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event_filter.rb 1.23 KB
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class EventFilter
  attr_accessor :params

  class << self
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    def all
      'all'
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    end

    def push
      'push'
    end

    def merged
      'merged'
    end

    def comments
      'comments'
    end

    def team
      'team'
    end
  end

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  def initialize(params)
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    @params = if params
                params.dup
              else
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                [] # EventFilter.default_filter
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              end
  end

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  def apply_filter(events)
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    return events unless params.present?

    filter = params.dup
    actions = []

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    case filter
    when EventFilter.push
      actions = [Event::PUSHED]
    when EventFilter.merged
      actions = [Event::MERGED]
    when EventFilter.comments
      actions = [Event::COMMENTED]
    when EventFilter.team
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      actions = [Event::JOINED, Event::LEFT, Event::EXPIRED]
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    when EventFilter.all
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      actions = [
        Event::PUSHED,
        Event::MERGED,
        Event::COMMENTED,
        Event::JOINED,
        Event::LEFT,
        Event::EXPIRED
      ]
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    end

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    events.where(action: actions)
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  end

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  def options(key)
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    filter = params.dup

    if filter.include? key
      filter.delete key
    else
      filter << key
    end

    filter
  end

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  def active?(key)
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    params.include? key
  end
end