#include "ScriptMgr.h"
#include "Player.h"
#include "GameObject.h"
#include "ObjectAccessor.h"
#include "Config.h"
#include "LootMgr.h"

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

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

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

        std::list<GameObject*> nearList;
        for (auto entry : sBobberEntries)
            plr->GetGameObjectListWithEntryInGrid(nearList, entry, sScanRange);

        for (GameObject* go : nearList)
        {
            if (!go || go->GetOwnerGUID() != plr->GetGUID())
                continue;

            if (go->getLootState() == GO_READY)
            {
                plr->SendLoot(go->GetGUID(), LOOT_FISHING);

                Loot* loot = &go->loot;
                for (uint32 i = 0; i < loot->items.size(); ++i)
                {
                    if (LootItem* li = loot->LootItemInSlot(i, plr))
                        plr->AutoStoreLootItem(i, loot);
                }

                plr->SendLootRelease(go->GetGUID());
                go->SetLootState(GO_JUST_DEACTIVATED);
                return;
            }
        }
    }
}

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

    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;
            TryAutoFish(plr);
        }
    }
};

void AddSC_autofish_world()
{
    new AutoFish_WorldScript();
}