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sqm-dashboards/app/presenters/measure_graph_row_presenter.rb

78 lines
1.8 KiB

class MeasureGraphRowPresenter
include Comparable
def initialize(measure:, score:)
@measure = measure
@score = score
end
def measure_name
@measure.name
end
def measure_id
@measure.measure_id
end
def bar_color
"fill-#{zone.type}"
end
def bar_width
"#{(bar_width_percentage * 100).round(2)}%"
end
def x_offset
case zone.type
when :ideal, :approval
"50%"
else
"#{((0.5 - bar_width_percentage) * 100).abs.round(2)}%"
end
end
def <=>(other_presenter)
if x_offset.to_f == other_presenter.x_offset.to_f
return bar_width.to_f <=> other_presenter.bar_width.to_f
end
x_offset.to_f <=> other_presenter.x_offset.to_f
end
private
IDEAL_ZONE_WIDTH_PERCENTAGE = 0.5 / 2
APPROVAL_ZONE_WIDTH_PERCENTAGE = 0.5 / 2
GROWTH_ZONE_WIDTH_PERCENTAGE = 0.5 / 3
WATCH_ZONE_WIDTH_PERCENTAGE = 0.5 / 3
WARNING_ZONE_WIDTH_PERCENTAGE = 0.5 / 3
def bar_width_percentage
case zone.type
when :ideal
percentage * IDEAL_ZONE_WIDTH_PERCENTAGE + APPROVAL_ZONE_WIDTH_PERCENTAGE
when :approval
percentage * APPROVAL_ZONE_WIDTH_PERCENTAGE
when :growth
(1 - percentage) * GROWTH_ZONE_WIDTH_PERCENTAGE
when :watch
(1 - percentage) * WATCH_ZONE_WIDTH_PERCENTAGE + GROWTH_ZONE_WIDTH_PERCENTAGE
else
(1 - percentage) * WARNING_ZONE_WIDTH_PERCENTAGE + WATCH_ZONE_WIDTH_PERCENTAGE + GROWTH_ZONE_WIDTH_PERCENTAGE
end
end
def percentage
(@score - zone.low_benchmark) / (zone.high_benchmark - zone.low_benchmark)
end
def zone
scale = Scale.new(
watch_low_benchmark: @measure.watch_low_benchmark,
growth_low_benchmark: @measure.growth_low_benchmark,
approval_low_benchmark: @measure.approval_low_benchmark,
ideal_low_benchmark: @measure.ideal_low_benchmark,
)
scale.zone_for_score(@score)
end
end