source: other-projects/mirex/grand-challenge/generate-jamendo-dataset/scripts-2015/get-evened-out-json.py@ 30011

#!/usr/bin/python

import json
import os
import os.path
import urllib
import sys


base_url = "http://api.jamendo.com/v3.0/tracks/"
base_url_args = base_url + "?client_id=54cc3f68&format=jsonpretty&audioformat=mp32&audiodlformat=flac"

# OK, there are also the include fields 'licenses' and 'lyrics' but for GCUX, there are currently considered unnecessary

base_url_args = base_url_args + "&include=musicinfo+stats"


argc = len(sys.argv)

input_file  = sys.argv[1] if (argc==2) or (argc==3)  else "jamendo-evened-out-10000-dataset-trackids.json"
output_dir = sys.argv[2] if argc==3 else "download-json-evened-out"


if not os.path.isdir(output_dir):
    print "Creating directory: " + output_dir
    os.mkdir(output_dir)

evened_out_json_data=open(input_file).read()
evened_out_jamendo_ids=json.loads(evened_out_json_data)

for jid in evened_out_jamendo_ids:

    output_filename = os.path.join(output_dir ,jid + ".json")

    if os.path.isfile(output_filename):
        print "  Skipping Track ID " + jid + " as downloaded JSON file already exists"
        continue

    download_url = base_url_args + "&id=" + jid
    print "Downloading: " + download_url
    download_url_handle = urllib.urlopen(download_url)

    json_data = download_url_handle.read()

    with open(output_filename, "w") as json_ofile:
        json_ofile.write(json_data)
        json_ofile.close()