using EnvelopeGenerator.Application.Common.Dto;
using EnvelopeGenerator.Application.Common.Dto.EnvelopeReceiver;
using EnvelopeGenerator.Application.Common.Extensions;
using EnvelopeGenerator.Application.Common.Notifications.RemoveSignature;
using EnvelopeGenerator.Domain.Constants;
using MediatR;
using System.Dynamic;

namespace EnvelopeGenerator.Application.Common.Notifications.DocSigned;

/// <summary>
/// 
/// </summary>
/// <param name="Instant"></param>
/// <param name="Structured"></param>
public record PsPdfKitAnnotation(ExpandoObject Instant, IEnumerable<AnnotationCreateDto> Structured);

/// <summary>
/// 
/// </summary>
/// <param name="Original"></param>
public record DocSignedNotification(EnvelopeReceiverDto Original) : EnvelopeReceiverDto(Original), INotification, ISendMailNotification
{
    /// <summary>
    /// 
    /// </summary>
    public PsPdfKitAnnotation PsPdfKitAnnotation { get; init; } = null!;

    /// <summary>
    /// 
    /// </summary>
    public EmailTemplateType TemplateType => EmailTemplateType.DocumentSigned;

    /// <summary>
    /// 
    /// </summary>
    public string EmailAddress => Receiver?.EmailAddress
        ?? throw new InvalidOperationException($"Receiver is null." +
            $"DocSignedNotification:\n{this.ToJson(Format.Json.ForDiagnostics)}");
}

/// <summary>
/// 
/// </summary>
public static class DocSignedNotificationExtensions
{
    /// <summary>
    /// Converts an <see cref="EnvelopeReceiverDto"/> to a <see cref="DocSignedNotification"/>.
    /// </summary>
    /// <param name="dto">The DTO to convert.</param>
    /// <param name="psPdfKitAnnotation"></param>
    /// <returns>A new <see cref="DocSignedNotification"/> instance.</returns>
    public static DocSignedNotification ToDocSignedNotification(this EnvelopeReceiverDto dto, PsPdfKitAnnotation psPdfKitAnnotation)
        => new(dto) { PsPdfKitAnnotation = psPdfKitAnnotation };

    /// <summary>
    /// 
    /// </summary>
    /// <param name="dtoTask"></param>
    /// <param name="psPdfKitAnnotation"></param>
    /// <returns></returns>
    public static async Task<DocSignedNotification?> ToDocSignedNotification(this Task<EnvelopeReceiverDto?> dtoTask, PsPdfKitAnnotation psPdfKitAnnotation)
        => await dtoTask is EnvelopeReceiverDto dto ? new(dto) { PsPdfKitAnnotation = psPdfKitAnnotation } : null;

    /// <summary>
    /// 
    /// </summary>
    /// <param name="publisher"></param>
    /// <param name="notification"></param>
    /// <param name="cancel"></param>
    /// <returns></returns>
    public static async Task PublishSafely(this IPublisher publisher, DocSignedNotification notification, CancellationToken cancel = default)
    {
        try
        {
            await publisher.Publish(notification, cancel);
        }
        catch (Exception)
        {
            await publisher.Publish(new RemoveSignatureNotification()
            {
                EnvelopeId = notification.EnvelopeId,
                ReceiverId = notification.ReceiverId
            }, cancel);
            throw;
        }
    }
}