local QBCore = exports['qb-core']:GetCoreObject()

-- Lokale Variablen
local showMarkers = false
local trainLocations = {}
local isNearLocation = false

-- Beim Script Start Locations vom Server holen
RegisterNetEvent('QBCore:Client:OnPlayerLoaded', function()
    TriggerServerEvent('train:getLocations')
end)

-- Locations vom Server empfangen
RegisterNetEvent('train:receiveLocations', function(locations)
    trainLocations = locations
end)

-- Locations updaten
RegisterNetEvent('train:updateLocations', function(locations)
    trainLocations = locations
end)

-- Command um Marker ein/auszuschalten
RegisterCommand('toggletrainmarkers', function()
    showMarkers = not showMarkers
    
    if showMarkers then
        QBCore.Functions.Notify('Train Marker aktiviert', 'success')
    else
        QBCore.Functions.Notify('Train Marker deaktiviert', 'error')
    end
end, false)

-- Hauptschleife für Marker und Interaktion
CreateThread(function()
    while true do
        local sleep = 1000
        
        if showMarkers and #trainLocations > 0 then
            local playerCoords = GetEntityCoords(PlayerPedId())
            local nearAnyLocation = false
            
            for i, location in ipairs(trainLocations) do
                local distance = #(playerCoords - vector3(location.x, location.y, location.z))
                
                if distance < 100.0 then
                    sleep = 0
                    -- Zeichne Marker
                    DrawMarker(1, location.x, location.y, location.z - 1.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 2.0, 2.0, 1.0, 46, 125, 50, 100, false, true, 2, nil, nil, false)
                    
                    -- Zeige Text wenn nah genug
                    if distance < 10.0 then
                        nearAnyLocation = true
                        DrawText3D(location.x, location.y, location.z + 1.0, "[E] Train Scenario starten\n" .. location.name)
                        
                        if IsControlJustPressed(0, 38) then -- E Taste
                            TriggerServerEvent('train:requestStart')
                        end
                    end
                end
            end
            
            isNearLocation = nearAnyLocation
        end
        
        Wait(sleep)
    end
end)

-- Hilfe Text anzeigen
CreateThread(function()
    while true do
        Wait(0)
        
        if isNearLocation then
            DisplayHelpText("Drücke ~INPUT_CONTEXT~ um das Train Scenario zu starten")
        end
    end
end)

-- 3D Text Funktion
function DrawText3D(x, y, z, text)
    local onScreen, _x, _y = World3dToScreen2d(x, y, z)
    local px, py, pz = table.unpack(GetGameplayCamCoords())
    local dist = GetDistanceBetweenCoords(px, py, pz, x, y, z, 1)
    
    local scale = (1 / dist) * 2
    local fov = (1 / GetGameplayCamFov()) * 100
    scale = scale * fov
    
    if onScreen then
        SetTextScale(0.0 * scale, 0.55 * scale)
        SetTextFont(0)
        SetTextProportional(1)
        SetTextColour(255, 255, 255, 255)
        SetTextDropshadow(0, 0, 0, 0, 255)
        SetTextEdge(2, 0, 0, 0, 150)
        SetTextDropShadow()
        SetTextOutline()
        SetTextEntry("STRING")
        SetTextCentre(1)
        AddTextComponentString(text)
        DrawText(_x, _y)
    end
end

function DisplayHelpText(text)
    SetTextComponentFormat("STRING")
    AddTextComponentString(text)
    DisplayHelpTextFromStringLabel(0, 0, 1, -1)
end

-- Beim Resource Start Locations holen
AddEventHandler('onResourceStart', function(resourceName)
    if GetCurrentResourceName() == resourceName then
        Wait(1000) -- Kurz warten damit QBCore geladen ist
        TriggerServerEvent('train:getLocations')
    end
end)