Add --no-problem-statement and --only-last-submission flags (#2)

* Add --no-problem-statement and --only-last-submission flags

* Update script help message in README.md

---------

Co-authored-by: Davide Cazzin <28535750+NeverMendel@users.noreply.github.com>

Author: GoingMyWay

README.md

@@ -108,11 +108,12 @@ The script accepts the following arguments:
 ```
 usage: leetcode-export [-h] [--cookies COOKIES] [--folder FOLDER]
                        [--problem-folder-name PROBLEM_FOLDER_NAME]
+                       [--no-problem-statement]
                        [--problem-statement-filename PROBLEM_STATEMENT_FILENAME]
                        [--problem-statement-content PROBLEM_STATEMENT_CONTENT]
                        [--submission-filename SUBMISSION_FILENAME]
-                       [--only-accepted] [--language LANGUAGE_UNPROCESSED] [-v]
-                       [-vv] [-V]
+                       [--only-accepted] [--only-last-submission]
+                       [--language LANGUAGE_UNPROCESSED] [-v] [-vv] [-V]
 
 Export LeetCode submissions
 
@@ -122,13 +123,17 @@ options:
   --folder FOLDER       set output folder
   --problem-folder-name PROBLEM_FOLDER_NAME
                         problem folder name format
+  --no-problem-statement
+                        do not save problem statement
   --problem-statement-filename PROBLEM_STATEMENT_FILENAME
                         problem statement filename format
   --problem-statement-content PROBLEM_STATEMENT_CONTENT
                         problem statement content format
   --submission-filename SUBMISSION_FILENAME
                         submission filename format
   --only-accepted       save accepted submissions only
+  --only-last-submission
+                        only save the last submission for each programming language
   --language LANGUAGE_UNPROCESSED
                         save submissions for specified programming languages.
                         syntax: --language=<lang1>,<lang2>,...
@@ -225,4 +230,4 @@ The license of leetcode-cli is available [here](https://github.com/skygragon/lee
 
 ## License
 
-[MIT License](LICENSE)
+[MIT License](LICENSE)

leetcode_export/__main__.py

@@ -30,6 +30,12 @@ def parse_args():
         default="${question_id}-${title_slug}",
         help="problem folder name format",
     )
+    parser.add_argument(
+        "--no-problem-statement",
+        dest="no_problem_statement",
+        action="store_true",
+        help="do not save problem statement",
+    )
     parser.add_argument(
         "--problem-statement-filename",
         type=str,
@@ -55,6 +61,12 @@ def parse_args():
         action="store_true",
         help="save accepted submissions only",
     )
+    parser.add_argument(
+        "--only-last-submission",
+        dest="only_last_submission",
+        action="store_true",
+        help="only save the last submission for each programming language",
+    )
     parser.add_argument(
         "--language",
         dest="language_unprocessed",
@@ -145,14 +157,41 @@ def main():
     os.chdir(args.folder)
 
     title_slug_to_problem_folder_name: dict[str, str] = dict()
+    title_slug_to_exported_languages: dict[str, set[str]] = dict()
+
+    last_submission_timestamp: Optional[int] = None
 
     for submission in leetcode.get_submissions():
+        if (
+            last_submission_timestamp is not None
+            and submission.timestamp > last_submission_timestamp
+        ):
+            logging.warning(
+                "Submissions are not in reverse chronological order, --only-last-submission flag might not work as expected if used. Please report this issue on GitHub attaching the debug.log file: https://github.com/NeverMendel/leetcode-export/issues"
+            )
+        last_submission_timestamp = submission.timestamp
+
         if args.only_accepted and submission.status_display != "Accepted":
             continue
 
         if args.language and submission.lang not in args.language:
             continue
 
+        if submission.title_slug not in title_slug_to_exported_languages:
+            title_slug_to_exported_languages[submission.title_slug] = set()
+
+        if (
+            args.only_last_submission
+            and submission.title_slug in title_slug_to_exported_languages
+            and submission.lang
+            in title_slug_to_exported_languages[submission.title_slug]
+        ):
+            logging.info(
+                f"The latest submission for {submission.title_slug} in {submission.lang} has already been exported, skipping this submission"
+            )
+            continue
+        title_slug_to_exported_languages[submission.title_slug].add(submission.lang)
+
         if submission.title_slug not in title_slug_to_problem_folder_name:
             problem_statement = leetcode.get_problem_statement(submission.title_slug)
             problem_folder_name = problem_folder_name_template.substitute(
@@ -168,7 +207,9 @@ def main():
             problem_statement_filename = problem_statement_filename_template.substitute(
                 **problem_statement.__dict__
             )
-            if not os.path.exists(problem_statement_filename):
+            if not args.no_problem_statement and not os.path.exists(
+                problem_statement_filename
+            ):
                 with open(problem_statement_filename, "w+") as problem_statement_file:
                     problem_statement_file.write(
                         problem_statement_template.substitute(