import ava, { TestInterface } from 'ava';
import { Mongoose, Types } from 'mongoose';

import { Factory } from '../../../database/factory';
import * as testUtils from '../../../test/utils';
import { User, UserProps } from '../user-model';
import { Recipe } from '../../recipe';
import { createContext } from '../../../test/utils/create-mock-context';
import { gqlCall } from '../../../test/utils/gqlCall';
import { defineUserAbility } from '../../../server/authorization/user-authorization';
import {
  UserInputError,
  ForbiddenError,
  AuthenticationError,
} from 'apollo-server-micro';

//
// Setup
//

const test = ava as TestInterface<{ db: Mongoose }>;

test.before(async t => {
  await testUtils.setupDB(t);
});
test.afterEach.always(async t => {
  await testUtils.cleanupDB(t);
});
test.after.always(async t => {
  await testUtils.tearDownDB(t);
});

//
// Constants
//

const deleteUserMutation = `
mutation Delete($id: ID!) {
  deleteUser(id: $id) {
    id
    firstName
  } 
}
`;

//
// Tests
//

// ** delete recipe

test.serial('Should delete the user from database', async t => {
  const user = await Factory.create<User>('user');
  let userCount = await User.countDocuments();
  t.is(userCount, 1);

  const context = createContext({
    state: { user, abilities: defineUserAbility(user) },
  });

  const response = await gqlCall({
    source: deleteUserMutation,
    contextValue: context,
    variableValues: {
      id: user.id,
    },
  });

  const retrievedUser = await User.findById(user.id);

  t.is(retrievedUser, null);
});

test.serial('Should return the deleted user', async t => {
  const user = await Factory.create<User>('user');
  const context = createContext({
    state: { user, abilities: defineUserAbility(user) },
  });

  const response = await gqlCall({
    source: deleteUserMutation,
    contextValue: context,
    variableValues: {
      id: user.id,
    },
  });

  t.is(response.data.deleteUser.id, user.id);
});

test.serial('Should thow error when no user is not logged in', async t => {
  const context = createContext({ state: { user: null } });

  const response = await gqlCall({
    source: deleteUserMutation,
    contextValue: context,
    variableValues: {
      id: '',
    },
  });

  t.truthy(response.errors.length > 0);
  t.true(response.errors[0].originalError instanceof AuthenticationError);
});

test.serial('Should thow error when user does not own the Recipe', async t => {
  const user = await Factory.create<User>('user');
  const otherUser = await Factory.create<User>('user');
  const context = createContext({
    state: { user, abilities: defineUserAbility(user) },
  });

  const response = await gqlCall({
    source: deleteUserMutation,
    contextValue: context,
    variableValues: {
      id: otherUser.id,
    },
  });

  t.truthy(response.errors.length > 0);
  t.true(response.errors[0].originalError instanceof ForbiddenError);
});

test.serial(
  'deleteRecipe: Should thow error when Recipe does not exist',
  async t => {
    const user = await Factory.create<User>('user');
    const context = createContext({
      state: { user, abilities: defineUserAbility(user) },
    });

    const response = await gqlCall({
      source: deleteUserMutation,
      contextValue: context,
      variableValues: {
        id: Types.ObjectId().toHexString(),
      },
    });

    t.truthy(response.errors.length > 0);
    t.true(response.errors[0].originalError instanceof ForbiddenError);
  }
);

test.serial(
  'deleteRecipe: Should thow error when Recipe id is malformed',
  async t => {
    const user = await Factory.create<User>('user');
    const context = createContext({
      state: { user, abilities: defineUserAbility(user) },
    });

    const response = await gqlCall({
      source: deleteUserMutation,
      contextValue: context,
      variableValues: {
        id: 'malformed',
      },
    });

    t.truthy(response.errors.length > 0);
    t.true(response.errors[0].originalError instanceof UserInputError);
  }
);