#356 Print useful information when fuck called and alias isn't configured

thefuck/logs.py

@@ -76,3 +76,19 @@ def debug_time(msg, settings):
         yield
     finally:
         debug(u'{} took: {}'.format(msg, datetime.now() - started), settings)
+
+
+def how_to_configure_alias(configuration_details, settings):
+    print("Seems like {bold}fuck{reset} alias isn't configured!".format(
+        bold=color(colorama.Style.BRIGHT, settings),
+        reset=color(colorama.Style.RESET_ALL, settings)))
+    if configuration_details:
+        content, path = configuration_details
+        print(
+            "Please put {bold}{content}{reset} in your "
+            "{bold}{path}{reset}.".format(
+                bold=color(colorama.Style.BRIGHT, settings),
+                reset=color(colorama.Style.RESET_ALL, settings),
+                path=path,
+                content=content))
+    print('More details - https://github.com/nvbn/thefuck#manual-installation')

thefuck/main.py

@@ -120,6 +120,18 @@ def print_alias(entry_point=True):
     print(shells.app_alias(alias))
 
 
+def how_to_configure_alias():
+    """Shows useful information about how-to configure alias.
+
+    It'll be only visible when user type fuck and when alias isn't configured.
+
+    """
+    colorama.init()
+    user_dir = setup_user_dir()
+    settings = conf.get_settings(user_dir)
+    logs.how_to_configure_alias(shells.how_to_configure(), settings)
+
+
 def main():
     parser = ArgumentParser(prog='thefuck')
     parser.add_argument('-v', '--version',

thefuck/shells.py

@@ -72,6 +72,9 @@ class Generic(object):
     def and_(self, *commands):
         return u' && '.join(commands)
 
+    def how_to_configure(self):
+        return
+
 
 class Bash(Generic):
     def app_alias(self, fuck):
@@ -103,6 +106,15 @@ class Bash(Generic):
     def _script_from_history(self, line):
         return line
 
+    def how_to_configure(self):
+        if os.path.join(os.path.expanduser('~'), '.bashrc'):
+            config = '~/.bashrc'
+        elif os.path.join(os.path.expanduser('~'), '.bash_profile'):
+            config = '~/.bashrc'
+        else:
+            config = 'bash config'
+        return 'eval $(thefuck --alias)', config
+
 
 class Fish(Generic):
 
@@ -156,6 +168,9 @@ class Fish(Generic):
     def and_(self, *commands):
         return u'; and '.join(commands)
 
+    def how_to_configure(self):
+        return 'eval thefuck --alias', '~/.config/fish/config.fish'
+
 
 class Zsh(Generic):
     def app_alias(self, fuck):
@@ -191,6 +206,9 @@ class Zsh(Generic):
         else:
             return ''
 
+    def how_to_configure(self):
+        return 'eval $(thefuck --alias)', '~/.zshrc'
+
 
 class Tcsh(Generic):
     def app_alias(self, fuck):
@@ -217,6 +235,9 @@ class Tcsh(Generic):
     def _get_history_line(self, command_script):
         return u'#+{}\n{}\n'.format(int(time()), command_script)
 
+    def how_to_configure(self):
+        return 'eval `thefuck --alias`', '~/.tcshrc'
+
 
 shells = defaultdict(Generic, {
     'bash': Bash(),
@@ -266,3 +287,6 @@ def get_aliases():
 @memoize
 def get_history():
     return list(_get_shell().get_history())
+
+def how_to_configure():
+    return _get_shell().how_to_configure()