[plesk] Add automation (closes #79)

Only 18.0.20.3 and later are picked up :
- format of the title for 18.0.20 and 18.0.19 are different,
- there is not entry for GA of versions 18.0.18 and older.

Co-authored-by: Marc Wrobel <marc.wrobel@gmail.com>

src/plesk.py

@@ -0,0 +1,53 @@
+import json
+from datetime import datetime
+import urllib.request
+from bs4 import BeautifulSoup
+
+URL = "https://docs.plesk.com/release-notes/obsidian/change-log"
+PRODUCT = "plesk"
+
+
+def make_bs_request(url):
+    req = urllib.request.Request(url)
+    with urllib.request.urlopen(req, timeout=5) as response:
+        return BeautifulSoup(response.read(), features="html5lib")
+
+
+# Only 18.0.20.3 and later will be picked up :
+# - format of the title for 18.0.20 and 18.0.19 are different,
+# - there is not entry for GA of version 18.0.18 and older.
+def fetch_releases():
+    result = {}
+
+    soup = make_bs_request(URL)
+    releases = soup.find_all("div", class_="changelog-entry--obsidian")
+    for release in releases:
+        version = release.h2.text.strip()
+        if not version.startswith('Plesk Obsidian 18'):
+            continue
+
+        version = version.replace(' Update ', '.').replace('Plesk Obsidian ', '')
+        if ' ' in version:
+            continue
+        date = datetime.strptime(release.p.text.strip(), '%d %B %Y').strftime("%Y-%m-%d")
+        result[version] = date
+        print(f"{version}: {date}")
+
+    return result
+
+
+def main():
+    print(f"::group::{PRODUCT}")
+
+    releases = fetch_releases()
+    with open(f"releases/{PRODUCT}.json", "w") as f:
+        f.write(json.dumps(dict(
+            # sort by date then version (desc)
+            sorted(releases.items(), key=lambda x: (x[1], x[0]), reverse=True)
+        ), indent=2))
+
+    print("::endgroup::")
+
+
+if __name__ == '__main__':
+    main()