[lastfm] make .lastfm behave the same as .weather

- syntax is now .lastfm <username> [dontsave] | @<nick>

plugins/lastfm.py

@@ -10,22 +10,42 @@ api_url = "http://ws.audioscrobbler.com/2.0/?format=json"
 
 @hook.api_key('lastfm')
 @hook.command(autohelp=False)
-def lastfm(inp, nick='', say=None, api_key=None):
-    if inp:
-        user = inp
+def lastfm(inp, chan='', nick='', reply=None, api_key=None, db=None):
+    ".lastfm <username> [dontsave] | @<nick> -- gets current or last played " \
+        "track from lastfm"
+
+    db.execute(
+        "create table if not exists "
+        "lastfm(chan, nick, user, primary key(chan, nick))"
+    )
+
+    if inp[0:1] == '@':
+        nick = inp[1:].strip()
+        user = None
+        dontsave = True
     else:
-        user = nick
+        user = inp
+
+        dontsave = user.endswith(" dontsave")
+        if dontsave:
+            user = user[:-9].strip().lower()
+
+    if not user:
+        user = db.execute(
+            "select user from lastfm where chan=? and nick=lower(?)",
+            (chan, nick)).fetchone()
+        if not user:
+            return lastfm.__doc__
+        user = user[0]
 
     response = http.get_json(api_url, method="user.getrecenttracks",
                              api_key=api_key, user=user, limit=1)
 
     if 'error' in response:
-        if inp:  # specified a user name
-            return "error: %s" % response["message"]
-        else:
-            return "your nick is not a Last.fm account. try '.lastfm username'."
+        return "error: %s" % response["message"]
 
-    if not "track" in response["recenttracks"] or len(response["recenttracks"]["track"]) == 0:
+    if not "track" in response["recenttracks"] or \
+            len(response["recenttracks"]["track"]) == 0:
         return "no recent tracks for user \x02%s\x0F found" % user
 
     tracks = response["recenttracks"]["track"]
@@ -53,4 +73,10 @@ def lastfm(inp, nick='', say=None, api_key=None):
     if album:
         ret += " on \x02%s\x0f" % album
 
-    say(ret)
+    reply(ret)
+
+    if inp and not dontsave:
+        db.execute(
+            "insert or replace into lastfm(chan, nick, user) "
+            "values (?, ?, ?)", (chan, nick.lower(), inp))
+        db.commit()