-- ═══════════════════════════════════════════════════════════════
--  MercyV Bike  –  Server
-- ═══════════════════════════════════════════════════════════════

local ESX = nil

Citizen.CreateThread(function()
    if Config.NewESX then
        ESX = exports['es_extended']:getSharedObject()
    end
end)

local function GetIdentifier(src)
    local xp = ESX and ESX.GetPlayerFromId(src)
    return xp and xp.identifier or nil
end

local function IsAdmin(src)
    if IsPlayerAceAllowed(src, Config.AdminAce) then return true end
    if ESX then
        local xp = ESX.GetPlayerFromId(src)
        if xp then
            local g = xp.getGroup()
            if g == "admin" or g == "superadmin" then return true end
        end
    end
    return false
end

-- ── Tabelle erstellen ──────────────────────────────────────────

AddEventHandler('onResourceStart', function(res)
    if res ~= GetCurrentResourceName() then return end
    Wait(1000)
    MySQL.query.await([[
        CREATE TABLE IF NOT EXISTS `mercyv_bike_claims` (
            `identifier` VARCHAR(120) NOT NULL,
            `bike_model` VARCHAR(60) NOT NULL,
            `claimed_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
            PRIMARY KEY (`identifier`)
        ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4
    ]])
    print('^2[mercyv-bike]^0 Tabelle bereit.')
end)

-- ── NPC-Position synchronisieren ──────────────────────────────

local NPCData = nil  -- wird aus DB oder Config geladen

AddEventHandler('onResourceStart', function(res)
    if res ~= GetCurrentResourceName() then return end
    Wait(1500)
    -- NPC-Position aus DB laden falls gespeichert
    local r = MySQL.query.await("SELECT * FROM mercyv_bike_npc LIMIT 1")
    if r and r[1] then
        NPCData = r[1]
    else
        NPCData = {
            model   = Config.NPC.model,
            x       = Config.NPC.x,
            y       = Config.NPC.y,
            z       = Config.NPC.z,
            heading = Config.NPC.heading,
        }
    end
    -- NPC-Tabelle anlegen falls nicht vorhanden
    MySQL.query.await([[
        CREATE TABLE IF NOT EXISTS `mercyv_bike_npc` (
            `id`      INT AUTO_INCREMENT PRIMARY KEY,
            `model`   VARCHAR(100) DEFAULT 'a_m_m_beach_01',
            `x`       FLOAT DEFAULT 0,
            `y`       FLOAT DEFAULT 0,
            `z`       FLOAT DEFAULT 0,
            `heading` FLOAT DEFAULT 0
        ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4
    ]])
    TriggerClientEvent('mercyv-bike:syncNPC', -1, NPCData)
    print('^2[mercyv-bike]^0 NPC-Daten geladen.')
end)

-- ── Client ready ───────────────────────────────────────────────

RegisterNetEvent('mercyv-bike:clientReady', function()
    local src = source
    Citizen.CreateThread(function()
        Wait(500)
        TriggerClientEvent('mercyv-bike:syncNPC', src, NPCData)
        Wait(200)
        TriggerClientEvent('mercyv-bike:setAdminStatus', src, IsAdmin(src))
    end)
end)

RegisterNetEvent('mercyv-bike:checkAdmin', function()
    TriggerClientEvent('mercyv-bike:setAdminStatus', source, IsAdmin(source))
end)

-- ── Fahrrad abholen ────────────────────────────────────────────

RegisterNetEvent('mercyv-bike:claim', function(bikeModel)
    local src        = source
    local identifier = GetIdentifier(src)
    if not identifier then return end

    -- Prüfen ob bereits eines abgeholt
    local existing = MySQL.query.await(
        'SELECT identifier FROM mercyv_bike_claims WHERE identifier = ?',
        { identifier }
    )
    if existing and existing[1] then
        Config.ServerNotification(src, Config.Notify.ALREADY_CLAIMED, "error")
        return
    end

    -- Eintragen
    MySQL.insert(
        'INSERT INTO mercyv_bike_claims (identifier, bike_model) VALUES (?, ?)',
        { identifier, bikeModel }
    )

    -- Spawn-Signal
    TriggerClientEvent('mercyv-bike:doSpawn', src, bikeModel)
    Config.ServerNotification(src, Config.Notify.CLAIMED, "success")
    print(string.format('[mercyv-bike] %s hat %s erhalten.', identifier, bikeModel))
end)

-- ── Prüfen ob Spieler bereits eines hat ───────────────────────

RegisterNetEvent('mercyv-bike:checkClaim', function()
    local src        = source
    local identifier = GetIdentifier(src)
    if not identifier then
        TriggerClientEvent('mercyv-bike:claimStatus', src, false)
        return
    end
    local r = MySQL.query.await(
        'SELECT bike_model FROM mercyv_bike_claims WHERE identifier = ?',
        { identifier }
    )
    TriggerClientEvent('mercyv-bike:claimStatus', src, r and r[1] ~= nil, r and r[1] and r[1].bike_model)
end)

-- ── Admin: NPC-Position speichern ─────────────────────────────

RegisterNetEvent('mercyv-bike:saveNPC', function(data)
    local src = source
    if not IsAdmin(src) then
        Config.ServerNotification(src, Config.Notify.NO_ACCESS, "error")
        return
    end

    NPCData = data

    -- In DB speichern
    local existing = MySQL.query.await('SELECT id FROM mercyv_bike_npc LIMIT 1')
    if existing and existing[1] then
        MySQL.update('UPDATE mercyv_bike_npc SET model=?, x=?, y=?, z=?, heading=? WHERE id=?',
            { data.model, data.x, data.y, data.z, data.heading, existing[1].id })
    else
        MySQL.insert('INSERT INTO mercyv_bike_npc (model, x, y, z, heading) VALUES (?, ?, ?, ?, ?)',
            { data.model, data.x, data.y, data.z, data.heading })
    end

    TriggerClientEvent('mercyv-bike:syncNPC', -1, NPCData)
    Config.ServerNotification(src, "NPC-Position gespeichert.", "success")
end)

-- ── Benachrichtigung ──────────────────────────────────────────

RegisterNetEvent('mercyv-bike:notify', function(msg, type)
    -- Wird clientseitig behandelt
end)

-- ── Admin: Claim zurücksetzen ─────────────────────────────────

RegisterCommand('bikereset', function(src, args)
    if not IsAdmin(src) then return end
    local targetId = tonumber(args[1])
    if not targetId then
        print('[mercyv-bike] Verwendung: /bikereset [Spieler-ID]')
        return
    end
    local xp = ESX and ESX.GetPlayerFromId(targetId)
    if not xp then return end
    MySQL.update('DELETE FROM mercyv_bike_claims WHERE identifier = ?', { xp.identifier })
    Config.ServerNotification(src, 'Claim von Spieler ' .. targetId .. ' zurückgesetzt.', 'success')
    Config.ServerNotification(targetId, 'Dein Fahrrad-Claim wurde zurückgesetzt.', 'info')
end, false)