import * as utils from '../utils';
import { globalBeforeEach } from '../../__jest__/before-each';

describe('getKeys()', () => {
  beforeEach(globalBeforeEach);
  it('flattens complex object', () => {
    const obj = {
      foo: 'bar',
      nested: { a: { b: {} } },
      null: null,
      undefined: undefined,
      false: false,
      array: ['hello', { hi: 'there' }, true, ['x', 'y', 'z']],
    };

    const keys = utils.getKeys(obj).sort((a, b) => (a.name > b.name ? 1 : -1));

    expect(keys).toEqual([
      { name: 'array[0]', value: obj.array[0] },
      { name: 'array[1].hi', value: obj.array[1].hi },
      { name: 'array[2]', value: obj.array[2] },
      { name: 'array[3][0]', value: obj.array[3][0] },
      { name: 'array[3][1]', value: obj.array[3][1] },
      { name: 'array[3][2]', value: obj.array[3][2] },
      { name: 'false', value: obj.false },
      { name: 'foo', value: obj.foo },
      { name: 'null', value: obj.null },
      { name: 'undefined', value: obj.undefined },
    ]);
  });

  it('ignores functions', () => {
    const obj = {
      foo: 'bar',
      toString: function() {
        // Nothing
      },
    };

    const keys = utils.getKeys(obj);
    expect(keys).toEqual([{ name: 'foo', value: 'bar' }]);
  });
});

describe('tokenizeTag()', () => {
  beforeEach(globalBeforeEach);
  it('tokenizes complex tag', () => {
    const actual = utils.tokenizeTag(`{% name bar, "baz \\"qux\\""   , 1 + 5 | default("foo") %}`);

    const expected = {
      name: 'name',
      args: [
        { type: 'variable', value: 'bar' },
        { type: 'string', value: 'baz "qux"', quotedBy: '"' },
        { type: 'expression', value: '1 + 5 | default("foo")' },
      ],
    };

    expect(actual).toEqual(expected);
  });

  it('handles whitespace', () => {
    const minimal = utils.tokenizeTag(`{%name'foo',bar%}`);
    const generous = utils.tokenizeTag(`{%name  \t'foo'  ,  bar\t\n%}`);

    const expected = {
      name: 'name',
      args: [{ type: 'string', value: 'foo', quotedBy: "'" }, { type: 'variable', value: 'bar' }],
    };

    expect(minimal).toEqual(expected);
    expect(generous).toEqual(expected);
  });

  it('handles type string', () => {
    const actual = utils.tokenizeTag(`{% name 'foo' %}`);

    const expected = {
      name: 'name',
      args: [{ type: 'string', value: 'foo', quotedBy: "'" }],
    };

    expect(actual).toEqual(expected);
  });

  it('handles type number', () => {
    const actual = utils.tokenizeTag(`{% name 9.324, 8, 7 %}`);

    const expected = {
      name: 'name',
      args: [
        { type: 'number', value: '9.324' },
        { type: 'number', value: '8' },
        { type: 'number', value: '7' },
      ],
    };

    expect(actual).toEqual(expected);
  });

  it('handles type boolean', () => {
    const actual = utils.tokenizeTag(`{% name true, false %}`);

    const expected = {
      name: 'name',
      args: [{ type: 'boolean', value: true }, { type: 'boolean', value: false }],
    };

    expect(actual).toEqual(expected);
  });

  it('handles type expression', () => {
    const actual = utils.tokenizeTag(`{% name 5 * 10 + 'hello' | default(2 - 3) %}`);

    const expected = {
      name: 'name',
      args: [{ type: 'expression', value: `5 * 10 + 'hello' | default(2 - 3)` }],
    };

    expect(actual).toEqual(expected);
  });

  /**
   * NOTE: This is actually invalid Nunjucks but we handle it anyway
   * because it's better (and easier to implement) than failing.
   */
  it('handles no commas', () => {
    const actual = utils.tokenizeTag(`{% name foo bar baz %}`);

    const expected = {
      name: 'name',
      args: [{ type: 'expression', value: 'foo bar baz' }],
    };

    expect(actual).toEqual(expected);
  });
});

describe('unTokenizeTag()', () => {
  beforeEach(globalBeforeEach);
  it('handles the default case', () => {
    const tagStr = `{% name bar, "baz \\"qux\\""   , 1 + 5, 'hi' %}`;

    const tagData = utils.tokenizeTag(tagStr);
    const result = utils.unTokenizeTag(tagData);

    expect(result).toEqual(`{% name bar, "baz \\"qux\\"", 1 + 5, 'hi' %}`);
  });

  it('fixes missing quotedBy attribute', () => {
    const tagData = {
      name: 'name',
      args: [{ type: 'file', value: 'foo/bar/baz' }, { type: 'model', value: 'foo' }],
    };

    const result = utils.unTokenizeTag(tagData);

    expect(result).toEqual(`{% name 'foo/bar/baz', 'foo' %}`);
  });
});

describe('encodeEncoding()', () => {
  beforeEach(globalBeforeEach);
  it('encodes things', () => {
    expect(utils.encodeEncoding('hello', 'base64')).toBe('b64::aGVsbG8=::46b');
    expect(utils.encodeEncoding(null, 'base64')).toBe(null);
    expect(utils.encodeEncoding('hello', 'unknown')).toBe('hello');
    expect(utils.encodeEncoding('hello')).toBe('hello');
    expect(utils.encodeEncoding('hello', 'utf8')).toBe('hello');
  });
});

describe('decodeEncoding()', () => {
  beforeEach(globalBeforeEach);
  it('encodes things', () => {
    expect(utils.decodeEncoding('b64::aGVsbG8=::46b')).toBe('hello');
    expect(utils.decodeEncoding('aGVsbG8=')).toBe('aGVsbG8=');
    expect(utils.decodeEncoding('hello')).toBe('hello');
    expect(utils.decodeEncoding(null)).toBe(null);
  });
});