require 'spec_helper'

RSpec.describe 'param\'s substituions option:', type: :controller do

  context "is empty" do
    controller ApplicationController do
      def index
        @params_snake_case = params(substitutions: {})

        render nothing: true
      end
    end

    it "then does not attempt to perform any substitutions" do
      get :index, {
          'string' => 'string',
          'boolean' => true,
          'simpleArray' => [
              "0", "1", "2"
          ],
          'shallowObject' => {
              'nestedAttribute' => 'value'
          }
      }

      expect(assigns(:params_snake_case)).to eql({
          "controller" => "anonymous",
          "action" => "index",
          'string' => 'string',
          'boolean' => true,
          'simple_array' => [
              "0", "1", "2"
          ],
          'shallow_object' => {
              'nested_attribute' => 'value'
          }
      })
    end
  end

  context "is nil" do
    controller ApplicationController do
      def index
        @params_snake_case = params(substitutions: nil)

        render nothing: true
      end
    end

    it "then does not attempt to perform any substitutions" do
      get :index, {
          'string' => 'string',
          'boolean' => true,
          'simpleArray' => [
              "0", "1", "2"
          ],
          'shallowObject' => {
              'nestedAttribute' => 'value'
          }
      }

      expect(assigns(:params_snake_case)).to eql({
          "controller" => "anonymous",
          "action" => "index",
          'string' => 'string',
          'boolean' => true,
          'simple_array' => [
              "0", "1", "2"
          ],
          'shallow_object' => {
              'nested_attribute' => 'value'
          }
      })
    end
  end

  context "points to an attribute that is not a nested object" do
    controller ApplicationController do
      def index
        @params_snake_case = params(substitutions: { string: { replace: 'abc', with: '123' } })

        render nothing: true
      end
    end

    context "and the value of the attribute does NOT match" do
      it "then does not do any substitution" do
        get :index, {
            'string' => 'string',
        }

        expect(assigns(:params_snake_case)).to eql({
            "controller" => "anonymous",
            "action" => "index",
            'string' => 'string',
        })
      end

    end

    context "and the value of the attribute does match" do
      it "then does not do any substitution" do
        get :index, {
            'string' => 'abc',
        }

        expect(assigns(:params_snake_case)).to eql({
            "controller" => "anonymous",
            "action" => "index",
            'string' => '123',
        })
      end

    end
  end

  context "points to an attribute that is a nested object" do
    controller ApplicationController do
      def index
        @params_snake_case = params(substitutions: { shallow_object: { nested_attribute: { replace: 'abc', with: '123' } } })

        render nothing: true
      end
    end

    context "and the value of the attribute does NOT match" do
      it "then does not do any substitution" do
        get :index, {
            'shallowObject' => {
                'nestedAttribute' => 'value'
            }
        }

        expect(assigns(:params_snake_case)).to eql({
            "controller" => "anonymous",
            "action" => "index",
            'shallow_object' => {
                'nested_attribute' => 'value'
            }
        })
      end

    end

    context "and the value of the attribute does match" do
      it "then then performs the correct substitution" do
        get :index, {
            'shallowObject' => {
                'nestedAttribute' => 'abc'
            }
        }
        expect(assigns(:params_snake_case)).to eql({
            "controller" => "anonymous",
            "action" => "index",
            'shallow_object' => {
                'nested_attribute' => '123'
            }
        })
      end

    end
  end

  context "points to an attribute that is an array" do
    controller ApplicationController do
      def index
        @params_snake_case = params(substitutions: { array: { '*' => { shallow_object: { nested_attribute: { replace: 'abc', with: '123' } }} } })

        render nothing: true
      end
    end

    context "and the value of the attribute does NOT match" do
      it "then does not do any substitution" do
        get :index, {
            'array' => [
                'shallowObject' => {
                    'nestedAttribute' => 'value'
                },
                'shallowObject' => {
                    'nestedAttribute' => 'value'
                }
            ]
        }

        expect(assigns(:params_snake_case)).to eql({
            "controller" => "anonymous",
            "action" => "index",
            'array' => [
                'shallow_object' => {
                    'nested_attribute' => 'value'
                },
                'shallow_object' => {
                    'nested_attribute' => 'value'
                }
            ]
        })
      end

    end

    context "and the value of the attribute does match" do
      it "then performs the correct substitution" do
        get :index, {
            'array' => [
                'shallowObject' => {
                    'nestedAttribute' => 'value'
                },
                'shallowObject' => {
                    'nestedAttribute' => 'abc'
                }
            ]
        }
        expect(assigns(:params_snake_case)).to eql({
            "controller" => "anonymous",
            "action" => "index",
            'array' => [
                'shallow_object' => {
                    'nested_attribute' => 'value'
                },
                'shallow_object' => {
                    'nested_attribute' => '123'
                }
            ]
        })
      end

    end
  end

  context "is an array" do
    controller ApplicationController do
      def index
        @params_snake_case = params(substitutions: { string: [ { replace: 'abc', with: '123' }, { replace: 'cde', with: '456' }] })

        render nothing: true
      end
    end

    context "and the value of the attribute does NOT match" do
      it "then does not do any substitution" do
        get :index, {
            'string' => 'string',
        }

        expect(assigns(:params_snake_case)).to eql({
            "controller" => "anonymous",
            "action" => "index",
            'string' => 'string',
        })
      end

    end

    context "and the value of the attribute matches the first substitution" do
      it "then performs the correct substitution" do
        get :index, {
            'string' => 'abc',
        }

        expect(assigns(:params_snake_case)).to eql({
            "controller" => "anonymous",
            "action" => "index",
            'string' => '123',
        })
      end

    end

    context "and the value of the attribute matches the second substitution" do
      it "then performs the correct substitution" do
        get :index, {
            'string' => 'cde',
        }

        expect(assigns(:params_snake_case)).to eql({
            "controller" => "anonymous",
            "action" => "index",
            'string' => '456',
        })
      end

    end
  end

end