using DocumentService.Client.Interfaces;
using DocumentService.Client.Models.Requests;
using Microsoft.Extensions.Logging;
using System.Net.Http;

namespace DocumentService.Client.Clients;

/// <summary>
/// Implementation of PDF validation client.
/// </summary>
public class PdfValidationClient(HttpClient httpClient, ILogger<PdfValidationClient> logger) : BaseDocumentClient(httpClient, logger), IPdfValidationClient
{
    /// <inheritdoc />
    public async Task<PdfValidationResult> ValidatePdfAsync(Stream pdfStream, CancellationToken cancellationToken = default)
    {
        var result = await SendMultipartAsync<PdfValidationResult>(
            "/api/pdf/validation/validate",
            pdfStream,
            "document.pdf",
            cancellationToken);

        return result ?? throw new InvalidOperationException("API returned null response");
    }

    /// <inheritdoc />
    public async Task<PdfValidationResult> ValidatePdfAsync(byte[] pdfBytes, CancellationToken cancellationToken = default)
    {
        var request = new ValidatePdfBase64Request
        {
            Base64Pdf = ToBase64(pdfBytes)
        };

        var result = await SendJsonAsync<ValidatePdfBase64Request, PdfValidationResult>(
            "/api/pdf/validation/validate",
            request,
            cancellationToken);

        return result ?? throw new InvalidOperationException("API returned null response");
    }

    /// <inheritdoc />
    public async Task<PdfAValidationResult> ValidatePdfAAsync(Stream pdfStream, CancellationToken cancellationToken = default)
    {
        var result = await SendMultipartAsync<PdfAValidationResult>(
            "/api/pdf/validation/validate-pdfa",
            pdfStream,
            "document.pdf",
            cancellationToken);

        return result ?? throw new InvalidOperationException("API returned null response");
    }

    /// <inheritdoc />
    public async Task<PdfAValidationResult> ValidatePdfAAsync(byte[] pdfBytes, CancellationToken cancellationToken = default)
    {
        var request = new ValidatePdfABase64Request
        {
            Base64Pdf = ToBase64(pdfBytes)
        };

        var result = await SendJsonAsync<ValidatePdfABase64Request, PdfAValidationResult>(
            "/api/pdf/validation/validate-pdfa",
            request,
            cancellationToken);

        return result ?? throw new InvalidOperationException("API returned null response");
    }
}