// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using System.IO;
using Xunit;
 
namespace Microsoft.AspNetCore.Razor.Language;
 
public class DefaultRazorProjectItemTest
{
    private static string TestFolder { get; } = Path.Combine(
        TestProject.GetProjectDirectory(typeof(DefaultRazorProjectFileSystemTest), layer: TestProject.Layer.Compiler),
        "TestFiles",
        "DefaultRazorProjectFileSystem");
 
    [Fact]
    public void DefaultRazorProjectItem_SetsProperties()
    {
        // Arrange
        var fileInfo = new FileInfo(Path.Combine(TestFolder, "Home.cshtml"));
 
        // Act
        var projectItem = new DefaultRazorProjectItem("/", "/Home.cshtml", "Home.cshtml", RazorFileKind.ComponentImport, fileInfo, "MyCssScope");
 
        // Assert
        Assert.Equal("/Home.cshtml", projectItem.FilePath);
        Assert.Equal("/", projectItem.BasePath);
        Assert.True(projectItem.Exists);
        Assert.Equal("Home.cshtml", projectItem.FileName);
        Assert.Equal(RazorFileKind.ComponentImport, projectItem.FileKind);
        Assert.Equal(fileInfo.FullName, projectItem.PhysicalPath);
        Assert.Equal("Home.cshtml", projectItem.RelativePhysicalPath);
        Assert.Equal("MyCssScope", projectItem.CssScope);
    }
 
    [Fact]
    public void DefaultRazorProjectItem_InfersFileKind_Component()
    {
        // Arrange
        var fileInfo = new FileInfo(Path.Combine(TestFolder, "Home.cshtml"));
 
        // Act
        var projectItem = new DefaultRazorProjectItem("/", "/Home.razor", "Home.razor", fileKind: null, fileInfo, cssScope: null);
 
        // Assert
        Assert.Equal(RazorFileKind.Component, projectItem.FileKind);
    }
 
    [Fact]
    public void DefaultRazorProjectItem_InfersFileKind_Legacy()
    {
        // Arrange
        var fileInfo = new FileInfo(Path.Combine(TestFolder, "Home.cshtml"));
 
        // Act
        var projectItem = new DefaultRazorProjectItem("/", "/Home.cshtml", "Home.cshtml", fileKind: null, fileInfo, cssScope: null);
 
        // Assert
        Assert.Equal(RazorFileKind.Legacy, projectItem.FileKind);
    }
 
    [Fact]
    public void DefaultRazorProjectItem_InfersFileKind_Null()
    {
        // Arrange
        var fileInfo = new FileInfo(Path.Combine(TestFolder, "Home.cshtml"));
 
        // Act
        var projectItem = new DefaultRazorProjectItem("/", filePath: null, "Home.cshtml", fileKind: null, fileInfo, cssScope: null);
 
        // Assert
        Assert.Equal(RazorFileKind.None, projectItem.FileKind);
    }
 
    [Fact]
    public void Exists_ReturnsFalseWhenFileDoesNotExist()
    {
        // Arrange
        var fileInfo = new FileInfo(Path.Combine(TestFolder, "Views", "FileDoesNotExist.cshtml"));
 
        // Act
        var projectItem = new DefaultRazorProjectItem(
            "/Views", "/FileDoesNotExist.cshtml", Path.Combine("Views", "FileDoesNotExist.cshtml"), fileKind: null, fileInfo, cssScope: null);
 
        // Assert
        Assert.False(projectItem.Exists);
    }
 
    [Fact]
    public void Read_ReturnsReadStream()
    {
        // Arrange
        var fileInfo = new FileInfo(Path.Combine(TestFolder, "Home.cshtml"));
        var projectItem = new DefaultRazorProjectItem("/", "/Home.cshtml", "Home.cshtml", fileKind: null, fileInfo, cssScope: null);
 
        // Act
        var stream = projectItem.Read();
 
        // Assert
        Assert.Equal("home-content", new StreamReader(stream).ReadToEnd());
    }
}