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

namespace EnvelopeGenerator.Web.Controllers
{
    public class DocumentController : BaseController
    {
        private readonly EnvelopeService envelopeService;

        public DocumentController(DatabaseService database, LoggingService logging, EnvelopeService envelope) : base(database, logging)
        {
            envelopeService = envelope;
        }

        [HttpGet]
        [Route("api/document/{envelopeKey}")]
        public async Task<IActionResult> Get(string envelopeKey)
        {
            try
            {
                logger.Info("DocumentController/Get");

                // Validate Envelope Key and load envelope
                envelopeService.EnsureValidEnvelopeKey(envelopeKey);
                EnvelopeResponse response = envelopeService.LoadEnvelope(envelopeKey);

                // Load document info
                var Request = ControllerContext.HttpContext.Request;
                var document = envelopeService.GetDocument(Request, 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 e)
            {
                return ErrorResponse(e);
            }
        }

        [HttpPost]
        [Route("api/document/{envelopeKey}")]
        public async Task<IActionResult> Update(string envelopeKey)
        {
            try
            {
                logger.Info("DocumentController/Update");

                // Validate Envelope Key and load envelope
                envelopeService.EnsureValidEnvelopeKey(envelopeKey);
                EnvelopeResponse response = envelopeService.LoadEnvelope(envelopeKey);

                // Load Document info
                var Request = ControllerContext.HttpContext.Request;
                var document = envelopeService.GetDocument(Request, envelopeKey);

                // Update the document with new data
                await envelopeService.UpdateDocument(Request.Body, document.Filepath);

                // Add history entry 
                envelopeService.InsertHistoryEntrySigned(response);

                return Ok();
            }
            catch (Exception e)
            {
                return ErrorResponse(e);
            }
        }
    }
}