-- server/gang_ff.lua
print("^2[turfwar]^7 server/gang_ff.lua loaded (server-side same-gang FF block)")

-- Requires PlayerGang to be GLOBAL (see patch in server/main.lua)
PlayerGang = PlayerGang or {}

local function gangOf(src)
    return tonumber(PlayerGang[src]) or 0
end

local function sameGangNonNeutral(a, b)
    local ga = gangOf(a)
    local gb = gangOf(b)
    return ga ~= 0 and ga == gb
end

-- Helper: resolve victim player from weaponDamageEvent payload
local function resolveVictimPlayerFromWeaponData(data)
    if not data then return nil end

    -- Different builds/resources may use different keys; try common ones
    local netId =
        data.hitGlobalId or
        data.hitEntity or
        data.hitNetId or
        data.entity or
        data.victimNetId

    if type(netId) ~= "number" then return nil end

    local ent = NetworkGetEntityFromNetworkId(netId)
    if not ent or ent == 0 or not DoesEntityExist(ent) then return nil end

    if not IsEntityAPed(ent) then return nil end
    if not IsPedAPlayer(ent) then return nil end

    -- For player peds, owner should be that player’s source
    local victimSrc = NetworkGetEntityOwner(ent)
    if not victimSrc or victimSrc == 0 then return nil end

    return victimSrc
end

-- Blocks bullets/melee/etc
AddEventHandler("weaponDamageEvent", function(sender, data)
    -- sender is attacker (source)
    if not sender or sender == 0 then return end

    local victimSrc = resolveVictimPlayerFromWeaponData(data)
    if not victimSrc then return end

    if sameGangNonNeutral(sender, victimSrc) then
        CancelEvent()
        -- Uncomment for debug:
        -- print(("[turfwar_ff] BLOCK weaponDamageEvent: %s -> %s gang=%s"):format(sender, victimSrc, gangOf(sender)))
    end
end)

-- Blocks explosions (grenades, rockets, etc)
AddEventHandler("explosionEvent", function(sender, ev)
    if not sender or sender == 0 then return end
    if not ev then return end

    -- explosionEvent has a 'pos' and can have 'ownerNetId' etc; there isn't always a single victim.
    -- But it can still stop friendly grenade spam within gang by blocking the explosion entirely.
    -- If you don't use explosives, you can remove this handler.
    local attackerGang = gangOf(sender)
    if attackerGang == 0 then return end

    -- If you want to allow explosives vs other gangs but still protect same-gang,
    -- you’d need per-victim explosion damage (not provided directly here).
    -- So we leave explosives allowed by default.
end)