Improve patchport

This changes the syntax of it, so please keep that in mind.

README.md

@@ -57,6 +57,6 @@ To get the diff, run `diff -crB -x "dist" -x "res/raw" -x "build" CleanFolder Pa
 
 You can use `patchport.py` to easily attempt to port patches.
 
-It's not really intelligent and doesn't do much more than just checking if an existing patch can be applied to a given version (it also replaces relevant variables required for porting various patches), but it saves a lot of time if used carefully.
+It's not really intelligent and doesn't do much more than manually preparing necessary patch, checking if an existing patch can be applied to a given version, replacing relevant variables required for porting various patches and eliminating offsets caused by updates, but it saves a lot of time if used carefully.
 
-Example command: `python3 patchport.py 839 8.3.9g /home/ave/Downloads/dic/com.discord-841 /home/ave/Projects/cutthecord/`
+Example command: `python3 patchport.py /home/ave/Downloads/dic/com.discord-841`

patchport-state.json

@@ -0,0 +1 @@
+{"versioncode": "899", "versionname": "8.9.9"}

patchport.py

@@ -2,17 +2,21 @@
 import re
 import sys
 import os
+import json
 import subprocess
 import datetime
 import shutil
 
 # Example invocation:
-# python3 patchport.py 839 8.3.9g /home/ave/apks/com.discord-841/ /home/ave/cutthecordrepo/
+# python3 patchport.py /home/ave/apks/com.discord-900/
 
-from_versioncode = sys.argv[1]
-from_versionname = sys.argv[2]
-apk_folder = sys.argv[3]
-cutthecord_folder = sys.argv[4]
+with open("patchport-state.json", "r") as f:
+    jin = json.load(f)
+    from_versioncode = jin["versioncode"]
+    from_versionname = jin["versionname"]
+
+apk_folder = sys.argv[1]
+cutthecord_folder = os.path.dirname(os.path.realpath(__file__))
 debug = False
 tmp_folder = "/tmp/patchport"
 
@@ -167,20 +171,24 @@ for patch in os.listdir(os.path.join(cutthecord_folder, "patches")):
     if not out_path.endswith("-failed"):
         print(f"PORTED: {patch} was successfully ported.")
 
+ctcreadme_path = os.path.join(cutthecord_folder, "README.md")
+# TODO: can we pull the correct date from distok?
+out_datestamp = datetime.datetime.utcnow().strftime("%Y-%m-%d")
+# Update readme with latest version, hacky
+# https://stackoverflow.com/a/35130508/3286892
+with open(ctcreadme_path, 'r') as f:
+    ctcr_text = f.read().replace(f'{from_versionname} ({from_versioncode})',
+                                 f'{to_versionname} ({to_versioncode})')
+in_datestamp = re_releasedate.findall(ctcr_text)[0]
+ctcr_text = ctcr_text.replace(in_datestamp, out_datestamp)
+with open(ctcreadme_path, "w") as f:
+    f.write(ctcr_text)
+
+with open("patchport-state.json", "w") as f:
+    jout = {"versionname": to_versionname, "versioncode": to_versioncode}
+    json.dump(jout, f)
+
 if failures:
     print(f"Port complete. Following patches failed: {', '.join(failures)}")
 else:
-    ctcreadme_path = os.path.join(cutthecord_folder, "README.md")
-    # TODO: can we pull the correct date from distok?
-    out_datestamp = datetime.datetime.utcnow().strftime("%Y-%m-%d")
-    # Update readme with latest version, hacky
-    # https://stackoverflow.com/a/35130508/3286892
-    with open(ctcreadme_path, 'r') as f:
-        ctcr_text = f.read().replace(f'{from_versionname} ({from_versioncode})',
-                                     f'{to_versionname} ({to_versioncode})')
-    in_datestamp = re_releasedate.findall(ctcr_text)[0]
-    ctcr_text = ctcr_text.replace(in_datestamp, out_datestamp)
-    with open(ctcreadme_path, "w") as f:
-        f.write(ctcr_text)
-
     print("Port complete. All patches completed successfully.")