#pragma once

#include <optional>
#include <string>
#include <unordered_map>
#include <vector>

namespace nodes {

class SymbolDocs {
public:
  SymbolDocs() {}

  SymbolDocs(std::string &&description)
      : description_(std::move(description)) {}

  SymbolDocs(const std::string &description) : description_(description) {}

  bool add_annotation_info(const std::string &annotation, std::string &&info) {
    if (annotations_info_ids_.count(annotation) == 0) {
      annotations_info_ids_[annotation] = annotations_info_.size();
      annotations_info_.emplace_back(annotation, std::move(info));
      return true;
    }
    return false;
  }

  bool add_annotation_info(const std::string &annotation,
                           const std::string &info) {
    if (annotations_info_ids_.count(annotation) == 0) {
      annotations_info_ids_[annotation] = annotations_info_.size();
      annotations_info_.emplace_back(annotation, std::move(info));
      return true;
    }
    return false;
  }

  //

  std::optional<std::string *> get_description() {
    if (description_.has_value()) {
      return &description_.value();
    }
    return std::nullopt;
  }

  std::optional<const std::string *> get_description() const {
    if (description_.has_value()) {
      return &description_.value();
    }
    return std::nullopt;
  }

  //

  std::optional<std::string *>
  get_annotation_info(const std::string &annotation) {
    auto info_iterator = annotations_info_ids_.find(annotation);
    if (info_iterator != annotations_info_ids_.end()) {
      return &annotations_info_[info_iterator->second].second;
    }
    return std::nullopt;
  }

  std::optional<const std::string *>
  get_annotation_info(const std::string &annotation) const {
    auto info_iterator = annotations_info_ids_.find(annotation);
    if (info_iterator != annotations_info_ids_.end()) {
      return &annotations_info_[info_iterator->second].second;
    }
    return std::nullopt;
  }

  //

  size_t annotations_info_size() const { return annotations_info_.size(); }

  std::string *get_annotation(size_t id) {
    return &annotations_info_[id].first;
  }

  const std::string *get_annotation(size_t id) const {
    return &annotations_info_[id].first;
  }

  std::string *get_annotation_info(size_t id) {
    return &annotations_info_[id].second;
  }

  const std::string *get_annotation_info(size_t id) const {
    return &annotations_info_[id].second;
  }

  //

private:
  std::optional<std::string> description_;
  std::vector<std::pair<std::string, std::string>> annotations_info_;
  std::unordered_map<std::string, size_t> annotations_info_ids_;
};

} // namespace nodes