import {
  CHAPTER_DESCRIPTION_TYPE,
  CHAPTER_TITLE_TYPE,
  CONTENT_TYPE,
  OBJECTIVE_GROUP_TYPE,
  OBJECTIVE_TYPE,
} from '@/consts/types';
import EDIT_CONTENT_BLOCK_MUTATION from '@/graphql/gql/mutations/editContentBlock.gql';
import UPDATE_OBJECTIVE_VISIBILITY_MUTATION from '@/graphql/gql/mutations/updateObjectiveVisibility.gql';
import UPDATE_OBJECTIVE_GROUP_VISIBILITY_MUTATION from '@/graphql/gql/mutations/updateObjectiveGroupVisibility.gql';
import UPDATE_CHAPTER_VISIBILITY_MUTATION from '@/graphql/gql/mutations/updateChapterVisibility.gql';

export const createVisibilityMutation = (type: string, id: string, visibility: string) => {
  let mutation, variables;
  switch (type) {
    case CONTENT_TYPE:
      mutation = EDIT_CONTENT_BLOCK_MUTATION;
      variables = {
        input: {
          id,
          contentBlock: {
            visibility,
          },
        },
      };
      break;
    case OBJECTIVE_TYPE:
      mutation = UPDATE_OBJECTIVE_VISIBILITY_MUTATION;
      variables = {
        input: {
          id,
          visibility,
        },
      };
      break;
    case OBJECTIVE_GROUP_TYPE:
      mutation = UPDATE_OBJECTIVE_GROUP_VISIBILITY_MUTATION;
      variables = {
        input: {
          id,
          visibility,
        },
      };
      break;
    case CHAPTER_TITLE_TYPE:
    case CHAPTER_DESCRIPTION_TYPE:
      mutation = UPDATE_CHAPTER_VISIBILITY_MUTATION;
      variables = {
        input: {
          id,
          type,
          visibility,
        },
      };
      break;
  }

  return {
    mutation,
    variables,
  };
};

const containsClass = (arr: any[] = [], schoolClass: any) => arr.map((entry) => entry.id).includes(schoolClass.id);

export const hidden: (options: {
  type: string;
  block: {
    userCreated: boolean;
    visibleFor: any[];
    hiddenFor: any[];
    titleHiddenFor?: any[];
    descriptionHiddenFor?: any[];
    hidden?: boolean;
  };
  schoolClass: any;
}) => boolean = ({
  type,
  block: { userCreated, visibleFor, hiddenFor, titleHiddenFor, descriptionHiddenFor, hidden },
  schoolClass,
}) => {
  if (hidden === true) {
    return true;
  }
  switch (type) {
    case CONTENT_TYPE:
    case OBJECTIVE_TYPE:
      // is this content block / objective group user created?
      return userCreated
        ? // if so, is visibility not explicitly set for this school class?
          !containsClass(visibleFor, schoolClass)
        : // otherwise, is it explicitly hidden for this school class?
          containsClass(hiddenFor, schoolClass);
    case OBJECTIVE_GROUP_TYPE:
      return containsClass(hiddenFor, schoolClass);
    case CHAPTER_TITLE_TYPE:
      return containsClass(titleHiddenFor, schoolClass);
    case CHAPTER_DESCRIPTION_TYPE:
      return containsClass(descriptionHiddenFor, schoolClass);
    default:
      return false;
  }
};