using Explorer.Application;

namespace Explorer.Application.Tests;

public class MarkdownParserTests
{
    [Fact]
    public void Parses_headings_lists_and_tables()
    {
        var doc = MarkdownParser.Parse("""
            # Title

            Intro paragraph.

            ## Locations

            - One
            - Two

            | A | B |
            | --- | --- |
            | 1 | 2 |
            """);
        Assert.Contains(doc.Blocks, b => b is MarkdownHeading h && h.Level == 1 && h.Text == "Title");
        Assert.Equal("Locations", Assert.Single(doc.Headings).Text);
        var list = Assert.IsType<MarkdownList>(doc.Blocks.First(b => b is MarkdownList));
        Assert.Equal(["One", "Two"], list.Items);
        var table = Assert.IsType<MarkdownTable>(doc.Blocks.First(b => b is MarkdownTable));
        Assert.Equal(["A", "B"], table.Headers);
        Assert.Equal(["1", "2"], Assert.Single(table.Rows));
    }

    [Fact]
    public void Parses_fenced_code()
    {
        var doc = MarkdownParser.Parse("""
            ```powershell
            dotnet build
            ```
            """);
        var code = Assert.IsType<MarkdownCode>(Assert.Single(doc.Blocks));
        Assert.Equal("powershell", code.Language);
        Assert.Equal("dotnet build", code.Text);
    }

    [Fact]
    public void User_guide_in_the_repo_parses()
    {
        var dir = new DirectoryInfo(AppContext.BaseDirectory);
        string? path = null;
        while (dir is not null)
        {
            var candidate = Path.Combine(dir.FullName, "docs", "Documentation.md");
            if (File.Exists(candidate))
            {
                path = candidate;
                break;
            }

            dir = dir.Parent;
        }

        Assert.NotNull(path);
        var doc = MarkdownParser.Parse(File.ReadAllText(path));
        Assert.Contains(doc.Headings, h => h.Text == "Locations");
        Assert.Contains(doc.Headings, h => h.Text == "File Operations Queue");
        Assert.Contains(doc.Blocks, b => b is MarkdownTable);
    }
}