using EnvelopeGenerator.API.Extensions;
using EnvelopeGenerator.Application.Common.Dto;
using EnvelopeGenerator.Application.Common.Extensions;
using EnvelopeGenerator.Application.Documents.Queries;
using EnvelopeGenerator.Domain.Constants;
using MediatR;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;

namespace EnvelopeGenerator.API.Controllers;

/// <summary>
/// 
/// </summary>
[Authorize(Policy = AuthPolicy.Receiver)]
[ApiController]
[Route("api/[controller]")]
public class SignatureController : ControllerBase
{
    private readonly IMediator _mediator;

    /// <summary>
    /// Initializes a new instance of <see cref="SignatureController"/>.
    /// </summary>
    public SignatureController(IMediator mediator)
    {
        _mediator = mediator;
    }

    //TODO: update to use signature query
    /// <summary>
    /// 
    /// </summary>
    /// <param name="envelopeKey"></param>
    /// <param name="cancel"></param>
    /// <returns></returns>
    [Authorize(Policy = AuthPolicy.Receiver)]
    [HttpGet("{envelopeKey}")]
    public async Task<IActionResult> GetAnnotsOfReceiver(string envelopeKey, CancellationToken cancel)
    {
        int envelopeId = User.GetEnvelopeIdOfReceiver();

        int receiverId = User.GetReceiverIdOfReceiver();

        var doc = await _mediator.Send(new ReadDocumentQuery() { EnvelopeId = envelopeId }, cancel);

        if (doc.Elements is not IEnumerable<SignatureDto> docSignatures)
            return NotFound("Document is empty.");

        var rcvSignatures = docSignatures.Where(s => s.ReceiverId == receiverId).ToList();

        if (rcvSignatures is null)
            return NotFound("No signatures found for the current receiver.");
        else
            return Ok(rcvSignatures);
    }
}