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

-- Lokale Variablen
local licenseCache = {}
local cacheTimeout = 300000 -- 5 Minuten

-- Debug-Funktion
local function debugPrint(message)
    if Config.Debug then
        print("^3[License-System Server] " .. message .. "^7")
    end
end

-- Spieler-Name abrufen
local function getPlayerName(src)
    local Player = QBCore.Functions.GetPlayer(src)
    if not Player then return "Unbekannt" end
    
    local charinfo = Player.PlayerData.charinfo
    if charinfo and charinfo.firstname and charinfo.lastname then
        return charinfo.firstname .. " " .. charinfo.lastname
    end
    
    return "Unbekannt"
end

-- Berechtigung prüfen
local function hasPermission(src)
    local Player = QBCore.Functions.GetPlayer(src)
    if not Player then return false end
    
    local job = Player.PlayerData.job
    if not job then return false end
    
    return Config.AuthorizedJobs[job.name] or false
end

-- Cache-Funktionen (KORRIGIERT - Aggressive Cache-Invalidierung)
local function getCachedLicense(citizenid, licenseType)
    local cacheKey = citizenid .. "_" .. licenseType
    local cached = licenseCache[cacheKey]
    
    if cached and (os.time() * 1000 - cached.timestamp) < cacheTimeout then
        debugPrint("Cache-Hit für: " .. cacheKey)
        return cached.data
    end
    
    return nil
end

local function setCachedLicense(citizenid, licenseType, data)
    local cacheKey = citizenid .. "_" .. licenseType
    licenseCache[cacheKey] = {
        data = data,
        timestamp = os.time() * 1000
    }
    debugPrint("Lizenz gecacht: " .. cacheKey)
end

-- Cache invalidieren (ERWEITERT)
local function invalidateCache(citizenid, licenseType)
    if licenseType then
        -- Spezifische Lizenz invalidieren
        local cacheKey = citizenid .. "_" .. licenseType
        licenseCache[cacheKey] = nil
        debugPrint("Cache invalidiert für: " .. cacheKey)
    else
        -- Alle Lizenzen des Spielers invalidieren
        for key, _ in pairs(licenseCache) do
            if string.find(key, citizenid .. "_") then
                licenseCache[key] = nil
                debugPrint("Cache invalidiert für: " .. key)
            end
        end
    end
end

-- Spieler-Name aus JSON extrahieren
local function extractPlayerName(charinfo_json)
    if not charinfo_json then return "Unbekannt" end
    
    local success, charinfo = pcall(json.decode, charinfo_json)
    if success and charinfo and charinfo.firstname and charinfo.lastname then
        return charinfo.firstname .. " " .. charinfo.lastname
    end
    
    return "Unbekannt"
end

-- Sichere DB-Operation
local function safeDBOperation(operation, errorMessage, maxRetries)
    maxRetries = maxRetries or 3
    local retries = 0
    
    while retries < maxRetries do
        retries = retries + 1
        local success, result = pcall(operation)
        
        if success then
            return result
        else
            debugPrint("^3DB-Retry " .. retries .. "/" .. maxRetries .. ": " .. tostring(result) .. "^7")
            if retries >= maxRetries then
                debugPrint("^1DB-Fehler: " .. (errorMessage or "Unbekannt") .. "^7")
                debugPrint("^1Details: " .. tostring(result) .. "^7")
                return nil
            end
            Wait(1000)
        end
    end
    
    return nil
end

-- Lizenz-Status prüfen (NEUE FUNKTION)
local function isLicenseActive(license)
    if not license then return false end
    
    -- is_active prüfen (1 = aktiv, 0 = inaktiv, nil = aktiv per default)
    local isActive = license.is_active
    if isActive == nil then
        isActive = 1 -- Default: aktiv
    end
    
    if isActive ~= 1 then
        debugPrint("Lizenz inaktiv (is_active = " .. tostring(isActive) .. ")")
        return false
    end
    
    -- Ablaufdatum prüfen (falls vorhanden)
    if license.expire_date and license.expire_date ~= "" then
        local expireDate = license.expire_date
        local currentDate = os.date("%d.%m.%Y")
        
        -- Einfache Datumsvergleich (DD.MM.YYYY)
        local function parseDate(dateStr)
            local day, month, year = dateStr:match("(%d+)%.(%d+)%.(%d+)")
            if day and month and year then
                return os.time({year = tonumber(year), month = tonumber(month), day = tonumber(day)})
            end
            return nil
        end
        
        local expireTimestamp = parseDate(expireDate)
        local currentTimestamp = parseDate(currentDate)
        
        if expireTimestamp and currentTimestamp and expireTimestamp < currentTimestamp then
            debugPrint("Lizenz abgelaufen: " .. expireDate .. " < " .. currentDate)
            return false
        end
    end
    
    debugPrint("Lizenz ist aktiv und gültig")
    return true
end

-- KORRIGIERTE Lizenz-Abfrage (Ohne Cache für frische Daten)
local function getLicenseFromDB(citizenid, licenseType, skipCache)
    debugPrint("=== getLicenseFromDB START ===")
    debugPrint("CitizenID: " .. tostring(citizenid))
    debugPrint("LicenseType: " .. tostring(licenseType))
    debugPrint("SkipCache: " .. tostring(skipCache))
    
    -- Cache prüfen (nur wenn nicht übersprungen)
    if not skipCache then
        local cached = getCachedLicense(citizenid, licenseType)
        if cached then
            debugPrint("Lizenz aus Cache geladen")
            return cached
        end
    end
    
    -- Direkte DB-Abfrage (VEREINFACHT - nur aktive Lizenzen)
    local query = [[
        SELECT * FROM player_licenses 
        WHERE citizenid = ? AND license_type = ? 
        ORDER BY created_at DESC 
        LIMIT 1
    ]]
    
    local result = safeDBOperation(function()
        return MySQL.query.await(query, {citizenid, licenseType})
    end, "Fehler beim Abrufen der Lizenz")
    
    if not result or #result == 0 then
        debugPrint("^1Keine Lizenz in DB gefunden für " .. citizenid .. " / " .. licenseType .. "^7")
        return nil
    end
    
    local license = result[1]
    debugPrint("Rohe Lizenz-Daten aus DB:")
    debugPrint("ID: " .. tostring(license.id))
    debugPrint("is_active: " .. tostring(license.is_active))
    debugPrint("created_at: " .. tostring(license.created_at))
    
