mirror of https://github.com/krateng/maloja.git
310 lines
8.2 KiB
Python
310 lines
8.2 KiB
Python
from .pkg_global.conf import data_dir, malojaconfig
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from . import thirdparty
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from . import database
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from doreah.logging import log
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import itertools
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import os
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import urllib
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import random
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import base64
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import requests
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import datauri
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import io
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from threading import Thread, Timer, BoundedSemaphore
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import re
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import datetime
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import sqlalchemy as sql
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DB = {}
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engine = sql.create_engine(f"sqlite:///{data_dir['cache']('images.sqlite')}", echo = False)
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meta = sql.MetaData()
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DB['artists'] = sql.Table(
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'artists', meta,
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sql.Column('id',sql.Integer,primary_key=True),
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sql.Column('url',sql.String),
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sql.Column('expire',sql.Integer),
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sql.Column('raw',sql.String)
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)
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DB['tracks'] = sql.Table(
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'tracks', meta,
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sql.Column('id',sql.Integer,primary_key=True),
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sql.Column('url',sql.String),
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sql.Column('expire',sql.Integer),
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sql.Column('raw',sql.String)
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)
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meta.create_all(engine)
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def get_image_from_cache(id,table):
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now = int(datetime.datetime.now().timestamp())
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with engine.begin() as conn:
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op = DB[table].select().where(
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DB[table].c.id==id,
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DB[table].c.expire>now
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)
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result = conn.execute(op).all()
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for row in result:
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if row.raw is not None:
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return {'type':'raw','value':row.raw}
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else:
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return {'type':'url','value':row.url} # returns None as value if nonexistence cached
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return None # no cache entry
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def set_image_in_cache(id,table,url):
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remove_image_from_cache(id,table)
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now = int(datetime.datetime.now().timestamp())
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if url is None:
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expire = now + (malojaconfig["CACHE_EXPIRE_NEGATIVE"] * 24 * 3600)
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else:
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expire = now + (malojaconfig["CACHE_EXPIRE_POSITIVE"] * 24 * 3600)
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raw = dl_image(url)
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with engine.begin() as conn:
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op = DB[table].insert().values(
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id=id,
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url=url,
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expire=expire,
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raw=raw
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)
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result = conn.execute(op)
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def remove_image_from_cache(id,table):
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with engine.begin() as conn:
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op = DB[table].delete().where(
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DB[table].c.id==id,
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)
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result = conn.execute(op)
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def dl_image(url):
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if not malojaconfig["PROXY_IMAGES"]: return None
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if url is None: return None
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if url.startswith("/"): return None #local image
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try:
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r = requests.get(url)
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mime = r.headers.get('content-type') or 'image/jpg'
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data = io.BytesIO(r.content).read()
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uri = datauri.DataURI.make(mime,charset='ascii',base64=True,data=data)
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log(f"Downloaded {url} for local caching")
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return uri
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except Exception:
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log(f"Image {url} could not be downloaded for local caching")
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return None
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### getting images for any website embedding now ALWAYS returns just the generic link
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### even if we have already cached it, we will handle that on request
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def get_track_image(track=None,track_id=None):
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if track_id is None:
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track_id = database.sqldb.get_track_id(track)
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return f"/image?type=track&id={track_id}"
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def get_artist_image(artist=None,artist_id=None):
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if artist_id is None:
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artist_id = database.sqldb.get_artist_id(artist)
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return f"/image?type=artist&id={artist_id}"
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resolve_semaphore = BoundedSemaphore(8)
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def resolve_track_image(track_id):
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with resolve_semaphore:
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# check cache
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result = get_image_from_cache(track_id,'tracks')
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if result is not None:
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return result
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track = database.sqldb.get_track(track_id)
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# local image
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if malojaconfig["USE_LOCAL_IMAGES"]:
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images = local_files(artists=track['artists'],title=track['title'])
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if len(images) != 0:
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result = random.choice(images)
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result = urllib.parse.quote(result)
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result = {'type':'url','value':result}
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set_image_in_cache(track_id,'tracks',result['value'])
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return result
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# third party
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result = thirdparty.get_image_track_all((track['artists'],track['title']))
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result = {'type':'url','value':result}
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set_image_in_cache(track_id,'tracks',result['value'])
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return result
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def resolve_artist_image(artist_id):
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with resolve_semaphore:
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# check cache
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result = get_image_from_cache(artist_id,'artists')
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if result is not None:
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return result
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artist = database.sqldb.get_artist(artist_id)
