/*
 * Copyright 2026 Joel Klinghed
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 */

#include "xcb_connection.hh"
#include "xcb_resources.hh"

#include <cstdlib>
#include <memory>
#include <optional>
#include <string>
#include <utility>
#include <xcb/xcb_xrm.h>

namespace xcb {

namespace {

struct DatabaseDeleter {
  void operator()(xcb_xrm_database_t* db) { xcb_xrm_database_free(db); }
};

class ResourcesXrm : public Resources {
 public:
  explicit ResourcesXrm(shared_conn conn)
      : conn_(std::move(conn)),
        db_(xcb_xrm_database_from_default(conn_.get())) {}

  std::optional<std::string> get_string(std::string const& name,
                                        std::string const& clazz) override {
    if (db_) {
      char* tmp;
      if (xcb_xrm_resource_get_string(db_.get(), std::string(name).c_str(),
                                      std::string(clazz).c_str(), &tmp) >= 0) {
        std::string ret(tmp);
        free(tmp);
        return ret;
      }
    }
    return std::nullopt;
  }

  std::optional<long> get_long(std::string const& name,
                               std::string const& clazz) override {
    if (db_) {
      long tmp;
      if (xcb_xrm_resource_get_long(db_.get(), std::string(name).c_str(),
                                    std::string(clazz).c_str(), &tmp) >= 0) {
        return tmp;
      }
    }
    return std::nullopt;
  }

  std::optional<bool> get_bool(std::string const& name,
                               std::string const& clazz) override {
    if (db_) {
      bool tmp;
      if (xcb_xrm_resource_get_bool(db_.get(), std::string(name).c_str(),
                                    std::string(clazz).c_str(), &tmp) >= 0) {
        return tmp;
      }
    }
    return std::nullopt;
  }

 private:
  shared_conn conn_;
  std::unique_ptr<xcb_xrm_database_t, DatabaseDeleter> db_;
};

}  // namespace

std::unique_ptr<Resources> Resources::create(shared_conn conn) {
  return std::make_unique<ResourcesXrm>(std::move(conn));
}

}  // namespace xcb