Add lastfm/album mode

[mpd-sima.git] / launch

diff --git a/launch b/launch
index d6544b7c8acd6f09ccecf866f4c5ff48dfcad89b..b769204e37371b932218050ca0a8069d7e4becb6 100755 (executable)
--- a/launch
+++ b/launch
@@ -1,28 +1,127 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
+"""Sima
+"""
+
+# standart library import
+import logging
+import sys
+
+from importlib import __import__
+from os.path import isfile
+##
+
+# third parties components
+##
+
+# local import
+from sima import core
+from sima.lib.logger import set_logger
+from sima.lib.simadb import SimaDB
+from sima.utils.config import ConfMan
+from sima.utils.startopt import StartOpt
+from sima.utils.utils import exception_log
+##
+# internal plugins
+from sima.plugins.crop import Crop
+from sima.plugins.addhist import History
+from sima.plugins.lastfm import Lastfm
+from sima.plugins.mpd import MpdOptions
+from sima.plugins.randomfallback import RandomFallBack
+
+# official plugins to start
+PLUGINS = (Crop, History, MpdOptions,
+           Lastfm, RandomFallBack)
+
+
+def load_contrib_plugins(sima):
+    """Handles contrib/external plugins
+    """
+    if not sima.config.has_option('sima', 'plugins'):
+        return
+    logger = logging.getLogger('sima')
+    for plugin in sima.config.get('sima','plugins').split(','):
+        plugin = plugin.strip(' \n')
+        module = 'sima.plugins.contrib.{}'.format(plugin.lower())
+        try:
+            mod_obj = __import__(module, fromlist=[plugin])
+        except ImportError as err:
+            logger.error('Failed to load plugin\'s module: {0} ({1})'.format(module, err))
+            sima.shutdown()
+        try:
+            plugin_obj = getattr(mod_obj, plugin)
+        except AttributeError as err:
+            logger.error('Failed to load plugin {0} ({1})'.format(plugin, err))
+            sima.shutdown()
+        logger.info('Loading contrib plugin: {name} ({doc})'.format(**plugin_obj.info()))
+        sima.register_plugin(plugin_obj)
+
+
+def load_internal_plugins(sima):
+    """Handles contrib/external plugins
+    """
+    raise NotImplementedError
+
 
 def main():
-    from logging import getLogger
-    ##
-    from sima import core
-    from sima.plugins.crop import Crop
-    from sima.lib.logger import set_logger
-    ##
-    set_logger(log_level='debug')
-    logger = getLogger('sima')
-    m = core.Sima()
-    m.register_plugin(Crop)
+    """Entry point, deal w/ CLI and starts application
+    """
+    info = dict({'version': core.__version__,})
+    # StartOpt gathers options from command line call (in StartOpt().options)
+    sopt = StartOpt(info)
+    # set logger
+    verbosity = sopt.options.get('verbosity', 'warning')
+    logfile = sopt.options.get('logfile', None)
+    cli_loglevel = getattr(logging, verbosity.upper())
+    set_logger(level=verbosity, logfile=logfile)
+    logger = logging.getLogger('sima')
+    logger.setLevel(cli_loglevel)
+    # loads configuration
+    config = ConfMan(logger, sopt.options).config
+    logger.setLevel(getattr(logging,
+                    config.get('log', 'verbosity').upper()))  # pylint: disable=E1103
+
+    logger.debug('Command line say: {0}'.format(sopt.options))
+    # Create Database
+    db_file = config.get('sima', 'db_file')
+    if (sopt.options.get('create_db', None)
+       or not isfile(db_file)):
+        logger.info('Creating database in "{}"'.format(db_file))
+        open(db_file, 'a').close()
+        SimaDB(db_path=db_file).create_db()
+        if sopt.options.get('create_db', None):
+            logger.info('Done, bye...')
+            sys.exit(0)
+
+    logger.info('Starting...')
+    sima = core.Sima(config)
+
+    #  Loading internal plugins
+    for plugin in PLUGINS:
+        logger.info('Loading internal plugin: {name} ({doc})'.format(**plugin.info()))
+        sima.register_plugin(plugin)
+
+    #  Loading contrib plugins
+    load_contrib_plugins(sima)
     try:
-        m.run()
+        sima.run()
     except KeyboardInterrupt:
         logger.info('Caught KeyboardInterrupt, stopping')
-        m.shutdown()
+        sima.shutdown()
+
 
+def run():
+    """Catching broad exception
+    """
+    # pylint: disable=broad-except
+    try:
+        main()
+    except Exception:
+        exception_log()
 
 # Script starts here
 if __name__ == '__main__':
-    main()
-
+    run()
 
 # VIM MODLINE
 # vim: ai ts=4 sw=4 sts=4 expandtab