import _ from 'lodash-es';

import angular from 'angular';
import KubernetesResourcePoolConverter from 'Kubernetes/converters/resourcePool';
import KubernetesResourceQuotaHelper from 'Kubernetes/helpers/resourceQuotaHelper';

/* @ngInject */
export function KubernetesResourcePoolService($async, KubernetesNamespaceService, KubernetesResourceQuotaService, KubernetesIngressService) {
  return {
    get,
    create,
    patch,
    delete: _delete,
  };

  async function getOne(name) {
    try {
      const namespace = await KubernetesNamespaceService.get(name);
      const [quotaAttempt] = await Promise.allSettled([KubernetesResourceQuotaService.get(name, KubernetesResourceQuotaHelper.generateResourceQuotaName(name))]);
      const pool = KubernetesResourcePoolConverter.apiToResourcePool(namespace);
      if (quotaAttempt.status === 'fulfilled') {
        pool.Quota = quotaAttempt.value;
        pool.Yaml += '---\n' + quotaAttempt.value.Yaml;
      }
      return pool;
    } catch (err) {
      throw err;
    }
  }

  async function getAll() {
    try {
      const namespaces = await KubernetesNamespaceService.get();
      const pools = await Promise.all(
        _.map(namespaces, async (namespace) => {
          const name = namespace.Name;
          const [quotaAttempt] = await Promise.allSettled([KubernetesResourceQuotaService.get(name, KubernetesResourceQuotaHelper.generateResourceQuotaName(name))]);
          const pool = KubernetesResourcePoolConverter.apiToResourcePool(namespace);
          if (quotaAttempt.status === 'fulfilled') {
            pool.Quota = quotaAttempt.value;
            pool.Yaml += '---\n' + quotaAttempt.value.Yaml;
          }
          return pool;
        })
      );
      return pools;
    } catch (err) {
      throw err;
    }
  }

  function get(name) {
    if (name) {
      return $async(getOne, name);
    }
    return $async(getAll);
  }

  function create(formValues) {
    return $async(async () => {
      try {
        const [namespace, quota, ingresses] = KubernetesResourcePoolConverter.formValuesToResourcePool(formValues);
        await KubernetesNamespaceService.create(namespace);

        if (quota) {
          await KubernetesResourceQuotaService.create(quota);
        }
        const ingressPromises = _.map(ingresses, (i) => KubernetesIngressService.create(i));
        await Promise.all(ingressPromises);
      } catch (err) {
        throw err;
      }
    });
  }

  function patch(oldFormValues, newFormValues) {
    return $async(async () => {
      try {
        const [oldNamespace, oldQuota, oldIngresses] = KubernetesResourcePoolConverter.formValuesToResourcePool(oldFormValues);
        const [newNamespace, newQuota, newIngresses] = KubernetesResourcePoolConverter.formValuesToResourcePool(newFormValues);
        void oldNamespace, newNamespace;

        if (oldQuota && newQuota) {
          await KubernetesResourceQuotaService.patch(oldQuota, newQuota);
        } else if (!oldQuota && newQuota) {
          await KubernetesResourceQuotaService.create(newQuota);
        } else if (oldQuota && !newQuota) {
          await KubernetesResourceQuotaService.delete(oldQuota);
        }

        const create = _.filter(newIngresses, (ing) => !_.find(oldIngresses, { Name: ing.Name }));
        const del = _.filter(oldIngresses, (ing) => !_.find(newIngresses, { Name: ing.Name }));
        const patch = _.without(newIngresses, ...create);

        const createPromises = _.map(create, (i) => KubernetesIngressService.create(i));
        const delPromises = _.map(del, (i) => KubernetesIngressService.delete(i.Namespace, i.Name));
        const patchPromises = _.map(patch, (ing) => {
          const old = _.find(oldIngresses, { Name: ing.Name });
          ing.Paths = angular.copy(old.Paths);
          ing.PreviousHost = old.Host;
          return KubernetesIngressService.patch(old, ing);
        });

        const promises = _.flatten([createPromises, delPromises, patchPromises]);
        await Promise.all(promises);
      } catch (err) {
        throw err;
      }
    });
  }

  function _delete(pool) {
    return $async(async () => {
      try {
        await KubernetesNamespaceService.delete(pool.Namespace);
      } catch (err) {
        throw err;
      }
    });
  }
}

angular.module('portainer.kubernetes').service('KubernetesResourcePoolService', KubernetesResourcePoolService);