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#pragma once

#include <atomic>
#include <mutex>
#include <unordered_set>
#include <vector>
#include <functional>

#include "warp.h"
#include "binaryninjaapi.h"
#include "uitypes.h"

enum WarpFetchCompletionStatus
{
    KeepCallback,
    RemoveCallback,
};

// Responsible for fetching data from the containers, to later be queried from the container interface.
class WarpFetcher
{
    LoggerRef m_logger;

    std::mutex m_requestMutex;
    std::vector<FunctionRef> m_pendingRequests;
    std::unordered_set<Warp::FunctionGUID> m_processedGuids;

    // List of callbacks to call when done fetching data, assume that others are using this as well.
    std::vector<std::function<WarpFetchCompletionStatus()> > m_completionCallbacks;

public:
    explicit WarpFetcher();

    // The global fetcher instance, this is used for the fetch dialog and the sidebar.
    static std::shared_ptr<WarpFetcher> Global();

    std::atomic<bool> m_requestInProgress = false;

    void AddCompletionCallback(std::function<WarpFetchCompletionStatus()> cb)
    {
        std::lock_guard<std::mutex> lock(m_requestMutex);
        m_completionCallbacks.push_back(std::move(cb));
    }

    void AddPendingFunction(const FunctionRef &func);

    void FetchPendingFunctions(const std::vector<Warp::SourceTag>& allowedTags);

    void ClearProcessed();
private:
    std::vector<FunctionRef> FlushPendingFunctions();

    void ExecuteCompletionCallback();
};