/* -*- Mode: C++; tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
 *   Copyright 2021 Couchbase, Inc.
 *
 *   Licensed under the Apache License, Version 2.0 (the "License");
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 */

#include "eventing_get_all_functions.hxx"
#include "core/management/eventing_function.hxx"
#include "core/management/eventing_function_json.hxx"
#include "core/utils/json.hxx"
#include "error_utils.hxx"

#include <tao/json/value.hpp>

namespace couchbase::core::operations::management
{
auto
eventing_get_all_functions_request::encode_to(encoded_request_type& encoded,
                                              http_context& /* context */) const -> std::error_code
{
  encoded.method = "GET";
  encoded.path = "/api/v1/functions";
  return {};
}

auto
eventing_get_all_functions_request::make_response(error_context::http&& ctx,
                                                  const encoded_response_type& encoded) const
  -> eventing_get_all_functions_response
{
  eventing_get_all_functions_response response{ std::move(ctx) };
  if (!response.ctx.ec) {
    tao::json::value payload{};
    try {
      payload = utils::json::parse(encoded.body.data());
    } catch (const tao::pegtl::parse_error&) {
      response.ctx.ec = errc::common::parsing_failure;
      return response;
    }
    auto [ec, problem] = extract_eventing_error_code(payload);
    if (ec) {
      response.ctx.ec = ec;
      response.error.emplace(problem);
      return response;
    }
    if (!payload.is_array()) {
      response.ctx.ec = errc::common::parsing_failure;
      return response;
    }
    const auto& entries = payload.get_array();
    response.functions.reserve(entries.size());
    for (const auto& entry : entries) {
      bool include{};
      auto function = entry.as<couchbase::core::management::eventing::function>();
      if (bucket_name.has_value() && scope_name.has_value()) {
        include = function.internal.bucket_name.has_value() &&
                  function.internal.scope_name.has_value() &&
                  function.internal.bucket_name.value() == bucket_name.value() &&
                  function.internal.scope_name.value() == scope_name.value();
      } else {
        include =
          (!function.internal.bucket_name.has_value() &&
           !function.internal.scope_name.has_value()) ||
          (function.internal.bucket_name.has_value() && function.internal.scope_name.has_value() &&
           function.internal.bucket_name.value() == "*" &&
           function.internal.scope_name.value() == "*");
      }

      if (include) {
        response.functions.push_back(function);
      }
    }
  }
  return response;
}
} // namespace couchbase::core::operations::management