import _ from 'lodash-es';
import { ImageViewModel } from '../models/image';
import { ImageDetailsViewModel } from '../models/imageDetails';
import { ImageLayerViewModel } from '../models/imageLayer';

angular.module('portainer.docker').factory('ImageService', [
  '$q',
  'Image',
  'ImageHelper',
  'RegistryService',
  'HttpRequestHelper',
  'ContainerService',
  'FileUploadService',
  function ImageServiceFactory($q, Image, ImageHelper, RegistryService, HttpRequestHelper, ContainerService, FileUploadService) {
    'use strict';
    var service = {};

    service.image = function (imageId) {
      var deferred = $q.defer();
      Image.get({ id: imageId })
        .$promise.then(function success(data) {
          if (data.message) {
            deferred.reject({ msg: data.message });
          } else {
            var image = new ImageDetailsViewModel(data);
            deferred.resolve(image);
          }
        })
        .catch(function error(err) {
          deferred.reject({ msg: 'Unable to retrieve image details', err: err });
        });
      return deferred.promise;
    };

    service.images = function (withUsage) {
      var deferred = $q.defer();

      $q.all({
        containers: withUsage ? ContainerService.containers(1) : [],
        images: Image.query({}).$promise,
      })
        .then(function success(data) {
          var containers = data.containers;

          var images = data.images.map(function (item) {
            item.ContainerCount = 0;
            for (var i = 0; i < containers.length; i++) {
              var container = containers[i];
              if (container.ImageID === item.Id) {
                item.ContainerCount++;
              }
            }
            return new ImageViewModel(item);
          });

          deferred.resolve(images);
        })
        .catch(function error(err) {
          deferred.reject({ msg: 'Unable to retrieve images', err: err });
        });
      return deferred.promise;
    };

    service.history = function (imageId) {
      var deferred = $q.defer();
      Image.history({ id: imageId })
        .$promise.then(function success(data) {
          if (data.message) {
            deferred.reject({ msg: data.message });
          } else {
            var layers = [];
            var order = data.length;
            angular.forEach(data, function (imageLayer) {
              layers.push(new ImageLayerViewModel(order, imageLayer));
              order--;
            });
            deferred.resolve(layers);
          }
        })
        .catch(function error(err) {
          deferred.reject({ msg: 'Unable to retrieve image details', err: err });
        });
      return deferred.promise;
    };

    service.pushImage = pushImage;
    /**
     *
     * @param {PorImageRegistryModel} registryModel
     */
    function pushImage(registryModel) {
      var deferred = $q.defer();

      var authenticationDetails = registryModel.Registry.Authentication ? RegistryService.encodedCredentials(registryModel.Registry) : '';
      HttpRequestHelper.setRegistryAuthenticationHeader(authenticationDetails);

      const imageConfiguration = ImageHelper.createImageConfigForContainer(registryModel);

      Image.push({ imageName: imageConfiguration.fromImage })
        .$promise.then(function success(data) {
          if (data[data.length - 1].error) {
            deferred.reject({ msg: data[data.length - 1].error });
          } else {
            deferred.resolve();
          }
        })
        .catch(function error(err) {
          deferred.reject({ msg: 'Unable to push image tag', err: err });
        });
      return deferred.promise;
    }

    /**
     * PULL IMAGE
     */

    function pullImageAndIgnoreErrors(imageConfiguration) {
      var deferred = $q.defer();

      Image.create({}, imageConfiguration)
        .$promise.catch(() => {
          // left empty to ignore errors
        })
        .finally(function final() {
          deferred.resolve();
        });

      return deferred.promise;
    }

    function pullImageAndAcknowledgeErrors(imageConfiguration) {
      var deferred = $q.defer();

      Image.create({}, imageConfiguration)
        .$promise.then(function success(data) {
          var err = data.length > 0 && data[data.length - 1].hasOwnProperty('message');
          if (err) {
            var detail = data[data.length - 1];
            deferred.reject({ msg: detail.message });
          } else {
            deferred.resolve(data);
          }
        })
        .catch(function error(err) {
          deferred.reject({ msg: 'Unable to pull image', err: err });
        });

      return deferred.promise;
    }

    service.pullImage = pullImage;

    /**
     *
     * @param {PorImageRegistryModel} registry
     * @param {bool} ignoreErrors
     */
    function pullImage(registry, ignoreErrors) {
      var authenticationDetails = registry.Registry.Authentication ? RegistryService.encodedCredentials(registry.Registry) : '';
      HttpRequestHelper.setRegistryAuthenticationHeader(authenticationDetails);

      var imageConfiguration = ImageHelper.createImageConfigForContainer(registry);

      if (ignoreErrors) {
        return pullImageAndIgnoreErrors(imageConfiguration);
      }
      return pullImageAndAcknowledgeErrors(imageConfiguration);
    }

    /**
     * ! PULL IMAGE
     */

    service.tagImage = function (id, image) {
      return Image.tag({ id: id, repo: image }).$promise;
    };

    service.downloadImages = function (images) {
      var names = ImageHelper.getImagesNamesForDownload(images);
      return Image.download(names).$promise;
    };

    service.uploadImage = function (file) {
      return FileUploadService.loadImages(file);
    };

    service.deleteImage = function (id, forceRemoval) {
      var deferred = $q.defer();
      Image.remove({ id: id, force: forceRemoval })
        .$promise.then(function success(data) {
          if (data[0].message) {
            deferred.reject({ msg: data[0].message });
          } else {
            deferred.resolve();
          }
        })
        .catch(function error(err) {
          deferred.reject({ msg: 'Unable to remove image', err: err });
        });
      return deferred.promise;
    };

    service.getUniqueTagListFromImages = function (availableImages) {
      return _.uniq(
        _.flatMap(availableImages, function (image) {
          _.remove(image.RepoTags, function (item) {
            return item.indexOf('<none>') !== -1;
          });
          return image.RepoTags ? _.uniqWith(image.RepoTags, _.isEqual) : [];
        })
      );
    };

    return service;
  },
]);