Add merge functionality

mastodon_blocklist_deploy/cli.py

@@ -7,7 +7,8 @@ import os
 import toml
 
 from mastodon_blocklist_deploy.models import Instance
-from mastodon_blocklist_deploy.helpers import blocklist_to_markdown, blocklist_to_toml, blocklist_to_csv, blocklist_to_json
+from mastodon_blocklist_deploy.helpers import blocklist_to_markdown, blocklist_to_toml, blocklist_to_csv, \
+    blocklist_to_json
 
 
 def load_blocklist_file(filename: str) -> [Instance]:
@@ -63,13 +64,37 @@ def exporter(blocklist, output=None, format: str = "toml", private: bool = False
         print(exported_text)
 
 
+def merge(input_file, merge_target, format: str = "toml", private: bool = False, overwrite=False):
+    input_blocklist = load_blocklist_file(input_file)
+    merge_target_blocklist = load_blocklist_file(merge_target)
+    for input_instance in input_blocklist:
+        # If the block is already there with the same parameters we do nothing
+        if input_instance in merge_target_blocklist:
+            continue
+        # Check if there is a domain in the merge target where the input domain is similar
+        try:
+            merge_target_instance = [merge_target_instance for merge_target_instance in merge_target if input_instance.domain == merge_target_instance.domain][0]
+            if not overwrite:
+                key_input = ""
+                while key_input not in ("i", "O"):
+                    print(f"Different settings for {input_instance.domain} detected.")
+                    print(f"In the input blocklist the setting is\n{input_instance} whereas it's {merge_target_instance} in the merge target")
+                    key_input = input("Keep input (i) or original (o) [i/O]")
+            elif key_input == "i":
+                merge_target_blocklist.append(merge_target_instance)
+            else:
+                merge_target_blocklist.append(input_instance)
+        except KeyError:
+            pass
+
 
 def cli():
     parser = argparse.ArgumentParser(description='Deploy blocklist updates to a mastodon server')
-    parser.add_argument('action', choices=['diff', 'deploy', 'export'],
+    parser.add_argument('action', choices=['diff', 'deploy', 'export', 'merge'],
                         help="Either use 'diff' to check the difference between local blockĺist and the blocklist on "
                              "the server, 'deploy' to apply the current local blocklist or 'export' to export the remote "
-                             "blocklist into a local file.")
+                             "blocklist into a local file. merge can be used to merge a blocklist (given by -i) into "
+                             "another (-o)")
     parser.add_argument('-s', '--server', help="The address of the server where you want to deploy (e.g. "
                                                "mastodon.social)")
     parser.add_argument('-t', '--token', help="Authorization token")
@@ -92,8 +117,6 @@ def cli():
     else:
         token = os.getenv('MBD_TOKEN')
 
-
-
     """if there is a remote blocklist provided load this instead of fetching it from a server (for debugging reasons)"""
     if args.remote_blocklist:
         with open(args.remote_blocklist) as f:
@@ -102,7 +125,7 @@ def cli():
         remote_blocklist = load_blocklist_from_instance(server=args.server, token=token)
 
     """Load local blocklist only when needed"""
-    if args.action in ["diff", "deploy"]:
+    if args.action in ["diff", "deploy", "merge"]:
         if args.input_file:
             blocklist_filename = args.input_file
         else:
@@ -120,6 +143,9 @@ def cli():
         Instance.apply_blocks_from_diff(diffs, args.server, token, args.no_delete)
     elif args.action == "export":
         exporter(remote_blocklist, args.output, args.format, args.private)
+    elif args.action == "merge":
+        merge(args.input_file, args.output, args.format, args.private)
+
 
 if __name__ == "__main__":
     cli()