using System;
using System.Collections.Generic;
using Util.Helpers;
using Util.Tests.Samples;
using Xunit;
using Convert = Util.Helpers.Convert;

namespace Util.Tests.Helpers; 

/// <summary>
/// 类型转换测试
/// </summary>
public class ConvertTest {

    #region ToInt

    /// <summary>
    /// 转换为整型
    /// </summary>
    /// <param name="input">输入值</param>
    /// <param name="result">结果</param>
    [Theory]
    [InlineData( null, 0 )]
    [InlineData( "", 0 )]
    [InlineData( "1A", 0 )]
    [InlineData( "0", 0 )]
    [InlineData( "1", 1 )]
    [InlineData( "1778019.78", 1778020 )]
    [InlineData( "1778019.7801684", 1778020 )]
    public void TestToInt( object input, int result ) {
        Assert.Equal( result, Convert.ToInt( input ) );
    }

    #endregion

    #region ToIntOrNull

    /// <summary>
    /// 转换为可空整型
    /// </summary>
    /// <param name="input">输入值</param>
    /// <param name="result">结果</param>
    [Theory]
    [InlineData( null, null )]
    [InlineData( "", null )]
    [InlineData( "1A", null )]
    [InlineData( "0", 0 )]
    [InlineData( "1", 1 )]
    [InlineData( "1778019.78", 1778020 )]
    [InlineData( "1778019.7801684", 1778020 )]
    public void TestToIntOrNull( object input, int? result ) {
        Assert.Equal( result, Convert.ToIntOrNull( input ) );
    }

    #endregion

    #region ToLong

    /// <summary>
    /// 转换为64位整型
    /// </summary>
    /// <param name="input">输入值</param>
    /// <param name="result">结果</param>
    [Theory]
    [InlineData( null, 0 )]
    [InlineData( "", 0 )]
    [InlineData( "1A", 0 )]
    [InlineData( "0", 0 )]
    [InlineData( "1", 1 )]
    [InlineData( "1778019.7801684", 1778020 )]
    [InlineData( "177801978016841234", 177801978016841234 )]
    public void TestToLong( object input, long result ) {
        Assert.Equal( result, Convert.ToLong( input ) );
    }

    #endregion

    #region ToLongOrNull

    /// <summary>
    /// 转换为64位可空整型
    /// </summary>
    /// <param name="input">输入值</param>
    /// <param name="result">结果</param>
    [Theory]
    [InlineData( null, null )]
    [InlineData( "", null )]
    [InlineData( "1A", null )]
    [InlineData( "0", 0L )]
    [InlineData( "1", 1L )]
    [InlineData( "1778019.7801684", 1778020L )]
    [InlineData( "177801978016841234", 177801978016841234L )]
    public void TestToLongOrNull( object input, long? result ) {
        Assert.Equal( result, Convert.ToLongOrNull( input ) );
    }

    #endregion

    #region ToFloat

    /// <summary>
    /// 转换为32位浮点型
    /// </summary>
    /// <param name="input">输入值</param>
    /// <param name="result">结果</param>
    /// <param name="digits">小数位数</param>
    [Theory]
    [InlineData( null, 0, null )]
    [InlineData( "", 0, null )]
    [InlineData( "1A", 0, null )]
    [InlineData( "0", 0, null )]
    [InlineData( "1", 1, null )]
    [InlineData( "1.2", 1.2, null )]
    [InlineData( "12.346", 12.35, 2 )]
    public void TestToFloat( object input, float result, int? digits ) {
        Assert.Equal( result, Convert.ToFloat( input, digits ) );
    }

    #endregion

    #region ToFloatOrNull

    /// <summary>
    /// 转换为32位可空浮点型
    /// </summary>
    /// <param name="input">输入值</param>
    /// <param name="result">结果</param>
    /// <param name="digits">小数位数</param>
    [Theory]
    [InlineData( null, null, null )]
    [InlineData( "", null, null )]
    [InlineData( "1A", null, null )]
    [InlineData( "0", 0f, null )]
    [InlineData( "1", 1f, null )]
    [InlineData( "1.2", 1.2f, null )]
    [InlineData( "12.346", 12.35f, 2 )]
    public void TestToFloatOrNull( object input, float? result, int? digits ) {
        Assert.Equal( result, Convert.ToFloatOrNull( input, digits ) );
    }

