Order sales logs search results

app/models/sales_log.rb

@@ -46,9 +46,14 @@ class SalesLog < Log
   }
   scope :filter_by_purchaser_code, ->(purchid) { where("purchid ILIKE ?", "%#{purchid}%") }
   scope :search_by, lambda { |param|
+    by_id = Arel.sql("case when id = #{param.to_i} then 0 else 1 end")
+    by_purchaser_code = Arel.sql("case when purchid = '#{param}' then 0 when purchid ILIKE '%#{param}%' then 1 else 2 end")
+    by_postcode = Arel.sql("case when REPLACE(postcode_full, ' ', '') = '#{param.delete(' ')}' then 0 when REPLACE(postcode_full, ' ', '') ILIKE '%#{param.delete(' ')}%' then 1 else 2 end")
+
     filter_by_purchaser_code(param)
       .or(filter_by_postcode(param))
       .or(filter_by_id(param.gsub(/log/i, "")))
+      .order(by_id, by_purchaser_code, by_postcode)
   }
   scope :age1_answered, -> { where.not(age1: nil).or(where(age1_known: [1, 2])) }
   scope :duplicate_logs, lambda { |log|

spec/models/sales_log_spec.rb

@@ -480,7 +480,7 @@ RSpec.describe SalesLog, type: :model do
     context "when there is a log with nil values for purchid" do
       let!(:purchid_not_given) { create(:sales_log, :duplicate, purchid: nil, owning_organisation: organisation) }
 
-      it "returns the log as a duplicate if tenancy code is nil" do
+      it "returns the log as a duplicate if purchaser code is nil" do
         log.update!(purchid: nil)
         expect(duplicate_sets.count).to eq(1)
         expect(duplicate_sets.first).to contain_exactly(log.id, purchid_not_given.id)
@@ -1142,5 +1142,97 @@ RSpec.describe SalesLog, type: :model do
       end
     end
   end
+
+  context "when searching logs" do
+    let!(:sales_log_to_search) { create(:sales_log, :completed, purchid: "to search", postcode_full: "ME0 0WW") }
+
+    before do
+      create_list(:sales_log, 5, :completed)
+    end
+
+    describe "#filter_by_id" do
+      it "allows searching by a log ID" do
+        result = described_class.filter_by_id(sales_log_to_search.id.to_s)
+        expect(result.count).to eq(1)
+        expect(result.first.id).to eq sales_log_to_search.id
+      end
+    end
+
+    describe "#filter_by_purchaser_code" do
+      it "allows searching by a purchaser_code" do
+        result = described_class.filter_by_purchaser_code(sales_log_to_search.purchid)
+        expect(result.count).to eq(1)
+        expect(result.first.id).to eq sales_log_to_search.id
+      end
+
+      context "when purchaser_code has lower case letters" do
+        let(:matching_purchaser_code_lower_case) { sales_log_to_search.purchid.downcase }
+
+        it "allows searching by a purchaser_code" do
+          result = described_class.filter_by_purchaser_code(matching_purchaser_code_lower_case)
+          expect(result.count).to eq(1)
+          expect(result.first.id).to eq sales_log_to_search.id
+        end
+      end
+    end
+
+    describe "#filter_by_postcode" do
+      it "allows searching by a Property Postcode" do
+        result = described_class.filter_by_postcode(sales_log_to_search.postcode_full)
+        expect(result.count).to eq(1)
+        expect(result.first.id).to eq sales_log_to_search.id
+      end
+    end
+
+    describe "#search_by" do
+      it "allows searching using ID" do
+        result = described_class.search_by(sales_log_to_search.id.to_s)
+        expect(result.count).to eq(1)
+        expect(result.first.id).to eq sales_log_to_search.id
+      end
+
+      it "allows searching using purchaser code" do
+        result = described_class.search_by(sales_log_to_search.purchid)
+        expect(result.count).to eq(1)
+        expect(result.first.id).to eq sales_log_to_search.id
+      end
+
+      it "allows searching by a Property Postcode" do
+        result = described_class.search_by(sales_log_to_search.postcode_full)
+        expect(result.count).to eq(1)
+        expect(result.first.id).to eq sales_log_to_search.id
+      end
+
+      context "when postcode has spaces and lower case letters" do
+        let(:matching_postcode_lower_case_with_spaces) { sales_log_to_search.postcode_full.downcase.chars.insert(3, " ").join }
+
+        it "allows searching by a Property Postcode" do
+          result = described_class.search_by(matching_postcode_lower_case_with_spaces)
+          expect(result.count).to eq(1)
+          expect(result.first.id).to eq sales_log_to_search.id
+        end
+      end
+
+      context "when matching multiple records on different fields" do
+        let!(:sales_log_with_purchid) { create(:sales_log, purchid: sales_log_to_search.id) }
+        let!(:sales_log_with_postcode) { create(:sales_log, postcode_full: "C1 1AC") }
+        let!(:sales_log_with_postcode_purchid) { create(:sales_log, purchid: "C1 1AC") }
+
+        it "returns all matching records in correct order with matching IDs" do
+          result = described_class.search_by(sales_log_to_search.id.to_s)
+          expect(result.count).to eq(2)
+          expect(result.first.id).to eq sales_log_to_search.id
+          expect(result.second.id).to eq sales_log_with_purchid.id
+        end
+
+        it "returns all matching records in correct order with matching postcode" do
+          result = described_class.search_by("C1 1AC")
+          expect(result.count).to eq(2)
+          expect(result.first.id).to eq sales_log_with_postcode_purchid.id
+          expect(result.second.id).to eq sales_log_with_postcode.id
+        end
+      end
+    end
+  end
 end
 # rubocop:enable RSpec/MessageChain