using ErrorOr;
using Mediator;
using Musify.Application.Configuration;
using Musify.Application.Services;
using Musify.Application.Tracks.Responses;
using Musify.Domain.ValueObjects;

namespace Musify.Application.Tracks;

public record RequestTrackUploadUrlsCommand(
    long UserId,
    string PictureFileType,
    string PictureContentType,
    string AudioFileType,
    string AudioContentType,
    long? ExpectedPictureSizeBytes = null,
    long? ExpectedAudioSizeBytes = null)
    : ICommand<ErrorOr<TrackUploadUrlsResponse>>;

public class RequestTrackUploadUrlsCommandHandler(
    UploadIntentIssuer issuer,
    ApplicationStorageConfiguration storageConfiguration,
    TrackConfiguration trackConfiguration,
    UploadIntentConfiguration uploadIntentConfiguration)
    : ICommandHandler<RequestTrackUploadUrlsCommand, ErrorOr<TrackUploadUrlsResponse>>
{
    public async ValueTask<ErrorOr<TrackUploadUrlsResponse>> Handle(RequestTrackUploadUrlsCommand request, CancellationToken cancellationToken)
    {
        var routes = trackConfiguration.Routes;
        var issued = await issuer.IssueAsync(
            request.UserId,
            [
                new UploadRequest(UploadIntentPurpose.TrackPicture, routes, request.PictureFileType, request.PictureContentType, request.ExpectedPictureSizeBytes),
                new UploadRequest(UploadIntentPurpose.TrackAudio, routes, request.AudioFileType, request.AudioContentType, request.ExpectedAudioSizeBytes)
            ],
            cancellationToken);
        if (issued.IsError)
            return issued.Errors;

        var picture = issued.Value[0];
        var audio = issued.Value[1];

        return new TrackUploadUrlsResponse(
            picture.IntentId,
            audio.IntentId,
            storageConfiguration.Bucket,
            picture.Key,
            picture.ObjectName,
            picture.ContentType,
            picture.UploadUrl,
            audio.Key,
            audio.ObjectName,
            audio.ContentType,
            audio.UploadUrl,
            uploadIntentConfiguration.UploadUrlExpiresInSeconds);
    }
}