mirror of
https://github.com/krateng/maloja.git
synced 2023-08-10 21:12:55 +03:00
378 lines
9.1 KiB
Python
378 lines
9.1 KiB
Python
import re
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import os
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import hashlib
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from threading import Thread
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import pickle
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import urllib
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### TSV files
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def parseTSV(filename,*args):
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f = open(filename)
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result = []
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for l in [l for l in f if (not l.startswith("#")) and (not l.strip()=="")]:
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l = l.replace("\n","").split("#")[0]
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data = list(filter(None,l.split("\t"))) # Multiple tabs are okay, we don't accept empty fields unless trailing
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entry = [] * len(args)
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for i in range(len(args)):
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if args[i]=="list":
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try:
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entry.append(data[i].split("␟"))
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except:
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entry.append([])
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elif args[i]=="string":
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try:
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entry.append(data[i])
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except:
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entry.append("")
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elif args[i]=="int":
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try:
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entry.append(int(data[i]))
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except:
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entry.append(0)
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elif args[i]=="bool":
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try:
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entry.append((data[i].lower() in ["true","yes","1","y"]))
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except:
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entry.append(False)
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result.append(entry)
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f.close()
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return result
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def checksumTSV(folder):
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sums = ""
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for f in os.listdir(folder + "/"):
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if (f.endswith(".tsv")):
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f = open(folder + "/" + f,"rb")
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sums += hashlib.md5(f.read()).hexdigest() + "\n"
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f.close()
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return sums
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# returns whether checksums match and sets the checksum to invalid if they don't (or sets the new one if no previous one exists)
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def combineChecksums(filename,checksums):
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import os
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if os.path.exists(filename + ".rulestate"):
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f = open(filename + ".rulestate","r")
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oldchecksums = f.read()
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f.close()
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if oldchecksums == checksums:
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# the new checksum given by the calling db server represents the rule state that all current unsaved scrobbles were created under
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# if this is the same as the existing one, we're all good
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return True
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elif (oldchecksums != "INVALID"):
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#if not, the file is not consistent to any single rule state (some scrobbles were created with an old ruleset, some not)
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f = open(filename + ".rulestate","w")
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f.write("INVALID") # this will never match any sha256sum
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f.close()
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return False
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else:
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#if the file already says invalid, no need to open it and rewrite
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return False
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else:
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f = open(filename + ".rulestate","w")
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f.write(checksums)
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f.close()
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return True
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# checks ALL files for their rule state. if they are all the same as the current loaded one, the entire database can be assumed to be consistent with the current ruleset
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# in any other case, get out
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def consistentRulestate(folder,checksums):
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result = []
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for scrobblefile in os.listdir(folder + "/"):
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if (scrobblefile.endswith(".tsv")):
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try:
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f = open(folder + "/" + scrobblefile + ".rulestate","r")
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if f.read() != checksums:
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return False
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except:
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return False
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finally:
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f.close()
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return True
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def parseAllTSV(path,*args):
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result = []
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for f in os.listdir(path + "/"):
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if (f.endswith(".tsv")):
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result += parseTSV(path + "/" + f,*args)
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return result
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def createTSV(filename):
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if not os.path.exists(filename):
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open(filename,"w").close()
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def addEntry(filename,a):
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createTSV(filename)
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line = "\t".join(a)
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with open(filename,"a") as f:
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f.write(line + "\n")
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def addEntries(filename,al):
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with open(filename,"a") as f:
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for a in al:
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line = "\t".join(a)
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f.write(line + "\n")
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### Useful functions
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def int_or_none(input_):
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try:
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return int(input_)
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except:
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return None
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def cleandict(d):
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newdict = {k:d[k] for k in d if d[k] is not None}
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d.clear()
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d.update(newdict)
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### Logging
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def log(msg):
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import inspect
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module = inspect.getmodule(inspect.stack()[1][0]).__name__
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if module == "__main__": module = "mainserver"
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print("[" + module + "] " + msg)
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with open("logs/" + module + ".log","a") as logfile:
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logfile.write(msg + "\n")
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### Media info
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def apirequest(artists=None,artist=None,title=None):
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import urllib.parse, urllib.request
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import json
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try:
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with open("apikey","r") as keyfile:
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apikey = keyfile.read().replace("\n","")
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if apikey == "NONE": return {"image":None}
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except:
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return {"image":None}
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sites = [
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{
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"name":"lastfm",
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"artisturl":"https://ws.audioscrobbler.com/2.0/?method=artist.getinfo&artist={artist}&api_key=" + apikey + "&format=json",
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"trackurl":"https://ws.audioscrobbler.com/2.0/?method=track.getinfo&track={title}&artist={artist}&api_key=" + apikey + "&format=json",
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"result_artist_imgurl":lambda data:data["artist"]["image"][3]["#text"],
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"result_track_imgurl":lambda data:data["track"]["album"]["image"][3]["#text"]
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#"result_artist_desc":lambda data:data["artist"]["bio"]["summary"],
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#"result_track_desc":lambda data:None
