chore: start adding overview page

app/helpers/dashboard/analyze_helper.rb

@@ -0,0 +1,70 @@
+# frozen_string_literal: true
+
+module Dashboard
+  module AnalyzeHelper
+    def svg_height
+      400
+    end
+
+    def zone_label_width
+      15
+    end
+
+    def graph_width
+      85
+    end
+
+    def analyze_graph_height
+      85
+    end
+
+    def analyze_zone_height
+      analyze_graph_height / 5
+    end
+
+    def zone_height_percentage
+      analyze_zone_height / 100.0
+    end
+
+    def analyze_category_link(district:, school:, academic_year:, category:)
+      year = academic_year.range
+      "/districts/#{district.slug}/schools/#{school.slug}/analyze?year=#{year}&academic_years=#{year}&category=#{category.category_id}"
+    end
+
+    def analyze_subcategory_link(district:, school:, academic_year:, category:, subcategory:)
+      "/districts/#{district.slug}/schools/#{school.slug}/analyze?year=#{academic_year.range}&category=#{category.category_id}&subcategory=#{subcategory.subcategory_id}"
+    end
+
+    def colors
+      @colors ||= ["#49416D", "#FFC857", "#920020", "#00B0B3", "#B2D236", "#004D61", "#FFB3CC", "#FF3D00", "#212121", "#9E9D24",
+                   "#689F38", "#388E3C", "#00897B", "#00796B", "#00695C", "#004D40", "#1B5E20", "#FF6F00", "#33691E", "#D50000",
+                   "#827717", "#F57F17", "#FF6F00", "#E65100", "#BF360C", "#3E2723", "#263238", "#37474F", "#455A64"]
+    end
+
+    def empty_dataset?(measures:, school:, academic_year:)
+      @empty_dataset ||= Hash.new do |memo, (school, academic_year)|
+        memo[[school, academic_year]] = measures.none? do |measure|
+          response_rate = measure.subcategory.response_rate(school:, academic_year:)
+          response_rate.meets_student_threshold || response_rate.meets_teacher_threshold || measure.sufficient_admin_data?(school:, academic_year:)
+        end
+      end
+
+      @empty_dataset[[school, academic_year]]
+    end
+
+    def empty_survey_dataset?(measures:, school:, academic_year:)
+      @empty_survey_dataset ||= Hash.new do |memo, (school, academic_year)|
+        memo[[school, academic_year]] = measures.none? do |measure|
+          response_rate = measure.subcategory.response_rate(school:, academic_year:)
+          response_rate.meets_student_threshold || response_rate.meets_teacher_threshold
+        end
+      end
+      @empty_survey_dataset[[school, academic_year]]
+    end
+
+    def base_url
+      analyze_subcategory_link(district: @district, school: @school, academic_year: @academic_year, category: @presenter.category,
+                               subcategory: @presenter.subcategory)
+    end
+  end
+end

app/helpers/dashboard/gauge_helper.rb

@@ -0,0 +1,99 @@
+# frozen_string_literal: true
+
+Point = Struct.new(:x, :y)
+Rect = Struct.new(:x, :y, :width, :height)
+
+module GaugeHelper
+  def outer_radius
+    100
+  end
+
+  def inner_radius
+    50
+  end
+
+  def stroke_width
+    1
+  end
+
+  def effective_radius
+    outer_radius + stroke_width
+  end
+
+  def diameter
+    2 * effective_radius
+  end
+
+  def width
+    diameter
+  end
+
+  def height
+    outer_radius + 2 * stroke_width + key_benchmark_indicator_gutter
+  end
+
+  def key_benchmark_indicator_gutter
+    10
+  end
+
+  def viewbox
+    x = arc_center.x - effective_radius
+    y = arc_center.y - effective_radius - key_benchmark_indicator_gutter
+    Rect.new(x, y, width, height)
+  end
+
+  def arc_center
+    Point.new(0, 0)
+  end
+
+  def arc_radius(radius)
+    "#{radius} #{radius}"
+  end
+
+  def angle_for(percentage:)
+    -Math::PI * (1 - percentage)
+  end
+
+  def arc_end_point_for(radius:, percentage:)
+    angle = angle_for(percentage:)
+
+    x = arc_center.x + radius * Math.cos(angle)
+    y = arc_center.y + radius * Math.sin(angle)
+    Point.new(x, y)
+  end
+
+  def arc_end_line_destination(radius:, percentage:)
+    angle = angle_for(percentage:)
+    x = arc_center.x + radius * Math.cos(angle)
+    y = arc_center.y + radius * Math.sin(angle)
+    Point.new(x, y)
+  end
+
+  def arc_start_point
+    Point.new(arc_center.x - outer_radius, arc_center.y)
+  end
+
+  def move_to(point:)
+    "M #{coordinates_for(point)}"
+  end
+
+  def draw_arc(radius:, percentage:, clockwise:)
+    sweep_flag = clockwise ? 1 : 0
+    "A #{arc_radius(radius)} 0 0 #{sweep_flag} #{coordinates_for(arc_end_point_for(radius:,
+                                                                                   percentage:))}"
+  end
+
+  def draw_line_to(point:)
+    "L #{coordinates_for(point)}"
+  end
+
+  def benchmark_line_point(radius, angle)
+    x = (radius * Math.cos(angle)).to_s
+    y = (radius * Math.sin(angle) + arc_center.y).to_s
+    Point.new(x, y)
+  end
+
+  def coordinates_for(point)
+    "#{point.x} #{point.y}"
+  end
+end

app/helpers/dashboard/variance_helper.rb

@@ -0,0 +1,54 @@
+# frozen_string_literal: true
+
+module Dashboard
+  module VarianceHelper
+    def heading_gutter
+      30
+    end
+
+    def footer_gutter
+      50
+    end
+
+    def measure_row_height
+      40
+    end
+
+    def graph_height(number_of_rows)
+      number_of_rows * measure_row_height + heading_gutter + footer_gutter
+    end
+
+    def graph_background_height(number_of_rows:)
+      number_of_rows += 1 if @has_empty_dataset
+      graph_height(number_of_rows) - footer_gutter
+    end
+
+    def measure_row_bar_height
+      20
+    end
+
+    def label_width_percentage
+      30
+    end
+
+    def graph_width_percentage
+      100 - label_width_percentage
+    end
+
+    def zones
+      %w[warning watch growth approval ideal]
+    end
+
+    def zone_width_percentage
+      100.0 / zones.size
+    end
+
+    def availability_indicator_percentage
+      3
+    end
+
+    def partial_data_indicator_size
+      20
+    end
+  end
+end