local plugin = PluginManager():CreatePlugin()
local toolbar = plugin:CreateToolbar("Script Obfuscator")
local button = toolbar:CreateButton(
    "",
    "Format selected script.",
    "script_link.png"
)

function GetReplacement()
    local s = ""
    for i = 1, math.random(6,20) do
        s = s .. string.char(math.random(65,90)) --97,123 lowercase
    end
    return s
end

function GetFiller()
    local s = " --[===["
    for i = 1, math.random(7, 50) do
        s = s .. string.char(math.random(1,9)) .. string.char(math.random(11, 28))--string.char(math.random(1,255))
    end
    s = s .. "]===]"
    return s .. ""
end

function RebuildSource(source, ending)
    local tab = [[local StringConstants = {]]
    local index = 1
    if source:find("--", 1, true) then
        print("Source uses '--' symbols (if there are comments, please remove them from the source). Cannot obfuscate.", 0)
        return
    end
    for String in source:gmatch("%[%[.-%]%]") do
        tab = tab .. String .. ";"
        source = source:gsub("%[%[" .. String:sub(3, #String-2) .. "%]%]", "StringConstants[" .. index .. "]")
        index = index + 1
    end
    for String in source:gmatch('%[".-"%]') do
        tab = tab .. String:sub(2, #String-1) .. ";"
        source = source:gsub('%["' .. String:sub(3, #String-2) .. '"%]', "[StringConstants[" .. index .. "]]")
        index = index + 1
    end
    for String in source:gmatch('".-"') do
        tab = tab .. String .. ";"
        source = source:gsub(String, "StringConstants[" .. index .. "]")
        index = index + 1
    end
    for String in source:gmatch("'.-'") do
        tab = tab .. String .. ";"
        source = source:gsub(String, "StringConstants[" .. index .. "]")
        index = index + 1
    end
    tab = tab .. [[}]]
    source = source:gsub(" ", GetFiller)
    return tab .. "\n" .. source .. ending
end

function ObfuscateSource(_s)
    --print("Now attempting to obfuscate selected script...")
    local library = {}
    local c = _s.Source -- Cache a copy.
    local x = _s.Source -- Copy in use.
    -------------------------------------------------------------------------------------------
    for fType in x:gmatch("(function %a+%(%))") do
        local replacement = GetReplacement()
        local varName = fType:sub(10, #fType-2)
        print(varName)
        if #varName > 5 then
            library[varName] = replacement
            x = x:gsub(fType, "function " .. replacement)
        end
    end
    for fCall in x:gmatch("(%a+)%(%)") do
        if library[fCall] then
            x = x:gsub(fCall .. [[()]], library[fCall])
        end
    end
    -------------------------------------------------------------------------------------------
    for lType in x:gmatch("(local %a+)") do
        local replacement = GetReplacement()
        local varName = lType:sub(7)
        if #varName > 4 then
            library[varName] = replacement
            x = x:gsub(lType, "local " .. replacement)
        end
    end
    for each in x:gmatch("(%a*)") do
        if library[each] then
            x = x:gsub(each, library[each])
        end
    end
    _s.Source = RebuildSource(x,'\n \n \n--[===[This is a copy of the original source. Delete if unneeded. \n' .. c .. '\n]===]') or c
end
button.Click:connect(function()
    local s = Game.Selection:Get()[1]
    if s then
        if s:IsA("Script") then
            ObfuscateSource(s)
        elseif s:IsA("Workspace") then
            Instance.new("Script", Workspace).Source = [==[
            local b = 5
            local bad = 2
            local abd = 5
            local s = 8
            local isUse = true
            local canReplace = false
            local UsarVar = 'Ending of the index'
            local tVariable = [[Essence of the var ]]

            function Hit()

            end

            Hit()

            function Available()

            end

            Available()

            print(b + bad + abd)
            print("Hello world!")
            ]==]
        else
            print("Object selected is not a script, or there are more than one selected objects.")
        end
    else
        print("No object selected!")
    end
end)