    -- Spieler-Namen abrufen
    local holderQuery = "SELECT charinfo FROM players WHERE citizenid = ?"
    local holderResult = safeDBOperation(function()
        return MySQL.query.await(holderQuery, {citizenid})
    end, "Fehler beim Abrufen des Spieler-Namens")
    
    if holderResult and #holderResult > 0 then
        license.holder_name = extractPlayerName(holderResult[1].charinfo)
    else
        license.holder_name = "Unbekannt"
    end
    
    -- Aussteller-Namen abrufen
    if license.issued_by then
        local issuerQuery = "SELECT charinfo FROM players WHERE citizenid = ?"
        local issuerResult = safeDBOperation(function()
            return MySQL.query.await(issuerQuery, {license.issued_by})
        end, "Fehler beim Abrufen des Aussteller-Namens")
        
        if issuerResult and #issuerResult > 0 then
            license.issued_by_name = extractPlayerName(issuerResult[1].charinfo)
        else
            license.issued_by_name = "System"
        end
    else
        license.issued_by_name = "System"
    end
    
    -- Classes parsen
    if license.classes then
        local success, classes = pcall(json.decode, license.classes)
        if success and type(classes) == "table" then
            license.classes = classes
        else
            license.classes = {}
        end
    else
        license.classes = {}
    end
    
    -- is_active normalisieren (WICHTIG!)
    if license.is_active == nil then
        license.is_active = 1
        debugPrint("is_active war nil, auf 1 gesetzt")
    end
    
    -- Status prüfen
    local isActive = isLicenseActive(license)
    debugPrint("Lizenz-Status-Prüfung: " .. tostring(isActive))
    
    if not isActive then
        debugPrint("Lizenz ist nicht aktiv/gültig")
        return nil
    end
    
    debugPrint("Lizenz erfolgreich geladen: " .. license.license_type .. " (Active: " .. tostring(license.is_active) .. ")")
    
    -- In Cache speichern (nur wenn aktiv)
    if not skipCache then
        setCachedLicense(citizenid, licenseType, license)
    end
    
    return license
end

-- Alle Lizenzen eines Spielers abrufen (KORRIGIERT)
local function getAllPlayerLicenses(citizenid)
    debugPrint("=== getAllPlayerLicenses START ===")
    debugPrint("CitizenID: " .. tostring(citizenid))
    
    -- Alle Lizenzen abrufen (ohne is_active Filter)
    local query = "SELECT * FROM player_licenses WHERE citizenid = ? ORDER BY license_type, created_at DESC"
    
    local result = safeDBOperation(function()
        return MySQL.query.await(query, {citizenid})
    end, "Fehler beim Abrufen aller Lizenzen")
    
    if not result or #result == 0 then
        debugPrint("Keine Lizenzen gefunden für: " .. citizenid)
        return {}
    end
    
    local licenses = {}
    local seenTypes = {}
    
    -- Spieler-Namen einmal abrufen
    local holderQuery = "SELECT charinfo FROM players WHERE citizenid = ?"
    local holderResult = safeDBOperation(function()
        return MySQL.query.await(holderQuery, {citizenid})
    end, "Fehler beim Abrufen des Spieler-Namens")
    
    local holderName = "Unbekannt"
    if holderResult and #holderResult > 0 then
        holderName = extractPlayerName(holderResult[1].charinfo)
    end
    
    for _, license in ipairs(result) do
        -- Nur die neueste Lizenz pro Typ nehmen
        if not seenTypes[license.license_type] then
            seenTypes[license.license_type] = true
            
            license.holder_name = holderName
            
            -- Aussteller-Namen abrufen
            if license.issued_by then
                local issuerQuery = "SELECT charinfo FROM players WHERE citizenid = ?"
                local issuerResult = safeDBOperation(function()
                    return MySQL.query.await(issuerQuery, {license.issued_by})
                end, "Fehler beim Abrufen des Aussteller-Namens")
                
                if issuerResult and #issuerResult > 0 then
                    license.issued_by_name = extractPlayerName(issuerResult[1].charinfo)
                else
                    license.issued_by_name = "System"
                end
            else
                license.issued_by_name = "System"
            end
            
            -- Classes parsen
            if license.classes then
                local success, classes = pcall(json.decode, license.classes)
                if success and type(classes) == "table" then
                    license.classes = classes
                else
                    license.classes = {}
                end
            else
                license.classes = {}
            end
            
            -- is_active normalisieren
            if license.is_active == nil then
                license.is_active = 1
            end
            
            -- Status prüfen und nur aktive Lizenzen hinzufügen
            if isLicenseActive(license) then
                table.insert(licenses, license)
                debugPrint("Aktive Lizenz hinzugefügt: " .. license.license_type)
            else
                debugPrint("Inaktive Lizenz übersprungen: " .. license.license_type)
            end
        end
    end
    
    debugPrint("Verarbeitete aktive Lizenzen: " .. #licenses)
    return licenses
end

-- Lizenz in Datenbank speichern (KORRIGIERT - Explizite is_active Setzung)
local function saveLicenseToDB(citizenid, licenseType, issuedBy, classes)
    debugPrint("=== saveLicenseToDB START ===")
    debugPrint("CitizenID: " .. tostring(citizenid))
    debugPrint("LicenseType: " .. tostring(licenseType))
    debugPrint("IssuedBy: " .. tostring(issuedBy))
    
    local config = Config.LicenseTypes[licenseType]
    if not config then
        debugPrint("^1Fehler: Unbekannter Lizenztyp: " .. licenseType .. "^7")
        return false
    end
    
    -- Cache für diesen Spieler komplett invalidieren
    invalidateCache(citizenid)
    
