using Azure;
using Azure.AI.Vision.ImageAnalysis;

builder.Services.AddSingleton<ImageAnalysisClient>(sp =>
{
    var endpoint = Environment.GetEnvironmentVariable("AI_ENDPOINT");
    var key = Environment.GetEnvironmentVariable("AI_APIKEY");
    var credential = new AzureKeyCredential(key);
    return new ImageAnalysisClient(new Uri(endpoint), credential);
});

var response = new List<dynamic>();
BinaryData requestData = await BinaryData.FromStreamAsync(req.Body);
ImageAnalysisResult result = _ImageAnalysisClient.Analyze(requestData, VisualFeatures.Read);

foreach (var line in result.Read.Blocks.SelectMany(block => block.Lines))
{
    var lineObject = new
    {
        Text = line.Text,
        BoundingPolygon = line.BoundingPolygon.ToList(),
        Words = line.Words.Select(word => new
        {
            Text = word.Text,
            Confidence = word.Confidence.ToString("#.####"),
            BoundingPolygon = word.BoundingPolygon.ToList()
        }).ToList()
    };
    response.Add(lineObject);
}
return new JsonResult(response);