Refactor product filtering and loading for generic scripts

Generic scripts are scripts that handle multiple product based on some identifier (URL, coordinates...).
This creates a common function to list and load product configurations for those scripts.

It makes them simpler to read and maintain, while making the way they work much more consistent.

src/maven.py

@@ -1,13 +1,11 @@
-from glob import glob
-import os
 import sys
 import json
-import frontmatter
 import urllib.request
 import datetime
 import re
+from common import endoflife
 
-# Major.Minor + Optional Patch, no RC, nightly releases.
+METHOD = "maven"
 VERSION_REGEX = r'^\d+\.\d+(\.\d+)?$'
 
 
@@ -59,37 +57,21 @@ def fetch_releases(package_identifier):
     return releases
 
 
-def update_releases(product_filter=None):
-    for product_file in glob("website/products/*.md"):
-        product_name = os.path.splitext(os.path.basename(product_file))[0]
-        if product_filter and product_name != product_filter:
-            continue
-        with open(product_file, "r") as f:
-            releases = {}
-            found_maven = False
-            print("::group::%s" % product_name)
-            data = frontmatter.load(f)
-            if "auto" in data:
-                for config in data["auto"]:
-                    for key, _ in config.items():
-                        if key == "maven":
-                            found_maven = True
-                            releases = releases | fetch_releases(config["maven"])
-            if found_maven:
-                write_file(product_name, releases)
-            print("::endgroup::")
+def update_product(product_name, configs):
+    releases = {}
 
+    for config in configs:
+        releases = releases | fetch_releases(config[METHOD])
 
-def write_file(product_name, releases):
-    with open("releases/%s.json" % product_name, "w") as f:
+    with open(f"releases/{product_name}.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))
 
 
-if __name__ == "__main__":
-    if len(sys.argv) > 1:
-        update_releases(sys.argv[1])
-    else:
-        update_releases()
+p_filter = sys.argv[1] if len(sys.argv) > 1 else None
+for product, configs in endoflife.list_products(METHOD, p_filter).items():
+    print("::group::%s" % product)
+    update_product(product, configs)
+    print("::endgroup::")