    -- Spieler-Name abrufen
    local holderQuery = "SELECT charinfo FROM players WHERE citizenid = ?"
    local holderResult = safeDBOperation(function()
        return MySQL.query.await(holderQuery, {citizenid})
    end, "Fehler beim Abrufen des Spieler-Namens")
    
    local holderName = "Unbekannt"
    if holderResult and #holderResult > 0 and holderResult[1].charinfo then
        holderName = extractPlayerName(holderResult[1].charinfo)
    end
    
    -- Datum berechnen
    local issueDate = os.date("%d.%m.%Y")
    local expireDate = nil
    
    if config.validity_days then
        local expireTimestamp = os.time() + (config.validity_days * 24 * 60 * 60)
        expireDate = os.date("%d.%m.%Y", expireTimestamp)
    end
    
    -- Classes zu JSON konvertieren
    local classesJson = json.encode(classes or {})
    
    -- WICHTIG: Alte Lizenz explizit deaktivieren
    local deactivateQuery = "UPDATE player_licenses SET is_active = 0 WHERE citizenid = ? AND license_type = ?"
    local deactivateResult = safeDBOperation(function()
        return MySQL.query.await(deactivateQuery, {citizenid, licenseType})
    end, "Fehler beim Deaktivieren alter Lizenz")
    
    debugPrint("Alte Lizenzen deaktiviert: " .. tostring(deactivateResult ~= nil))
    
    -- Neue Lizenz einfügen (EXPLIZIT is_active = 1)
    local insertQuery = [[
        INSERT INTO player_licenses 
        (citizenid, license_type, name, issue_date, expire_date, issued_by, is_active, classes, created_at) 
        VALUES (?, ?, ?, ?, ?, ?, 1, ?, ?)
    ]]
    
    local createdAt = os.time() -- Unix Timestamp
    
    local insertData = {
        citizenid,
        licenseType,
        holderName,
        issueDate,
        expireDate,
        issuedBy,
        -- is_active = 1 ist direkt in der Query
        classesJson,
        createdAt
    }
    
    debugPrint("Führe INSERT-Query aus...")
    debugPrint("Daten: " .. json.encode(insertData))
    
    local result = safeDBOperation(function()
        return MySQL.insert.await(insertQuery, insertData)
    end, "Fehler beim Speichern der Lizenz")
    
    if result then
        debugPrint("Lizenz erfolgreich gespeichert. ID: " .. result)
        
        -- Cache komplett invalidieren (sicherstellen dass neue Daten geladen werden)
        invalidateCache(citizenid)
        
        -- Sofort neue Lizenz aus DB laden um zu verifizieren
        Wait(100) -- Kurz warten
        local newLicense = getLicenseFromDB(citizenid, licenseType, true) -- Skip Cache
        
        if newLicense then
            debugPrint("Neue Lizenz erfolgreich verifiziert: is_active = " .. tostring(newLicense.is_active))
        else
            debugPrint("^3Warnung: Neue Lizenz konnte nicht verifiziert werden^7")
        end
        
        return true
    else
        debugPrint("^1Fehler beim Speichern der Lizenz^7")
        return false
    end
end

-- Lizenz entziehen (KORRIGIERT)
local function revokeLicenseInDB(citizenid, licenseType)
    debugPrint("=== revokeLicenseInDB START ===")
    debugPrint("CitizenID: " .. tostring(citizenid))
    debugPrint("LicenseType: " .. tostring(licenseType))
    
    local query = "UPDATE player_licenses SET is_active = 0 WHERE citizenid = ? AND license_type = ? AND is_active = 1"
    
    local result = safeDBOperation(function()
        return MySQL.query.await(query, {citizenid, licenseType})
    end, "Fehler beim Entziehen der Lizenz")
    
    if result then
        debugPrint("Lizenz erfolgreich entzogen")
        
        -- Cache invalidieren
        invalidateCache(citizenid, licenseType)
        
        return true
    else
        debugPrint("^1Fehler beim Entziehen der Lizenz^7")
        return false
    end
end

-- Cache bereinigen
local function cleanupCache()
    local now = os.time() * 1000
    local cleaned = 0
    
    for key, cached in pairs(licenseCache) do
        if (now - cached.timestamp) > cacheTimeout then
            licenseCache[key] = nil
            cleaned = cleaned + 1
        end
    end
    
    if cleaned > 0 then
        debugPrint("Cache bereinigt: " .. cleaned .. " Einträge")
    end
end

-- Cache-Cleanup Thread
CreateThread(function()
    while true do
        Wait(300000) -- 5 Minuten
        cleanupCache()
    end
end)

-- EVENT HANDLER: Lizenz anfordern
RegisterNetEvent('license-system:server:requestLicense', function(targetId)
    local src = source
    debugPrint("=== Event: requestLicense ===")
    debugPrint("Source: " .. src .. ", Target: " .. targetId)
    
    if not hasPermission(src) then
        debugPrint("Keine Berechtigung für Spieler: " .. src)
        TriggerClientEvent('license-system:client:receiveLicense', src, nil)
        return
    end
    
    local targetPlayer = QBCore.Functions.GetPlayer(targetId)
    if not targetPlayer then
        debugPrint("Ziel-Spieler nicht gefunden: " .. targetId)
        TriggerClientEvent('license-system:client:receiveLicense', src, nil)
        return
    end
    
    local citizenid = targetPlayer.PlayerData.citizenid
    
    -- PRIORITÄT: Erst nach Ausweis suchen, dann andere Lizenzen
    local licenseTypes = {"id_card", "driver_license", "weapon_license", "pilot_license"}
    local foundLicense = nil
    
    for _, licenseType in ipairs(licenseTypes) do
        if Config.LicenseTypes[licenseType] then
            local license = getLicenseFromDB(citizenid, licenseType, true) -- Skip Cache für frische Daten
            
            if license then
                foundLicense = {
                    license = license,
                    config = Config.LicenseTypes[licenseType]
                }
                debugPrint("Lizenz gefunden: " .. licenseType)
                break
            end
        end
    end
    
    if foundLicense then
        debugPrint("Sende Lizenz an Client: " .. foundLicense.license.license_type)
        TriggerClientEvent('license-system:client:receiveLicense', src, foundLicense)
    else
        debugPrint("Keine Lizenz gefunden")
        TriggerClientEvent('license-system:client:receiveLicense', src, nil)
    end
end)

