using System.IO.Compression;
using System.Text;
using System.Text.Json;
using ClawdDotNet.Core.Tools;
using ClawdDotNet.Tools.FileRW;
using ClawdDotNet.Tools.Mail;
using Microsoft.Extensions.Logging.Abstractions;
using Shouldly;

namespace ClawdDotNet.Tools.Tests.FileRW;

/// <summary>#692: A Word file in the workspace is read as its text, and an attachment's name never leaves it.</summary>
public sealed class DocumentReadTests : IDisposable
{
    private readonly string _workspace = Path.Combine(Path.GetTempPath(), "clawd-tests", Guid.NewGuid().ToString("N"), "Workspace");

    public DocumentReadTests() => Directory.CreateDirectory(_workspace);

    public void Dispose()
    {
        try { Directory.Delete(Path.GetDirectoryName(_workspace)!, recursive: true); }
        catch { /* cleanup is secondary */ }
    }

    [Fact]
    public async Task Read_returns_the_text_of_a_word_document()
    {
        using (var zip = ZipFile.Open(Path.Combine(_workspace, "order.docx"), ZipArchiveMode.Create))
        using (var stream = zip.CreateEntry("word/document.xml").Open())
            stream.Write(Encoding.UTF8.GetBytes(
                """<w:document xmlns:w="http://schemas.openxmlformats.org/wordprocessingml/2006/main"><w:body><w:p><w:r><w:t>40 x Paper A4</w:t></w:r></w:p></w:body></w:document>"""));

        var context = new AgentToolContext("buyer", "inst", new Dictionary<string, object?>(), new NullStateStore(), NullLogger.Instance,
            CancellationToken.None, WorkspacePath: _workspace);
        var result = await new FileRWTool().ExecuteAsync(JsonDocument.Parse("""{"action":"read","path":"order.docx"}""").RootElement, context, CancellationToken.None);

        result.Success.ShouldBeTrue(result.ErrorMessage);
        result.Content.ShouldContain("text of a Word document");
        result.Content.ShouldContain("40 x Paper A4");
    }

    [Fact]
    public async Task Writing_a_word_document_stays_refused()
    {
        var context = new AgentToolContext("buyer", "inst", new Dictionary<string, object?>(), new NullStateStore(), NullLogger.Instance,
            CancellationToken.None, WorkspacePath: _workspace);
        var result = await new FileRWTool().ExecuteAsync(
            JsonDocument.Parse("""{"action":"write","path":"fake.docx","content":"x"}""").RootElement, context, CancellationToken.None);

        result.Success.ShouldBeFalse("only reading a document needs no place on the list");
    }

    [Theory]
    [InlineData("../../etc/passwd", "passwd")]
    [InlineData("..\\..\\Windows\\win.ini", "win.ini")]
    [InlineData("C:/x/invoice.pdf", "invoice.pdf")]
    [InlineData(".hidden", "hidden")]
    [InlineData("", "attachment")]
    [InlineData("a:b?c.txt", "a_b_c.txt")]
    public void An_attachment_name_is_a_file_name_and_nothing_more(string given, string expected)
        => MailTool.SafeFileName(given).ShouldBe(expected);
}