class DigestHash

# File lib/digest_hash.rb, line 5
def self.call(params)
  new(params).cache_key
end

# File lib/digest_hash.rb, line 9
def initialize(params)
  @params = params
end

# File lib/digest_hash.rb, line 13
def cache_key
  Digest::MD5.hexdigest(cleaned_params)
end

# File lib/digest_hash.rb, line 17
def cleaned_params
  @cleaned_params = @params

  remove_nulls
  deeply_sort_and_stringify_values
  stringify_keys
  sort_and_stringify_hash
end

# File lib/digest_hash.rb, line 32
def deeply_sort_and_stringify_values
  @cleaned_params = @cleaned_params.deep_merge(@cleaned_params) do |_, _, val|
    if val.is_a? Array
      val.sort.to_s
    else
      val.to_s
    end
  end
end

# File lib/digest_hash.rb, line 26
def remove_nulls
  @cleaned_params = @cleaned_params.to_h.delete_if do |_, val|
    val.nil? || val.try(:empty?)
  end
end

# File lib/digest_hash.rb, line 46
def sort_and_stringify_hash
  @cleaned_params = @cleaned_params.sort.to_s
end

# File lib/digest_hash.rb, line 42
def stringify_keys
  @cleaned_params = @cleaned_params.deep_stringify_keys
end