-- EVENT HANDLER: Eigene Lizenz anfordern (KORRIGIERT)
RegisterNetEvent('license-system:server:requestMyLicense', function(licenseType)
    local src = source
    debugPrint("=== Event: requestMyLicense ===")
    debugPrint("Source: " .. src .. ", LicenseType: " .. tostring(licenseType))
    
    local Player = QBCore.Functions.GetPlayer(src)
    if not Player then
        debugPrint("Spieler nicht gefunden: " .. src)
        TriggerClientEvent('license-system:client:receiveMyLicense', src, nil, licenseType)
        return
    end
    
    local citizenid = Player.PlayerData.citizenid
    
    -- Falls kein spezifischer Typ angegeben, suche nach Ausweis
    if not licenseType or licenseType == "" then
        licenseType = "id_card"
        debugPrint("Kein Lizenztyp angegeben, verwende: " .. licenseType)
    end
    
    local license = getLicenseFromDB(citizenid, licenseType, true) -- Skip Cache für frische Daten
    
    if license then
        local licenseData = {
            license = license,
            config = Config.LicenseTypes[licenseType]
        }
        debugPrint("Sende eigene Lizenz an Client: " .. licenseType)
        TriggerClientEvent('license-system:client:receiveMyLicense', src, licenseData, licenseType)
    else
        debugPrint("Keine aktive eigene Lizenz gefunden: " .. licenseType)
        TriggerClientEvent('license-system:client:receiveMyLicense', src, nil, licenseType)
    end
end)

-- EVENT HANDLER: Alle Spieler-Lizenzen anfordern
RegisterNetEvent('license-system:server:requestPlayerLicenses', function(targetId)
    local src = source
    debugPrint("=== Event: requestPlayerLicenses ===")
    debugPrint("Source: " .. src .. ", Target: " .. targetId)
    
    if not hasPermission(src) then
        debugPrint("Keine Berechtigung für Spieler: " .. src)
        TriggerClientEvent('license-system:client:receivePlayerLicenses', src, {}, targetId, "Unbekannt")
        return
    end
    
    local targetPlayer = QBCore.Functions.GetPlayer(targetId)
    if not targetPlayer then
        debugPrint("Ziel-Spieler nicht gefunden: " .. targetId)
        TriggerClientEvent('license-system:client:receivePlayerLicenses', src, {}, targetId, "Unbekannt")
        return
    end
    
    local citizenid = targetPlayer.PlayerData.citizenid
    local targetName = getPlayerName(targetId)
    local licenses = getAllPlayerLicenses(citizenid)
    
    debugPrint("Sende " .. #licenses .. " Lizenzen für " .. targetName)
    TriggerClientEvent('license-system:client:receivePlayerLicenses', src, licenses, targetId, targetName)
end)

-- EVENT HANDLER: Lizenz ausstellen (KORRIGIERT)
RegisterNetEvent('license-system:server:issueLicense', function(targetId, licenseType, classes)
    local src = source
    debugPrint("=== Event: issueLicense ===")
    debugPrint("Source: " .. src .. ", Target: " .. targetId .. ", Type: " .. licenseType)
    
    if not hasPermission(src) then
        debugPrint("Keine Berechtigung für Spieler: " .. src)
        TriggerClientEvent('QBCore:Notify', src, Config.Notifications.no_permission.message, Config.Notifications.no_permission.type)
        return
    end
    
    local targetPlayer = QBCore.Functions.GetPlayer(targetId)
    if not targetPlayer then
        debugPrint("Ziel-Spieler nicht gefunden: " .. targetId)
        TriggerClientEvent('QBCore:Notify', src, 'Spieler nicht gefunden!', 'error')
        return
    end
    
    local issuerPlayer = QBCore.Functions.GetPlayer(src)
    if not issuerPlayer then
        debugPrint("Aussteller nicht gefunden: " .. src)
        return
    end
    
    local targetCitizenId = targetPlayer.PlayerData.citizenid
    local issuerCitizenId = issuerPlayer.PlayerData.citizenid
    
    -- Prüfen ob aktive Lizenz bereits existiert (Skip Cache)
    local existingLicense = getLicenseFromDB(targetCitizenId, licenseType, true)
    
    if existingLicense then
        debugPrint("Lizenz bereits vorhanden und aktiv")
        TriggerClientEvent('QBCore:Notify', src, 'Spieler hat bereits eine aktive ' .. (Config.LicenseTypes[licenseType].label or licenseType) .. '!', 'error')
        return
    end
    
    -- Kosten prüfen
    local config = Config.LicenseTypes[licenseType]
    if config.price and config.price > 0 then
        if issuerPlayer.PlayerData.money.cash < config.price then
            debugPrint("Nicht genug Geld für Lizenz-Ausstellung")
            TriggerClientEvent('QBCore:Notify', src, 'Nicht genug Bargeld! Benötigt: $' .. config.price, 'error')
            return
        end
        
        -- Geld abziehen
        issuerPlayer.Functions.RemoveMoney('cash', config.price, 'license-issued')
        TriggerClientEvent('QBCore:Notify', src, 'Lizenz-Gebühr bezahlt: $' .. config.price, 'success')
    end
    
    -- Lizenz in Datenbank speichern
    local success = saveLicenseToDB(targetCitizenId, licenseType, issuerCitizenId, classes)
    
    if success then
        local targetName = getPlayerName(targetId)
        local issuerName = getPlayerName(src)
        
        debugPrint("Lizenz erfolgreich ausgestellt")
        
        -- Benachrichtigungen
        TriggerClientEvent('QBCore:Notify', src, 'Lizenz erfolgreich ausgestellt für ' .. targetName, 'success')
        TriggerClientEvent('QBCore:Notify', targetId, 'Du hast eine neue Lizenz erhalten: ' .. config.label, 'success')
        
        -- Events senden
        TriggerClientEvent('license-system:client:licenseIssued', src, targetId, licenseType)
        TriggerClientEvent('license-system:client:refreshMenu', src)
        
