Module: Sincerely::ChartHelper

Defined in:
app/helpers/sincerely/chart_helper.rb

Constant Summary collapse

DANGER_COLOR = 
'#d4183d'
STATE_COLORS = 
{
  'draft' => '#9ca3af',
  'accepted' => '#b9e0b8',
  'delivered' => '#10b981',
  'opened' => '#78c6cc',
  'clicked' => '#bdd9db',
  'bounced' => DANGER_COLOR,
  'rejected' => DANGER_COLOR,
  'complained' => DANGER_COLOR,
  'delayed' => '#f97316'
}.freeze
DEFAULT_COLOR = 
'#6b7280'
LINE_CHART = 
{
  width: 800, height: 220,
  padding_left: 45, padding_right: 20,
  padding_top: 20, padding_bottom: 30
}.freeze
DONUT_RADIUS = 
68

Instance Method Summary collapse

Instance Method Details

#donut_segment_data(notifications_by_state) ⇒ Object 



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# File 'app/helpers/sincerely/chart_helper.rb', line 59

def donut_segment_data(notifications_by_state)
  total         = notifications_by_state.values.sum
  circumference = 2 * Math::PI * DONUT_RADIUS
  offset        = 0

  notifications_by_state.map do |state, count|
    dash_length = circumference * (count.to_f / total)
    visible_dash = [dash_length + 0.5, circumference].min
    segment = {
      state:, count:,
      color: state_color(state),
      visible_dash:,
      gap: [circumference - visible_dash, 0].max,
      offset: -offset
    }
    offset += dash_length
    segment
  end
end

#line_chart_area_points(points_str, values, config) ⇒ Object 



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# File 'app/helpers/sincerely/chart_helper.rb', line 53

def line_chart_area_points(points_str, values, config)
  bottom_y = config[:padding_top] + config[:plot_height]
  last_x   = config[:padding_left] + ((values.length - 1) * config[:x_step])
  "#{config[:padding_left]},#{bottom_y} #{points_str} #{last_x},#{bottom_y}"
end

#line_chart_config(series, labels) ⇒ Object 



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# File 'app/helpers/sincerely/chart_helper.rb', line 33

def line_chart_config(series, labels)
  plot_width  = LINE_CHART[:width]  - LINE_CHART[:padding_left] - LINE_CHART[:padding_right]
  plot_height = LINE_CHART[:height] - LINE_CHART[:padding_top]  - LINE_CHART[:padding_bottom]

  max_value = [series.values.flatten.max || 0, 1].max
  magnitude = 10**Math.log10(max_value).floor
  max_y     = [((max_value.to_f / magnitude).ceil * magnitude).to_i, 1].max
  x_step    = labels.length > 1 ? plot_width.to_f / (labels.length - 1) : plot_width

  LINE_CHART.merge(plot_width:, plot_height:, max_y:, x_step:)
end

#line_chart_points(values, config) ⇒ Object 



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# File 'app/helpers/sincerely/chart_helper.rb', line 45

def line_chart_points(values, config)
  values.each_with_index.map do |value, i|
    x = config[:padding_left] + (i * config[:x_step])
    y = config[:padding_top] + config[:plot_height] - (value.to_f / config[:max_y] * config[:plot_height])
    "#{x.round(2)},#{y.round(2)}"
  end.join(' ')
end

#state_color(state) ⇒ Object 



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# File 'app/helpers/sincerely/chart_helper.rb', line 29

def state_color(state)
  STATE_COLORS[state.to_s] || DEFAULT_COLOR
end