From 58f0fadc07e6543835d4c5dca8061766a09fb923 Mon Sep 17 00:00:00 2001
From: Jaisen Mathai <jaisen@jmathai.com>
Date: Sun, 3 Jan 2016 22:10:56 -0800
Subject: [PATCH] gh-61 Add support for audio (m4a) files and accompanying
 tests

---
 elodie.py                        |   7 +-
 elodie/geolocation.py            |   3 +-
 elodie/media/audio.py            |  21 ++++
 elodie/media/video.py            |   3 +-
 elodie/tests/files/audio.m4a     | Bin 0 -> 10167 bytes
 elodie/tests/media/audio_test.py | 177 +++++++++++++++++++++++++++++++
 6 files changed, 206 insertions(+), 5 deletions(-)
 create mode 100644 elodie/media/audio.py
 create mode 100644 elodie/tests/files/audio.m4a
 create mode 100644 elodie/tests/media/audio_test.py

diff --git a/elodie.py b/elodie.py
index faa9977..623d6fa 100755
--- a/elodie.py
+++ b/elodie.py
@@ -10,6 +10,7 @@ from docopt import docopt
 from elodie import constants
 from elodie import geolocation
 from elodie.media.media import Media
+from elodie.media.audio import Audio
 from elodie.media.photo import Photo
 from elodie.media.video import Video
 from elodie.filesystem import FileSystem
@@ -34,7 +35,7 @@ FILESYSTEM = FileSystem()
 def import_file(_file, destination, album_from_folder):
     """Set file metadata and move it to destination.
     """
-    media = Media.get_class_by_file(_file, (Photo, Video))
+    media = Media.get_class_by_file(_file, [Audio, Photo, Video])
     if not media:
         if constants.debug:
             print 'Not a supported file (%s)' % _file
@@ -119,7 +120,7 @@ def _update(params):
         destination = os.path.expanduser(os.path.dirname(os.path.dirname(
                                          os.path.dirname(file_path))))
 
-        media = Media.get_class_by_file(file_path, (Photo, Video))
+        media = Media.get_class_by_file(file_path, [Audio, Photo, Video])
         if not media:
             continue
 
@@ -155,7 +156,7 @@ def _update(params):
             updated = True
 
         if updated:
-            updated_media = Media.get_class_by_file(file_path, (Photo, Video))
+            updated_media = Media.get_class_by_file(file_path, [Audio, Photo, Video])
             # See comments above on why we have to do this when titles
             # get updated.
             if remove_old_title_from_name and len(original_title) > 0:
diff --git a/elodie/geolocation.py b/elodie/geolocation.py
index 458b398..7318e99 100644
--- a/elodie/geolocation.py
+++ b/elodie/geolocation.py
@@ -92,7 +92,8 @@ def decimal_to_dms(decimal, signed=True):
     return (
         pyexiv2.Rational(degrees, 1),
         pyexiv2.Rational(minutes, 1),
-        pyexiv2.Rational(subseconds_fraction.numerator, subseconds_fraction.denominator)  # noqa
+        pyexiv2.Rational(subseconds_fraction.numerator,
+            subseconds_fraction.denominator)
     )
 
 
diff --git a/elodie/media/audio.py b/elodie/media/audio.py
new file mode 100644
index 0000000..e373916
--- /dev/null
+++ b/elodie/media/audio.py
@@ -0,0 +1,21 @@
+"""
+Author: Jaisen Mathai <jaisen@jmathai.com>
+Audio package that handles all audio operations
+Inherits from Video package
+"""
+
+from elodie import constants
+from elodie import plist_parser
+from media import Media
+from video import Video
+
+
+class Audio(Video):
+    __name__ = 'Audio'
+    extensions = ('m4a')
+
+    """
+    @param, source, string, The fully qualified path to the audio file
+    """
+    def __init__(self, source=None):
+        super(Audio, self).__init__(source)
diff --git a/elodie/media/video.py b/elodie/media/video.py
index ea2d65e..f3d6ace 100644
--- a/elodie/media/video.py
+++ b/elodie/media/video.py
@@ -27,6 +27,7 @@ class Video(Media):
 
     """
     @param, source, string, The fully qualified path to the video file
+    @param, Audio, class or none, The Audio class if being extendted by the Audio class
     """
     def __init__(self, source=None):
         super(Video, self).__init__(source)
@@ -375,7 +376,7 @@ class Video(Media):
 
