local real_aes = require("resty.easy-crypto")

local function new(_)
  local fake_instance = {}

  function fake_instance:encrypt(key, _, data, _, _)
    local aes = real_aes:new({
      saltSize = 16,
      ivSize = 12,
      iterationCount = 2,
    })
    local encrypted = assert(aes:encrypt(key, data))
    self.tag = encrypted:sub(-16)
    return encrypted:sub(1, -17), nil
  end

  function fake_instance:get_aead_tag()
    return self.tag
  end

  function fake_instance:decrypt(key, _, data, _, _, tag)
    local aes = real_aes:new({
      saltSize = 16,
      ivSize = 12,
      iterationCount = 2,
    })
    return aes:decrypt(key, data .. tag)
  end

  return fake_instance
end

return {
  new = new,
}