using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;

using DomainResults.Common;
using DomainResults.Mvc;

using DataProviders.Buckets;
using WeatherForecast.Services;
using WeatherForecast.Models.Template.Requests;
using Core.Binders;
using Core.Enumerations;
using DomainObjects.Documents.Users;
using WeatherForecast.Policies;

namespace WeatherForecast.Controllers;

/// <summary>
/// 
/// </summary>
[AllowAnonymous]
[Route("api/[controller]")]
public class TemplateController : ControllerBase {


  private readonly IAuthorizationService _authorizationService;
  private readonly ITemplateBucketDataProvider _templateBucketDataProvider;
  private readonly ITemplateService _templateService;

  /// <summary>
  /// 
  /// </summary>
  /// <param name="authorizationService"></param>
  /// <param name="templateBucketDataProvider"></param>
  /// <param name="templateService"></param>
  public TemplateController(
    IAuthorizationService authorizationService,
    ITemplateBucketDataProvider templateBucketDataProvider,
    ITemplateService templateService
  ) {
    _authorizationService = authorizationService;
    _templateBucketDataProvider = templateBucketDataProvider;
    _templateService = templateService;
  }

  /// <summary>
  /// Allows to upload private dkim certificate
  /// </summary>
  /// <param name="siteId"></param>
  /// <param name="requestData"></param>
  /// <param name="formFile"></param>
  /// <returns></returns>
  [HttpPost("{siteId}")]
  public async Task<IActionResult> Post([FromRoute] Guid siteId, [ModelBinder(typeof(JsonModelBinder<PostTemplateRequestModel>))] PostTemplateRequestModel? requestData, IFormFile formFile) {

    if (!(formFile.Length > 0))
      return IDomainResult.Failed().ToActionResult();

    using var ms = new MemoryStream();
    formFile.CopyTo(ms);

    var newFile = new BucketFile(siteId, formFile.FileName, ms.ToArray(), formFile.ContentType);

    var authorizationResult = await _authorizationService.AuthorizeAsync(User, new List<BucketFile> { newFile }, new TemplateAuthorisationRequirement {
      Action = CrudActions.Create,
      Roles = new List<TemplateRole> {
        new TemplateRole { Role = Roles.Admin }
      }
    });

    if (authorizationResult.Succeeded) {
      var result = _templateService.Post(newFile);
      return result.ToActionResult();
    }

    return Unauthorized();
  }

  /// <summary>
  /// 
  /// </summary>
  /// <param name="siteId"></param>
  /// <param name="fileId"></param>
  /// <returns></returns>
  [HttpGet("{siteId}/{fileId}")]
  public async Task<IActionResult> Get([FromRoute] Guid siteId, [FromRoute] Guid fileId) {

    var (file, result) = _templateBucketDataProvider.Download(siteId, fileId);
    if (!result.IsSuccess || file == null)
      return result.ToActionResult();

    var authorizationResult = await _authorizationService.AuthorizeAsync(User, new List<BucketFile> { file }, new TemplateAuthorisationRequirement {
      Action = CrudActions.Read,
      Roles = new List<TemplateRole> {
        new TemplateRole { Role = Roles.Admin }
      }
    });

    if (authorizationResult.Succeeded) {
      var stream = new MemoryStream(file.Bytes);
      return new FileStreamResult(stream, file.ContentType) {
        FileDownloadName = file.Name
      };
    }

    return Unauthorized();
  }

  /// <summary>
  /// 
  /// </summary>
  /// <param name="siteId"></param>
  /// <param name="fileId"></param>
  /// <param name="requestData"></param>
  /// <param name="file"></param>
  /// <returns></returns>
  [HttpGet("{siteId}/{fileId}")]
  public IActionResult Put([FromRoute] Guid siteId, [FromRoute] Guid fileId, [ModelBinder(typeof(JsonModelBinder<PutTemplateRequestModel>))] PutTemplateRequestModel requestData, IFormFile file) {
    return BadRequest();
  }


  /// <summary>
  /// Delete template
  /// </summary>
  /// <param name="siteId"></param>
  /// <param name="fileId"></param>
  /// <returns></returns>
  [HttpDelete("{siteId}/{fileId}")]
  public IActionResult Delete([FromRoute] Guid siteId, [FromRoute] Guid fileId) {

    var result = _templateService.Delete(siteId, fileId);
    return result.ToActionResult();
  }
}