Adding get updated preview URLs script

updates

scripts/get-updated-preview-urls.sh

@@ -0,0 +1,42 @@
+#!/bin/bash
+# Returns a list of page preview URLs
+
+# Check if jq is installed
+hash jq 2>/dev/null || { echo >&2 "Error: jq is not installed"; exit 1; }
+
+pr_branch="$(git rev-parse --abbrev-ref HEAD)"
+commit_id=$(git log -n 1 --pretty=format:"%H")
+pr_number="$(curl -s "https://api.github.com/search/issues?q=$commit_id" | jq '.items[0].number')"
+preview_url_slug="ocpdocs-pr"
+preview_url="https://${pr_number}--${preview_url_slug}.netlify.app"
+assemblies=()
+pages=()
+files=$(git diff --name-only HEAD~1 HEAD --diff-filter=AMRD "*.adoc" ':(exclude)_unused_topics/*')
+
+# Get the full list of built files
+if [ -e "_preview" ]; then
+    built_pages=$(find _preview -type f -name "*.html" -printf "%P\n")
+else
+    echo "_preview output folder not found"
+    exit 1
+fi
+
+# Search for $file references in all *.adoc files that are not in a folder called modules/, snippets/, or _unused_topics/
+for file in $files; do
+    found_file=$(find . -name '*.adoc' -not -path "./modules/*" -not -path "./snippets/*" -not -path "./_unused_topics/*" -exec grep -rl "$file" {} +)
+    assemblies+=("$found_file")
+done
+
+# Make the html URL slug
+if [ ${#assemblies[@]} -gt 0 ]; then
+    updated_pages=$(echo "${assemblies[@]}" | xargs -n1 basename | sed 's/\.adoc$/.html/' | sort | uniq)
+fi
+
+# Search built_pages for every entry in updated_pages and add to pages array when it is found
+for updated_page in $updated_pages; do
+    # Note also need to sed $pr_branch > "latest"
+    found_page=$(echo "${built_pages}" | grep "${updated_page}" | sed "s/$pr_branch/latest/")
+    pages+=("${preview_url}/${found_page}")
+done
+
+printf '%s\n' "${pages[@]}"