From 098092dcc3e14254fb545d990a1fbd850281687a Mon Sep 17 00:00:00 2001
From: Rafael Vargas <rafael.s.vargas18@gmail.com>
Date: Sun, 26 Dec 2021 14:26:39 -0400
Subject: [PATCH] First upgrade in Playlist class

---
 vulkanbot/music/Playlist.py | 110 ++++++++++++++++++++++++++++++++++--
 1 file changed, 105 insertions(+), 5 deletions(-)

diff --git a/vulkanbot/music/Playlist.py b/vulkanbot/music/Playlist.py
index e3e68b9..d749c08 100644
--- a/vulkanbot/music/Playlist.py
+++ b/vulkanbot/music/Playlist.py
@@ -1,9 +1,109 @@
+from collections import deque
+import random
+from Song import Song
+
+
 class Playlist():
-    """Class to manage and control the musics to play"""
+    """Class to manage and control the songs to play and played"""
 
     def __init__(self) -> None:
-        self.queue = []
-        self.history = []
+        self.__queue = deque()  # Store the musics to play
+        self.__songs_history = deque()  # Store the musics played
+        self.__name_history = deque()  # Store the name of musics played
 
-    def next_music():
-        pass
+        self.__loop_one = False
+        self.__loop_all = False
+
+        self.__current = None
+
+    def __len__(self):
+        return len(self.queue)
+
+    def next_song(self):
+        """Return the source of the next song to play"""
+        if self.__current == None:
+            print('Nenhuma música tocando')
+            return None
+
+        if self.__loop_one:  # Insert the current song to play again
+            self.__queue.appendleft(self.__current)
+
+        if self.__loop_all:  # Insert the current song in the end of queue
+            self.__queue.append(self.__current)
+
+        if len(self.__queue) == 0:  # If nothing no more song to play, return
+            return None
+
+        played_song = self.__current
+        # Add played song name to history
+        self.__name_history.append(played_song.title)
+        return self.__queue[0]  # Return the next song to play
+
+    def prev_song(self):
+        """Return the source of the last song played
+
+        Return None or the source of the prev song
+        """
+        if len(self.__songs_history) == 0:
+            return None
+        else:
+            return self.__songs_history[0].source
+
+    def add_song(self, song: Song) -> None:
+        """Receives a song object and store to the play queue"""
+        if type(song) != Song:
+            print('Song type invalid')
+            return
+
+        self.__queue.append(song)
+
+    def shuffle(self):
+        """Shuffle the order of the songs to play"""
+        random.shuffle(self.__queue)
+
+    def revert(self):
+        """Revert the order of the songs to play"""
+        self.__queue.reverse()
+
+    def clear(self) -> None:
+        """Clear the songs to play song history"""
+        self.__queue.clear()
+        self.__songs_history.clear()
+
+    def play(self):
+        """Start the play of the first musics and return his source"""
+        if len(self.__queue) == 0:
+            print('Nenhuma música para tocar')
+            return None
+
+        self.__current = self.__queue[0]
+        return self.__queue[0].source
+
+    def loop_one(self) -> str:
+        """Try to start the loop of the current song
+
+        Return: Embed descrition to show to user
+        """
+        if self.__loop_all == True:
+            return 'Vulkan already looping one music, disable loop first'
+        elif self.__loop_one == True:
+            return "I'm already doing this, you dumb ass"
+        else:
+            self.__loop_one = True
+
+    def loop_all(self) -> str:
+        """Try to start the loop of all songs
+
+        Return: Embed descrition to show to user
+        """
+        if self.__loop_one == True:
+            return 'Vulkan already looping one music, disable loop first'
+        elif self.__loop_all == True:
+            return "I'm already doing this, you dumb ass"
+        else:
+            self.__loop_all = True
+
+    def loop_off(self) -> None:
+        """Disable both types of loop"""
+        self.__loop_all = False
+        self.__loop_one = False