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 '../../../app/user';
import { Recipe } from '../../../app/recipe';
import { createContext } from '../../../test/utils/create-mock-context';
import { gqlCall } from '../../../test/utils/gqlCall';
import { defineUserAbility } from '../../../server/authorization/user-authorization';
import { isIngredientItem, 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 addIngredientMutation = `
mutation AddIngredient($input: AddIngredientInput!) {
  addIngredient(input: $input) {
    id
    node {
      name
    }
  } 
}
`;

//
// Tests
//

test.serial('Should property save and return a single ingredient', async t => {
  const user = await Factory.create<User>('user');
  const recipe = await Factory.create<Recipe>(
    'recipe',
    { ownerId: user.id },
    { ingredientCount: 0 }
  );
  const context = createContext({
    state: { user, abilities: defineUserAbility(user) },
  });
  let ingredientCount = await recipe.ingredientList.nodes.length;
  t.is(ingredientCount, 0);

  const response = await gqlCall({
    source: addIngredientMutation,
    contextValue: context,
    variableValues: {
      input: {
        recipeId: recipe.id,
        ingredient: {
          name: 'Rump Roast',
          quantity: 3,
          measurement: 'POUND',
          note: 'extra beefy',
        },
      },
    },
  });

  // Properly returned the new ingredient
  t.is(response.data.addIngredient.node.name, 'Rump Roast');

  // Ingrdient was added to recipe model
  ingredientCount = await Recipe.findById(recipe.id).then(r => {
    return r.ingredientList.nodes.length;
  });
  t.is(ingredientCount, 1);
});

test.serial(
  'Should property save and return an Ingredient into a group',
  async t => {
    const user = await Factory.create<User>('user');
    const recipe = await Factory.create<Recipe>(
      'recipe',
      { ownerId: user.id },
      { ingredientCount: 0, ingredientGroupCount: 1 }
    );
    const context = createContext({
      state: { user, abilities: defineUserAbility(user) },
    });
    const ingredientGroup = recipe.ingredientList.nodes[0];
    if (!isIngredientGroup(ingredientGroup)) {
      t.fail();
      return;
    }

    let ingredientCount = ingredientGroup.nodes.length;

    const response = await gqlCall({
      source: addIngredientMutation,
      contextValue: context,
      variableValues: {
        input: {
          recipeId: recipe.id,
          groupId: ingredientGroup.id,
          ingredient: {
            name: 'Rump Roast',
            quantity: 3,
            measurement: 'POUND',
            note: 'extra beefy',
          },
        },
      },
    });

    // Properly returned the new ingredient
    t.is(response.data.addIngredient.node.name, 'Rump Roast');

    // Ingrdient was added to the group
    const newIngredientCount = await Recipe.findById(recipe.id).then(r => {
      const ig = r.ingredientList.nodes.id(ingredientGroup.id);
      return isIngredientGroup(ig) ? ig.nodes.length : t.fail();
    });
    t.is(newIngredientCount, ingredientCount + 1);
  }
);

test.serial(
  'Should throw an error when the IngredientGroup doesnt exist',
  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: addIngredientMutation,
      contextValue: context,
      variableValues: {
        input: {
          recipeId: recipe.id,
          groupId: 'incorrect-id',
          ingredient: {
            name: 'Rump Roast',
            quantity: 3,
            measurement: 'POUND',
            note: 'extra beefy',
          },
        },
      },
    });

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

test.serial(
  'Should add the ingredient in the correct order position',
  async t => {
    const user = await Factory.create<User>('user');
    const recipe = await Factory.create<Recipe>(
      'recipe',
      {
        ownerId: user.id,
      },
      {
        ingredientCount: 4,
      }
    );
    const context = createContext({
      state: { user, abilities: defineUserAbility(user) },
    });

    await gqlCall({
      source: addIngredientMutation,
      contextValue: context,
      variableValues: {
        input: {
          recipeId: recipe.id,
          ingredient: {
            name: 'End',
            quantity: 1,
            measurement: 'EACH',
            note: 'should be last',
          },
        },
      },
    });

    await gqlCall({
      source: addIngredientMutation,
      contextValue: context,
      variableValues: {
        input: {
          recipeId: recipe.id,
          ingredient: {
            name: 'Second',
            quantity: 1,
            measurement: 'EACH',
            note: 'should be 2nd',
          },
          order: 1,
        },
      },
    });

    const fetchedRecipe = await Recipe.findById(recipe.id).exec();

    // last ingredient should be 'End'
    const ing1 =
      fetchedRecipe.ingredientList.nodes[
        fetchedRecipe.ingredientList.nodes.length - 1
      ];
    if (isIngredientItem(ing1)) {
      t.is(ing1.node.name, 'End');
    } else {
      t.fail();
    }

    // Second ingredient should be 'Second'
    const ing2 = fetchedRecipe.ingredientList.nodes[1];

    if (isIngredientItem(ing2)) {
      t.is(ing2.node.name, 'Second');
    } else {
      t.fail();
    }
  }
);

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: addIngredientMutation,
      contextValue: context,
      variableValues: {
        input: {
          recipeId: recipe.id,
          ingredient: {
            name: 'Rump Roast',
            quantity: 3,
            measurement: 'POUND',
            note: 'extra beefy',
          },
        },
      },
    });

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