class Faraday::Adapter::Test::Stubs

def delete(path, headers = {}, &block)
  new_stub(:delete, path, headers, &block)
end

def empty?
  @stack.empty?
end

def get(path, headers = {}, &block)
  new_stub(:get, path, headers, &block)
end

def head(path, headers = {}, &block)
  new_stub(:head, path, headers, &block)
end

def initialize(strict_mode: false)
  # { get: [Stub, Stub] }
  @stack = {}
  @consumed = {}
  @strict_mode = strict_mode
  @stubs_mutex = Monitor.new
  yield(self) if block_given?
end

def match(env)
  request_method = env[:method]
  return false unless @stack.key?(request_method)
  stack = @stack[request_method]
  consumed = (@consumed[request_method] ||= [])
  @stubs_mutex.synchronize do
    stub, meta = matches?(stack, env)
    if stub
      removed = stack.delete(stub)
      consumed << removed unless removed.nil?
      return stub, meta
    end
  end
  matches?(consumed, env)
end

def matches?(stack, env)
  stack.each do |stub|
    match_result, meta = stub.matches?(env)
    return stub, meta if match_result
  end
  nil
end

def new_stub(request_method, path, headers = {}, body = nil, &block)
  normalized_path, host =
    if path.is_a?(Regexp)
      path
    else
      [
        Faraday::Utils.normalize_path(path),
        Faraday::Utils.URI(path).host
      ]
    end
  path, query = normalized_path.respond_to?(:split) ? normalized_path.split('?') : normalized_path
  headers = Utils::Headers.new(headers)
  stub = Stub.new(host, path, query, headers, body, @strict_mode, block)
  (@stack[request_method] ||= []) << stub
end

def options(path, headers = {}, &block)
  new_stub(:options, path, headers, &block)
end

def patch(path, body = nil, headers = {}, &block)
  new_stub(:patch, path, headers, body, &block)
end

def post(path, body = nil, headers = {}, &block)
  new_stub(:post, path, headers, body, &block)
end

def put(path, body = nil, headers = {}, &block)
  new_stub(:put, path, headers, body, &block)
end

def strict_mode=(value)
  @strict_mode = value
  @stack.each do |_method, stubs|
    stubs.each do |stub|
      stub.strict_mode = value
    end
  end
end

def verify_stubbed_calls
  failed_stubs = []
  @stack.each do |method, stubs|
    next if stubs.empty?
    failed_stubs.concat(
      stubs.map do |stub|
        "Expected #{method} #{stub}."
      end
    )
  end
  raise failed_stubs.join(' ') unless failed_stubs.empty?
end