Add nic format option for json response (#17)

BuckarooBanzay · web-flow · commit 126aa826bf88 · 2021-06-06T17:21:31.000+10:00
* add nic option config for json response and headers

* remove header stuff

Co-authored-by: BuckarooBanzay &lt;BuckarooBanzay@users.noreply.github.com&gt;
diff --git a/docs/nic.txt b/docs/nic.txt
@@ -1,2 +1,33 @@
 How to use the NIC:
 Send a digilines signal with the URL you want to download. The HTTPRequestResult table will be sent back on the same channel.
+
+# Examples
+
+## GET request with a plain url
+```lua
+-- request
+digiline_send("nic", "http://example.com")
+-- response
+event.msg = {
+	code = 200,
+	succeeded = true,
+	data = "<html></html>"
+}
+```
+
+## GET request with parsed json response
+```lua
+-- request
+digiline_send("nic", {
+	url = "http://example.com",
+	parse_json = true
+})
+-- response
+event.msg = {
+	code = 200,
+	succeeded = true,
+	data = {
+		my = "data"
+	}
+}
+```
diff --git a/nic.lua b/nic.lua
@@ -48,13 +48,30 @@ minetest.register_node("digistuff:nic", {
 			action = function(pos,node,channel,msg)
 					local meta = minetest.get_meta(pos)
 					if meta:get_string("channel") ~= channel then return end
-					if type(msg) ~= "string" then return end
+					local url
+					local parse_json = false
+					-- parse message
+					if type(msg) == "string" then
+						-- simple string data
+						url = msg
+					elseif type(msg) == "table" and type(msg.url) == "string" then
+						-- config object
+						url = msg.url
+						parse_json = msg.parse_json
+					else
+						-- not supported
+						return
+					end
 					http.fetch({
-						url = msg,
-						timeout = 5,
-						user_agent = "Minetest Digilines Modem",
+							url = url,
+							timeout = 5,
+							user_agent = "Minetest Digilines Modem"
 						},
 						function(res)
+							if type(res.data) == "string" and parse_json then
+								-- parse json data and replace payload
+								res.data = minetest.parse_json(res.data)
+							end
 							digilines.receptor_send(pos, digilines.rules.default, channel, res)
 						end)
 				end