        -- Log
        debugPrint("Lizenz " .. licenseType .. " ausgestellt von " .. issuerName .. " für " .. targetName)
    else
        debugPrint("^1Fehler beim Ausstellen der Lizenz^7")
        TriggerClientEvent('QBCore:Notify', src, 'Fehler beim Ausstellen der Lizenz!', 'error')
    end
end)

-- EVENT HANDLER: Lizenz entziehen
RegisterNetEvent('license-system:server:revokeLicense', function(targetId, licenseType)
    local src = source
    debugPrint("=== Event: revokeLicense ===")
    debugPrint("Source: " .. src .. ", Target: " .. targetId .. ", Type: " .. licenseType)
    
    if not hasPermission(src) then
        debugPrint("Keine Berechtigung für Spieler: " .. src)
        TriggerClientEvent('QBCore:Notify', src, Config.Notifications.no_permission.message, Config.Notifications.no_permission.type)
        return
    end
    
    local targetPlayer = QBCore.Functions.GetPlayer(targetId)
    if not targetPlayer then
        debugPrint("Ziel-Spieler nicht gefunden: " .. targetId)
        TriggerClientEvent('QBCore:Notify', src, 'Spieler nicht gefunden!', 'error')
        return
    end
    
    local targetCitizenId = targetPlayer.PlayerData.citizenid
    
    -- Lizenz entziehen
    local success = revokeLicenseInDB(targetCitizenId, licenseType)
    
    if success then
        local targetName = getPlayerName(targetId)
        local issuerName = getPlayerName(src)
        local config = Config.LicenseTypes[licenseType]
        
        debugPrint("Lizenz erfolgreich entzogen")
        
        -- Benachrichtigungen
        TriggerClientEvent('QBCore:Notify', src, 'Lizenz erfolgreich entzogen von ' .. targetName, 'success')
        TriggerClientEvent('QBCore:Notify', targetId, 'Deine Lizenz wurde entzogen: ' .. (config.label or licenseType), 'error')
        
        -- Events senden
        TriggerClientEvent('license-system:client:licenseRevoked', src, targetId, licenseType)
        TriggerClientEvent('license-system:client:refreshMenu', src)
        
        -- Log
        debugPrint("Lizenz " .. licenseType .. " entzogen von " .. issuerName .. " für " .. targetName)
    else
        debugPrint("^1Fehler beim Entziehen der Lizenz^7")
        TriggerClientEvent('QBCore:Notify', src, 'Fehler beim Entziehen der Lizenz!', 
        'error')
    end
end)

-- EXPORT FUNKTIONEN (KORRIGIERT)
exports('hasLicense', function(citizenid, licenseType)
    if not citizenid or not licenseType then return false end
    
    local license = getLicenseFromDB(citizenid, licenseType, true) -- Skip Cache für aktuelle Daten
    return license ~= nil
end)

exports('issueLicense', function(citizenid, licenseType, issuedBy, classes)
    if not citizenid or not licenseType then return false end
    
    issuedBy = issuedBy or 'system'
    return saveLicenseToDB(citizenid, licenseType, issuedBy, classes)
end)

exports('revokeLicense', function(citizenid, licenseType)
    if not citizenid or not licenseType then return false end
    
    return revokeLicenseInDB(citizenid, licenseType)
end)

exports('getPlayerLicenses', function(citizenid)
    if not citizenid then return {} end
    
    return getAllPlayerLicenses(citizenid)
end)

exports('getPlayerLicense', function(citizenid, licenseType)
    if not citizenid or not licenseType then return nil end
    
    return getLicenseFromDB(citizenid, licenseType, true) -- Skip Cache
end)

-- DEBUG COMMAND: Lizenz manuell erstellen
RegisterCommand('createlicense', function(source, args, rawCommand)
    if source == 0 then -- Console only
        if #args < 2 then
            print("Usage: createlicense <citizenid> <license_type>")
            return
        end
        
        local citizenid = args[1]
        local licenseType = args[2]
        
        if not Config.LicenseTypes[licenseType] then
            print("Unbekannter Lizenztyp: " .. licenseType)
            return
        end
        
        local success = saveLicenseToDB(citizenid, licenseType, 'console', {})
        
        if success then
            print("Lizenz erfolgreich erstellt: " .. licenseType .. " für " .. citizenid)
        else
            print("Fehler beim Erstellen der Lizenz")
        end
    end
end, true)

-- DEBUG COMMAND: Lizenz prüfen (ERWEITERT)
RegisterCommand('checklicense', function(source, args, rawCommand)
    if source == 0 then -- Console only
        if #args < 2 then
            print("Usage: checklicense <citizenid> <license_type>")
            return
        end
        
        local citizenid = args[1]
        local licenseType = args[2]
        
        -- Direkte DB-Abfrage ohne Cache
        local query = "SELECT * FROM player_licenses WHERE citizenid = ? AND license_type = ? ORDER BY created_at DESC"
        local result = MySQL.query.await(query, {citizenid, licenseType})
        
        if result and #result > 0 then
            print("=== ALLE LIZENZEN GEFUNDEN ===")
            for i, license in ipairs(result) do
                print("--- Lizenz " .. i .. " ---")
                print("ID: " .. (license.id or "N/A"))
                print("CitizenID: " .. (license.citizenid or "N/A"))
                print("Typ: " .. (license.license_type or "N/A"))
                print("Name: " .. (license.name or "N/A"))
                print("Ausstellungsdatum: " .. (license.issue_date or "N/A"))
                print("Ablaufdatum: " .. (license.expire_date or "N/A"))
                print("Ausgestellt von: " .. (license.issued_by or "N/A"))
                print("Aktiv (DB): " .. tostring(license.is_active))
                print("Klassen: " .. (license.classes or "[]"))
                print("Erstellt am: " .. (license.created_at or "N/A"))
                print("---")
            end
            print("===============================")
            
            -- Zusätzlich: Lizenz über Funktion prüfen
            local license = getLicenseFromDB(citizenid, licenseType, true)
            if license then
                print("=== AKTIVE LIZENZ (über Funktion) ===")
                print("Typ: " .. license.license_type)
                print("Aktiv: " .. tostring(license.is_active))
                print("Status-Check: " .. tostring(isLicenseActive(license)))
                print("====================================")
            else
                print("=== KEINE AKTIVE LIZENZ (über Funktion) ===")
            end
        else
            print("Keine Lizenz gefunden für: " .. citizenid .. " / " .. licenseType)
        end
    end
end, true)

