# HG changeset patch
# User Kim Alvefur <zash@zash.se>
# Date 1554048612 -7200
# Node ID ea1edd7cfb0161a6f45839c6c4491e49592b64f6
# Parent  d94875c3ddda5443fe2b7f416d9a5e36bb1d8be8
mod_pubsub_github: Add support for publishing to multiple node based on repository

diff -r d94875c3ddda -r ea1edd7cfb01 mod_pubsub_github/README.markdown
--- a/mod_pubsub_github/README.markdown	Sun Mar 31 18:08:50 2019 +0200
+++ b/mod_pubsub_github/README.markdown	Sun Mar 31 18:10:12 2019 +0200
@@ -20,18 +20,31 @@
     Component "pubsub.example.com" "pubsub"
         modules_enabled = { "pubsub_github" }
 
+The URL for Github to post to would be either:
+
+-   `http://pubsub.example.com:5280/pubsub_github`
+-   `https://pubsub.example.com:5281/pubsub_github`
+
 The module also takes the following config options:
 
   Name                    Default             Description
   ----------------------- ------------------- ------------------------------------------------------------
   `github_node`           `"github"`{.lua}    The pubsub node to publish commits on.
   `github_secret`         **Required**        Shared secret used to sign HTTP requests.
+  `github_node_prefix`    `"github/"`{.lua}
+  `github_node_mapping`   *not set*           Field in repository object to use as node instead of `github_node`
   `github_actor`          *superuser*         Which actor to do the publish as (used for access control)
 
-The URL for Github to post to would be either:
+More advanced example
 
--   http://pubsub.example.com:5280/pubsub\_github
--   https://pubsub.example.com:5281/pubsub\_github
+``` {.lua}
+Component "pubsub.example.com" "pubsub"
+    modules_enabled = { "pubsub_github" }
+    github_actor = "github.com"
+    github_node_mapping = "name" --> github_node_prefix .. "repo"
+    -- github_node_mapping = "full_name" --> github_node_prefix .. "owner/repo"
+    github_secret = "sekr1t"
+```
 
 If your HTTP host doesn't match the pubsub component's address, you will
 need to inform Prosody. For more info see Prosody's [HTTP server
diff -r d94875c3ddda -r ea1edd7cfb01 mod_pubsub_github/mod_pubsub_github.lua
--- a/mod_pubsub_github/mod_pubsub_github.lua	Sun Mar 31 18:08:50 2019 +0200
+++ b/mod_pubsub_github/mod_pubsub_github.lua	Sun Mar 31 18:10:12 2019 +0200
@@ -5,7 +5,9 @@
 local hmac_sha1 = require "util.hashes".hmac_sha1;
 
 local pubsub_service = module:depends("pubsub").service;
-local node = module:get_option("github_node", "github");
+local default_node = module:get_option("github_node", "github");
+local node_prefix = module:get_option_string("github_node_prefix", "github/");
+local node_mapping = module:get_option_string("github_node_mapping");
 local github_actor = module:get_option_string("github_actor") or true;
 local secret = module:get_option("github_secret");
 
@@ -37,6 +39,11 @@
 		return 501;
 	end -- else .. is this even github?
 
+	local node = default_node;
+	if node_mapping then
+		node = node_prefix .. data.repository[node_mapping];
+	end
+
 	for _, commit in ipairs(data.commits) do
 		local ok, err = pubsub_service:publish(node, github_actor, commit.id,
 			st.stanza("item", { id = commit.id, xmlns = "http://jabber.org/protocol/pubsub" })
@@ -65,13 +72,15 @@
 	};
 });
 
-function module.load()
-	if not pubsub_service.nodes[node] then
-		local ok, err = pubsub_service:create(node, true);
-		if not ok then
-			module:log("error", "Error creating node: %s", err);
-		else
-			module:log("debug", "Node %q created", node);
+if not node_mapping then
+	function module.load()
+		if not pubsub_service.nodes[default_node] then
+			local ok, err = pubsub_service:create(default_node, true);
+			if not ok then
+				module:log("error", "Error creating node: %s", err);
+			else
+				module:log("debug", "Node %q created", default_node);
+			end
 		end
 	end
 end