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

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

//
// 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 removeIngredientGroupMutation = `
mutation RemoveIngredientGroup($input: RemoveIngredientGroupInput!) {
  removeIngredientGroup(input: $input) {
    id
    heading
  } 
}
`;

//
// Tests
//

test.serial('Should property delete and return an IngredientGroup', async t => {
  const user = await Factory.create<User>('user');
  const recipe = await Factory.create<Recipe>(
    'recipe',
    { ownerId: user.id },
    { ingredientCount: 0, ingredientGroupCount: 1 }
  );
  const ingredientGroup = recipe.ingredientList.nodes[0];
  const context = createContext({
    state: { user, abilities: defineUserAbility(user) },
  });
  let ingredientCount = recipe.ingredientList.nodes.length;
  t.is(ingredientCount, 1);

  const response = await gqlCall({
    source: removeIngredientGroupMutation,
    contextValue: context,
    variableValues: {
      input: {
        recipeId: recipe.id,
        groupId: ingredientGroup.id,
      },
    },
  });

  // Properly returned the removed IngredientGroup
  t.falsy(response.errors);
  if (isIngredientGroup(ingredientGroup)) {
    t.is(response.data.removeIngredientGroup.id, ingredientGroup.id);
  } else {
    t.fail('got a single ingredient :(');
  }

  // IngrdientGroup was removed from recipe doc
  ingredientCount = await Recipe.findById(recipe.id).then(r => {
    return r.ingredientList.nodes.length;
  });
  t.is(ingredientCount, 0);
});

test.serial(
  'Should thrown an error if you try and delete a single Ingredient item',
  async t => {
    const user = await Factory.create<User>('user');
    const recipe = await Factory.create<Recipe>(
      'recipe',
      { ownerId: user.id },
      { ingredientCount: 1 }
    );
    const ingredient = recipe.ingredientList.nodes[0];
    const context = createContext({
      state: { user, abilities: defineUserAbility(user) },
    });

    const response = await gqlCall({
      source: removeIngredientGroupMutation,
      contextValue: context,
      variableValues: {
        input: {
          recipeId: recipe.id,
          groupId: ingredient.id,
        },
      },
    });

    // IngrdientGroup was removed from recipe doc
    // Should retrun forbidden error
    t.truthy(response.errors.length > 0);
    t.true(response.errors[0].originalError instanceof UserInputError);
  }
);

test.serial(
  'Should return an error if you dont have permission to edit 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: removeIngredientGroupMutation,
      contextValue: context,
      variableValues: {
        input: {
          recipeId: recipe.id,
          groupId: recipe.ingredientList.nodes[0].id,
        },
      },
    });

    // Should retrun forbidden error
    t.truthy(response.errors.length > 0);
    t.true(response.errors[0].originalError instanceof ForbiddenError);
  }
);