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40 lines
819 B
Ruby
40 lines
819 B
Ruby
# frozen_string_literal: true
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module YearlyDigests
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class ChartImageGenerator
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def initialize(digest, distance_unit: 'km')
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@digest = digest
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@distance_unit = distance_unit
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end
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def call
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html = render_chart_html
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generate_image(html)
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end
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private
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attr_reader :digest, :distance_unit
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def render_chart_html
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ApplicationController.render(
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template: 'yearly_digests/chart',
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layout: false,
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assigns: {
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monthly_distances: digest.monthly_distances,
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distance_unit: distance_unit
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}
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)
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end
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def generate_image(html)
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grover = Grover.new(
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html,
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format: 'png',
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viewport: { width: 600, height: 320 },
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wait_until: 'networkidle0'
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)
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grover.to_png
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end
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end
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end
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