Add overwrite cache option

README.md

@@ -52,7 +52,7 @@ pip install .
 Start scraping with the following command:
 
 ```shell
-crawler-to-md --url <URL> [--output-folder ./output] [--cache-folder ./cache] [--base-url <BASE_URL>] [--exclude <KEYWORD_IN_URL>] [--title <TITLE>] [--urls-file <URLS_FILE>] [-p <PROXY_URL>]
+crawler-to-md --url <URL> [--output-folder ./output] [--cache-folder ./cache] [--overwrite-cache|-w] [--base-url <BASE_URL>] [--exclude <KEYWORD_IN_URL>] [--title <TITLE>] [--urls-file <URLS_FILE>] [-p <PROXY_URL>]
 ```
 
 Options:
@@ -61,6 +61,7 @@ Options:
 - `--urls-file`: Path to a file containing URLs to scrape, one URL per line. If '-', read from stdin. 📁
 - `--output-folder`, `-o`: Where to save Markdown files (default: `./output`). 📂
 - `--cache-folder`, `-c`: Where to store the database (default: `./cache`). 💾
+- `--overwrite-cache`, `-w`: Overwrite existing cache database before scraping. 🧹
 - `--base-url`, `-b`: Filter links by base URL (default: URL's base). 🔎
 - `--title`, `-t`: Final title of the markdown file. Defaults to the URL. 🏷️
 - `--exclude`, `-e`: Exclude URLs containing this string (repeatable). ❌

crawler_to_md/cli.py

@@ -50,6 +50,13 @@ def main():
         help="Cache folder for storing database",
         default="~/.cache/crawler-to-md",
     )
+    parser.add_argument(
+        "--overwrite-cache",
+        "-w",
+        action="store_true",
+        help="Overwrite existing cache database if present",
+        default=False,
+    )
     parser.add_argument(
         "--base-url",
         "-b",
@@ -169,6 +176,13 @@ def main():
     db_path = os.path.join(
         args.cache_folder, utils.url_to_filename(first_url) + ".sqlite"
     )
+    if args.overwrite_cache and os.path.exists(db_path):
+        logger.info(f"Removing existing cache database at {db_path}")
+        try:
+            os.remove(db_path)
+        except OSError as e:
+            logger.error(f"Failed to remove cache database at {db_path}: {e}")
+            sys.exit(1)
     db_manager = DatabaseManager(db_path)
     logger.info("DatabaseManager initialized.")
 

tests/test_cli.py

@@ -1,8 +1,11 @@
+import os
+import sqlite3
 import sys
 
 import pytest
 
-from crawler_to_md import cli
+from crawler_to_md import cli, utils
+from crawler_to_md.database_manager import DatabaseManager
 from crawler_to_md.export_manager import ExportManager
 from crawler_to_md.scraper import Scraper
 
@@ -177,3 +180,69 @@ def fake_init(*a, **k):
     with pytest.raises(SystemExit):
         cli.main()
 
+
+def test_cli_overwrite_cache(monkeypatch, tmp_path):
+    captured = {}
+
+    def fake_init(self, db_path):
+        captured['exists'] = os.path.exists(db_path)
+        self.conn = sqlite3.connect(':memory:')
+
+    monkeypatch.setattr(DatabaseManager, '__init__', fake_init)
+    monkeypatch.setattr(ExportManager, 'export_to_markdown', lambda *a, **k: None)
+    monkeypatch.setattr(ExportManager, 'export_to_json', lambda *a, **k: None)
+    monkeypatch.setattr(Scraper, 'start_scraping', lambda *a, **k: None)
+
+    cache_folder = tmp_path / 'cache'
+    db_name = utils.url_to_filename('http://example.com') + '.sqlite'
+    db_path = cache_folder / db_name
+    cache_folder.mkdir()
+    db_path.write_text('dummy')
+
+    args = [
+        'prog',
+        '--url',
+        'http://example.com',
+        '--output-folder',
+        str(tmp_path),
+        '--cache-folder',
+        str(cache_folder),
+        '--overwrite-cache',
+    ]
+    monkeypatch.setattr(sys, 'argv', args)
+    cli.main()
+    assert captured.get('exists') is False
+
+
+def test_cli_overwrite_cache_short_option(monkeypatch, tmp_path):
+    captured = {}
+
+    def fake_init(self, db_path):
+        captured['exists'] = os.path.exists(db_path)
+        self.conn = sqlite3.connect(':memory:')
+
+    monkeypatch.setattr(DatabaseManager, '__init__', fake_init)
+    monkeypatch.setattr(ExportManager, 'export_to_markdown', lambda *a, **k: None)
+    monkeypatch.setattr(ExportManager, 'export_to_json', lambda *a, **k: None)
+    monkeypatch.setattr(Scraper, 'start_scraping', lambda *a, **k: None)
+
+    cache_folder = tmp_path / 'cache'
+    db_name = utils.url_to_filename('http://example.com') + '.sqlite'
+    db_path = cache_folder / db_name
+    cache_folder.mkdir()
+    db_path.write_text('dummy')
+
+    args = [
+        'prog',
+        '--url',
+        'http://example.com',
+        '--output-folder',
+        str(tmp_path),
+        '--cache-folder',
+        str(cache_folder),
+        '-w',
+    ]
+    monkeypatch.setattr(sys, 'argv', args)
+    cli.main()
+    assert captured.get('exists') is False
+