using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Xunit;
using XUnity.AutoTranslator.Plugin.Core.Configuration;
using XUnity.AutoTranslator.Plugin.Core.Extensions;

namespace XUnity.AutoTranslator.Plugin.Core.Tests
{
   public class UntranslatedTextTests
   {
      [Theory( DisplayName = "Can_Trim_Surrounding_Whitespace" )]
      [InlineData( "  Hello  ", "Hello", "  ", "  " )]
      [InlineData( " Hello", "Hello", " ", null )]
      [InlineData( "Hello", "Hello", null, null )]
      [InlineData( "\r\n \r\nHello", "Hello", "\r\n \r\n", null )]
      [InlineData( "\r\n \r\nHello\n", "Hello", "\r\n \r\n", "\n" )]
      [InlineData( "\r\r\r\r\n \n　Hello  \r\n", "Hello", "\r\r\r\r\n \n　", "  \r\n" )]
      public void Can_Trim_Surrounding_Whitespace( string input, string expectedTrimmedText, string expectedLeadingWhitespace, string expectedTrailingWhitespace )
      {
         Settings.UsesWhitespaceBetweenWords = false;

         var untranslatedText = new UntranslatedText( input, false, false );

         Assert.Equal( input, untranslatedText.TranslatableText );
         Assert.Equal( expectedTrimmedText, untranslatedText.TrimmedTranslatableText );
         Assert.Equal( expectedLeadingWhitespace, untranslatedText.LeadingWhitespace );
         Assert.Equal( expectedTrailingWhitespace, untranslatedText.TrailingWhitespace );
      }

      [Theory( DisplayName = "Can_Trim_Internal_Whitespace_English" )]
      [InlineData( "What are you doing?", "What are you doing?" )]
      [InlineData( "What are\nyou doing?", "What are you doing?" )]
      [InlineData( "What are\n\nyou doing?", "What are\n\nyou doing?" )]
      [InlineData( "What are\n\n \n\nyou doing?", "What are\n\n\n\nyou doing?" )]
      [InlineData( "What are\n\n  \n\nyou doing?", "What are\n\n  \n\nyou doing?" )]
      [InlineData( "What are\n  \nyou doing?", "What are  you doing?" )]
      public void Can_Trim_Internal_Whitespace_English( string input, string expectedTrimmedText )
      {
         Settings.UsesWhitespaceBetweenWords = true;

         var untranslatedText = new UntranslatedText( input, false, true );

         Assert.Equal( expectedTrimmedText, untranslatedText.TrimmedTranslatableText );
      }

      [Theory( DisplayName = "Can_Trim_Internal_Whitespace" )]
      [InlineData( "Hel lo", "Hel lo" )]
      [InlineData( "Hel\r\n lo", "Hello" )]
      [InlineData( "Hel\n\nlo", "Hel\n\nlo" )]
      [InlineData( "Hello\nWhat\nYou", "HelloWhatYou" )]
      [InlineData( "Hello\n\nWhat\nYou", "Hello\n\nWhatYou" )]
      public void Can_Trim_Internal_Whitespace( string input, string expectedTrimmedText )
      {
         Settings.UsesWhitespaceBetweenWords = false;

         var untranslatedText = new UntranslatedText( input, false, true );
         
         Assert.Equal( expectedTrimmedText, untranslatedText.TrimmedTranslatableText );
      }

      [Theory( DisplayName = "Can_Trim_Internal_And_Surrounding_Whitespace" )]
      [InlineData( "\r\n \r\nHe llo", "He llo", "\r\n \r\n", null )]
      [InlineData( "\r\n \r\nHe   llo", "He   llo", "\r\n \r\n", null )]
      [InlineData( "\r\n \r\nHel\r\nlo\n", "Hello", "\r\n \r\n", "\n" )]
      [InlineData( "\r\n \r\nHel\n\nlo\n", "Hel\n\nlo", "\r\n \r\n", "\n" )]
      [InlineData( "\r\n \r\nHel\n\n lo\n", "Hel\n\nlo", "\r\n \r\n", "\n" )]
      [InlineData( "\r\n \r\nHel\n\n  lo\n", "Hel\n\n  lo", "\r\n \r\n", "\n" )]
      [InlineData( "\r\n \r\nHel  \n\n  lo\n", "Hel  \n\n  lo", "\r\n \r\n", "\n" )]
      [InlineData( "\r\n \r\nHel  \n  lo\n", "Hel    lo", "\r\n \r\n", "\n" )]
      [InlineData( "\r\n \r\nHel \n lo\n", "Hello", "\r\n \r\n", "\n" )]
      [InlineData( "\r\r\r\r\n \n　Hell\no  \r\n", "Hello", "\r\r\r\r\n \n　", "  \r\n" )]
      public void Can_Trim_Internal_And_Surrounding_Whitespace( string input, string expectedTrimmedText, string expectedLeadingWhitespace, string expectedTrailingWhitespace )
      {
         Settings.UsesWhitespaceBetweenWords = false;

         var untranslatedText = new UntranslatedText( input, false, true );

         Assert.Equal( expectedTrimmedText, untranslatedText.TrimmedTranslatableText );
         Assert.Equal( expectedLeadingWhitespace, untranslatedText.LeadingWhitespace );
         Assert.Equal( expectedTrailingWhitespace, untranslatedText.TrailingWhitespace );
      }

      [Theory( DisplayName = "Can_Trim_Internal_And_Surrounding_Whitespace_And_Template" )]
      [InlineData( "\r\n \r\nFPS: 60.53", "FPS: {{A}}", "\r\n \r\n", null )]
      [InlineData( "\r\n \r\nFPS:   60.53", "FPS:   {{A}}", "\r\n \r\n", null )]
      [InlineData( "\r\n \r\nFPS:\n 60.53", "FPS:{{A}}", "\r\n \r\n", null )]
      [InlineData( "\r\n \r\nFPS:\n  60.53", "FPS:  {{A}}", "\r\n \r\n", null )]
      [InlineData( "\r\n \r\nFPS:\n \n 60.53", "FPS:{{A}}", "\r\n \r\n", null )]
      [InlineData( "\r\n \r\nFPS:\n  \n 60.53", "FPS:  {{A}}", "\r\n \r\n", null )]
      public void Can_Trim_Internal_And_Surrounding_Whitespace_And_Template( string input, string expectedTrimmedText, string expectedLeadingWhitespace, string expectedTrailingWhitespace )
      {
         Settings.UsesWhitespaceBetweenWords = false;

         var untranslatedText = new UntranslatedText( input, true, true );

         Assert.Equal( expectedTrimmedText, untranslatedText.TrimmedTranslatableText );
         Assert.Equal( expectedLeadingWhitespace, untranslatedText.LeadingWhitespace );
         Assert.Equal( expectedTrailingWhitespace, untranslatedText.TrailingWhitespace );
      }
   }
}