using Microsoft.AspNetCore.Mvc;
using EnvelopeGenerator.Common;
using EnvelopeGenerator.Web.Services;
using EnvelopeGenerator.Application.Contracts;

namespace EnvelopeGenerator.Web.Controllers
{
    public class DocumentController : BaseController
    {
        private readonly EnvelopeService envelopeService;
        private readonly ActionService? actionService;
        private readonly IEnvelopeDocumentService _envDocService;

        public DocumentController(DatabaseService database, EnvelopeService envelope, IEnvelopeDocumentService envDocService, ILogger<DocumentController> logger) : base(database, logger)
        {
            envelopeService = envelope;
            actionService = database.Services?.actionService;
            _envDocService = envDocService;
        }

        [HttpGet]
        [Route("api/document/{envelopeKey}")]
        public async Task<IActionResult> Get([FromRoute] string envelopeKey, [FromQuery] int index)
        {
            try
            {
                // Validate Envelope Key and load envelope
                envelopeService.EnsureValidEnvelopeKey(envelopeKey);
                EnvelopeResponse response = await envelopeService.LoadEnvelope(envelopeKey);

                // Load document info
                var document = await envelopeService.GetDocument(index, envelopeKey);

                // Load the document from disk
                var bytes = await envelopeService.GetDocumentContents(document);

                // Return the document as bytes
                return File(bytes, "application/octet-stream");
            }
            catch(Exception ex)
            {
                return ErrorResponse(ex);
            }
        }

        [HttpPost]
        [Route("api/document/{envelopeKey}")]
        public async Task<IActionResult> Open(string envelopeKey)
        {
            try
            {
                // Validate Envelope Key and load envelope
                envelopeService.EnsureValidEnvelopeKey(envelopeKey);
                EnvelopeResponse response = await envelopeService.LoadEnvelope(envelopeKey);

                actionService?.OpenEnvelope(response.Envelope, response.Receiver);

                return Ok(new object());
            }
            catch(Exception ex)
            {
                return ErrorResponse(ex);
            }
        }

    }
}