[redhat-satellite] Refactor script (#244)

Make the script more readable, mostly by:

- using the Product class,
- a little bit of renaming and documentation.

src/redhat-satellite.py

@@ -1,36 +1,31 @@
 import re
 from bs4 import BeautifulSoup
-from common import http
+from common import dates
 from common import endoflife
+from common import http
 
-"""Fetch versions with their dates from access.redhat.com.
+"""Fetches Satellite versions from access.redhat.com.
 
-A few of the older versions, such as 'Satellite 6.1 GA Release (Build 6.1.1)',
-were ignored because too hard to parse.
-"""
+A few of the older versions, such as 'Satellite 6.1 GA Release (Build 6.1.1)', were ignored because too hard to parse."""
 
-URL = "https://access.redhat.com/articles/1365633"
 # https://regex101.com/r/m8aWXG/1
-regex = r"^Satellite (?P<version>\d+\.\d+\.\d+([.-]\d+)?) ([Uu]pdate|[Rr]elease)$"
+VERSION_PATTERN = re.compile(r"^Satellite (?P<version>\d+\.\d+\.\d+([.-]\d+)?) ([Uu]pdate|[Rr]elease)$")
 
-print("::group::redhat-satellite")
-response = http.fetch_url(URL)
+product = endoflife.Product("redhat-satellite")
+print(f"::group::{product.name}")
+response = http.fetch_url("https://access.redhat.com/articles/1365633")
 soup = BeautifulSoup(response.text, features="html5lib")
 
-versions = {}
 for table in soup.findAll("tbody"):
     for tr in table.findAll("tr"):
         td_list = tr.findAll("td")
 
-        # Versions x.y GA are transformed to x.y.0
-        version = td_list[0].get_text().replace(' GA', '.0').strip()
-        m = re.match(regex, version)
-        if m:
-            # Versions a.b.c-d are transformed to a.b.c.d
-            version = m["version"].replace('-', '.')
-            date = td_list[1].get_text().strip()
-            versions[version] = date
-            print(f"{version}: {date}")
+        version_str = td_list[0].get_text().replace(' GA', '.0').strip()  # x.y GA => x.y.0
+        version_match = VERSION_PATTERN.match(version_str)
+        if version_match:
+            version = version_match["version"].replace('-', '.')  # a.b.c-d => a.b.c.d
+            date = dates.parse_date(td_list[1].get_text().strip())
+            product.declare_version(version, date)
 
-endoflife.write_releases('redhat-satellite', versions)
+product.write()
 print("::endgroup::")