using LCU.Library.Internal.FileOperationsModels.Models.NameSettings;
using LCU.Library.Internal.FileOperationsModels.Shared;
using System;
using System.Collections.Generic;
using Xunit;

namespace LCU.Api.Internal.FileOperationsTests.Shared
{
    public class DynamicNameBuilderTest
    {
        public DynamicNameBuilderTest()
        {   
        }

        [Fact]
        public void EmptyFileNameSettings_Return_FileName()
        {
            // arrange
            var name = "testfile.txt";
            var settings = new DynamicNameSetting();

            // act
            var result = DynamicNameBuilder.BuildDynamicName(name, settings);

            // assert
            Assert.Equal(name, result);
        }

        [Fact]
        public void NullFileNameSettings_Return_FileName()
        {
            // arrange
            var name = "testfile.txt";
            DynamicNameSetting settings = null;

            // act
            var result = DynamicNameBuilder.BuildDynamicName(name, settings);

            // assert
            Assert.Equal(name, result);
        }

        [Fact]
        public void Return_FileName_dd_MM()
        {
            // arrange
            var name = "testfile_{TestDate}.txt";
            var settings = new DynamicNameSetting();

            var dateFormatSetting = new DateFormatSetting();
            dateFormatSetting.Tag = "{TestDate}";
            dateFormatSetting.DateFormat = "dd_MM";
            settings.DateFormatSettings = new List<DateFormatSetting>();
            settings.DateFormatSettings.Add(dateFormatSetting);

            // act
            var result = DynamicNameBuilder.BuildDynamicName(name, settings);

            // assert
            Assert.Equal($"testfile_{DateTime.Now:dd_MM}.txt", result);
        }

        [Fact]
        public void Minus_One_Day_Return_FileName_dd_MM()
        {
            // arrange
            var name = "testfile_{TestDate}.txt";
            var settings = new DynamicNameSetting();
            settings.DaysFromToday = -1;

            var dateFormatSetting = new DateFormatSetting();
            dateFormatSetting.Tag = "{TestDate}";
            dateFormatSetting.DateFormat = "dd_MM";
            settings.DateFormatSettings = new List<DateFormatSetting>();
            settings.DateFormatSettings.Add(dateFormatSetting);

            // act
            var result = DynamicNameBuilder.BuildDynamicName(name, settings);

            // assert
            Assert.Equal($"testfile_{DateTime.Now.AddDays(-1):dd_MM}.txt", result);
        }

        [Fact]
        public void Multiple_Formats_sepratedby_dashs_Return_FileName_dd_MM_yyyy()
        {
            // arrange
            var name = "testfile_{TestDate}-{TestDate2}-{TestDate3}.txt";
            var settings = new DynamicNameSetting();
            settings.DateFormatSettings = new List<DateFormatSetting>();

            var dateFormatSetting1 = new DateFormatSetting();
            dateFormatSetting1.Tag = "{TestDate}";
            dateFormatSetting1.DateFormat = "dd";
            settings.DateFormatSettings.Add(dateFormatSetting1);

            var dateFormatSetting2 = new DateFormatSetting();
            dateFormatSetting2.Tag = "{TestDate2}";
            dateFormatSetting2.DateFormat = "MM";
            settings.DateFormatSettings.Add(dateFormatSetting2);

            var dateFormatSetting3 = new DateFormatSetting();
            dateFormatSetting3.Tag = "{TestDate3}";
            dateFormatSetting3.DateFormat = "yyyy";
            settings.DateFormatSettings.Add(dateFormatSetting3);

            // act
            var result = DynamicNameBuilder.BuildDynamicName(name, settings);

            // assert
            Assert.Equal($"testfile_{DateTime.Now:dd}-{DateTime.Now:MM}-{DateTime.Now:yyyy}.txt", result);
        }

        [Fact]
        public void Multiple_Formats_nosepration_Return_FileName_ddMMyyyy()
        {
            // arrange
            var fileName = "testfile_{TestDate}{TestDate2}{TestDate3}.txt";
            var settings = new DynamicNameSetting();
            settings.DateFormatSettings = new List<DateFormatSetting>();

            var dateFormatSetting1 = new DateFormatSetting();
            dateFormatSetting1.Tag = "{TestDate}";
            dateFormatSetting1.DateFormat = "dd";
            settings.DateFormatSettings.Add(dateFormatSetting1);

            var dateFormatSetting2 = new DateFormatSetting();
            dateFormatSetting2.Tag = "{TestDate2}";
            dateFormatSetting2.DateFormat = "MM";
            settings.DateFormatSettings.Add(dateFormatSetting2);

            var dateFormatSetting3 = new DateFormatSetting();
            dateFormatSetting3.Tag = "{TestDate3}";
            dateFormatSetting3.DateFormat = "yyyy";
            settings.DateFormatSettings.Add(dateFormatSetting3);

            // act
            var result = DynamicNameBuilder.BuildDynamicName(fileName, settings);

            // assert
            Assert.Equal($"testfile_{DateTime.Now:dd}{DateTime.Now:MM}{DateTime.Now:yyyy}.txt", result);
        }
    }
}