missingnotice: Implement article query

Issue #64 (#64)

bots/missingnotice.py

@@ -22,13 +22,60 @@
 #
 #
 
+from sqlalchemy import create_engine
+from sqlalchemy.engine.url import URL
+
+import pywikibot
+
+import jogobot
+
 
 class MissingNoticeBot():
     """
     """
 
+    # MySQL-query to get articles with notice
+    cat_article_query = """
+SELECT `page_title`
+FROM `categorylinks`
+JOIN `category`
+ON `cl_to` = `cat_title`
+AND `cat_title` LIKE "{cat}\_%%"
+JOIN `page`
+ON `cl_from` = `page_id`
+""".format(cat=jogobot.config["red.missingnotice"]["article_category"])
+
     def __init__( self, genFactory, **kwargs ):
         pass
 
     def run( self ):
-        pass
+        print(type(self).get_categorized_articles() )
+
+    @classmethod
+    def get_categorized_articles( cls ):
+        """
+        Queries all articles containing the notice based on category set by
+        notice template. Category can be configured in
+        jogobot.config["red.missingnotice"]["article_category"]
+
+        @returns List of all articles containing notice
+        @rtype list
+        """
+
+        # construct connection url for sqlalchemy
+        url = URL( "mysql+pymysql",
+                   username=pywikibot.config.db_username,
+                   password=pywikibot.config.db_password,
+                   host=jogobot.config["red.missingnotice"]["wikidb_host"],
+                   port=jogobot.config["red.missingnotice"]["wikidb_port"],
+                   database=jogobot.config["red.missingnotice"]["wikidb_name"],
+                   query={'charset': 'utf8'} )
+
+        # create sqlalchemy engine
+        engine = create_engine(url, echo=True)
+
+        # fire the query to get articles with notice
+        result = engine.execute(cls.cat_article_query)
+
+        # return list with articles with notice
+        return [ row['page_title'].decode("utf-8") for row in result ]