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# local image
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if malojaconfig["USE_LOCAL_IMAGES"]:
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images = local_files(artist=artist)
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if len(images) != 0:
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result = random.choice(images)
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result = urllib.parse.quote(result)
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result = {'type':'url','value':result}
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set_image_in_cache(artist_id,'artists',result['value'])
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return result
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# third party
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result = thirdparty.get_image_artist_all(artist)
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result = {'type':'url','value':result}
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set_image_in_cache(artist_id,'artists',result['value'])
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return result
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# removes emojis and weird shit from names
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def clean(name):
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return "".join(c for c in name if c.isalnum() or c in []).strip()
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def get_all_possible_filenames(artist=None,artists=None,title=None):
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# check if we're dealing with a track or artist, then clean up names
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# (only remove non-alphanumeric, allow korean and stuff)
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if title is not None and artists is not None:
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track = True
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title, artists = clean(title), [clean(a) for a in artists]
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elif artist is not None:
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track = False
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artist = clean(artist)
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else: return []
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superfolder = "tracks/" if track else "artists/"
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filenames = []
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if track:
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#unsafeartists = [artist.translate(None,"-_./\\") for artist in artists]
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safeartists = [re.sub("[^a-zA-Z0-9]","",artist) for artist in artists]
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#unsafetitle = title.translate(None,"-_./\\")
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safetitle = re.sub("[^a-zA-Z0-9]","",title)
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if len(artists) < 4:
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unsafeperms = itertools.permutations(artists)
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safeperms = itertools.permutations(safeartists)
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else:
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unsafeperms = [sorted(artists)]
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safeperms = [sorted(safeartists)]
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for unsafeartistlist in unsafeperms:
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filename = "-".join(unsafeartistlist) + "_" + title
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if filename != "":
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filenames.append(filename)
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filenames.append(filename.lower())
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for safeartistlist in safeperms:
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filename = "-".join(safeartistlist) + "_" + safetitle
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if filename != "":
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filenames.append(filename)
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filenames.append(filename.lower())
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filenames = list(set(filenames))
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if len(filenames) == 0: filenames.append(str(hash((frozenset(artists),title))))
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else:
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#unsafeartist = artist.translate(None,"-_./\\")
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safeartist = re.sub("[^a-zA-Z0-9]","",artist)
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filename = artist
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if filename != "":
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filenames.append(filename)
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filenames.append(filename.lower())
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filename = safeartist
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if filename != "":
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filenames.append(filename)
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filenames.append(filename.lower())
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filenames = list(set(filenames))
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if len(filenames) == 0: filenames.append(str(hash(artist)))
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return [superfolder + name for name in filenames]
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def local_files(artist=None,artists=None,title=None):
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filenames = get_all_possible_filenames(artist,artists,title)
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images = []
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for purename in filenames:
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# direct files
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for ext in ["png","jpg","jpeg","gif"]:
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#for num in [""] + [str(n) for n in range(0,10)]:
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if os.path.exists(data_dir['images'](purename + "." + ext)):
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images.append("/images/" + purename + "." + ext)
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# folder
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try:
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for f in os.listdir(data_dir['images'](purename)):
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if f.split(".")[-1] in ["png","jpg","jpeg","gif"]:
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images.append("/images/" + purename + "/" + f)
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except Exception:
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pass
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return images
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class MalformedB64(Exception):
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pass
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def set_image(b64,**keys):
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track = "title" in keys
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if track:
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entity = {'artists':keys['artists'],'title':keys['title']}
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id = database.sqldb.get_track_id(entity)
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else:
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entity = keys['artist']
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id = database.sqldb.get_artist_id(entity)
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log("Trying to set image, b64 string: " + str(b64[:30] + "..."),module="debug")
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regex = r"data:image/(\w+);base64,(.+)"
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match = re.fullmatch(regex,b64)
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if not match: raise MalformedB64()
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type,b64 = match.groups()
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b64 = base64.b64decode(b64)
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filename = "webupload" + str(int(datetime.datetime.now().timestamp())) + "." + type
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for folder in get_all_possible_filenames(**keys):
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if os.path.exists(data_dir['images'](folder)):
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with open(data_dir['images'](folder,filename),"wb") as f:
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f.write(b64)
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break
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else:
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folder = get_all_possible_filenames(**keys)[0]
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os.makedirs(data_dir['images'](folder))
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with open(data_dir['images'](folder,filename),"wb") as f:
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f.write(b64)
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log("Saved image as " + data_dir['images'](folder,filename),module="debug")
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# set as current picture in rotation
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if track: set_image_in_cache(id,'tracks',os.path.join("/images",folder,filename))
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else: set_image_in_cache(id,'artists',os.path.join("/images",folder,filename))
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return os.path.join("/images",folder,filename)
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