-- DEBUG COMMAND: Alle Lizenzen eines Spielers anzeigen
RegisterCommand('checkalllicenses', function(source, args, rawCommand)
    if source == 0 then -- Console only
        if #args < 1 then
            print("Usage: checkalllicenses <citizenid>")
            return
        end
        
        local citizenid = args[1]
        
        -- Direkte DB-Abfrage
        local query = "SELECT * FROM player_licenses WHERE citizenid = ? ORDER BY license_type, created_at DESC"
        local result = MySQL.query.await(query, {citizenid})
        
        if result and #result > 0 then
            print("=== ALLE LIZENZEN FÜR " .. citizenid .. " ===")
            for i, license in ipairs(result) do
                print(i .. ". " .. license.license_type .. " | Aktiv: " .. tostring(license.is_active) .. " | ID: " .. license.id)
            end
            print("=========================================")
            
            -- Über Funktion
            local activeLicenses = getAllPlayerLicenses(citizenid)
            print("=== AKTIVE LIZENZEN (über Funktion) ===")
            for i, license in ipairs(activeLicenses) do
                print(i .. ". " .. license.license_type .. " | Aktiv: " .. tostring(license.is_active))
            end
            print("======================================")
        else
            print("Keine Lizenzen gefunden für: " .. citizenid)
        end
    end
end, true)

-- DEBUG COMMAND: Lizenz-Status forciert aktualisieren
RegisterCommand('fixlicense', function(source, args, rawCommand)
    if source == 0 then -- Console only
        if #args < 2 then
            print("Usage: fixlicense <citizenid> <license_type>")
            return
        end
        
        local citizenid = args[1]
        local licenseType = args[2]
        
        -- Neueste Lizenz auf aktiv setzen
        local query = [[
            UPDATE player_licenses 
            SET is_active = 1 
            WHERE citizenid = ? AND license_type = ? AND id = (
                SELECT id FROM (
                    SELECT id FROM player_licenses 
                    WHERE citizenid = ? AND license_type = ? 
                    ORDER BY created_at DESC LIMIT 1
                ) as temp
            )
        ]]
        
        local result = MySQL.query.await(query, {citizenid, licenseType, citizenid, licenseType})
        
        if result then
            print("Lizenz-Status aktualisiert für: " .. citizenid .. " / " .. licenseType)
            
            -- Cache invalidieren
            invalidateCache(citizenid, licenseType)
            
            -- Prüfen
            local license = getLicenseFromDB(citizenid, licenseType, true)
            if license then
                print("Lizenz ist jetzt aktiv: " .. tostring(license.is_active))
            else
                print("Lizenz konnte nicht geladen werden")
            end
        else
            print("Fehler beim Aktualisieren der Lizenz")
        end
    end
end, true)

-- INITIALISIERUNG
CreateThread(function()
    debugPrint("License-System Server gestartet (Status-Fix)")
    
    -- Warten bis QBCore geladen ist
    while not QBCore do
        Wait(100)
    end
    
    debugPrint("QBCore erfolgreich geladen")
    
    -- Datenbank-Verbindung testen
    local testResult = safeDBOperation(function()
        return MySQL.query.await("SELECT 1 as test")
    end, "Datenbank-Verbindungstest")
    
    if testResult then
        debugPrint("Datenbank-Verbindung erfolgreich")
    else
        debugPrint("^1Datenbank-Verbindung fehlgeschlagen^7")
    end
    
    debugPrint("License-System Server vollständig initialisiert")
end)

-- CLEANUP
AddEventHandler('onResourceStop', function(resourceName)
    if GetCurrentResourceName() == resourceName then
        debugPrint("License-System Server gestoppt")
        licenseCache = {}
    end
end)

-- DEBUG COMMANDS
RegisterCommand('licensestats', function(source, args, rawCommand)
    if source == 0 then -- Console only
        local cacheCount = 0
        for _ in pairs(licenseCache) do
            cacheCount = cacheCount + 1
        end
        
        print("=== LICENSE SYSTEM STATS ===")
        print("Cache Entries: " .. cacheCount)
        print("Config License Types: " .. (Config.LicenseTypes and table.count(Config.LicenseTypes) or 0))
        print("============================")
    end
end, true)

RegisterCommand('licenseclearcache', function(source, args, rawCommand)
    if source == 0 then -- Console only
        local oldCount = 0
        for _ in pairs(licenseCache) do
            oldCount = oldCount + 1
        end
        
        licenseCache = {}
        print("License-Cache geleert. Entfernte Einträge: " .. oldCount)
    end
end, true)

-- Hilfsfunktion für table.count
function table.count(t)
    local count = 0
    for _ in pairs(t) do
        count = count + 1
    end
    return count
end

-- Add to server/main.lua
RegisterNetEvent('license-system:server:reactivateLicense', function(targetId, licenseType)
    local src = source
    debugPrint("=== Event: reactivateLicense ===")
    debugPrint("Source: " .. src .. ", Target: " .. targetId .. ", Type: " .. licenseType)
    
    -- Check if player has permission to reactivate this license type
    local Player = QBCore.Functions.GetPlayer(src)
    if not Player then return end
    
    local job = Player.PlayerData.job.name
    local canReactivate = false
    
    -- Check if job can reactivate this license type
    if Config.ReactivationPermissions and Config.ReactivationPermissions[job] then
        for _, allowedType in ipairs(Config.ReactivationPermissions[job]) do
            if allowedType == licenseType then
                canReactivate = true
                break
            end
        end
    end
    
    if not canReactivate then
        TriggerClientEvent('QBCore:Notify', src, 'Du darfst diesen Lizenztyp nicht reaktivieren!', 'error')
        return
    end
    
