Added an aoutomation tool to manage the appdata's version notes

automation_tools/appdata_management.sh

@@ -0,0 +1,46 @@
+#!/bin/bash
+
+source automation_tools/version_extractor.sh
+
+# Fetch appdata version
+appdata_version=$(fetch_appdata_version)
+echo -e "Appdata:\t\t$appdata_version"
+# Fetch manifest version
+manifest_version=$(fetch_manifest_version)
+echo -e "Manifest:\t\t$manifest_version"
+
+# Defining manifest file location
+appdata_file="net.retrodeck.retrodeck.appdata.xml"
+
+# Check if release with manifest_version already exists
+if grep -q "version=\"$manifest_version\"" "$appdata_file"; then
+    echo "The release notes for the latest version are already present in the appdata"
+else
+    # Get today's date in the required format (YYYY-MM-DD)
+    today_date=$(date +"%Y-%m-%d")
+    echo "Today is $today_date"
+
+    # Construct the release snippet
+    release_snippet="\
+<releases>
+        <release version=\"$manifest_version\" date=\"$today_date\">
+            <url>https://github.com/XargonWan/RetroDECK/releases/tag/$manifest_version</url>
+            <description>
+                RELEASE_NOTES_PLACEHOLDER
+            </description>
+        </release>"
+
+    # Read the entire content of the XML file
+    xml_content=$(cat "$appdata_file")
+
+    # Replace RELEASE_NOTES_PLACEHOLDER with the actual release notes
+    # TODO
+
+    # Append the new release snippet to the content
+    modified_xml_content="${xml_content/<releases>/$release_snippet}"
+
+    # Overwrite the original XML file with the modified content
+    echo "$modified_xml_content" > "$appdata_file"
+fi
+    # Format the XML file
+    xmlstarlet fo --omit-decl "$appdata_file"