    #endregion

    #region ToDouble

    /// <summary>
    /// 转换为64位浮点型
    /// </summary>
    /// <param name="input">输入值</param>
    /// <param name="result">结果</param>
    /// <param name="digits">小数位数</param>
    [Theory]
    [InlineData( null, 0, null )]
    [InlineData( "", 0, null )]
    [InlineData( "1A", 0, null )]
    [InlineData( "0", 0, null )]
    [InlineData( "1", 1, null )]
    [InlineData( "1.2", 1.2, null )]
    [InlineData( "12.235", 12.24, 2 )]
    [InlineData( "12.345", 12.34, 2 )]
    [InlineData( "12.3451", 12.35, 2 )]
    [InlineData( "12.346", 12.35, 2 )]
    public void TestToDouble( object input, double result, int? digits ) {
        Assert.Equal( result, Convert.ToDouble( input, digits ) );
    }

    #endregion

    #region ToDoubleOrNull

    /// <summary>
    /// 转换为64位可空浮点型
    /// </summary>
    /// <param name="input">输入值</param>
    /// <param name="result">结果</param>
    /// <param name="digits">小数位数</param>
    [Theory]
    [InlineData( null, null, null )]
    [InlineData( "", null, null )]
    [InlineData( "1A", null, null )]
    [InlineData( "0", 0d, null )]
    [InlineData( "1", 1d, null )]
    [InlineData( "1.2", 1.2, null )]
    [InlineData( "12.355", 12.36, 2 )]
    public void TestToDoubleOrNull( object input, double? result, int? digits ) {
        Assert.Equal( result, Convert.ToDoubleOrNull( input, digits ) );
    }

    #endregion

    #region ToDecimal

    /// <summary>
    /// 转换为128位浮点型
    /// </summary>
    /// <param name="input">输入值</param>
    /// <param name="result">结果</param>
    /// <param name="digits">小数位数</param>
    [Theory]
    [InlineData( null, 0, null )]
    [InlineData( "", 0, null )]
    [InlineData( "1A", 0, null )]
    [InlineData( "0", 0, null )]
    [InlineData( "1", 1, null )]
    [InlineData( "1.2", 1.2, null )]
    [InlineData( "12.235", 12.24, 2 )]
    [InlineData( "12.345", 12.34, 2 )]
    [InlineData( "12.3451", 12.35, 2 )]
    [InlineData( "12.346", 12.35, 2 )]
    public void TestToDecimal( object input, decimal result, int? digits ) {
        Assert.Equal( result, Convert.ToDecimal( input, digits ) );
    }

    #endregion

    #region ToDecimalOrNull

    /// <summary>
    /// 转换为128位可空浮点型，验证
    /// </summary>
    /// <param name="input">输入值</param>
    /// <param name="result">结果</param>
    /// <param name="digits">小数位数</param>
    [Theory]
    [InlineData( null, null, null )]
    [InlineData( "", null, null )]
    [InlineData( "1A", null, null )]
    [InlineData( "1A", null, 2 )]
    public void TestToDecimalOrNull_Validate( object input, decimal? result, int? digits ) {
        Assert.Equal( result, Convert.ToDecimalOrNull( input, digits ) );
    }

    /// <summary>
    /// 转换为128位可空浮点型，输入值为"0"
    /// </summary>
    [Fact]
    public void TestToDecimalOrNull() {
        Assert.Equal( 0M, Convert.ToDecimalOrNull( "0" ) );
        Assert.Equal( 1.2M, Convert.ToDecimalOrNull( "1.2" ) );
        Assert.Equal( 23.46M, Convert.ToDecimalOrNull( "23.456", 2 ) );
    }

    #endregion

    #region ToBool

    /// <summary>
    /// 转换为布尔型
    /// </summary>
    /// <param name="input">输入值</param>
    /// <param name="result">结果</param>
    [Theory]
    [InlineData( null, null )]
    [InlineData( "false", false )]
    [InlineData( "true", true )]
    [InlineData( 0, false )]
    [InlineData( 1, true )]
    [InlineData( "0", false )]
    [InlineData( "1", true )]
    public void TestToBool( object input, bool result ) {
        Assert.Equal( result, Convert.ToBool( input ) );
    }

