Add Update Metainfo workflow

.github/tools/update-metainfo.py

@@ -0,0 +1,58 @@
+#!/usr/bin/env python3
+
+# Command arguments: release version (tag name), date (in format YEAR-MONTH-DAY), URL
+# First argument is required, date and url are optional
+
+import sys
+import logging
+import xml.etree.ElementTree as ET
+
+from datetime import datetime
+
+logging.basicConfig(level=logging.INFO)
+
+METAINFO_PATH = "../../so.libdb.gtkcord4.metainfo.xml"
+REPOSITORY_URL = "https://github.com/diamondburned/gtkcord4"
+
+arg_list = sys.argv[1:]
+rel_version = arg_list[0]
+
+if len(arg_list) == 1:
+    rel_date = datetime.today().strftime("%Y-%m-%d")
+    rel_url = f"{REPOSITORY_URL}/releases/tag/{rel_version}"
+else:
+    rel_date = arg_list[1]
+    rel_url = arg_list[2]
+
+logging.info("Parsed release info:")
+logging.info("Version: %s", rel_version)
+logging.info("Date: %s", rel_date)
+logging.info("Tag URL: %s", rel_url)
+
+# Get element tree and 'component' root element
+tree = ET.parse(METAINFO_PATH)
+root = tree.getroot()
+
+# Get 'releases' element
+releases = root.find("releases")
+
+# Create new 'release' element with 'url' subelement
+new_release = ET.Element(
+    "release",
+    {
+        'version': rel_version,
+        'date': rel_date
+    }
+)
+
+release_url = ET.SubElement(new_release, "url")
+release_url.text = rel_url
+
+# Insert 'release' as a first element of the 'releases' element
+releases.insert(0, new_release)
+
+# Indent 'releases' element for better readability
+ET.indent(releases, level=1)
+
+# Write edited XML to the original metainfo file
+tree.write(METAINFO_PATH, encoding="utf-8", xml_declaration=True)

.github/workflows/update-metainfo.yml

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+name: Update Metainfo
+
+on:
+  release:
+    types: [released]
+
+jobs:
+  update:
+    name: Update Metainfo file
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          ref: ${{ github.ref_name }}
+      - name: Run update-metainfo script
+        run: python ./.github/tools/update-metainfo.py ${{ github.ref_name }}
+      - name: Commit changes
+        uses: stefanzweifel/git-auto-commit-action@v5
+        with:
+          commit_message: "chore: Update metainfo.xml"
+          file_pattern: so.libdb.gtkcord4.metainfo.xml