    -- Get target player
    local targetPlayer = QBCore.Functions.GetPlayer(targetId)
    if not targetPlayer then
        TriggerClientEvent('QBCore:Notify', src, 'Spieler nicht gefunden!', 'error')
        return
    end
    
    local targetCitizenId = targetPlayer.PlayerData.citizenid
    
    -- Find the most recent license of this type (even if inactive)
    local query = [[
        SELECT * FROM player_licenses 
        WHERE citizenid = ? AND license_type = ? 
        ORDER BY created_at DESC 
        LIMIT 1
    ]]
    
    local result = MySQL.query.await(query, {targetCitizenId, licenseType})
    
    if not result or #result == 0 then
        TriggerClientEvent('QBCore:Notify', src, 'Keine Lizenz dieses Typs gefunden!', 'error')
        return
    end
    
    -- Reactivate the license
    local updateQuery = "UPDATE player_licenses SET is_active = 1 WHERE id = ?"
    local success = MySQL.update.await(updateQuery, {result[1].id})
    
    if success then
        -- Invalidate cache
        invalidateCache(targetCitizenId, licenseType)
        
        local targetName = getPlayerName(targetId)
        local issuerName = getPlayerName(src)
        local config = Config.LicenseTypes[licenseType]
        
        -- Notifications
        TriggerClientEvent('QBCore:Notify', src, 'Lizenz erfolgreich reaktiviert für ' .. targetName, 'success')
        TriggerClientEvent('QBCore:Notify', targetId, 'Deine ' .. (config.label or licenseType) .. ' wurde reaktiviert!', 'success')
        
        -- Events
        TriggerClientEvent('license-system:client:licenseReactivated', src, targetId, licenseType)
        TriggerClientEvent('license-system:client:refreshMenu', src)
        
        -- Log
        debugPrint("Lizenz " .. licenseType .. " reaktiviert von " .. issuerName .. " für " .. targetName)
    else
        TriggerClientEvent('QBCore:Notify', src, 'Fehler beim Reaktivieren der Lizenz!', 'error')
    end
end)

-- Add to client/main.lua
-- Add a reactivation option to the player license menu
local function openReactivateLicenseMenu(targetId, targetName)
    debugPrint("Öffne Lizenz-Reaktivierungs-Menü für: " .. targetName)
    
    -- Request all licenses including inactive ones
    TriggerServerEvent('license-system:server:requestAllPlayerLicenses', targetId, true)
end

-- New event to receive all licenses including inactive ones
RegisterNetEvent('license-system:client:receiveAllPlayerLicenses', function(licenses, targetId, targetName)
    debugPrint("=== Event: receiveAllPlayerLicenses ===")
    debugPrint("Erhaltene Lizenzen: " .. #licenses)
    
    local menuOptions = {}
    
    if licenses and #licenses > 0 then
        for _, license in ipairs(licenses) do
            if license.is_active == 0 then -- Only show inactive licenses
                local licenseConfig = Config.LicenseTypes[license.license_type] or {
                    label = license.license_type,
                    icon = 'fas fa-id-card',
                    color = '#667eea'
                }
                
                table.insert(menuOptions, {
                    title = licenseConfig.label .. ' ❌',
                    description = 'Status: Ungültig | Ausgestellt: ' .. (license.issue_date or 'Unbekannt'),
                    icon = licenseConfig.icon,
                    onSelect = function()
                        -- Confirmation dialog
                        lib.registerContext({
                            id = 'confirm_reactivate_license',
                            title = 'Lizenz reaktivieren bestätigen',
                            options = {
                                {
                                    title = 'Spieler: ' .. targetName,
                                    disabled = true,
                                    icon = 'fas fa-user'
                                },
                                {
                                    title = 'Lizenztyp: ' .. licenseConfig.label,
                                    disabled = true,
                                    icon = licenseConfig.icon
                                },
                                {
                                    title = '─────────────────',
                                    disabled = true
                                },
                                {
                                    title = '✅ Bestätigen',
                                    description = 'Lizenz jetzt reaktivieren',
                                    icon = 'fas fa-check',
                                    onSelect = function()
                                        debugPrint("Sende Lizenz-Reaktivierung an Server...")
                                        TriggerServerEvent('license-system:server:reactivateLicense', targetId, license.license_type)
                                        lib.hideContext()
                                    end
                                },
                                {
                                    title = '❌ Abbrechen',
                                    description = 'Vorgang abbrechen',
                                    icon = 'fas fa-times',
                                    onSelect = function()
                                        openReactivateLicenseMenu(targetId, targetName)
                                    end
                                }
                            }
                        })
                        
                        lib.showContext('confirm_reactivate_license')
                    end
                })
            end
        end
    end
    
    if #menuOptions == 0 then
        table.insert(menuOptions, {
            title = 'Keine inaktiven Lizenzen',
            description = 'Dieser Spieler hat keine inaktiven Lizenzen',
            icon = 'fas fa-exclamation-triangle',
            disabled = true
        })
    end
    
    table.insert(menuOptions, {
        title = '← Zurück',
        icon = 'fas fa-arrow-left',
        onSelect = function()
            openPlayerLicenseMenu(targetId, targetName)
        end
    })
    
    lib.registerContext({
        id = 'reactivate_license',
        title = 'Lizenz reaktivieren: ' .. targetName,
        options = menuOptions
    })
    
    lib.showContext('reactivate_license')
end)

-- Add this option to the player license menu
-- In openPlayerLicenseMenu function, add:
table.insert(menuOptions, {
    title = 'Lizenz reaktivieren',
    description = 'Eine inaktive Lizenz wieder aktivieren',
    icon = 'fas fa-redo',
    onSelect = function()
        openReactivateLicenseMenu(targetId, targetName)
    end
})

-- Add to server/main.lua
RegisterNetEvent('license-system:server:issueManualLicense', function(targetId, licenseData)
    local src = source
    debugPrint("=== Event: issueManualLicense ===")
    debugPrint("Source: " .. src .. ", Target: " .. targetId)
    
    if not hasPermission(src) then
        debugPrint("Keine Berechtigung für Spieler: " .. src)
        TriggerClientEvent('QBCore:Notify', src, Config.Notifications.no_permission.message, Config.Notifications.no_permission.type)
        return
    end
    
    local targetPlayer = QBCore.Functions.GetPlayer(targetId)
    if not targetPlayer then
        debugPrint("Ziel-Spieler nicht gefunden: " .. targetId)
        TriggerClientEvent('QBCore:Notify', src, 'Spieler nicht gefunden!', 'error')
        return
    end
    
    local issuerPlayer = QBCore.Functions.GetPlayer(src)
    if not issuerPlayer then
        debugPrint("Aussteller nicht gefunden: " .. src)
        return
    end
    
    local targetCitizenId = targetPlayer.PlayerData.citizenid
    local issuerCitizenId = issuerPlayer.PlayerData.citizenid
    
