require "rails_helper"

describe Geozone do
  let(:geozone) { build(:geozone) }

  it "is valid" do
    expect(geozone).to be_valid
  end

  it "is not valid without a name" do
    geozone.name = nil
    expect(geozone).not_to be_valid
  end

  it "is valid without geojson" do
    geozone.geojson = nil
    expect(geozone).to be_valid
  end

  it "is not valid with invalid geojson file format" do
    geozone.geojson = <<~JSON
      {
        "type": "Feature",
        "geometry": {
          "type": "Incorrect",
          "coordinates": [
            [40.8792937308316, -3.9259027239257],
            [40.8788966596619, -3.9249047078766],
            [40.8789131852224, -3.9247799675785]
          ]
        }
      }
    JSON

    expect(geozone).not_to be_valid
  end

  describe "#safe_to_destroy?" do
    let(:geozone) { create(:geozone) }

    it "is true when not linked to other models" do
      expect(geozone).to be_safe_to_destroy
    end

    it "is false when already linked to user" do
      create(:user, geozone: geozone)
      expect(geozone).not_to be_safe_to_destroy
    end

    it "is false when already linked to proposal" do
      create(:proposal, geozone: geozone)
      expect(geozone).not_to be_safe_to_destroy
    end

    it "is false when already linked to debate" do
      create(:debate, geozone: geozone)
      expect(geozone).not_to be_safe_to_destroy
    end

    it "is false when already linked to a heading" do
      create(:budget_heading, geozone: geozone)
      expect(geozone).not_to be_safe_to_destroy
    end
  end

  describe "#outline_points" do
    it "returns nil when geojson is nil" do
      geozone.geojson = nil

      expect(geozone.outline_points).to be nil
    end

    it "returns normalized feature collection when geojson is a valid FeatureCollection" do
      geozone.geojson = <<~JSON
        {
          "type": "FeatureCollection",
          "features": [{
            "type": "Feature",
            "geometry": {
              "type": "Polygon",
              "coordinates": [[
                [-3.9259027239257, 40.8792937308316],
                [-3.9249047078766, 40.8788966596619],
                [-3.9247799675785, 40.8789131852224],
                [-3.9259027239257, 40.8792937308316]
              ]]
            }
          }]
        }
      JSON

      expected = {
        type: "FeatureCollection",
        features: [{
          type: "Feature",
          geometry: {
            type: "Polygon",
            coordinates: [[
              [-3.9259027239257, 40.8792937308316],
              [-3.9249047078766, 40.8788966596619],
              [-3.9247799675785, 40.8789131852224],
              [-3.9259027239257, 40.8792937308316]
            ]]
          },
          properties: {}
        }]
      }

      expect(geozone.outline_points).to eq expected.to_json
    end

    it "returns normalized feature collection when geojson is a valid Feature" do
      geozone.geojson = <<~JSON
        {
          "type": "Feature",
          "geometry": {
            "type": "Polygon",
            "coordinates": [[
              [-3.9259027239257, 40.8792937308316],
              [-3.9249047078766, 40.8788966596619],
              [-3.9247799675785, 40.8789131852224],
              [-3.9259027239257, 40.8792937308316]
            ]]
          }
        }
      JSON

      expected = {
        type: "FeatureCollection",
        features: [{
          type: "Feature",
          geometry: {
            type: "Polygon",
            coordinates: [[
              [-3.9259027239257, 40.8792937308316],
              [-3.9249047078766, 40.8788966596619],
              [-3.9247799675785, 40.8789131852224],
              [-3.9259027239257, 40.8792937308316]
            ]]
          },
          properties: {}
        }]
      }

      expect(geozone.outline_points).to eq expected.to_json
    end

    it "returns normalized feature collection when geojson is a valid Geometry object" do
      geozone.geojson = <<~JSON
        {
          "geometry": {
            "type": "Polygon",
            "coordinates": [[
              [-3.9259027239257, 40.8792937308316],
              [-3.9249047078766, 40.8788966596619],
              [-3.9247799675785, 40.8789131852224],
              [-3.9259027239257, 40.8792937308316]
            ]]
          }
        }
      JSON

      expected = {
        type: "FeatureCollection",
        features: [{
          type: "Feature",
          geometry: {
            type: "Polygon",
            coordinates: [[
              [-3.9259027239257, 40.8792937308316],
              [-3.9249047078766, 40.8788966596619],
              [-3.9247799675785, 40.8789131852224],
              [-3.9259027239257, 40.8792937308316]
            ]]
          },
          properties: {}
        }]
      }

      expect(geozone.outline_points).to eq expected.to_json
    end

    it "returns normalized feature collection when geojson is a valid top-level Geometry object" do
      geozone.geojson = <<~JSON
        {
          "type": "Polygon",
          "coordinates": [[
            [-3.9259027239257, 40.8792937308316],
            [-3.9249047078766, 40.8788966596619],
            [-3.9247799675785, 40.8789131852224],
            [-3.9259027239257, 40.8792937308316]
          ]]
        }
      JSON

      expected = {
        type: "FeatureCollection",
        features: [{
          type: "Feature",
          geometry: {
            type: "Polygon",
            coordinates: [[
              [-3.9259027239257, 40.8792937308316],
              [-3.9249047078766, 40.8788966596619],
              [-3.9247799675785, 40.8789131852224],
              [-3.9259027239257, 40.8792937308316]
            ]]
          },
          properties: {}
        }]
      }

      expect(geozone.outline_points).to eq expected.to_json
    end
  end
end