Move MongoDB classes into a seperate db module (#62)

* move album class into mongodb dir

* inherit AlbumMethods at DB Initialization level

* move album -> db/mongodb

* move mongodb classes into separate package

server/app/db/__init__.py

@@ -1,44 +1,202 @@
-"""
-This module creates and initiliazes a MongoDB instance. It also contains the
-`convert_one()` and `conver_many()` methods for converting MongoDB cursors to Python dicts.
-"""
-
-import pymongo
-import json
-from bson import json_util
-
-
-class Mongo:
+class AlbumMethods:
     """
-    The base class for all mongodb classes.
+    Lists all the methods that can be found in the Albums class.
     """
 
-    def __init__(self, database):
-        mongo_uri = pymongo.MongoClient()
-        self.db = mongo_uri[database]
+    def insert_album():
+        """
+        Inserts a new album object into the database.
+        """
+        pass
+
+    def get_all_albums():
+        """
+        Returns all the albums in the database.
+        """
+        pass
+
+    def get_album_by_id():
+        """
+        Returns a single album matching the passed id.
+        """
+        pass
+
+    def get_album_by_name():
+        """
+        Returns a single album matching the passed name.
+        """
+        pass
+
+    def get_album_by_artist():
+        """
+        Returns a single album matching the passed artist name.
+        """
+        pass
 
 
-def convert_one(song):
+class ArtistMethods:
     """
-    Converts a single mongodb cursor to a json object.
-    """
-    json_song = json.dumps(song, default=json_util.default)
-    loaded_song = json.loads(json_song)
-
-    return loaded_song
-
-
-def convert_many(array):
-    """
-    Converts a list of mongodb cursors to a list of json objects.
+    Lists all the methods that can be found in the Artists class.
     """
 
-    songs = []
+    def insert_artist():
+        """
+        Inserts a new artist object into the database.
+        """
+        pass
 
-    for song in array:
-        json_song = json.dumps(song, default=json_util.default)
-        loaded_song = json.loads(json_song)
+    def get_all_artists():
+        """
+        Returns all the artists in the database.
+        """
+        pass
 
-        songs.append(loaded_song)
+    def get_artist_by_id():
+        """
+        Returns an artist matching the mongo Id.
+        """
+        pass
 
-    return songs
+    def get_artists_by_name():
+        """
+        Returns all the artists matching the query.
+        """
+        pass
+
+
+class PlaylistMethods:
+    """
+    Lists all the methods that can be found in the Playlists class.
+    """
+
+    def insert_playlist():
+        """
+        Inserts a new playlist object into the database.
+        """
+        pass
+
+    def get_all_playlists():
+        """
+        Returns all the playlists in the database.
+        """
+        pass
+
+    def get_playlist_by_id():
+        """
+        Returns a single playlist matching the id in the query params.
+        """
+        pass
+
+    def add_track_to_playlist():
+        """
+        Adds a track to a playlist.
+        """
+        pass
+
+    def get_playlist_by_name():
+        """
+        Returns a single playlist matching the name in the query params.
+        """
+        pass
+
+    def update_playlist():
+        """
+        Updates a playlist.
+        """
+        pass
+
+
+class TrackMethods:
+    """
+    Lists all the methods that can be found in the Tracks class.
+    """
+
+    def insert_track():
+        """
+        Inserts a new track object into the database.
+        """
+        pass
+
+    def drop_db():
+        """
+        Drops the entire database.
+        """
+        pass
+
+    def get_all_tracks():
+        """
+        Returns all the tracks in the database.
+        """
+        pass
+
+    def get_track_by_id():
+        """
+        Returns a single track matching the id in the query params.
+        """
+        pass
+
+    def get_track_by_album():
+        """
+        Returns a single track matching the album in the query params.
+        """
+        pass
+
+    def search_tracks_by_album():
+        """
+        Returns all the tracks matching the albums in the query params (using regex).
+        """
+        pass
+
+    def search_tracks_by_artist():
+        """
+        Returns all the tracks matching the artists in the query params.
+        """
+        pass
+
+    def find_track_by_title():
+        """
+        Finds all the tracks matching the title in the query params.
+        """
+        pass
+
+    def find_tracks_by_album():
+        """
+        Finds all the tracks matching the album in the query params.
+        """
+        pass
+
+    def find_tracks_by_folder():
+        """
+        Finds all the tracks matching the folder in the query params.
+        """
+        pass
+
+    def find_tracks_by_artist():
+        """
+        Finds all the tracks matching the artist in the query params.
+        """
+        pass
+
+    def find_tracks_by_albumartist():
+        """
+        Finds all the tracks matching the album artist in the query params.
+        """
+        pass
+
+    def get_track_by_path():
+        """
+        Returns a single track matching the path in the query params.
+        """
+        pass
+
+    def remove_track_by_path():
+        """
+        Removes a track from the database. Returns a boolean indicating success or failure of the operation.
+        """
+        pass
+
+    def remove_track_by_id():
+        """
+        Removes a track from the database. Returns a boolean indicating success or failure of the operation.
+        """
+        pass