techage smartshop compatibitlity

mod.conf

@@ -1,6 +1,6 @@
 name = tech_additions
 description = Adds some block and recipes.
 depends = default, techage
-optional_depends = bbq, bonemeal, craft_ingredients, ethereal, farming
+optional_depends = bbq, bonemeal, craft_ingredients, ethereal, farming, smartshop
 min_minetest_version = 5.7
 title = Tech additions

techage.lua

@@ -68,3 +68,55 @@ techage.add_grinder_recipe({input="default:ice", output="default:snow 3"})
 
 --add extra sieving
 dofile(minetest.get_modpath("tech_additions") .. "/sieving.lua")
+
+local OwnerCache = {}
+
+local function is_owner(pos, meta)
+    local owner = meta:get_string("owner")
+    local key = minetest.hash_node_position(pos)
+    if OwnerCache[key] ~= owner then
+        if not minetest.is_protected(pos, owner) then
+            OwnerCache[key] = owner
+        end
+    end
+    return OwnerCache[key] == owner
+end
+
+if smartshop then
+    techage.register_node(
+        {
+            "smartshop:shop",
+            "smartshop:shop_full",
+            "smartshop:shop_empty",
+            "smartshop:shop_used",
+            "smartshop:storage",
+            "smartshop:storage_lacks_refill",
+            "smartshop:storage_has_send"
+        },
+        {
+            on_inv_request = function(pos, in_dir, access_type)
+                local meta = minetest.get_meta(pos)
+                if is_owner(pos, meta) then
+                    return meta:get_inventory(), "main"
+                end
+            end,
+            on_pull_item = function(pos, in_dir, num)
+                local meta = minetest.get_meta(pos)
+                if is_owner(pos, meta) then
+                    local inv = meta:get_inventory()
+                    return techage.get_items(pos, inv, "main", num)
+                end
+            end,
+            on_push_item = function(pos, in_dir, stack)
+                local meta = minetest.get_meta(pos)
+                local inv = meta:get_inventory()
+                return techage.put_items(inv, "main", stack)
+            end,
+            on_unpull_item = function(pos, in_dir, stack)
+                local meta = minetest.get_meta(pos)
+                local inv = meta:get_inventory()
+                return techage.put_items(inv, "main", stack)
+            end,
+        }
+    )
+end