From 1a18639289d3ba752f71b1e06a5635628277f35d Mon Sep 17 00:00:00 2001
From: Quentin Santos <quentin.santos@worldonline.fr>
Date: Thu, 19 Feb 2015 23:48:24 +0100
Subject: [PATCH 1/2] Add property mapping module names to commands

---
 willie/bot.py            | 31 +++++++++++++++++++++++++++++++
 willie/modules/reload.py |  3 +++
 2 files changed, 34 insertions(+)

diff --git a/willie/bot.py b/willie/bot.py
index c182683100..b8dc1089d6 100644
--- a/willie/bot.py
+++ b/willie/bot.py
@@ -306,6 +306,9 @@ def setup(self):
         self.callables = set()
         self.shutdown_methods = set()
 
+        # module name: list(command names)
+        self.modules_commands = {}
+
         filenames = self.config.enumerate_modules()
         # Coretasks is special. No custom user coretasks.
         this_dir = os.path.dirname(os.path.abspath(__file__))
@@ -327,6 +330,7 @@ def setup(self):
                     if hasattr(module, 'setup'):
                         module.setup(self)
                     self.register(vars(module))
+                    self.register_help(module)
                     modules.append(name)
                 except Exception as e:
                     error_count = error_count + 1
@@ -426,6 +430,33 @@ def remove_func(func, commands):
                     )
                 self.shutdown_methods.remove(obj)
 
+    def register_help(self, module):
+        commands = sum([
+            obj.commands
+            for _, obj in iteritems(vars(module))
+            if hasattr(obj, 'commands')
+        ], [])
+        # single command are put in special group "others"
+        if len(commands) == 1:
+            others = self.modules_commands.setdefault("others", [])
+            others.append(commands[0])
+        elif commands:
+            self.modules_commands[module.__name__] = commands
+
+    def unregister_help(self, module):
+        commands = sum([
+            obj.commands
+            for _, obj in iteritems(vars(module))
+            if hasattr(obj, 'commands')
+        ], [])
+        if len(commands) == 1:
+            command = commands[0]
+            others = self.modules_commands.get("others", [])
+            if command in others:
+                del others[others.index(command)]
+        else:
+            del self.modules_commands[module.__name__]
+
     def sub(self, pattern):
         """Replace any of the following special directives in a function's rule expression:
         $nickname -> the bot's nick
diff --git a/willie/modules/reload.py b/willie/modules/reload.py
index 0f2999b49d..639495e3f4 100644
--- a/willie/modules/reload.py
+++ b/willie/modules/reload.py
@@ -45,6 +45,7 @@ def f_reload(bot, trigger):
         if bot.is_callable(obj) or bot.is_shutdown(obj):
             old_callables[obj_name] = obj
 
+    bot.unregister_help(old_module)
     bot.unregister(old_callables)
     # Also remove all references to willie callables from top level of the
     # module, so that they will not get loaded again if reloading the
@@ -72,6 +73,7 @@ def f_reload(bot, trigger):
     modified = time.strftime('%Y-%m-%d %H:%M:%S', time.gmtime(mtime))
 
     bot.register(vars(module))
+    bot.register_help(module)
     bot.bind_commands()
 
     bot.reply('%r (version: %s)' % (module, modified))
@@ -120,6 +122,7 @@ def f_load(bot, trigger):
     if hasattr(module, 'setup'):
         module.setup(bot)
     bot.register(vars(module))
+    bot.register_help(module)
     bot.bind_commands()
 
     bot.reply('%r (version: %s)' % (module, modified))

From 8bba791e6a3416ccdd7f956dc874ebdca24d74b8 Mon Sep 17 00:00:00 2001
From: Quentin Santos <quentin.santos@worldonline.fr>
Date: Thu, 19 Feb 2015 23:48:39 +0100
Subject: [PATCH 2/2] Argument-less `.help` lists commands by module

---
 willie/modules/help.py | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/willie/modules/help.py b/willie/modules/help.py
index 6f235fa6e9..b32e001935 100644
--- a/willie/modules/help.py
+++ b/willie/modules/help.py
@@ -12,6 +12,8 @@
 from willie.module import commands, rule, example, priority
 from willie.tools import iterkeys
 
+import textwrap
+
 
 def setup(bot=None):
     if not bot:
@@ -30,7 +32,26 @@ def setup(bot=None):
 def help(bot, trigger):
     """Shows a command's documentation, and possibly an example."""
     if not trigger.group(2):
-        bot.reply('Say .help <command> (for example .help c) to get help for a command, or .commands for a list of commands.')
+        if not trigger.is_privmsg:
+            bot.reply("Sending my resume in private...")
+
+        bot.notice("Send e.g. '.help length' for more.", trigger.nick)
+
+        groups = bot.modules_commands
+        name_length = max(6, max(len(k) for k in groups))
+        for name in sorted(groups):
+            group = groups[name]
+            # set the name column to a constant width
+            name = name.upper().ljust(name_length)
+            # bolden the name
+            group_help = "\002" + name + "\002  " + "  ".join(group)
+            # wrap message with indent for name column
+            indent = " " * name_length + "  "
+            group_help = textwrap.wrap(group_help, subsequent_indent=indent)
+            # send it
+            for line in group_help:
+                bot.notice(line, trigger.nick)
+
     else:
         name = trigger.group(2)
         name = name.lower()