using Paca.Core.Config;
using Xunit;

namespace Paca.Tests.Core;

public class WorkspaceEncodingSanitizerTests
{
    [Fact]
    public void IsCorrupted_ReturnsTrue_ForUnicodeReplacementAndMojibake()
    {
        // Corrupted characters found in real user config.json
        string corrupted1 = "\uFFFD\u06FE\uFFFD";
        string corrupted2 = "\uFFFD\uFFFD\uFFFD\uFFFD";
        string corrupted3 = "\uFFFD\u043D\uFFFD";
        string corrupted4 = "??";
        string empty = "   ";

        Assert.True(WorkspaceConfigSanitizer.IsCorrupted(corrupted1));
        Assert.True(WorkspaceConfigSanitizer.IsCorrupted(corrupted2));
        Assert.True(WorkspaceConfigSanitizer.IsCorrupted(corrupted3));
        Assert.True(WorkspaceConfigSanitizer.IsCorrupted(corrupted4));
        Assert.True(WorkspaceConfigSanitizer.IsCorrupted(empty));
        Assert.True(WorkspaceConfigSanitizer.IsCorrupted(null));
    }

    [Fact]
    public void IsCorrupted_ReturnsFalse_ForValidKoreanAndEnglishNames()
    {
        Assert.False(WorkspaceConfigSanitizer.IsCorrupted("작업"));
        Assert.False(WorkspaceConfigSanitizer.IsCorrupted("개인"));
        Assert.False(WorkspaceConfigSanitizer.IsCorrupted("학습"));
        Assert.False(WorkspaceConfigSanitizer.IsCorrupted("기본"));
        Assert.False(WorkspaceConfigSanitizer.IsCorrupted("Work"));
        Assert.False(WorkspaceConfigSanitizer.IsCorrupted("Research 2026"));
    }

    [Fact]
    public void Sanitize_ReplacesAllCorruptedNamesWithCleanDefaults()
    {
        var corruptedList = new List<string> { "\uFFFD\u06FE\uFFFD", "\uFFFD\uFFFD\uFFFD\uFFFD", "\uFFFD\u043D\uFFFD" };
        var sanitized = WorkspaceConfigSanitizer.Sanitize(corruptedList);

        Assert.NotNull(sanitized);
        Assert.NotEmpty(sanitized);
        Assert.All(sanitized, name => Assert.False(WorkspaceConfigSanitizer.IsCorrupted(name)));
        Assert.Contains("작업", sanitized);
        Assert.Contains("개인", sanitized);
        Assert.Contains("학습", sanitized);
    }

    [Fact]
    public void Sanitize_PreservesValidNamesAndFiltersCorrupted()
    {
        var mixedList = new List<string> { "프로젝트A", "\uFFFD\u06FE\uFFFD", "디자인" };
        var sanitized = WorkspaceConfigSanitizer.Sanitize(mixedList);

        Assert.Equal(2, sanitized.Count);
        Assert.Equal("프로젝트A", sanitized[0]);
        Assert.Equal("디자인", sanitized[1]);
    }

    [Fact]
    public void AppConfig_Sanitize_CleansCorruptedWorkspaceNames()
    {
        var config = new AppConfig
        {
            WorkspaceNames = new List<string> { "\uFFFD\u06FE\uFFFD", "\uFFFD\uFFFD\uFFFD\uFFFD" }
        };

        config.Sanitize();

        Assert.NotNull(config.WorkspaceNames);
        Assert.All(config.WorkspaceNames, name => Assert.False(WorkspaceConfigSanitizer.IsCorrupted(name)));
        Assert.Equal("작업", config.WorkspaceNames[0]);
    }
}