forked from JZO001/Forge.OpenAI
/
ImageService.cs
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/
ImageService.cs
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using Forge.OpenAI.Interfaces.Infrastructure;
using Forge.OpenAI.Interfaces.Providers;
using Forge.OpenAI.Interfaces.Services;
using Forge.OpenAI.Models.Common;
using Forge.OpenAI.Models.Images;
using Forge.OpenAI.Settings;
using Microsoft.Extensions.Options;
using System;
using System.IO;
using System.Net.Http;
using System.Threading;
using System.Threading.Tasks;
namespace Forge.OpenAI.Services
{
/// <summary>Represents the image service</summary>
public class ImageService : IImageService
{
private readonly OpenAIOptions _options;
private readonly IApiHttpService _apiHttpService;
private readonly IProviderEndpointService _providerEndpointService;
/// <summary>Initializes a new instance of the <see cref="ImageService" /> class.</summary>
/// <param name="options">The options.</param>
/// <param name="apiHttpService">The API communication service.</param>
/// <param name="providerEndpointService">The provider endpoint service.</param>
/// <exception cref="System.ArgumentNullException">options
/// or
/// apiCommunicationService</exception>
public ImageService(OpenAIOptions options, IApiHttpService apiHttpService, IProviderEndpointService providerEndpointService)
{
if (options == null) throw new ArgumentNullException(nameof(options));
if (apiHttpService == null) throw new ArgumentNullException(nameof(apiHttpService));
_options = options;
_apiHttpService = apiHttpService;
_providerEndpointService = providerEndpointService;
}
/// <summary>Initializes a new instance of the <see cref="ImageService" /> class.</summary>
/// <param name="options">The options.</param>
/// <param name="apiHttpService">The API communication service.</param>
/// <param name="providerEndpointService">The provider endpoint service.</param>
public ImageService(IOptions<OpenAIOptions> options, IApiHttpService apiHttpService, IProviderEndpointService providerEndpointService)
: this(options?.Value, apiHttpService, providerEndpointService)
{
}
/// <summary>Creates new image(s) asynchronously</summary>
/// <param name="imageCreateRequest">The image create request.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>
/// ImageCreateResponse
/// </returns>
public async Task<HttpOperationResult<ImageCreateResponse>> CreateImageAsync(ImageCreateRequest imageCreateRequest, CancellationToken cancellationToken = default)
{
var validationResult = imageCreateRequest.Validate<ImageCreateResponse>();
if (validationResult != null) return validationResult;
return await _apiHttpService.PostAsync<ImageCreateRequest, ImageCreateResponse>(GetCreateUri(), imageCreateRequest, null, cancellationToken).ConfigureAwait(false);
}
/// <summary>Edits an image asynchronously</summary>
/// <param name="imageEditRequest">The image edit request.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>
/// ImageEditResponse
/// </returns>
public async Task<HttpOperationResult<ImageEditResponse>> EditImageAsync(ImageEditRequest imageEditRequest, CancellationToken cancellationToken = default)
{
var validationResult = imageEditRequest.Validate<ImageEditResponse>();
if (validationResult != null) return validationResult;
return await _apiHttpService.PostAsync<ImageEditRequest, ImageEditResponse>(GetEditUri(), imageEditRequest, ImageEditHttpContentFactoryAsync, cancellationToken).ConfigureAwait(false);
}
/// <summary>Variates an image asynchronously</summary>
/// <param name="imageVariationRequest">The image variation request.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>
/// ImageVariationResponse
/// </returns>
public async Task<HttpOperationResult<ImageVariationResponse>> VariateImageAsync(ImageVariationRequest imageVariationRequest, CancellationToken cancellationToken = default)
{
var validationResult = imageVariationRequest.Validate<ImageVariationResponse>();
if (validationResult != null) return validationResult;
return await _apiHttpService.PostAsync<ImageVariationRequest, ImageVariationResponse>(GetVariationUri(), imageVariationRequest, ImageVariationHttpContentFactoryAsync, cancellationToken).ConfigureAwait(false);
}
private string GetCreateUri()
{
return string.Format(_providerEndpointService.BuildBaseUri(), _options.ImageCreateUri);
}
private string GetEditUri()
{
return string.Format(_providerEndpointService.BuildBaseUri(), _options.ImageEditUri);
}
private string GetVariationUri()
{
return string.Format(_providerEndpointService.BuildBaseUri(), _options.ImageVariationUri);
