-- server/leaderboard.lua
print("^2[turfwar]^7 server/leaderboard.lua LOADED")

-- We assume Turfs runtime table exists in server/main.lua as `local Turfs = {}`
-- and Config.GANGS exists.
-- We will be defensive: if Turfs isn't visible here, we’ll use an exported getter you can add (optional).

local function getTurfsRuntime()
    -- If Turfs is global somewhere, use it.
    if Turfs then return Turfs end

    -- If Turfs is local in main.lua (as in your paste), this file cannot see it.
    -- In that case, you must either:
    --  A) Move leaderboard code into server/main.lua, OR
    --  B) Make Turfs global in main.lua: change `local Turfs = {}` to `Turfs = {}`
    return nil
end

local function buildLeaderboard()
    local t = getTurfsRuntime()
    if not t then
        return {
            title = "Most influence",
            rows = {},
            error = "Turfs runtime not visible. In server/main.lua change `local Turfs = {}` to `Turfs = {}`."
        }
    end

    -- count owned turfs per gang
    local counts = {} -- [gangId] = n
    for _, turf in pairs(t) do
        local owner = tonumber(turf.owner) or 0
        if owner ~= 0 then
            counts[owner] = (counts[owner] or 0) + 1
        end
    end

    -- build sortable rows
    local rows = {}
    for gangId, info in pairs(Config.GANGS or {}) do
        gangId = tonumber(gangId) or 0
        if gangId ~= 0 then
            local c = counts[gangId] or 0
            rows[#rows + 1] = {
                gangId = gangId,
                name = info.name or ("Gang " .. tostring(gangId)),
                value = c
            }
        end
    end

    table.sort(rows, function(a, b)
        if a.value == b.value then
            return a.name < b.name
        end
        return a.value > b.value
    end)

    -- Keep only gangs that exist in config; you can also filter out zeroes if you want:
    -- (comment in if you only want gangs with >0)
    -- local filtered = {}
    -- for _, r in ipairs(rows) do if r.value > 0 then filtered[#filtered+1]=r end end
    -- rows = filtered

    return {
        title = "Most influence",
        rows = rows
    }
end

local function broadcastLeaderboard()
    local payload = buildLeaderboard()
    TriggerClientEvent("turfwar:leaderboard:update", -1, payload)
end

-- Clients can request snapshot
RegisterNetEvent("turfwar:leaderboard:request", function()
    local src = source
    TriggerClientEvent("turfwar:leaderboard:update", src, buildLeaderboard())
end)

-- Let other server code trigger refresh
RegisterNetEvent("turfwar:leaderboard:refresh", function()
    broadcastLeaderboard()
end)

-- Export for other resources if needed
exports("BroadcastLeaderboard", broadcastLeaderboard)