require 'spec_helper'

describe Cistern::Attributes, 'requires' do
  class RequireSpec < Sample::Model
    identity :id
    attribute :name, type: :string
    attribute :type
  end

  it 'raises if required attributes are not present' do
    expect {
      Sample.new.require_spec.requires :name
    }.to raise_exception(ArgumentError, /name is required/)

    data = { name: '1' }
    return_value = Sample.new.require_spec(data).requires :name

    expect(return_value).to eq(data)

    expect {
      Sample.new.require_spec.requires :name, :type
    }.to raise_exception(ArgumentError, /name and type are required/)

    data = { name: '1', type: 'sample' }
    return_values = Sample.new.require_spec(data).requires :name, :type
    expect(return_values).to eq(data)
  end

  it 'raises if a required attribute attribute is not present' do
    expect {
      Sample.new.require_spec.requires_one :name, :type
    }.to raise_exception(ArgumentError, /name or type are required/)

    data = { name: '1' }
    return_value = Sample.new.require_spec(data).requires_one :name, :type

    expect(return_value).to eq(data)

    data = { name: '1', type: 'sample' }
    return_values = Sample.new.require_spec(data).requires_one :name, :type
    expect(return_values).to eq(data)
  end
end

describe Cistern::Attributes, 'parsing' do
  class TypeSpec < Sample::Model
    identity :id
    attribute :name, type: :string
    attribute :created_at, type: :time
    attribute :flag, type: :boolean
    attribute :list, type: :array
    attribute :number, type: :integer
    attribute :floater, type: :float
    attribute :butternut_id, squash: %w(squash id), type: :integer
    attribute :butternut_type, squash: %w(squash type)
    attribute :squash
    attribute :vegetable, aliases: 'squash'
    attribute :custom, parser: lambda { |v, _| "X!#{v}" }
    attribute :default, default: 'im a squash'
    attribute :string_allow_nil, type: :string, allow_nil: true

    attribute :same_alias_1, aliases: 'nested'
    attribute :same_alias_2, aliases: 'nested'

    attribute :same_alias_squashed_1, squash: %w(nested attr_1)
    attribute :same_alias_squashed_2, squash: %w(nested attr_2)
    attribute :same_alias_squashed_3, squash: %w(nested attr_2)
    attribute :adam_attributes, aliases: 'attributes'

    def save
      requires :flag
    end
  end

  it 'should parse string' do
    expect(TypeSpec.new(name: 1).name).to eq('1')
    expect(TypeSpec.new(name: "b").name).to eq('b')
    expect(TypeSpec.new(name: nil).name).to eq(nil)
  end

  it 'should allow nils in string types' do
    expect(TypeSpec.new(string_allow_nil: nil).string_allow_nil).to eq(nil)
  end
  it "should handle a 'attributes' aliased attribute" do
    expect(TypeSpec.new(attributes: 'x').adam_attributes).to eq('x')
  end

  it 'should parse time' do
    time = Time.now
    created_at = TypeSpec.new(created_at: time.to_s).created_at
    expect(created_at).to be_a(Time)
    expect(created_at.to_i).to eq(time.to_i)
  end

  it 'should parse boolean' do
    expect(TypeSpec.new(flag: 'false').flag).to be_falsey
    expect(TypeSpec.new(flag: 'true').flag).to be_truthy
    expect(TypeSpec.new(flag: false).flag).to be_falsey
    expect(TypeSpec.new(flag: true).flag).to be_truthy
    expect(TypeSpec.new(flag: '0').flag).to be_falsey
    expect(TypeSpec.new(flag: '1').flag).to be_truthy
    expect(TypeSpec.new(flag: 0).flag).to be_falsey
    expect(TypeSpec.new(flag: 1).flag).to be_truthy
    expect(TypeSpec.new(flag: false)).not_to be_flag
    expect(TypeSpec.new(flag: true)).to be_flag
  end

  it 'should parse an array' do
    expect(TypeSpec.new(list: []).list).to eq([])
    expect(TypeSpec.new(list: 'item').list).to eq(['item'])
  end

  it 'should parse a float' do
    expect(TypeSpec.new(floater: '0.01').floater).to eq(0.01)
    expect(TypeSpec.new(floater: 0.01).floater).to eq(0.01)
  end

  it 'should use custom parser' do
    expect(TypeSpec.new(custom: '15').custom).to eq('X!15')
  end

  it 'should squash, cast, alias an attribute and keep a vanilla reference' do
    # vanilla squash
    expect(TypeSpec.new({ 'squash' => { 'id' => '12', 'type' => 'fred' } }).butternut_type).to eq('fred')
    expect(TypeSpec.new({ 'squash' => { 'id' => '12', 'type' => nil } }).butternut_type).to be_nil
    expect(TypeSpec.new({ 'squash' => nil }).butternut_type).to be_nil

    # composite processors: squash and cast
    expect(TypeSpec.new({ 'squash' => { 'id' => '12', 'type' => 'fred' } }).butternut_id).to eq(12)
    expect(TypeSpec.new({ 'squash' => { 'id' => nil, 'type' => 'fred' } }).butternut_id).to be_nil
    expect(TypeSpec.new({ 'squash' => { 'type' => 'fred' } }).butternut_id).to be_nil

    # override intermediate processing
    expect(TypeSpec.new({ 'squash' => { 'id' => '12', 'type' => 'fred' } }).squash).to eq({ 'id' => '12', 'type' => 'fred' })

    # alias of override
    expect(TypeSpec.new({ 'squash' => { 'id' => '12', 'type' => 'fred' } }).vegetable).to eq({ 'id' => '12', 'type' => 'fred' })
  end

  it 'should set a default value' do
    expect(TypeSpec.new.default).to eq('im a squash')
  end

  it 'should override a default value' do
    expect(TypeSpec.new(default: 'now im a different squash').default).to eq('now im a different squash')
  end

  context 'allowing the same alias for multiple attributes' do
    it 'should do so when not squashing' do
      type_spec = TypeSpec.new({ 'nested' => 'bamboo' })
      expect(type_spec.same_alias_1).to eq('bamboo')
      expect(type_spec.same_alias_2).to eq('bamboo')
    end

    it 'should do so when squashing' do
      type_spec = TypeSpec.new({ 'nested' => { 'attr_1' => 'bamboo', 'attr_2' => 'panda' } })
      expect(type_spec.same_alias_squashed_1).to eq('bamboo')
      expect(type_spec.same_alias_squashed_2).to eq('panda')
      expect(type_spec.same_alias_squashed_3).to eq('panda')
    end
  end

  it 'should slice out unaccounted for attributes' do
    expect(TypeSpec.new({ 'something' => { 'id' => '12' } }).attributes.keys).not_to include('something')
  end
end