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addons/vyhub-gmod/lua/vyhub/server/sv_cache.lua

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+--[[
+| This file was obtained through the combined efforts
+| of Madbluntz & Plymouth Antiquarian Society.
+|
+| Credits: lifestorm, Gregory Wayne Rossel JR.,
+| 	Maloy, DrPepper10 @ RIP, Atle!
+|
+| Visit for more: https://plymouth.thetwilightzone.ru/
+--]]
+
+local f = string.format
+local json = VyHub.Lib.json
+
+VyHub.Cache = VyHub.Cache or {}
+
+function VyHub.Cache:save(key, value)
+    local data = {
+        timestamp = os.time(),
+        data = value
+    }
+
+    local filename = f("vyhub/%s.json", key)
+    local json = json.encode(data)
+
+    VyHub:msg("Write " .. filename .. ": " .. json, "debuga")
+
+    file.Write(filename, json)
+end
+
+function VyHub.Cache:get(key, max_age)
+    local path = f("vyhub/%s.json", key)
+
+    if not file.Exists(path, "data") then
+        return nil
+    end
+
+    local data_str = file.Read(path, "data")
+
+    if not string.Trim(data_str) then
+        return nil
+    end
+
+    local success, data = pcall(json.decode, data_str)
+
+    if not success then
+        return nil
+    end
+
+    if istable(data) and data.timestamp and data.data then
+        if max_age != nil and os.time() - data.timestamp > max_age then
+            return nil
+        end
+
+        return data.data
+    end
+
+    return nil
+end