    -- Check if license type is valid
    if not Config.LicenseTypes[licenseData.license_type] then
        TriggerClientEvent('QBCore:Notify', src, 'Ungültiger Lizenztyp!', 'error')
        return
    end
    
    -- Save photo if provided
    if licenseData.photo_url then
        -- Here you would save the photo to your storage system
        -- For example, to a folder or database
        -- This is just a placeholder
        debugPrint("Foto für Lizenz vorhanden")
    end
    
    -- Insert into database with manual data
    local query = [[
        INSERT INTO player_licenses 
        (citizenid, license_type, name, birthday, gender, issue_date, expire_date, issued_by, is_active, photo_url, created_at) 
        VALUES (?, ?, ?, ?, ?, ?, ?, ?, 1, ?, ?)
    ]]
    
    local createdAt = os.time()
    
    local insertData = {
        targetCitizenId,
        licenseData.license_type,
        licenseData.name,
        licenseData.birthday,
        licenseData.gender,
        licenseData.issue_date,
        licenseData.expire_date,
        issuerCitizenId,
        licenseData.photo_url or '',
        createdAt
    }
    
    -- First deactivate any existing licenses of this type
    local deactivateQuery = "UPDATE player_licenses SET is_active = 0 WHERE citizenid = ? AND license_type = ?"
    MySQL.query.await(deactivateQuery, {targetCitizenId, licenseData.license_type})
    
    -- Then insert the new license
    local result = MySQL.insert.await(query, insertData)
    
    if result then
        -- Invalidate cache
        invalidateCache(targetCitizenId)
        
        local targetName = getPlayerName(targetId)
        local issuerName = getPlayerName(src)
        local config = Config.LicenseTypes[licenseData.license_type]
        
        -- Notifications
        TriggerClientEvent('QBCore:Notify', src, 'Lizenz erfolgreich ausgestellt für ' .. targetName, 'success')
        TriggerClientEvent('QBCore:Notify', targetId, 'Du hast eine neue Lizenz erhalten: ' .. config.label, 'success')
        
        -- Events
        TriggerClientEvent('license-system:client:licenseIssued', src, targetId, licenseData.license_type)
        TriggerClientEvent('license-system:client:refreshMenu', src)
        
        -- Log
        debugPrint("Lizenz " .. licenseData.license_type .. " manuell ausgestellt von " .. issuerName .. " für " .. targetName)
    else
        TriggerClientEvent('QBCore:Notify', src, 'Fehler beim Ausstellen der Lizenz!', 'error')
    end
end)

-- Add a new event to get all licenses including inactive ones
RegisterNetEvent('license-system:server:requestAllPlayerLicenses', function(targetId, includeInactive)
    local src = source
    debugPrint("=== Event: requestAllPlayerLicenses ===")
    debugPrint("Source: " .. src .. ", Target: " .. targetId .. ", IncludeInactive: " .. tostring(includeInactive))
    
    if not hasPermission(src) then
        debugPrint("Keine Berechtigung für Spieler: " .. src)
        TriggerClientEvent('license-system:client:receiveAllPlayerLicenses', src, {}, targetId, "Unbekannt")
        return
    end
    
    local targetPlayer = QBCore.Functions.GetPlayer(targetId)
    if not targetPlayer then
        debugPrint("Ziel-Spieler nicht gefunden: " .. targetId)
        TriggerClientEvent('license-system:client:receiveAllPlayerLicenses', src, {}, targetId, "Unbekannt")
        return
    end
    
    local citizenid = targetPlayer.PlayerData.citizenid
    local targetName = getPlayerName(targetId)
    
    -- Query to get all licenses, including inactive ones if requested
    local query = "SELECT * FROM player_licenses WHERE citizenid = ? ORDER BY license_type, created_at DESC"
    
    local result = MySQL.query.await(query, {citizenid})
    
    if not result or #result == 0 then
        debugPrint("Keine Lizenzen gefunden für: " .. citizenid)
        TriggerClientEvent('license-system:client:receiveAllPlayerLicenses', src, {}, targetId, targetName)
        return
    end
    
    -- Process licenses
    local licenses = {}
    local seenTypes = {}
    
    for _, license in ipairs(result) do
        -- If includeInactive is true, add all licenses
        -- Otherwise, only add the newest license per type
        local shouldAdd = includeInactive or not seenTypes[license.license_type]
        
        if shouldAdd then
            seenTypes[license.license_type] = true
            
            -- Add holder name
            license.holder_name = targetName
            
            -- Add issuer name
            if license.issued_by then
                local issuerQuery = "SELECT charinfo FROM players WHERE citizenid = ?"
                local issuerResult = MySQL.query.await(issuerQuery, {license.issued_by})
                
                if issuerResult and #issuerResult > 0 then
                    license.issued_by_name = extractPlayerName(issuerResult[1].charinfo)
                else
                    license.issued_by_name = "System"
                end
            else
                license.issued_by_name = "System"
            end
            
            -- Parse classes
            if license.classes then
                local success, classes = pcall(json.decode, license.classes)
                if success and type(classes) == "table" then
                    license.classes = classes
                else
                    license.classes = {}
                end
            else
                license.classes = {}
            end
            
            -- Normalize is_active
            if license.is_active == nil then
                license.is_active = 1
            end
            
            table.insert(licenses, license)
        end
    end
    
    debugPrint("Sende " .. #licenses .. " Lizenzen für " .. targetName)
    TriggerClientEvent('license-system:client:receiveAllPlayerLicenses', src, licenses, targetId, targetName)
end)


debugPrint("License-System Server vollständig geladen (Status-Fix)")