             # Before we do anything destructive we confirm that the
             #   file is in tact.
-            check_media = Video(temp_movie)
+            check_media = Media.get_class_by_file(temp_movie, [self.__class__])
             check_metadata = check_media.get_metadata()
             if(
                 (
diff --git a/elodie/tests/files/audio.m4a b/elodie/tests/files/audio.m4a
new file mode 100644
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diff --git a/elodie/tests/media/audio_test.py b/elodie/tests/media/audio_test.py
new file mode 100644
index 0000000..52bee1d
--- /dev/null
+++ b/elodie/tests/media/audio_test.py
@@ -0,0 +1,177 @@
+# -*- coding: utf-8
+# Project imports
+import os
+import sys
+
+import shutil
+import tempfile
+import time
+import datetime
+
+from nose.plugins.skip import SkipTest
+
+sys.path.insert(0, os.path.abspath(os.path.dirname(os.path.dirname(os.path.dirname(os.path.dirname(os.path.realpath(__file__)))))))
+sys.path.insert(0, os.path.abspath(os.path.dirname(os.path.dirname(os.path.realpath(__file__)))))
+
+import helper
+from elodie.media.media import Media
+from elodie.media.video import Video
+from elodie.media.audio import Audio
+
+os.environ['TZ'] = 'GMT'
+
+def test_audio_extensions():
+    audio = Audio()
+    extensions = audio.extensions
+
+    assert 'm4a' in extensions
+
+    valid_extensions = Audio.get_valid_extensions()
+
+    assert extensions == valid_extensions, valid_extensions
+
+def test_get_coordinate():
+    audio = Audio(helper.get_file('audio.m4a'))
+    coordinate = audio.get_coordinate()
+
+    assert coordinate == 29.75893888888889, coordinate
+
+def test_get_coordinate_latitude():
+    audio = Audio(helper.get_file('audio.m4a'))
+    coordinate = audio.get_coordinate('latitude')
+
+    assert coordinate == 29.75893888888889, coordinate
+
+def test_get_coordinate_longitude():
+    audio = Audio(helper.get_file('audio.m4a'))
+    coordinate = audio.get_coordinate('longitude')
+
+    assert coordinate == -95.3677, coordinate
+
+def test_get_date_taken():
+    raise SkipTest('gh-32 this test fails on travisci')
+    audio = Audio(helper.get_file('audio.m4a'))
+    date_taken = audio.get_date_taken()
+
+    print '%r' % date_taken
+    assert date_taken == (2016, 1, 4, 5, 24, 15, 0, 19, 0), date_taken
+
+def test_get_exif():
+    audio = Audio(helper.get_file('audio.m4a'))
+    exif = audio.get_exif()
+
+    assert exif is not None, exif
+
+def test_is_valid():
+    audio = Audio(helper.get_file('audio.m4a'))
+
+    assert audio.is_valid()
+
+def test_is_not_valid():
+    audio = Audio(helper.get_file('text.txt'))
+
+    assert not audio.is_valid()
+
+def test_set_date_taken():
+    if not can_edit_exif():
+        raise SkipTest('avmetareadwrite executable not found')
+
+    temporary_folder, folder = helper.create_working_folder()
+
+    origin = '%s/audio.m4a' % folder
+    shutil.copyfile(helper.get_file('audio.m4a'), origin)
+
+    audio = Audio(origin)
+    status = audio.set_date_taken(datetime.datetime(2013, 9, 30, 7, 6, 5))
+
+    assert status == True, status
+
+    audio_new = Audio(origin)
+    metadata = audio_new.get_metadata()
+
+    date_taken = metadata['date_taken']
+
+    shutil.rmtree(folder)
+
+    assert date_taken == (2013, 9, 30, 7, 6, 5, 0, 273, 0), metadata['date_taken']
+
+def test_set_location():
+    if not can_edit_exif():
+        raise SkipTest('avmetareadwrite executable not found')
+
+    raise SkipTest('gh-31, precision is lost in conversion from decimal to dms')
+    temporary_folder, folder = helper.create_working_folder()
+
+    origin = '%s/audio.m4a' % folder
+    shutil.copyfile(helper.get_file('audio.m4a'), origin)
+
+    audio = Audio(origin)
+    origin_metadata = audio.get_metadata()
+
+    # Verify that original photo has no location information
+    #assert origin_metadata['latitude'] is None, origin_metadata['latitude']
+    #assert origin_metadata['longitude'] is None, origin_metadata['longitude']
+
+    status = audio.set_location(11.1111111111, 99.9999999999)
+
+    assert status == True, status
+
+    audio_new = Audio(origin)
+    metadata = audio_new.get_metadata()
+
+    shutil.rmtree(folder)
+
+    # @TODO: understand why the decimal to degree conversion loses accuracy
+    assert metadata['latitude'] == 11.1111111111, metadata['latitude']
+    assert metadata['longitude'] == 99.9999999999, metadata['longitude']
+
+def test_set_title():
+    if not can_edit_exif():
+        raise SkipTest('avmetareadwrite executable not found')
+
+    temporary_folder, folder = helper.create_working_folder()
+
+    origin = '%s/audio.m4a' % folder
+    shutil.copyfile(helper.get_file('audio.m4a'), origin)
+
+    audio = Audio(origin)
+    origin_metadata = audio.get_metadata()
+
+    status = audio.set_title('my audio title')
+
+    assert status == True, status
+
+    audio_new = Audio(origin)
+    metadata = audio_new.get_metadata()
+
+    shutil.rmtree(folder)
+
+    assert metadata['title'] == 'my audio title', metadata['title']
+
+def test_set_title_non_ascii():
+    if not can_edit_exif():
+        raise SkipTest('avmetareadwrite executable not found')
+
+    raise SkipTest('gh-27, non-ascii characters')
+    temporary_folder, folder = helper.create_working_folder()
+
+    origin = '%s/audio.m4a' % folder
+    shutil.copyfile(helper.get_file('audio.m4a'), origin)
+
+    audio = Audio(origin)
+    origin_metadata = audio.get_metadata()
+
+    status = audio.set_title('形声字 / 形聲字')
+
+    assert status == True, status
+
+    audio_new = Audio(origin)
+    metadata = audio_new.get_metadata()
+
+    shutil.rmtree(folder)
+
+    assert metadata['title'] == '形声字 / 形聲字', metadata['title']
+
+def can_edit_exif():
+    audio = Audio()
+    return audio.get_avmetareadwrite()