    #endregion

    #region ToBoolOrNull

    /// <summary>
    /// 转换为可空布尔型
    /// </summary>
    /// <param name="input">输入值</param>
    /// <param name="result">结果</param>
    [Theory]
    [InlineData( null, null )]
    [InlineData( "false", false )]
    [InlineData( "true", true )]
    [InlineData( 0, false )]
    [InlineData( 1, true )]
    [InlineData( "0", false )]
    [InlineData( "1", true )]
    public void TestToBoolOrNull( object input, bool? result ) {
        Assert.Equal( result, Convert.ToBoolOrNull( input ) );
    }

    #endregion

    #region ToDateTime

    /// <summary>
    /// 转换为日期，验证
    /// </summary>
    [Fact]
    public void TestToDateTime_Validate() {
        Assert.Equal( DateTime.MinValue, Convert.ToDateTime( null ) );
        Assert.Equal( DateTime.MinValue, Convert.ToDateTime( "" ) );
        Assert.Equal( DateTime.MinValue, Convert.ToDateTime( "1A" ) );
    }

    /// <summary>
    /// 转换为日期
    /// </summary>
    [Fact]
    public void TestToDateTime() {
        Assert.Equal( new DateTime( 2000, 1, 1 ), Convert.ToDateTime( "2000-1-1" ) );
    }

    #endregion

    #region ToDateTimeOrNull

    /// <summary>
    /// 转换为可空日期，验证
    /// </summary>
    /// <param name="input">输入值</param>
    /// <param name="result">结果</param>
    [Theory]
    [InlineData( null, null )]
    [InlineData( "", null )]
    [InlineData( "1A", null )]
    public void TestToDateTimeOrNull_Validate( object input, DateTime? result ) {
        Assert.Equal( result, Convert.ToDateTimeOrNull( input ) );
    }

    /// <summary>
    /// 转换为可空日期
    /// </summary>
    [Fact]
    public void TestToDateTimeOrNull() {
        Assert.Equal( new DateTime( 2000, 1, 1 ), Convert.ToDateTimeOrNull( "2000-1-1" ) );
    }

    #endregion

    #region ToGuid

    /// <summary>
    /// 转换为Guid，验证
    /// </summary>
    [Fact]
    public void TestToGuid_Validate() {
        Assert.Equal( Guid.Empty, Convert.ToGuid( null ) );
        Assert.Equal( Guid.Empty, Convert.ToGuid( "" ) );
        Assert.Equal( Guid.Empty, Convert.ToGuid( "1A" ) );
    }

    /// <summary>
    /// 转换为Guid
    /// </summary>
    [Fact]
    public void TestToGuid() {
        Assert.Equal( new Guid( "B9EB56E9-B720-40B4-9425-00483D311DDC" ), Convert.ToGuid( "B9EB56E9-B720-40B4-9425-00483D311DDC" ) );
    }

    #endregion

    #region ToGuidOrNull

    /// <summary>
    /// 转换为可空Guid，验证
    /// </summary>
    /// <param name="input">输入值</param>
    /// <param name="result">结果</param>
    [Theory]
    [InlineData( null, null )]
    [InlineData( "", null )]
    [InlineData( "1A", null )]
    public void TestToGuidOrNull_Validate( object input, Guid? result ) {
        Assert.Equal( result, Convert.ToGuidOrNull( input ) );
    }

    /// <summary>
    /// 转换为可空Guid - 转换字符串
    /// </summary>
    [Fact]
    public void TestToGuidOrNull_1() {
        Assert.Equal( new Guid( "B9EB56E9-B720-40B4-9425-00483D311DDC" ), Convert.ToGuidOrNull( "B9EB56E9-B720-40B4-9425-00483D311DDC" ) );
    }

    /// <summary>
    /// 转换为可空Guid - 转换字节数组
    /// </summary>
    [Fact]
    public void TestToGuidOrNull_2() {
        var guid = Guid.NewGuid();
        var bytes = guid.ToByteArray();
        Assert.Equal( guid, Convert.ToGuidOrNull( bytes ) );
    }

