How would I go about randomly giving a weapon to a user on pointshop purchase

[fappymcfap]

Could you simply guide me on what to use? I'd like to try to code it myself.
Could I simply make a table with the weapon class names, randomize it with math.random, use tonumber and use Give()?
I'm trying to create this in /garrysmod/gamemodes/terrortown/entities/weapons which will randomize the weapon, and use that weapon class for the pointshop.

[fappymcfap]

Here's my crappy attempt at it.

/garrysmod/gamemodes/terrortown/entities/weapons

SWEP.UseHands			= true
SWEP.ViewModelFlip		= false

local randomweps = {
	["M16"] = "weapon_ttt_m16",
	["Pump Shotgun"] = "weapon_ttt_pump",
	["Rifle"] = "weapon_zm_rifle"

}

for _, class in pairs(randomweps) do 
	--local ply = self.GetOwner()
	print(_)
	print(class)
--	ply:Give(class)
	break
end

pointshop file:

ITEM.Name = 'Random Perma Primary (test)'
ITEM.Price = 2000000
ITEM.Model = 'models/props_junk/GlassBottle01a.mdl'
ITEM.WeaponClass = 'permweapon'
ITEM.SingleUse = false

function ITEM:OnBuy(ply)
	ply:Give(self.WeaponClass)
end

function ITEM:OnEquip(ply)
	ply:Give(self.WeaponClass)
end

function ITEM:OnHolster(ply)
	ply:StripWeapon(self.WeaponClass)
end

function ITEM:OnSell(ply)
	ply:StripWeapon(self.WeaponClass)
end

function ITEM:PlayerSpawn(ply)
    ply:Give(self.WeaponClass)
end

Now for the first file it'll print out a weapon but when I uncomment those lines I get:

[ERROR] gamemodes/terrortown/entities/weapons/permweapon.lua:15: attempt to index global 'ply' (a nil value)
1. fn - gamemodes/terrortown/entities/weapons/permweapon.lua:15
2. unknown - addons/ulib/lua/ulib/shared/hook.lua:110
3. Spawn - [C]:-1
4. SpawnForRound - gamemodes/terrortown/gamemode/player_ext.lua:295
5. SpawnWillingPlayers - gamemodes/terrortown/gamemode/init.lua:564
6. unknown - gamemodes/terrortown/gamemode/init.lua:415

Also, I'll add that it'll spam the print on round start so I'm guessing it's thinking every player gets it.

[iJohnny]

You can try something like this

ITEM.Name = 'Random Perma Primary (test)'
ITEM.Price = 2000000
ITEM.Model = 'models/props_junk/GlassBottle01a.mdl'
ITEM.SingleUse = true

// Contents pointshop file names (ITEM.IDs) not weapon classes
ITEM.Contents = {
	"weapon1",
	"weapon2",
	"weapon3",
	"weapon4"
}

function ITEM:CanPlayerBuy(ply)
	for _, weapon in pairs(self.Contents) do
		if not ply:PS_HasItem(weapon) then
			return true
		end
	end
	return false
end

function ITEM:OnBuy(ply)
	local randomedContents = table.sort(self.Contents, function(a, b) return math.random(0, 1) > 0.5 end)

	for _, weapon in pairs(randomedContents) do
		if not ply:PS_HasItem(weapon) then
			ply:PS_GiveItem(weapon)
			ply:PS_EquipItem(weapon)
			return
		end
	end
end

[fappymcfap]

[QUOTE=iJohnny;51646659]You can try something like this

ITEM.Name = 'Random Perma Primary (test)'
ITEM.Price = 2000000
ITEM.Model = 'models/props_junk/GlassBottle01a.mdl'
ITEM.SingleUse = true

// Contents pointshop file names (ITEM.IDs) not weapon classes
ITEM.Contents = {
	"weapon1",
	"weapon2",
	"weapon3",
	"weapon4"
}

function ITEM:CanPlayerBuy(ply)
	for _, weapon in pairs(self.Contents) do
		if not ply:PS_HasItem(weapon) then
			return true
		end
	end
	return false
end

function ITEM:OnBuy(ply)
	local randomedContents = table.sort(self.Contents, function(a, b) return math.random(0, 1) > 0.5 end)

	for _, weapon in pairs(randomedContents) do
		if not ply:PS_HasItem(weapon) then
			ply:PS_GiveItem(weapon)
			ply:PS_EquipItem(weapon)
			return
		end
	end
end

[/QUOTE]

Would it be possible with weapon classes? I don't have any weapons in the pointshop at the moment. Or if there's a way to somehow "hide" it from the pointshop I can do that so it registers the ID's.
Edit: Nvm I'll make a hidden category.

Either way, thank you. I'll try it out in a bit.

Edit 2: Hmm Nothing happens when purchasing/equipping this.
Also I noticed it gives a random weapon in the pointshop, I meant a random weapon class on spawn with it but I like the idea and I prefer that one haha