#pragma once
#include <string>
#include <vector>
#include <map>
#include <deque>
#include <mutex>
#include <atomic>
#include <optional>

struct ScanRecord {
    std::string ts;
    std::string url;
    std::string label;
    int count = 0;
    bool changed = false;
};

// Thread-safe replacement for the python `state` dict. Shared between the
// SniperEngine worker thread and the Discord bot command handlers.
class SniperState {
public:
    std::atomic<bool> running{false};
    std::atomic<int> total_scans{0};
    std::atomic<int> total_changes{0};

    void setLastOffers(const std::string& url, std::vector<std::string> offers);
    std::optional<std::vector<std::string>> getLastOffers(const std::string& url);
    std::map<std::string, int> stockCounts();

    void addHistory(ScanRecord rec);
    std::vector<ScanRecord> getHistory();

    void clearOffers();
    void resetCounters();
    void resetHistory();

private:
    std::mutex mtx_;
    std::map<std::string, std::vector<std::string>> last_offers_;
    std::deque<ScanRecord> history_;
    static constexpr size_t kMaxHistory = 200;
};