    /// <summary>
    /// 转换为可空Guid - 转换字节数组 - 空guid
    /// </summary>
    [Fact]
    public void TestToGuidOrNull_3() {
        var guid = Guid.Empty;
        var bytes = guid.ToByteArray();
        Assert.Equal( guid, Convert.ToGuidOrNull( bytes ) );
    }

    #endregion

    #region ToGuidList

    /// <summary>
    /// 转换为Guid集合
    /// </summary>
    [Fact]
    public void TestToGuidList() {
        Assert.Empty( Convert.ToGuidList( null ) );
        Assert.Empty( Convert.ToGuidList( "" ) );

        const string guid = "83B0233C-A24F-49FD-8083-1337209EBC9A";
        Assert.Single( Convert.ToGuidList( guid ) );
        Assert.Equal( new Guid( guid ), Convert.ToGuidList( guid )[0] );

        const string guid2 = "83B0233C-A24F-49FD-8083-1337209EBC9A,EAB523C6-2FE7-47BE-89D5-C6D440C3033A";
        Assert.Equal( 2, Convert.ToGuidList( guid2 ).Count );
        Assert.Equal( new Guid( "83B0233C-A24F-49FD-8083-1337209EBC9A" ), Convert.ToGuidList( guid2 )[0] );
        Assert.Equal( new Guid( "EAB523C6-2FE7-47BE-89D5-C6D440C3033A" ), Convert.ToGuidList( guid2 )[1] );
    }

    /// <summary>
    /// 转换为Guid集合
    /// </summary>
    [Fact]
    public void TestToGuidList_2() {
        const string guid = "83B0233C-A24F-49FD-8083-1337209EBC9A,,EAB523C6-2FE7-47BE-89D5-C6D440C3033A,";
        Assert.Equal( 2, Convert.ToGuidList( guid ).Count );
        Assert.Equal( new Guid( "83B0233C-A24F-49FD-8083-1337209EBC9A" ), Convert.ToGuidList( guid )[0] );
        Assert.Equal( new Guid( "EAB523C6-2FE7-47BE-89D5-C6D440C3033A" ), Convert.ToGuidList( guid )[1] );
    }

    #endregion

    #region ToList

    /// <summary>
    /// 泛型集合转换
    /// </summary>
    [Fact]
    public void TestToList() {
        Assert.Empty( Convert.ToList<string>( null ) );
        Assert.Single( Convert.ToList<string>( "1" ) );
        Assert.Equal( 2, Convert.ToList<string>( "1,2" ).Count );
        Assert.Equal( 2, Convert.ToList<int>( "1,2" )[1] );
    }

    #endregion

    #region To

    /// <summary>
    /// 测试通用泛型转换
    /// </summary>
    [Fact]
    public void TestTo() {
        Assert.Null( Convert.To<string>( "" ) );
        Assert.Equal( "1A", Convert.To<string>( "1A" ) );
        Assert.Equal( 0, Convert.To<int>( null ) );
        Assert.Equal( 0, Convert.To<int>( "" ) );
        Assert.Equal( 0, Convert.To<int>( "2A" ) );
        Assert.Equal( 1, Convert.To<int>( "1" ) );
        Assert.Null( Convert.To<int?>( null ) );
        Assert.Null( Convert.To<int?>( "" ) );
        Assert.Null( Convert.To<int?>( "3A" ) );
        Assert.Equal( Guid.Empty, Convert.To<Guid>( "" ) );
        Assert.Equal( Guid.Empty, Convert.To<Guid>( "4A" ) );
        Assert.Equal( new Guid( "B9EB56E9-B720-40B4-9425-00483D311DDC" ), Convert.To<Guid>( "B9EB56E9-B720-40B4-9425-00483D311DDC" ) );
        Assert.Equal( new Guid( "B9EB56E9-B720-40B4-9425-00483D311DDC" ), Convert.To<Guid?>( "B9EB56E9-B720-40B4-9425-00483D311DDC" ) );
        Assert.Equal( 12.5, Convert.To<double>( "12.5" ) );
        Assert.Equal( 12.5, Convert.To<double?>( "12.5" ) );
        Assert.Equal( 12.5M, Convert.To<decimal>( "12.5" ) );
        Assert.True( Convert.To<bool>( "true" ) );
        Assert.Equal( new DateTime( 2000, 1, 1 ), Convert.To<DateTime>( "2000-1-1" ) );
        Assert.Equal( new DateTime( 2000, 1, 1 ), Convert.To<DateTime?>( "2000-1-1" ) );
        var guid = Guid.NewGuid();
        Assert.Equal( guid.ToString(), Convert.To<string>( guid ) );
        Assert.Equal( EnumSample.C, Convert.To<EnumSample>( "c" ) );
    }

