#include "ScriptMgr.h"
#include "Player.h"
#include "GameObject.h"
#include "ObjectAccessor.h"
#include "GridNotifiers.h"
#include "CellImpl.h"
#include "Config.h"

namespace
{
    std::vector<uint32> sBobberEntries;
    bool sEnabled = true;
    uint32 sTickMs = 200;
    float sScanRange = 30.0f;

    std::vector<uint32> ParseEntryList(std::string const& csv)
    {
        std::vector<uint32> out;
        std::stringstream ss(csv);
        std::string item;
        while (std::getline(ss, item, ','))
        {
            auto trim = [](std::string& s)
            {
                s.erase(0, s.find_first_not_of(" \t\r\n"));
                s.erase(s.find_last_not_of(" \t\r\n") + 1);
            };
            trim(item);
            if (!item.empty())
                out.push_back(static_cast<uint32>(std::stoul(item)));
        }
        return out;
    }

    void TryAutoLootNearbyBobber(Player* plr)
    {
        if (!plr || !plr->IsInWorld())
            return;

        std::list<GameObject*> goList;
        Acore::AllGameObjectsMatchingOneEntryInRange check(plr, sBobberEntries, sScanRange);
        Acore::GameObjectListSearcher<Acore::AllGameObjectsMatchingOneEntryInRange> searcher(plr, goList, check);
        Cell::VisitObjects(plr, searcher, sScanRange);

        for (GameObject* go : goList)
        {
            if (!go)
                continue;
            if (go->GetOwnerGUID() != plr->GetGUID())
                continue;
            if (go->getLootState() == GO_READY)
            {
                plr->SendLoot(go->GetGUID(), LOOT_FISHING);
                return;
            }
        }
    }
}

class AutoFish_WorldUpdate : public WorldScript
{
public:
    AutoFish_WorldUpdate() : WorldScript("AutoFish_WorldUpdate") {}

    void OnAfterConfigLoad(bool) override
    {
        sEnabled = sConfigMgr->GetOption<bool>("AutoFish.Enabled", true);
        sTickMs = sConfigMgr->GetOption<uint32>("AutoFish.TickMs", 200u);
        sScanRange = sConfigMgr->GetOption<float>("AutoFish.ScanRange", 30.0f);
        sBobberEntries = ParseEntryList(sConfigMgr->GetOption<std::string>("AutoFish.BobberEntries", "35591"));
    }

    void OnUpdate(uint32 diff) override
    {
        if (!sEnabled)
            return;

        static uint32 acc = 0;
        acc += diff;
        if (acc < sTickMs)
            return;
        acc = 0;

        auto const& players = ObjectAccessor::GetPlayers();
        for (auto const& kv : players)
        {
            Player* plr = kv.second;
            if (!plr || !plr->IsInWorld() || plr->IsGameMaster())
                continue;
            TryAutoLootNearbyBobber(plr);
        }
    }
};

void AddSC_autofish_world()
{
    new AutoFish_WorldUpdate();
}