objectStore.lua

local serializer = require("serializer")
local filesystem = require("component").filesystem
local ensuredDirExists = false

local objectstore = {
  baseDir = "/usr/objectstore"
}

local function ensureDirExists()
  if not ensuredDirExists then
    filesystem.makeDirectory(objectstore.baseDir)
    ensuredDirExists = true
  end
end

function objectstore.saveObject(name, obj)
  if filesystem == nil then
    return false
  end
  ensureDirExists()
  return serializer.serializeToFile(objectstore.baseDir .. "/" .. name, obj)
end

function objectstore.loadObject(name)
  if filesystem == nil then
    return nil
  end
  ensureDirExists()
  local status, lines = pcall(function() return io.lines(objectstore.baseDir .. "/" .. name) end)
  if not status then return false end

  return serializer.deserializeLines(lines)
end

function objectstore.deleteObject(name)
  if filesystem == nil then
    return nil
  end
  filesystem.remove(objectstore.baseDir .. "/" .. name)
end

return objectstore