    /// <summary>
    /// 测试通用泛型转换 - 转换对象副本
    /// </summary>
    [Fact]
    public void TestTo_2() {
        Sample4 sample = new Sample4 { StringValue = "a" };
        var result = Convert.To<Sample4>( sample.GetClone() );
        Assert.Equal( "a", result?.StringValue );
    }

    /// <summary>
    /// 测试通用泛型转换 - 转换Json元素
    /// </summary>
    [Fact]
    public void TestTo_3() {
        //序列化再反序列化字典
        var dic = new Dictionary<string, object> {
            {"a", new Sample3 {StringValue = "a"}},
            {"b", new Sample3 {StringValue = "b"}}
        };
        var json = Json.ToJson( dic );
        dic = Json.ToObject<Dictionary<string, object>>( json );

        //从字典中获取元素并转换
        var element = dic["b"];
        var result = Convert.To<Sample3>( element );

        //验证
        Assert.Equal( "b", result?.StringValue );
    }

    #endregion

    #region ToDictionary

    /// <summary>
    /// 测试对象转换为属性名值对
    /// </summary>
    [Fact]
    public void TestToDictionary_1() {
        var sample = new Sample2 {
            BoolValue = true,
            Description = "Description",
            StringValue = "StringValue",
            IntValue = 2,
            Display = "Display",
            NullableBoolValue = true,
            DisplayName = "DisplayName",
            DisplayName2 = "DisplayName2",
            Test3 = new Sample3 { StringValue = "a" },
            TestList = new List<Sample3> { new() { StringValue = "a" }, new() { StringValue = "b" } }
        };
        var result = Convert.ToDictionary( sample );
        Assert.Equal( 10, result.Count );
        Assert.Equal( "Description", result["Description"] );
        Assert.Equal( "Display", result["Display"] );
        Assert.Equal( "DisplayName", result["DisplayName"] );
        Assert.Equal( "DisplayName2", result["DisplayName2"] );
        Assert.Equal( 2, result["IntValue"] );
    }

    /// <summary>
    /// 测试对象转换为属性名值对
    /// </summary>
    [Fact]
    public void TestToDictionary_2() {
        var sample = new Sample2 {
            BoolValue = true,
            Description = "Description",
            StringValue = "StringValue",
            IntValue = 2,
            Display = "Display",
            NullableBoolValue = true,
            DisplayName = "DisplayName",
            DisplayName2 = "DisplayName2",
            Test3 = new Sample3 { StringValue = "a" },
            TestList = new List<Sample3> { new() { StringValue = "a" }, new() { StringValue = "b" } }
        };
        var result = Convert.ToDictionary( sample,true );
        Assert.Equal( 10, result.Count );
        Assert.Equal( "Description", result["描述"] );
        Assert.Equal( "Display", result["Display"] );
        Assert.Equal( "DisplayName", result["显示名"] );
        Assert.Equal( "DisplayName2", result["DisplayName2"] );
        Assert.Equal( 2, result["IntValue"] );
    }

    /// <summary>
    /// 测试对象转换为属性名值对 - 传入字典
    /// </summary>
    [Fact]
    public void TestToDictionary_3() {
        var content = new Dictionary<string, object> {
            { "Code", "a" },
            { "Price", 0 }
        };
        var result = Convert.ToDictionary( content );
        Assert.Equal( 2, result.Count );
        Assert.Equal( "a", result["Code"] );
        Assert.Equal( 0, result["Price"] );
    }

    #endregion
}