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}
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]
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# TRACKS
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if title is not None:
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for s in sites:
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try:
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artiststr = urllib.parse.quote(", ".join(artists))
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titlestr = urllib.parse.quote(title)
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response = urllib.request.urlopen(s["trackurl"].format(artist=artiststr,title=titlestr))
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data = json.loads(response.read())
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if s["result_track_imgurl"](data) != "":
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return {"image":s["result_track_imgurl"](data)}
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except:
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pass
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if len(artists) == 1:
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#return {"image":apirequest(artist=artists[0])["image"]}
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return {"image":None}
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# try the same track with every single artist
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for a in artists:
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rec = apirequest(artists=[a],title=title)
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if rec["image"] is not None:
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return rec
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return {"image":None}
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# ARTISTS
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else:
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for s in sites:
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try:
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response = urllib.request.urlopen(s["artisturl"].format(artist=urllib.parse.quote(artist)))
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data = json.loads(response.read())
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if s["result_artist_imgurl"](data) != "":
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return {"image":s["result_artist_imgurl"](data)}
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except:
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pass
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return {"image":None}
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# I think I've only just understood modules
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cachedTracks = {}
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cachedArtists = {}
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def saveCache():
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fl = open("images/cache","wb")
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stream = pickle.dumps((cachedTracks,cachedArtists))
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fl.write(stream)
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fl.close()
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def loadCache():
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try:
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fl = open("images/cache","rb")
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except:
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return
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try:
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ob = pickle.loads(fl.read())
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global cachedTracks, cachedArtists
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(cachedTracks, cachedArtists) = ob
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finally:
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fl.close()
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def getTrackInfo(artists,title,fast=False):
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obj = (frozenset(artists),title)
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filename = "-".join([re.sub("[^a-zA-Z0-9]","",artist) for artist in artists]) + "_" + re.sub("[^a-zA-Z0-9]","",title)
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if filename == "": filename = str(hash(obj))
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filepath = "images/tracks/" + filename
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# check if custom image exists
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if os.path.exists(filepath + ".png"):
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imgurl = "/" + filepath + ".png"
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return {"image":imgurl}
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elif os.path.exists(filepath + ".jpg"):
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imgurl = "/" + filepath + ".jpg"
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return {"image":imgurl}
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elif os.path.exists(filepath + ".jpeg"):
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imgurl = "/" + filepath + ".jpeg"
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return {"image":imgurl}
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try:
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return {"image":cachedTracks[(frozenset(artists),title)]}
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except:
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pass
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# fast request only retuns cached and local results, generates redirect link for rest
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if fast:
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return "/image?title=" + urllib.parse.quote(title) + "&" + "&".join(["artist=" + urllib.parse.quote(a) for a in artists])
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result = apirequest(artists=artists,title=title)
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if result.get("image") is not None:
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cachedTracks[(frozenset(artists),title)] = result["image"]
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return result
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else:
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result = getArtistInfo(artist=artists[0])
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#cachedTracks[(frozenset(artists),title)] = result["image"]
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return result
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def getArtistInfo(artist,fast=False):
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obj = artist
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filename = re.sub("[^a-zA-Z0-9]","",artist)
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if filename == "": filename = str(hash(obj))
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filepath = "images/artists/" + filename
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#filepath_cache = "info/artists_cache/" + filename
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# check if custom image exists
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if os.path.exists(filepath + ".png"):
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imgurl = "/" + filepath + ".png"
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return {"image":imgurl}
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elif os.path.exists(filepath + ".jpg"):
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imgurl = "/" + filepath + ".jpg"
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return {"image":imgurl}
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elif os.path.exists(filepath + ".jpeg"):
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imgurl = "/" + filepath + ".jpeg"
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return {"image":imgurl}
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try:
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return {"image":cachedArtists[artist]}
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except:
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pass
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# fast request only retuns cached and local results, generates redirect link for rest
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if fast:
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return "/image?artist=" + urllib.parse.quote(artist)
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result = apirequest(artist=artist)
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if result.get("image") is not None:
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cachedArtists[artist] = result["image"]
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return result
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else:
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return {"image":""}
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def getTracksInfo(trackobjectlist,fast=False):
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threads = []
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for track in trackobjectlist:
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t = Thread(target=getTrackInfo,args=(track["artists"],track["title"],),kwargs={"fast":fast})
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t.start()
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threads.append(t)
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for t in threads:
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t.join()
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return [getTrackInfo(t["artists"],t["title"]) for t in trackobjectlist]
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def getArtistsInfo(artistlist,fast=False):
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threads = []
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for artist in artistlist:
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t = Thread(target=getArtistInfo,args=(artist,),kwargs={"fast":fast})
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t.start()
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threads.append(t)
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for t in threads:
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t.join()
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# async calls only cached results, now we need to get them
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return [getArtistInfo(a) for a in artistlist]
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# new way of serving images
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# instead always generate a link locally, but redirect that on the fly
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# this way the page can load faster and images will trickle in without having to resort to XHTTP requests
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def resolveImage(artist=None,track=None):
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if track is not None:
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return getTrackInfo(track["artists"],track["title"])["image"]
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elif artist is not None:
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return getArtistInfo(artist)["image"]
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