Setup fastlane

This is great for automatically uploading (localized) screenshots
and app metadata to Google Play.
You can even upload the signed APK releases as well.

For now, this is only useful for running the screenshot Espresso tests
and grabbing the screenshots from the device.

briar-android/fastlane/rename_screenshots.py

@@ -0,0 +1,43 @@
+#!/usr/bin/env python3
+
+# Author: Torsten Grote
+# License: GPLv3 or later
+
+import os
+import re
+import glob
+
+METADATA_PATH = 'metadata/android'
+GLOB = '/*/images/phoneScreenshots/*.png'
+
+REGEX = re.compile(r'(^\w+)_\d{13}\.png$')
+REGEX_IN_FILE = re.compile(r'(\w+)_\d{13}\.png', re.MULTILINE)
+PATH = os.path.dirname(os.path.realpath(__file__))
+
+
+def main():
+    for path in glob.glob("%s%s" % (os.path.join(PATH, METADATA_PATH), GLOB)):
+        filename = os.path.basename(path)
+        match = REGEX.match(filename)
+        if match:
+            directory = os.path.dirname(path)
+            new_filename = "%s.png" % match.group(1)
+            new_path = os.path.join(directory, new_filename)
+            os.rename(path, new_path)
+            print("Renaming\n  %s\nto\n  %s\n" % (path, new_path))
+        else:
+            print("Warning: Path did not match %s" % path)
+
+    # rename fields also in screenshot overview file
+    overview = os.path.join(PATH, METADATA_PATH, 'screenshots.html')
+    with open(overview, 'r') as f:
+        file_data = f.read()
+
+    file_data = REGEX_IN_FILE.sub(r'\1.png', file_data)
+
+    with open(overview, 'w') as f:
+        f.write(file_data)
+
+
+if __name__ == "__main__":
+    main()