Add ability to track (and show) who first send a specific link that was

auto-titled

modules/title.py

@@ -1,4 +1,4 @@
-import re
+import hashlib, re
 from src import EventManager, ModuleManager, utils
 
 REGEX_URL = re.compile("https?://\S+", re.I)
@@ -6,7 +6,15 @@ REGEX_URL = re.compile("https?://\S+", re.I)
 @utils.export("channelset", {"setting": "auto-title",
     "help": "Disable/Enable automatically getting info titles from URLs",
     "validate": utils.bool_or_none})
+@utils.export("channelset", {"setting": "auto-title-first",
+    "help": ("Enable/disable showing who first posted a URL that was "
+        "auto-titled"),
+    "validate": utils.bool_or_none})
 class Module(ModuleManager.BaseModule):
+    def _url_hash(self, url):
+        return "sha256:%s" % hashlib.sha256(url.lower().encode("utf8")
+            ).hexdigest()
+
     def _get_title(self, url):
         try:
             page = utils.http.request(url, soup=True)
@@ -26,10 +34,29 @@ class Module(ModuleManager.BaseModule):
     def channel_message(self, event):
         match = re.search(REGEX_URL, event["message"])
         if match and event["channel"].get_setting("auto-title", False):
+            url = match.group(0)
             title = self._get_title(match.group(0))
+
             if title:
+                message = title
+                if event["channel"].get_setting("auto-title-first", False):
+                    setting = "url-last-%s" % self._url_hash(url)
+                    first_details = event["channel"].get_setting(setting, None)
+
+                    if first_details:
+                        first_nickname, first_timestamp = first_details
+                        timestamp_parsed = utils.iso8601_parse(first_timestamp)
+                        timestamp_human = utils.datetime_human(timestamp_parsed)
+                        message = "%s (first posted by %s at %s)" % (title,
+                            first_nickname, timestamp_human)
+                    else:
+                        event["channel"].set_setting(setting,
+                            [event["user"].nickname,
+                            utils.iso8601_format_now()])
+
+
                 self.events.on("send.stdout").call(target=event["channel"],
-                    message=title, module_name="Title",
+                    message=message, module_name="Title",
                     server=event["server"])
 
     @utils.hook("received.command.t", alias_of="title")