# frozen_string_literal: true

# Inspired by https://github.com/ljkbennett/stub_env/blob/master/lib/stub_env/helpers.rb
module QA
  module Support
    module Helpers
      module StubEnv
        def stub_env(key_or_hash, value = nil)
          init_stub unless env_stubbed?

          if key_or_hash.is_a? Hash
            key_or_hash.each { |k, v| add_stubbed_value(k, v) }
          else
            add_stubbed_value key_or_hash, value
          end
        end

        private

        STUBBED_KEY = '__STUBBED__'

        def add_stubbed_value(key, value)
          allow(ENV).to receive(:[]).with(key).and_return(value)
          allow(ENV).to receive(:key?).with(key).and_return(true)
          allow(ENV).to receive(:fetch).with(key).and_return(value)
          allow(ENV).to receive(:fetch).with(key, anything) do |_, default_val|
            value || default_val
          end
        end

        def env_stubbed?
          ENV[STUBBED_KEY]
        end

        def init_stub
          allow(ENV).to receive(:[]).and_call_original
          allow(ENV).to receive(:key?).and_call_original
          allow(ENV).to receive(:fetch).and_call_original
          # Prevent secrets from leaking in CI
          allow(ENV).to receive(:inspect).and_return([])
          add_stubbed_value(STUBBED_KEY, true)
        end
      end
    end
  end
end
