From 82a55f1dada836797472da4485997fa9d73374b1 Mon Sep 17 00:00:00 2001
From: Chris Pomeroy <chris.pomeroy@hotmail.com>
Date: Sun, 21 Nov 2021 04:35:34 +0000
Subject: [PATCH] Added a function to normalize metadata

---
 aaxConvert.py |  218 ++++++++++++++++++++++++++++++++++++++++++++++++------
 1 files changed, 193 insertions(+), 25 deletions(-)

diff --git a/aaxConvert.py b/aaxConvert.py
index 8234770..f83199f 100755
--- a/aaxConvert.py
+++ b/aaxConvert.py
@@ -1,25 +1,193 @@
-#!/usr/bin/python
-import argparse
-import os
-
-# arguments
-# activation_key, file name, codec(default to mp3)
-parser = argparse.ArgumentParser()
-parser.add_argument("--code", help="Activation Code from audible to decrypt files")
-parser.add_argument("filename", help="Filename to convert")
-
-args = parser.parse_args()
-
-act_byte = ""
-if args.code:
-    act_byte = args.code
-elif os.path.isfile('./.authcode'):
-    act_byte = open('./.authcode').readline()
-
-if act_byte == "":
-    print "Please provide an activation code from audible. Either at the command line or the .authcode file"
-else:
-    print act_byte
-
-if os.path.isfile(args.filename):
-    print os.path.abspath(args.filename)
+#!/usr/bin/env -S python -u
+import argparse
+import os
+import glob
+import subprocess
+import json
+import re
+import requests
+import unicodedata
+import sys
+from querysubsonic import findalbumbyname
+
+# arguments
+# activation_key, file name, codec(default to mp3)
+
+parser = argparse.ArgumentParser()
+parser.add_argument("-s", "--single", help="Use this option to create a single file. This is false by default", action="store_true")
+parser.add_argument("-d", "--dpath", help="Use this to set the destination path. Otherwise I will use the current directory")
+parser.add_argument("-v", "--verbose", help="Send output to stdout", action="store_true")
+parser.add_argument("filename", help="Filename to convert, or directory to look in")
+
+args = parser.parse_args()
+
+act_byte = ""
+metadata = ""
+mode = ""
+stats = ""
+
+if args.dpath:
+    path = args.dpath
+else:
+    path = os.getcwd()
+
+if args.single:
+    mode = 'single'
+else:
+    mode = 'chapter'
+
+if args.verbose:
+    stats = "-stats"
+else:
+    stats = "-nostats"
+
+
+def getmetadata(aaxfile):
+    # Returns the metadata from an aax file
+    ret = subprocess.run(["ffprobe", "-v", "info", "-hide_banner", "-show_format", "-show_chapters",
+                          "-print_format", "json", os.path.abspath(aaxfile)], capture_output=True)
+
+    mdata = json.loads(ret.stdout)
+    aret = ret.stderr.decode().split('\n')[0]
+    mdata["checksum"] = aret.split()[-1]
+    return mdata
+
+
+def getmetabitrate():
+    # Return the bitrate of the media
+    bit_rate = metadata['format']['bit_rate']
+    return bit_rate[:2]
+
+
+def getmetacopyright():
+    # Return normalized copyright data
+    copyright = unicodedata.normalize('NFKD', metadata['format']['tags']['copyright']).encode('ascii', 'ignore')
+    return copyright.decode()
+
+
+def getmetadatatags(key):
+    # get specific data
+    tag = metadata['format']['tags'][key]
+    return " ".join(tag.split())
+
+
+def normalize_data(data):
+    # Return a normalized title
+    data = data.replace(" ", "_")
+    pattern = re.compile('\W')
+    return re.sub(pattern, '', data)
+
+
+def reencode(aaxfile, outpath):
+    # decrypt and reencode to mp3
+    command = ("ffmpeg -loglevel error {} -activation_bytes {} -i {} -vn -codec:a libmp3lame -ab {}k -map_metadata -1 "
+               "-metadata \"title={}\" -metadata 'artist={}' -metadata 'album_artist={}' -metadata \"album={}\" -metadata 'date={}' "
+               "-metadata track=1/1 -metadata 'genre={}' -metadata 'copyright={}' \"{}\" ").format(stats, act_byte, aaxfile, getmetabitrate(),
+                                                                                                   getmetadatatags('title'), getmetadatatags('artist'),
+                                                                                                   getmetadatatags('album_artist'), getmetadatatags('album'),
+                                                                                                   getmetadatatags('date'), getmetadatatags('genre'),
