require "rails_helper"

RSpec.describe BulkUpload::Lettings::RowParser do
  subject(:parser) { described_class.new(attributes) }

  let(:attributes) { { bulk_upload: } }
  let(:bulk_upload) { create(:bulk_upload, :lettings) }
  let(:owning_org) { create(:organisation) }
  let(:managing_org) { create(:organisation) }
  let(:setup_section_params) do
    {
      field_1: "1",
      field_111: owning_org.old_visible_id,
      field_113: managing_org.old_visible_id,
      bulk_upload:,
      field_96: "1",
      field_97: "1",
      field_98: "2023",
      field_134: "0",
    }
  end

  around do |example|
    FormHandler.instance.use_real_forms!

    example.run

    FormHandler.instance.use_fake_forms!
  end

  describe "validations" do
    before do
      stub_request(:get, /api.postcodes.io/)
      .to_return(status: 200, body: "{\"status\":200,\"result\":{\"admin_district\":\"Manchester\", \"codes\":{\"admin_district\": \"E08000003\"}}}", headers: {})

      parser.valid?
    end

    describe "#valid?" do
      context "when calling the method multiple times" do
        let(:attributes) { { bulk_upload:, field_134: 3 } }

        it "does not add keep adding errors to the pile" do
          expect { parser.valid? }.not_to change(parser.errors, :count)
        end
      end

      context "when valid row" do
        let(:attributes) do
          {
            bulk_upload:,
            field_1: "1",
            field_4: "1",
            field_7: "123",
            field_96: "1",
            field_97: "1",
            field_98: "2023",
            field_108: "EC1N",
            field_109: "2TD",
            field_111: owning_org.old_visible_id,
            field_113: managing_org.old_visible_id,
            field_130: "1",
            field_134: "0",
            field_102: "2",
            field_103: "1",
            field_104: "1",
            field_101: "1",
            field_133: "1",
            field_8: "1",
            field_9: "2",
            field_132: "1",

            field_12: "42",
            field_13: "41",
            field_14: "20",
            field_15: "18",
            field_16: "16",
            field_17: "14",
            field_18: "12",
            field_19: "10",

            field_20: "F",

            field_43: "17",
            field_44: "18",

            field_35: "1",

            field_45: "1",
            field_114: "4",
            field_46: "1",

            field_47: "1",

            field_118: "2",

            field_66: "5",
            field_67: "2",
            field_52: "1",
            field_61: "3",
            field_68: "12",

            field_65: "1",
            field_63: "EC1N",
            field_64: "2TD",

            field_69: "1",
            field_70: "1",
            field_71: "",
            field_72: "1",
            field_73: "",
            field_74: "",

            field_75: "1",
            field_76: "2",
            field_77: "2",

            field_78: "2",

            field_51: "1",
            field_48: "1",
          }
        end

        it "returns true" do
          expect(parser).to be_valid
        end

        it "instantiates a log with everything completed", aggregate_failures: true do
          questions = parser.send(:questions).reject do |q|
            parser.send(:log).optional_fields.include?(q.id) || q.completed?(parser.send(:log))
          end

          expect(questions.map(&:id).size).to be(0)
          expect(questions.map(&:id)).to eql([])
        end
      end
    end

    describe "#field_1" do
      context "when null" do
        let(:attributes) { { bulk_upload:, field_1: nil } }

        it "returns an error" do
          expect(parser.errors[:field_1]).to be_present
        end
      end

      context "when incorrect data type" do
        let(:attributes) { { bulk_upload:, field_1: "foo" } }

        it "returns an error" do
          expect(parser.errors[:field_1]).to be_present
        end
      end

      context "when unpermitted value" do
        let(:attributes) { { bulk_upload:, field_1: "101" } }

        it "returns an error" do
          expect(parser.errors[:field_1]).to be_present
        end
      end

      context "when valid" do
        let(:attributes) { { bulk_upload:, field_1: "1" } }

        it "does not return any errors" do
          expect(parser.errors[:field_1]).to be_blank
        end
      end
    end

    describe "#field_4" do
      context "when nullable permitted" do
        let(:attributes) { { bulk_upload:, field_1: "2", field_4: nil } }

        it "can be nulled" do
          expect(parser.errors[:field_4]).to be_blank
        end
      end

      context "when nullable not permitted" do
        let(:attributes) { { bulk_upload:, field_1: "1", field_4: nil } }

        it "cannot be nulled" do
          expect(parser.errors[:field_4]).to be_present
        end
      end

      context "when matching scheme cannot be found" do
        let(:attributes) { { bulk_upload:, field_1: "1", field_4: "123" } }

        xit "returns an error" do
          expect(parser.errors[:field_4]).to be_present
        end
      end
    end

    describe "#field_7" do
      context "when null" do
        let(:attributes) { { bulk_upload:, field_7: nil } }

        xit "returns an error" do
          expect(parser.errors[:field_7]).to be_present
        end
      end
    end

    describe "fields 96, 97, 98 => startdate" do
      context "when any one of these fields is blank" do
        let(:attributes) { { bulk_upload:, field_96: nil, field_97: nil, field_98: nil } }

        it "returns an error" do
          expect(parser.errors[:field_96]).to be_present
          expect(parser.errors[:field_97]).to be_present
          expect(parser.errors[:field_98]).to be_present
        end
      end
    end

    describe "#field_134" do
      context "when an unpermitted value" do
        let(:attributes) { { bulk_upload:, field_134: 3 } }

        it "has errors on the field" do
          expect(parser.errors[:field_134]).to be_present
        end
      end
    end

    describe "#field_103" do
      context "when null" do
        let(:attributes) { setup_section_params.merge({ field_103: nil }) }

        it "returns an error" do
          expect(parser.errors[:field_103]).to be_present
        end
      end

      context "when unpermitted values" do
        let(:attributes) { setup_section_params.merge({ field_103: "4" }) }

        it "returns an error" do
          expect(parser.errors[:field_103]).to be_present
        end
      end
    end
  end

  describe "#log" do
    describe "#cbl" do
      context "when field_75 is yes ie 1" do
        let(:attributes) { { bulk_upload:, field_75: 1 } }

        it "sets value to 1" do
          expect(parser.log.cbl).to be(1)
        end
      end

      context "when field_75 is no ie 2" do
        let(:attributes) { { bulk_upload:, field_75: 2 } }

        it "sets value to 0" do
          expect(parser.log.cbl).to be(0)
        end
      end
    end

    describe "#chr" do
      context "when field_76 is yes ie 1" do
        let(:attributes) { { bulk_upload:, field_76: 1 } }

        it "sets value to 1" do
          expect(parser.log.chr).to be(1)
        end
      end

      context "when field_76 is no ie 2" do
        let(:attributes) { { bulk_upload:, field_76: 2 } }

        it "sets value to 0" do
          expect(parser.log.chr).to be(0)
        end
      end
    end

    describe "#cap" do
      context "when field_77 is yes ie 1" do
        let(:attributes) { { bulk_upload:, field_77: 1 } }

        it "sets value to 1" do
          expect(parser.log.cap).to be(1)
        end
      end

      context "when field_77 is no ie 2" do
        let(:attributes) { { bulk_upload:, field_77: 2 } }

        it "sets value to 0" do
          expect(parser.log.cap).to be(0)
        end
      end
    end

    describe "#letting_allocation_unknown" do
      context "when field_75, 76, 77 are no ie 2" do
        let(:attributes) { { bulk_upload:, field_75: 2, field_76: 2, field_77: 2 } }

        it "sets value to 1" do
          expect(parser.log.letting_allocation_unknown).to be(1)
        end
      end

      context "when any one of field_75, 76, 77 is yes ie 1" do
        let(:attributes) { { bulk_upload:, field_75: 1 } }

        it "sets value to 0" do
          expect(parser.log.letting_allocation_unknown).to be(0)
        end
      end
    end
  end
end