Automatically create the profile file

Fixes #1

abzer/__main__.py

@@ -9,7 +9,7 @@
 
 
 from .abzer import Abzer
-from .util import collect_files, make_argparser, read_config
+from .util import collect_files, create_profile_file, make_argparser, read_config
 from os.path import isfile
 from sys import exit
 
@@ -38,6 +38,9 @@ def main():
 
     safety_check(config)
 
+    create_profile_file(config.get("essentia", "path"),
+                   config.get("essentia", "profile"))
+
     files = []
 
     for name in args.filenames:

abzer/const.py

@@ -15,3 +15,10 @@
             "profile": join(DEFAULT_PATH, "profile.yaml")}
 HEADERS = {"User-Agent": "abzer %s (https://github.com/mineo/abzer)" % version}
 URL_BASE = "http://acousticbrainz.org/%s/low-level"
+
+PROFILE_TEMPLATE = """requireMbid: true
+indent: 0
+mergeValues:
+    metadata:
+        version:
+            essentia_build_sha: {sha}"""

abzer/util.py

@@ -7,10 +7,26 @@
 import logging
 
 from . import const
+from hashlib import sha1
 from os import cpu_count, walk
 from os.path import join
 
 
+def create_profile_file(essentia_path, profile_path):
+    """
+    :param str essentia_path:
+    :param str profile_path:
+    """
+    hash_ = sha1()
+    with open(essentia_path, "rb") as fp:
+        hash_.update(fp.read())
+    digest = hash_.hexdigest()
+    profile = const.PROFILE_TEMPLATE.format(sha=digest)
+    logging.debug("Writing a profile with SHA1 %s to %s", digest, profile_path)
+    with open(profile_path, "w") as fp:
+        fp.write(profile)
+
+
 def collect_files(dir):
     for dirpath, dirnames, filenames in walk(dir):
         for filename in filenames: