Files
swingmusic-extended/app/lib/playlistlib.py
T
2024-11-10 19:38:51 +03:00

138 lines
3.3 KiB
Python

"""
This library contains all the functions related to playlists.
"""
import os
import random
import string
from typing import Any
from PIL import Image, ImageSequence
from app import settings
from app.models.track import Track
from app.store.albums import AlbumStore
from app.store.tracks import TrackStore
def create_thumbnail(image: Any, img_path: str) -> str:
"""
Creates a 250 x 250 thumbnail from a playlist image
"""
thumb_path = "thumb_" + img_path
full_thumb_path = os.path.join(
settings.Paths.get_app_dir(), "images", "playlists", thumb_path
)
aspect_ratio = image.width / image.height
new_w = round(250 * aspect_ratio)
thumb = image.resize((new_w, 250), Image.ANTIALIAS)
thumb.save(full_thumb_path, "webp")
return thumb_path
def create_gif_thumbnail(image: Any, img_path: str):
"""
Creates a 250 x 250 thumbnail from a playlist image
"""
thumb_path = "thumb_" + img_path
full_thumb_path = os.path.join(
settings.Paths.get_app_dir(), "images", "playlists", thumb_path
)
frames = []
for frame in ImageSequence.Iterator(image):
aspect_ratio = frame.width / frame.height
new_w = round(250 * aspect_ratio)
thumb = frame.resize((new_w, 250), Image.ANTIALIAS)
frames.append(thumb)
frames[0].save(full_thumb_path, save_all=True, append_images=frames[1:])
return thumb_path
def save_p_image(
img: Image, pid: int, content_type: str = None, filename: str = None
) -> str:
"""
Saves a playlist banner image and returns the filepath.
"""
# img = Image.open(file)
random_str = "".join(random.choices(string.ascii_letters + string.digits, k=5))
if not filename:
filename = str(pid) + str(random_str) + ".webp"
full_img_path = os.path.join(settings.Paths.get_playlist_img_path(), filename)
if content_type == "image/gif":
frames = []
for frame in ImageSequence.Iterator(img):
frames.append(frame.copy())
frames[0].save(full_img_path, save_all=True, append_images=frames[1:])
create_gif_thumbnail(img, img_path=filename)
return filename
img.save(full_img_path, "webp")
create_thumbnail(img, img_path=filename)
return filename
def duplicate_images(images: list):
if len(images) == 1:
images *= 4
elif len(images) == 2:
images += list(reversed(images))
elif len(images) == 3:
images = images + images[:1]
return images
def get_first_4_images(
tracks: list[Track] = [], trackhashes: list[str] = []
) -> list[dict["str", str]]:
"""
Returns images of the first 4 albums that appear in the track list.
When tracks are not passed, trackhashes need to be passed.
Tracks are then resolved from the store.
"""
if len(trackhashes) > 0:
tracks = TrackStore.get_tracks_by_trackhashes(trackhashes)
albums = []
for track in tracks:
if track.albumhash not in albums:
albums.append(track.albumhash)
if len(albums) == 4:
break
albums = AlbumStore.get_albums_by_hashes(albums)
images = [
{
"image": album.image,
"color": album.color,
}
for album in albums
]
if len(images) == 4:
return images
return duplicate_images(images)