import { TypeKind } from 'graphql';
import {
  GET_LIST,
  GET_MANY,
  GET_MANY_REFERENCE,
  CREATE,
  UPDATE,
  DELETE
} from 'react-admin';
import getResponseParser from './getResponseParser';
import { IntrospectionResult, Resource } from './constants/interfaces';

const testListTypes = (type: string) => {
  it('returns the response expected by RA for GET_LIST', () => {
    const resource = {
      type: {
        name: 'Post',
        fields: [
          {
            name: 'id',
            type: {
              kind: TypeKind.NON_NULL,
              ofType: { kind: TypeKind.SCALAR }
            }
          },
          {
            name: 'title',
            type: {
              kind: TypeKind.NON_NULL,
              ofType: { kind: TypeKind.SCALAR }
            }
          },
          {
            name: 'tags',
            type: {
              kind: TypeKind.LIST,
              ofType: { kind: TypeKind.OBJECT, name: 'Tag' }
            }
          },
          { name: 'embeddedJson', type: { kind: TypeKind.OBJECT } },
          {
            name: 'author',
            type: {
              kind: TypeKind.NON_NULL,
              ofType: { kind: TypeKind.OBJECT, name: 'User' }
            }
          },
          {
            name: 'coauthor',
            type: { kind: TypeKind.OBJECT, name: 'User' }
          }
        ]
      }
    };

    const introspectionResults = {
      resources: [
        {
          type: {
            name: 'User',
            fields: [
              { name: 'id', type: { kind: TypeKind.SCALAR } },
              {
                name: 'firstName',
                type: { kind: TypeKind.SCALAR }
              }
            ]
          }
        },
        {
          type: {
            name: 'Tag',
            fields: [
              { name: 'id', type: { kind: TypeKind.SCALAR } },
              { name: 'name', type: { kind: TypeKind.SCALAR } }
            ]
          }
        }
      ],
      types: [{ name: 'User' }, { name: 'Tag' }]
    };
    const response = {
      data: {
        items: [
          {
            _typeName: 'Post',
            id: 'post1',
            title: 'title1',
            author: { id: 'author1', firstName: 'Toto' },
            coauthor: null,
            tags: [
              { id: 'tag1', name: 'tag1 name' },
              { id: 'tag2', name: 'tag2 name' }
            ],
            embeddedJson: { foo: 'bar' }
          },
          {
            _typeName: 'Post',
            id: 'post2',
            title: 'title2',
            author: { id: 'author1', firstName: 'Toto' },
            coauthor: null,
            tags: [
              { id: 'tag1', name: 'tag1 name' },
              { id: 'tag3', name: 'tag3 name' }
            ],
            embeddedJson: { foo: 'bar' }
          }
        ],
        total: { aggregate: { count: 100 } }
      }
    };

    expect(
      getResponseParser(introspectionResults as IntrospectionResult)(
        type,
        resource as Resource
      )(response)
    ).toEqual({
      data: [
        {
          id: 'post1',
          title: 'title1',
          'author.id': 'author1',
          author: { id: 'author1', firstName: 'Toto' },
          tags: [
            { id: 'tag1', name: 'tag1 name' },
            { id: 'tag2', name: 'tag2 name' }
          ],
          tagsIds: ['tag1', 'tag2'],
          embeddedJson: { foo: 'bar' }
        },
        {
          id: 'post2',
          title: 'title2',
          'author.id': 'author1',
          author: { id: 'author1', firstName: 'Toto' },
          tags: [
            { id: 'tag1', name: 'tag1 name' },
            { id: 'tag3', name: 'tag3 name' }
          ],
          tagsIds: ['tag1', 'tag3'],
          embeddedJson: { foo: 'bar' }
        }
      ],
      total: 100
    });
  });
};

const testSingleTypes = (type: string) => {
  it('returns the response expected by RA for GET_LIST', () => {
    const resource = {
      type: {
        name: 'Post',
        fields: [
          {
            name: 'id',
            type: {
              kind: TypeKind.NON_NULL,
              ofType: { kind: TypeKind.SCALAR }
            }
          },
          {
            name: 'title',
            type: {
              kind: TypeKind.NON_NULL,
              ofType: { kind: TypeKind.SCALAR }
            }
          },
          {
            name: 'tags',
            type: {
              kind: TypeKind.LIST,
              ofType: { kind: TypeKind.OBJECT, name: 'Tag' }
            }
          },
          { name: 'embeddedJson', type: { kind: TypeKind.OBJECT } },
          {
            name: 'author',
            type: {
              kind: TypeKind.NON_NULL,
              ofType: { kind: TypeKind.OBJECT, name: 'User' }
            }
          },
          {
            name: 'coauthor',
            type: { kind: TypeKind.OBJECT, name: 'User' }
          }
        ]
      }
    };

    const introspectionResults = {
      resources: [
        {
          type: {
            name: 'User',
            fields: [
              { name: 'id', type: { kind: TypeKind.SCALAR } },
              {
                name: 'firstName',
                type: { kind: TypeKind.SCALAR }
              }
            ]
          }
        },
        {
          type: {
            name: 'Tag',
            fields: [
              { name: 'id', type: { kind: TypeKind.SCALAR } },
              { name: 'name', type: { kind: TypeKind.SCALAR } }
            ]
          }
        }
      ],
      types: [{ name: 'User' }, { name: 'Tag' }]
    };
    const response = {
      data: {
        data: {
          _typeName: 'Post',
          id: 'post1',
          title: 'title1',
          author: { id: 'author1', firstName: 'Toto' },
          coauthor: null,
          tags: [
            { id: 'tag1', name: 'tag1 name' },
            { id: 'tag2', name: 'tag2 name' }
          ],
          embeddedJson: { foo: 'bar' }
        }
      }
    };
    expect(
      getResponseParser(introspectionResults as IntrospectionResult)(
        type,
        resource as Resource
      )(response)
    ).toEqual({
      data: {
        id: 'post1',
        title: 'title1',
        'author.id': 'author1',
        author: { id: 'author1', firstName: 'Toto' },
        tags: [
          { id: 'tag1', name: 'tag1 name' },
          { id: 'tag2', name: 'tag2 name' }
        ],
        tagsIds: ['tag1', 'tag2'],
        embeddedJson: { foo: 'bar' }
      }
    });
  });
};

describe('getResponseParser', () => {
  testListTypes(GET_LIST);
  testListTypes(GET_MANY);
  testListTypes(GET_MANY_REFERENCE);
  testSingleTypes(CREATE);
  testSingleTypes(UPDATE);
  testSingleTypes(DELETE);
});