using System;
using Masuit.Tools.Strings;

namespace Masuit.Tools;

public static class ValueTypeConvertExtensions
{
    /// <summary>
    /// 字符串转int
    /// </summary>
    /// <param name="s">源字符串</param>
    /// <param name="defaultValue">转换失败的默认值</param>
    /// <returns>int类型的数字</returns>
    public static int ToInt32(this string s, int defaultValue = 0)
    {
        return s.TryConvertTo(defaultValue);
    }

    /// <summary>
    /// 字符串转long
    /// </summary>
    /// <param name="s">源字符串</param>
    /// <param name="defaultValue">转换失败的默认值</param>
    /// <returns>int类型的数字</returns>
    public static long ToInt64(this string s, long defaultValue = 0)
    {
        return s.TryConvertTo(defaultValue);
    }

    /// <summary>
    /// 字符串转double
    /// </summary>
    /// <param name="s">源字符串</param>
    /// <param name="defaultValue">转换失败的默认值</param>
    /// <returns>double类型的数据</returns>
    public static double ToDouble(this string s, double defaultValue = 0)
    {
        return s.TryConvertTo(defaultValue);
    }

    /// <summary>
    /// 字符串转decimal
    /// </summary>
    /// <param name="s">源字符串</param>
    /// <param name="defaultValue">转换失败的默认值</param>
    /// <returns>int类型的数字</returns>
    public static decimal ToDecimal(this string s, decimal defaultValue = 0)
    {
        return s.TryConvertTo(defaultValue);
    }

    /// <summary>
    /// 字符串转decimal
    /// </summary>
    /// <param name="s">源字符串</param>
    /// <param name="round">小数位数</param>
    /// <param name="defaultValue">转换失败的默认值</param>
    /// <returns>int类型的数字</returns>
    public static decimal ToDecimal(this string s, int round, decimal defaultValue = 0)
    {
        return Math.Round(s.TryConvertTo(defaultValue), round, MidpointRounding.AwayFromZero);
    }

    /// <summary>
    /// 转double
    /// </summary>
    /// <param name="num"></param>
    /// <returns>double类型的数据</returns>
    public static double ToDouble(this decimal num)
    {
        return (double)num;
    }

    /// <summary>
    /// 将double转换成int
    /// </summary>
    /// <param name="num">double类型</param>
    /// <returns>int类型</returns>
    public static int ToInt32(this double num)
    {
        return (int)Math.Floor(num);
    }

    /// <summary>
    /// 将double转换成int
    /// </summary>
    /// <param name="num">double类型</param>
    /// <returns>int类型</returns>
    public static int ToInt32(this decimal num)
    {
        return (int)Math.Floor(num);
    }

    /// <summary>
    /// 将int转换成double
    /// </summary>
    /// <param name="num">int类型</param>
    /// <returns>int类型</returns>
    public static double ToDouble(this int num)
    {
        return num * 1.0;
    }

    /// <summary>
    /// 将int转换成decimal
    /// </summary>
    /// <param name="num">int类型</param>
    /// <returns>int类型</returns>
    public static decimal ToDecimal(this int num)
    {
        return new decimal(num);
    }

    /// <summary>
    /// 保留小数
    /// </summary>
    /// <param name="num"></param>
    /// <param name="decimals"></param>
    /// <param name="mode">四舍五入策略</param>
    /// <returns></returns>
    public static decimal Round(this decimal num, int decimals, MidpointRounding mode = MidpointRounding.AwayFromZero)
    {
        num = Math.Round(num, decimals, mode);
        return num;
    }

    /// <summary>
    /// 保留小数
    /// </summary>
    /// <param name="num"></param>
    /// <param name="decimals"></param>
    /// <param name="mode">四舍五入策略</param>
    /// <returns></returns>
    public static double Round(this double num, int decimals, MidpointRounding mode = MidpointRounding.AwayFromZero)
    {
        num = Math.Round(num, decimals, mode);
        return num;
    }

    /// <summary>
    /// 保留小数
    /// </summary>
    /// <param name="num"></param>
    /// <param name="decimals"></param>
    /// <param name="mode">四舍五入策略</param>
    /// <returns></returns>
    public static decimal? Round(this decimal? num, int decimals, MidpointRounding mode = MidpointRounding.AwayFromZero)
    {
        if (num.HasValue)
        {
            num = Math.Round(num.Value, decimals, mode);
        }
        return num;
    }

    /// <summary>
    /// 保留小数
    /// </summary>
    /// <param name="num"></param>
    /// <param name="decimals"></param>
    /// <param name="mode">四舍五入策略</param>
    /// <returns></returns>
    public static double? Round(this double? num, int decimals, MidpointRounding mode = MidpointRounding.AwayFromZero)
    {
        if (num.HasValue)
        {
            num = Math.Round(num.Value, decimals, mode);
        }
        return num;
    }

    /// <summary>
    /// 转换为中文数字格式
    /// </summary>
    /// <param name="number"></param>
    /// <returns></returns>
    public static string ToChineseNumber(this IConvertible number)
    {
        return NumberFormater.ToChineseNumber(number);
    }

    /// <summary>
    /// 数字转中文金额大写
    /// </summary>
    /// <param name="number"></param>
    /// <returns></returns>
    public static string ToChineseMoney(this IConvertible number)
    {
        return NumberFormater.ToChineseMoney(number);
    }
}