using System.Text;

using BlueCurve.Search.Document.Common;
using BlueCurve.Search.Indexer.Abstractions;
using BlueCurve.Search.Indexing;

namespace BlueCurve.Examples;

public sealed class PlainTextIndexer : IFile
{
    public Task<DocumentIndex?> IndexAsync(DocumentDownload document, FilePluginParameters parameters, CancellationToken cancellationToken)
    {
        cancellationToken.ThrowIfCancellationRequested();

        var content = Encoding.UTF8.GetString(document.Content);

        var index = parameters.DocumentIndexBuilder
            .AddFields(Field.CreateMainContentField(content))
            .AddFields(Field.CreateTitleField("Example document"))
            .Build(new ContentType("text/plain"));

        return Task.FromResult<DocumentIndex?>(index);
    }

    public void Dispose()
    {
    }

    public ValueTask DisposeAsync() => ValueTask.CompletedTask;
}