}
private async Task<HttpContent> ImageEditHttpContentFactoryAsync(ImageEditRequest imageEditRequest, CancellationToken cancellationToken)
{
if (string.IsNullOrWhiteSpace(imageEditRequest.Prompt)) throw new InvalidOperationException("Missing prompt data");
if (imageEditRequest.Image == null) throw new InvalidOperationException("Missing image content data");
if (imageEditRequest.Image.SourceContent == null && imageEditRequest.Image.SourceStream == null) throw new InvalidOperationException("No image content nor image stream defined in image content data.");
if (string.IsNullOrWhiteSpace(imageEditRequest.Image.ContentName)) throw new InvalidOperationException("Missing image name in image content data");
if (imageEditRequest.Mask != null)
{
if (imageEditRequest.Mask.SourceContent == null && imageEditRequest.Mask.SourceStream == null) throw new InvalidOperationException("No image content nor image stream defined in mask content data.");
if (string.IsNullOrWhiteSpace(imageEditRequest.Mask.ContentName)) throw new InvalidOperationException("Missing image name in mask content data");
}
MultipartFormDataContent content = new MultipartFormDataContent();
// add image content
if (imageEditRequest.Image.SourceContent != null)
{
content.Add(new ByteArrayContent(imageEditRequest.Image.SourceContent), "image", imageEditRequest.Image.ContentName);
}
else
{
using (MemoryStream imageData = new MemoryStream())
{
await imageEditRequest.Image.SourceStream.CopyToAsync(imageData, 81920, cancellationToken).ConfigureAwait(false);
content.Add(new ByteArrayContent(imageData.ToArray()), "image", imageEditRequest.Image.ContentName);
imageData.SetLength(0);
}
}
if (imageEditRequest.Mask != null)
{
// add mask content
if (imageEditRequest.Mask.SourceContent != null)
{
content.Add(new ByteArrayContent(imageEditRequest.Mask.SourceContent), "mask", imageEditRequest.Mask.ContentName);
}
else
{
using (MemoryStream maskImageData = new MemoryStream())
{
await imageEditRequest.Mask.SourceStream.CopyToAsync(maskImageData, 81920, cancellationToken).ConfigureAwait(false);
content.Add(new ByteArrayContent(maskImageData.ToArray()), "mask", imageEditRequest.Mask.ContentName);
maskImageData.SetLength(0);
}
}
}
content.Add(new StringContent(imageEditRequest.Prompt), "prompt");
content.Add(new StringContent(imageEditRequest.NumberOfEditedImages.ToString()), "n");
if (!string.IsNullOrWhiteSpace(imageEditRequest.Size)) content.Add(new StringContent(imageEditRequest.Size), "size");
if (!string.IsNullOrWhiteSpace(imageEditRequest.ResponseFormat)) content.Add(new StringContent(imageEditRequest.ResponseFormat), "response_format");
if (!string.IsNullOrWhiteSpace(imageEditRequest.User)) content.Add(new StringContent(imageEditRequest.User), "user");
return content;
}
private async Task<HttpContent> ImageVariationHttpContentFactoryAsync(ImageVariationRequest imageVariationRequest, CancellationToken cancellationToken)
{
if (imageVariationRequest.Image == null) throw new InvalidOperationException("Missing image content data");
if (imageVariationRequest.Image.SourceContent == null && imageVariationRequest.Image.SourceStream == null) throw new InvalidOperationException("No image content nor image stream defined in image content data.");
if (string.IsNullOrWhiteSpace(imageVariationRequest.Image.ContentName)) throw new InvalidOperationException("Missing image name in image content data");
MultipartFormDataContent content = new MultipartFormDataContent();
// add image content
if (imageVariationRequest.Image.SourceContent != null)
{
content.Add(new ByteArrayContent(imageVariationRequest.Image.SourceContent), "image", imageVariationRequest.Image.ContentName);
}
else
{
using (MemoryStream imageData = new MemoryStream())
{
await imageVariationRequest.Image.SourceStream.CopyToAsync(imageData, 81920, cancellationToken).ConfigureAwait(false);
content.Add(new ByteArrayContent(imageData.ToArray()), "image", imageVariationRequest.Image.ContentName);
imageData.SetLength(0);
}
}
content.Add(new StringContent(imageVariationRequest.NumberOfVariationImages.ToString()), "n");
if (!string.IsNullOrWhiteSpace(imageVariationRequest.Size)) content.Add(new StringContent(imageVariationRequest.Size), "size");
if (!string.IsNullOrWhiteSpace(imageVariationRequest.ResponseFormat)) content.Add(new StringContent(imageVariationRequest.Size), "response_format");
if (!string.IsNullOrWhiteSpace(imageVariationRequest.User)) content.Add(new StringContent(imageVariationRequest.User), "user");
return content;
}
}
}