chore: start adding overview page

app/controllers/dashboard/sqm_application_controller.rb

@@ -0,0 +1,44 @@
+# frozen_string_literal: true
+
+module Dashboard
+  class SqmApplicationController < ApplicationController
+    protect_from_forgery with: :exception, prepend: true
+    before_action :set_schools_and_districts
+    before_action :authenticate_district
+
+    helper HeaderHelper
+
+    private
+
+    def authenticate_district
+      authenticate(district_name, "#{district_name}!")
+    end
+
+    def district_name
+      @district_name ||= @district.name.split(" ").first.downcase
+    end
+
+    def set_schools_and_districts
+      @district = District.find_by_slug district_slug
+      @districts = District.all.order(:name)
+      @school = School.find_by_slug(school_slug)
+      @schools = School.includes([:district]).where(district: @district).order(:name)
+      @academic_year = AcademicYear.find_by_range params[:year]
+      @academic_years = AcademicYear.all.order(range: :desc)
+    end
+
+    def district_slug
+      params[:district_id]
+    end
+
+    def school_slug
+      params[:school_id]
+    end
+
+    def authenticate(username, password)
+      authenticate_or_request_with_http_basic do |u, p|
+        u == username && p == password
+      end
+    end
+  end
+end