feat: add visit counts

app/controllers/application_controller.rb

@@ -1,6 +1,7 @@
 # frozen_string_literal: true
 class ApplicationController < ActionController::Base
   before_action :start_timer
+  before_action :count_visit
   before_action :setup_pagination_and_tags
 
   private
@@ -9,6 +10,21 @@ class ApplicationController < ActionController::Base
     @start_time = Time.zone.now
   end
 
+  def count_visit
+    key = "visit-counter/#{Digest::SHA2.hexdigest(request.remote_ip)}"
+    visited_today = $redis.get(key).present?
+    $redis.setex(key, 1.day.in_seconds, '1') unless visited_today
+
+    VisitCount.transaction do
+      visit_count = VisitCount.for_today
+      visit_count.update!(
+        count: visit_count.count + 1
+      ) unless visited_today
+      @today_visit_count = visit_count.count
+      @total_visit_count = Rails.cache.fetch('total_visits', expires_in: 1.hour) { VisitCount.sum(:count) }
+    end
+  end
+
   def setup_pagination_and_tags
     @per_page = 15
     per_page = params[:per_page]

app/models/visit_count.rb

@@ -0,0 +1,13 @@
+# == Schema Information
+#
+# Table name: visit_counts
+#
+#  id    :bigint           not null, primary key
+#  count :integer          default(0), not null
+#  date  :date             not null
+#
+class VisitCount < ApplicationRecord
+  def self.for_today
+    VisitCount.find_or_create_by(date: Time.zone.today)
+  end
+end

app/views/layouts/application.html.slim

@@ -17,8 +17,7 @@ html
         section
           h4 Stats
           span.stat Page generated in #{render_time}
-          / span.stat FIXME registered users
-          / span.stat FIXME visitors total
+          span.stat #{pluralize(@today_visit_count, 'visitor')} today, #{@total_visit_count} total.
         section
           h4 FoalFetch
           span.stat Frontend designed by DataByte, backend coded by Floorb.

db/migrate/20240409044229_create_visit_counts.rb

@@ -0,0 +1,8 @@
+class CreateVisitCounts < ActiveRecord::Migration[7.0]
+  def change
+    create_table :visit_counts do |t|
+      t.date :date, null: false
+      t.integer :count, null: false, default: 0
+    end
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.0].define(version: 2024_04_06_101101) do
+ActiveRecord::Schema[7.0].define(version: 2024_04_09_044229) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
 
@@ -81,4 +81,9 @@ ActiveRecord::Schema[7.0].define(version: 2024_04_06_101101) do
     t.text "type", null: false
   end
 
+  create_table "visit_counts", force: :cascade do |t|
+    t.date "date", null: false
+    t.integer "count", default: 0, null: false
+  end
+
 end

test/fixtures/visit_counts.yml

@@ -0,0 +1,18 @@
+# == Schema Information
+#
+# Table name: visit_counts
+#
+#  id    :bigint           not null, primary key
+#  count :integer          default(0), not null
+#  date  :date             not null
+#
+
+# This model initially had no columns defined. If you add columns to the
+# model remove the "{}" from the fixture names and add the columns immediately
+# below each fixture, per the syntax in the comments below
+#
+one: {}
+# column: value
+#
+two: {}
+# column: value

test/models/visit_count_test.rb

@@ -0,0 +1,15 @@
+# == Schema Information
+#
+# Table name: visit_counts
+#
+#  id    :bigint           not null, primary key
+#  count :integer          default(0), not null
+#  date  :date             not null
+#
+require "test_helper"
+
+class VisitCountTest < ActiveSupport::TestCase
+  # test "the truth" do
+  #   assert true
+  # end
+end