local base64 = require("vendor.base64")
local json = require("vendor.JSON")
local table_unpack = table.unpack or unpack

local function base64_dec(x)
    local succ, dec = pcall(base64.decode, x)
    if succ then return dec end
end

local function json_dec(x)
    local succ, dec = pcall(json.decode, json, x)
    if succ then return dec end
end

local function json_enc(x)
    return json:encode(x)
end

local mkdir, rand_string

if love then
    rand_string = function(n)
        local b = {}
        for i = 1, n do
            table.insert(b, love.math.random(0, 255))
        end
        return string.char(table_unpack(b))
    end
    mkdir = love.filesystem.mkdir
else
    local rand_file
    rand_string = function(n)
        local rand_file = rand_file or io.open("/dev/random")
        return rand_file:read(n)
    end
    -- awful
    mkdir = function(x)
        local status = os.execute("mkdir -p " .. x)
        return status == true
    end
end

return {
    rand_string = rand_string,
    mkdir = mkdir,
    base64_dec = base64_dec,
    base64_enc = base64.encode,
    json_dec = json_dec,
    json_enc = json_enc,
}