } else {
                    parsedValue = value0;
                }
            } else {
                parsedValue = value1;
            }

            if (MinValue > parsedValue || MaxValue < parsedValue) {
                return new ValidationResult(false, $"Over Range (Valid : {MinValue} ~ {MaxValue})");
            }

            return ValidationResult.ValidResult;
        }

        public void SetRange(Range<double> range)
        {
            if (range != null) {
                MinValue = range.Min;
                MaxValue = range.Max;
            }
        }

        public void SetRange(double x, double y)
        {
            MinValue = Math.Min(x, y);
            MaxValue = Math.Max(x, y);
        }
    }
}