class Dependabot::Requirement

def self.requirements_array(requirement_string); end

def bump_major_segment(version)
  Dependabot::Version.new("#{version.segments[0].to_i + 1}.0.0")
end

def bump_minor_segment(version)
  Dependabot::Version.new("#{version.segments[0]}.#{version.segments[1].to_i + 1}.0")
end

def bump_version(version)
  Dependabot::Version.new(version.bump)
end

def constraints
  requirements.map { |op, version| "#{op} #{version}" }
end

def handle_greater_than_for_min(version)
  version
end

def handle_greater_than_or_equal_for_min(version)
  version
end

def handle_less_than_max(version)
  version
end

def handle_less_than_or_equal_for_max(version)
  version
end

def handle_max_operator(operator, version)
  case operator
  when "<=" then handle_less_than_or_equal_for_max(version)
  when "<"  then handle_less_than_max(version)
  when "~>" then handle_tilde_pessimistic_max(version)
  end
end

def handle_min_operator(operator, version)
  case operator
  when ">=" then handle_greater_than_or_equal_for_min(version)
  when ">"  then handle_greater_than_for_min(version)
  when "~>" then handle_tilde_pessimistic_for_min(version)
  end
end

def handle_tilde_pessimistic_for_min(version)
  version
end

def handle_tilde_pessimistic_max(version)
  case version.segments.length
  when 1
    bump_major_segment(version)
  when 2
    bump_minor_segment(version)
  else
    bump_version(version)
  end
end

def max_version
  # Select constraints with maximum operators
  max_constraints = requirements.select { |op, _| MAXIMUM_OPERATORS.include?(op) }
  # Process each maximum constraint using the respective handler
  effective_max_versions = max_constraints.filter_map do |op, version|
    handle_max_operator(op, version.is_a?(Dependabot::Version) ? version : Dependabot::Version.new(version))
  end
  # Return the minimum among the effective maximum constraints
  Dependabot::Version.new(effective_max_versions.min) if effective_max_versions.any?
end

def min_version
  # Select constraints with minimum operators
  min_constraints = requirements.select { |op, _| MINIMUM_OPERATORS.include?(op) }
  # Process each minimum constraint using the respective handler
  effective_min_versions = min_constraints.filter_map do |op, version|
    handle_min_operator(op, version.is_a?(Dependabot::Version) ? version : Dependabot::Version.new(version))
  end
  # Return the maximum among the effective minimum constraints
  Dependabot::Version.new(effective_min_versions.max) if effective_min_versions.any?
end