import ava, { TestInterface } from 'ava';
import { Mongoose, Types } from 'mongoose';
import {
  UserInputError,
  ForbiddenError,
  AuthenticationError,
} from 'apollo-server-micro';

import { Factory } from '../../../database/factory';
import * as testUtils from '../../../test/utils';
import { User } from '../../../app/user';
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';

//
// 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 updateRecipeMutation = `
mutation Update($recipe: UpdateRecipeInput!) {
  updateRecipe(input: $recipe) {
    id
    title
  } 
}
`;

//
// Tests
//

// ** update recipe

test.serial('Should save updates to DB', async t => {
  const user = await Factory.create<User>('user');
  const recipe = await Factory.create<Recipe>('recipe', {
    ownerId: user.id,
    title: 'Old Title',
  });
  const context = createContext({
    state: { user, abilities: defineUserAbility(user) },
  });

  const response = await gqlCall({
    source: updateRecipeMutation,
    contextValue: context,
    variableValues: {
      recipe: {
        id: recipe.id,
        title: 'A New Title',
      },
    },
  });

  const updatedRecipe = await Recipe.findById(recipe.id);
  t.is(updatedRecipe.title, 'A New Title');
});

test.serial('Should return the updated recipe', async t => {
  const user = await Factory.create<User>('user');
  const recipe = await Factory.create<Recipe>('recipe', {
    ownerId: user.id,
    title: 'Old Title',
  });
  const context = createContext({
    state: { user, abilities: defineUserAbility(user) },
  });

  const response = await gqlCall({
    source: updateRecipeMutation,
    contextValue: context,
    variableValues: {
      recipe: {
        id: recipe.id,
        title: 'A New Title',
      },
    },
  });

  t.is(response.data.updateRecipe.id, recipe.id);
  t.is(response.data.updateRecipe.title, 'A New Title');
});

test.serial(
  'Should return an error when the user is not logged in',
  async t => {
    const context = createContext({ state: { user: null } });

    const response = await gqlCall({
      source: updateRecipeMutation,
      contextValue: context,
      variableValues: {
        recipe: {
          id: Types.ObjectId().toHexString(),
          title: 'A New Title',
        },
      },
    });

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

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

    const response = await gqlCall({
      source: updateRecipeMutation,
      contextValue: context,
      variableValues: {
        recipe: {
          id: recipe.id,
          title: 'A New Title',
        },
      },
    });

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

test.serial('Should return an error when recipe doesnt exist', async t => {
  const user = await Factory.create<User>('user');
  const context = createContext({
    state: { user, abilities: defineUserAbility(user) },
  });
  const fakeId = Types.ObjectId.createFromTime(Date.now()).toHexString();

  const response = await gqlCall({
    source: updateRecipeMutation,
    contextValue: context,
    variableValues: {
      recipe: {
        id: fakeId,
        title: 'A New Title',
      },
    },
  });

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

test.serial('Should return an error when params are invalid', async t => {
  const user = await Factory.create<User>('user');
  const recipe = await Factory.create<Recipe>('recipe', {
    ownerId: user.id,
  });
  const context = createContext({
    state: { user, abilities: defineUserAbility(user) },
  });

  const response = await gqlCall({
    source: updateRecipeMutation,
    contextValue: context,
    variableValues: {
      recipe: {
        id: recipe.id,
        title: true,
      },
    },
  });

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

test.serial('Should return an error when 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: updateRecipeMutation,
    contextValue: context,
    variableValues: {
      recipe: {
        id: 'malformed',
        title: 'A New Title',
      },
    },
  });

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