LatestEventsRepository.hpp

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/*
 *  (c) Copyright erarnitox.de - All rights reserved
 *  Author: Erarnitox <david@erarnitox.de>
 *
 *  License: MIT License
 *
 *  Description:
 *
 *  Documentation: https://droplet.erarnitox.de/doxygen/html/
 */
 
#pragma once
 
#include <mutex>
#include <string>
#include <unordered_map>
#include <unordered_set>
 
//-----------------------------------------------------
//
//-----------------------------------------------------
enum class YoutubeClaimResult {
    AlreadyAnnounced,  // video id already recorded; do not post
    Seeded,            // first observation for this key; record without posting
    Claimed,           // new video id claimed; caller should post
    Failed,            // DB/connection failure; do not post
};
 
//-----------------------------------------------------
//
//-----------------------------------------------------
class LatestEventsRepository {
  private:
    static std::unordered_map<std::string, std::string> latest_events;
    static std::unordered_map<std::string, std::unordered_set<std::string>> announced_videos;
    static std::unordered_map<std::string, bool> active_events;
    static std::mutex active_events_mutex;
    static std::mutex latest_events_mutex;
 
  public:
    [[nodiscard]] static bool insert(const std::string& key, const std::string& value) noexcept;
 
    [[nodiscard]] static bool remove(const std::string& key) noexcept;
 
    [[nodiscard]] static bool exists(const std::string& key, const std::string& value) noexcept;
 
    [[nodiscard]] static YoutubeClaimResult try_claim_video(const std::string& key,
                                                            const std::string& video_id,
                                                            const std::string& title) noexcept;
 
    [[nodiscard]] static bool load() noexcept;
 
    static void set_active(const std::string& key, bool active) noexcept;
 
    [[nodiscard]] static bool is_active(const std::string& key) noexcept;
};