From: jingkaimori <jingkaimori@gmail.com>

---
 doc/api.md | 99 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 init.lua   |  9 -----
 2 files changed, 99 insertions(+), 9 deletions(-)
 create mode 100644 doc/api.md

diff --git a/doc/api.md b/doc/api.md
new file mode 100644
index 0000000..012d882
--- /dev/null
+++ b/doc/api.md
@@ -0,0 +1,99 @@
+# Digiline interface
+
+## get shop status
+
+
+
+```lua
+digiline_send('channel', {
+        type='get'
+    }
+)
+```
+
+response from shop looks like this:
+
+```lua
+{
+               offer = {
+                {
+                        give_count = 4,
+                        pay_count = 3,
+                        pay = "basenodes:cobble",
+                        stock = 0,
+                        give = "basenodes:dirt",
+                        pay_price = 0
+                },
+                {
+                        give_count = 25,
+                        pay_count = 1,
+                        pay = "currency:minegeld_10",
+                        stock = 1,
+                        give = "digilines:lcd",
+                        pay_price = 0.4
+                },
+                {
+                        give_count = 12,
+                        pay_count = 3,
+                        pay = "currency:minegeld_10",
+                        stock = 4,
+                        give = "digilines:lcd",
+                        pay_price = 2.5
+                },
+                {
+                        give_count = 9,
+                        pay_count = 3,
+                        pay = "currency:minegeld_10",
+                        stock = 5,
+                        give = "digilines:lcd",
+                        pay_price = 3.3333333333333
+                }
+        },
+        inventory = {
+                {
+                        meta = {
+
+                        },
+                        metadata = "",
+                        count = 25,
+                        name = "digilines:lcd",
+                        wear = 0
+                },
+                [5] = {
+                        meta = {
+
+                        },
+                        metadata = "",
+                        count = 3,
+                        name = "currency:minegeld_10",
+                        wear = 0
+                },
+                [28] = {
+                        meta = {
+                                palette_index = "0"
+                        },
+                        metadata = "",
+                        count = 1,
+                        name = "testnodes:mesh_colorwallmounted",
+                        wear = 0
+                }
+        }
+}
+```
+
+
+
+## set shop offer
+
+following program will set third slot of offer, then this slot will
receive three cobble for four dirt
+
+```lua
+digiline_send('channel', {
+        type='set',
+        offer={
+            [3] =
{give="basenodes:dirt",give_count=4,pay="basenodes:cobble",pay_count=3}
+        }
+    }
+)
+```
+
diff --git a/init.lua b/init.lua
index fef198c..28b2c94 100644
--- a/init.lua
+++ b/init.lua
@@ -479,7 +479,6 @@ minetest.register_node("smartshop:shop", {
                                                                if
type(current_offer)=='table' and current_offer.give and
current_offer.pay then

 local give_item = ItemStack(current_offer.give);

 local pay_item = ItemStack(current_offer.pay);
-
 print(give_item:get_name())

 if minetest.registered_items[give_item:get_name()] and
minetest.registered_items[pay_item:get_name()]  then

         if type(current_offer.give_count) == "number"  then


give_item:set_count(math.floor(current_offer.give_count))
@@ -494,14 +493,6 @@ minetest.register_node("smartshop:shop", {
                                                        end
                                                end
                                        end
-
-                                       -- if event.type == 'digiline' then
-                                       --      print(event.channel)
-                                       --      print(event.msg)
-                                       -- else
-                                       --      digiline.send('b',{type='ask'});
-
-                                       -- end
                                end
                        }
        },
--
2.33.1.windows.1