+                                                                                                   getmetacopyright(), outpath)
+    if args.verbose:
+        print(command)
+        process = subprocess.run(command, shell=True, capture_output=True)
+        # while True:
+        #     output = process.stdout.readline()
+        #     if output == '' and process.poll() is not None:
+        #         break
+        #     if output:
+        #         print(output.strip())
+        rc = process.stdout
+        return rc
+    else:
+        process = subprocess.run(command, shell=True)
+    return
+
+
+def getchaptercount():
+    # Get the number of chapters
+    ccount = metadata['chapters']
+    return len(ccount)
+
+
+def getchaptermetadata(cid, key):
+    # get the Chapter metadata
+    for i in metadata['chapters']:
+        if i['id'] == cid:
+            return i[key]
+
+
+def movetochapters(path, outpath, chapter, title, start, end):
+    # Creating individual chapters
+
+    outfile = "{}/Ch-{}_{}.mp3".format(outpath, chapter, title.replace(' ', '_'))
+    command = "ffmpeg -loglevel error {} -i \"{}\" -ss {} -to {} -codec:a copy -metadata 'track={}' \"{}\"".format(stats, path,
+                                                                                                                   start, end,
+                                                                                                                   chapter, outfile)
+    if args.verbose:
+        print(command)
+        process = subprocess.run(command, shell=True, capture_output=True)
+        # while True:
+        #     output = process.stdout.readline()
+        #     if output == '' and process.poll() is not None:
+        #         break
+        #     if output:
+        #         print(output.strip())
+        rc = process.poll()
+        return rc
+    else:
+        process = subprocess.run(command, shell=True)
+    return
+
+
+def getcoverart(path, outpath):
+    # Pull the coverart from the file
+    command = "ffmpeg -loglevel error -activation_bytes {} -i \"{}\" -an -codec:v copy \"{}/cover.jpg\"".format(act_byte,
+                                                                                                                path, outpath)
+    if args.verbose:
+        print(command)
+        subprocess.run(command, shell=True)
+    return
+
+
+def getcorrectkey():
+    # request the key for the checksum
+    try:
+        r = requests.post('http://prod-faas-gw.darkurthe.net:8080/function/checkkey', metadata['checksum'], verify=False, timeout=None)
+        return r.text.strip()
+    except requests.exceptions.HTTPError as err:
+        raise err
+        return None
+
+
+for rfile in glob.glob(args.filename):
+    if rfile.find("aax") != -1 and os.path.isfile(rfile):
+        metadata = getmetadata(rfile)
+        album = getmetadatatags('album')
+        # See if we got it already
+        if not findalbumbyname(album):
+            artist = normalize_data(getmetadatatags('artist'))
+            title = normalize_data(getmetadatatags('title'))
+            act_byte = getcorrectkey()
+            if act_byte is None:
+                sys.exit("Can't continue with this file {rfile}")
+            else:
+                ddir = "%s/%s/%s" % (path, artist, title)
+                single_file_path = "/processing/%s.mp3" % (title)
+                if not os.path.exists(ddir):
+                    os.makedirs(ddir)
+                print(ddir)
+                reencode(rfile, single_file_path)
+                if mode == 'chapter':
+                    chapter = 0
+                    numchapters = getchaptercount()
+                    while (numchapters > 0):
+                        cstart = getchaptermetadata(chapter, 'start_time')
+                        cend = getchaptermetadata(chapter, 'end_time')
+                        chapter += 1
+                        numchapters -= 1
+                        schap = str(chapter).zfill(2)
+                        movetochapters(single_file_path, ddir, schap, title, cstart, cend)
+                    os.remove(single_file_path)
+                getcoverart(rfile, ddir)
+        else:
+            print('We have that book already')

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