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

local activeTrackings = {}

-- Callback für Fahrzeug Tracking
QBCore.Functions.CreateCallback('tracking:server:trackVehicle', function(source, cb, plate)
    local src = source
    local Player = QBCore.Functions.GetPlayer(src)
    
    if not Player then
        cb(false, 'Spieler nicht gefunden!')
        return
    end
    
    -- Überprüfe Job Berechtigung
    local allowedJobs = {'police', 'ambulance', 'mechanic'}
    local hasPermission = false
    
    for _, job in pairs(allowedJobs) do
        if Player.PlayerData.job.name == job then
            hasPermission = true
            break
        end
    end
    
    if not hasPermission then
        cb(false, 'Keine Berechtigung!')
        return
    end
    
    -- Suche Fahrzeug in der Datenbank mit Collation-Fix
    MySQL.Async.fetchAll('SELECT pv.*, p.charinfo FROM player_vehicles pv LEFT JOIN players p ON pv.citizenid COLLATE utf8mb4_general_ci = p.citizenid COLLATE utf8mb4_general_ci WHERE pv.plate = ?', {plate}, function(result)
        if result[1] then
            -- Extrahiere Besitzerinformationen
            local ownerInfo = "Unbekannt"
            if result[1].charinfo then
                local charInfo = json.decode(result[1].charinfo)
                if charInfo then
                    ownerInfo = charInfo.firstname .. " " .. charInfo.lastname
                end
            end
            
            -- Suche das Fahrzeug in der Welt
            local vehicles = GetAllVehicles()
            local foundVehicle = nil
            local vehicleCoords = nil
            
            for _, vehicle in pairs(vehicles) do
                if DoesEntityExist(vehicle) then
                    local vehiclePlate = GetVehicleNumberPlateText(vehicle)
                    if vehiclePlate and string.gsub(vehiclePlate, '^%s*(.-)%s*$', '%1') == plate then
                        foundVehicle = vehicle
                        vehicleCoords = GetEntityCoords(vehicle)
                        break
                    end
                end
            end
            
            if foundVehicle and vehicleCoords then
                activeTrackings[plate] = {
                    vehicle = foundVehicle,
                    coords = {x = vehicleCoords.x, y = vehicleCoords.y, z = vehicleCoords.z},
                    tracker = src,
                    owner = ownerInfo
                }
                
                cb(true, 'Fahrzeug gefunden!', {
                    vehicle = foundVehicle,
                    coords = {x = vehicleCoords.x, y = vehicleCoords.y, z = vehicleCoords.z},
                    owner = ownerInfo
                })
            else
                cb(false, 'Fahrzeug nicht in der Welt gefunden!')
            end
        else
            cb(false, 'Fahrzeug mit diesem Kennzeichen existiert nicht!')
        end
    end)
end)

-- Update Fahrzeug Position
RegisterNetEvent('tracking:server:updateVehicleLocation', function(plate)
    local src = source
    
    if activeTrackings[plate] and activeTrackings[plate].tracker == src then
        local vehicle = activeTrackings[plate].vehicle
        
        if DoesEntityExist(vehicle) then
            local coords = GetEntityCoords(vehicle)
            activeTrackings[plate].coords = {x = coords.x, y = coords.y, z = coords.z}
            
            TriggerClientEvent('tracking:client:updatePosition', src, plate, {x = coords.x, y = coords.y, z = coords.z})
        else
            -- Fahrzeug existiert nicht mehr
            activeTrackings[plate] = nil
            TriggerClientEvent('QBCore:Notify', src, 'Tracking verloren - Fahrzeug nicht mehr verfügbar!', 'error')
        end
    end
end)

-- Stoppe Tracking
RegisterNetEvent('tracking:server:stopTracking', function(plate)
    local src = source
    
    if activeTrackings[plate] and activeTrackings[plate].tracker == src then
        activeTrackings[plate] = nil
    end
end)

-- Cleanup bei Disconnect
AddEventHandler('playerDropped', function()
    local src = source
    
    for plate, data in pairs(activeTrackings) do
        if data.tracker == src then
            activeTrackings[plate] = nil
        end
    end
end)