From cd90137af4d2d0cb4d8c48ebb72d466e9f467b6d Mon Sep 17 00:00:00 2001
From: Aidan Reilly <74046732+aireilly@users.noreply.github.com>
Date: Tue, 27 Feb 2024 19:13:07 +0000
Subject: [PATCH] adding scripts/get-updated-preview-urls.sh

---
 scripts/get-updated-preview-urls.sh | 62 +++++++++++++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100755 scripts/get-updated-preview-urls.sh

diff --git a/scripts/get-updated-preview-urls.sh b/scripts/get-updated-preview-urls.sh
new file mode 100755
index 0000000000..f6dfb8870e
--- /dev/null
+++ b/scripts/get-updated-preview-urls.sh
@@ -0,0 +1,62 @@
+#!/bin/bash
+# Returns a list of page preview URLs
+# To run locally, clean the _preview folder and do a new asciibinder build before running the script
+# To run in Prow CI, run with 
+# ./get-updated-preview-urls.sh $PULL_NUMBER
+
+# Check if jq is installed
+hash jq 2>/dev/null || { echo >&2 "Error: jq is not installed"; exit 1; }
+
+# Set $pull_number if it is not passed as variable
+if [ $# -eq 0 ]; then
+commit_id=$(git log -n 1 --pretty=format:"%H")
+pull_number="$(curl -s "https://api.github.com/search/issues?q=$commit_id" | jq '.items[0].number')"
+pr_branch="$(git rev-parse --abbrev-ref HEAD)"
+else
+    pull_number=$1
+    pr_branch="latest"
+fi
+
+preview_url_slug="ocpdocs-pr"
+preview_url="https://${pull_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 HTML build 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 $files; do
+    include_ref="include::$file"
+    found_file=$(find . -name '*.adoc' -not -path "modules/*" -not -path "snippets/*" -not -path "_unused_topics/*" -exec grep -rl "^$include_ref" {} +)
+    # Add the found updated assemblies, not directly included in PR
+    assemblies+=("$found_file")
+    # If not found, then it is a directly updated assembly file
+    if [ -z "$found_file" ]; then
+        assemblies+=("$file")
+    fi
+done
+
+# Make the HTML URL slug
+if [ ${#assemblies[@]} -gt 0 ]; then
+    updated_pages=$(echo "${assemblies[@]}" | sed 's/\.adoc$/.html/' | sort | uniq)
+else
+    # No updated pages, just add default URL
+    pages+=("${preview_url}")
+fi
+
+# Search built_pages for every entry in updated_pages and add to pages array when it is found
+for updated_page in $updated_pages; do
+    # sed s/$pr_branch/latest to match the Prow build URL
+    found_page=$(echo "${built_pages}" | grep "${updated_page}" | sed "s|/$pr_branch/|/latest/|")
+    pages+=("${found_page}")
+done
+
+#Echo the results, prepending the $preview_url to every line
+echo "${pages[@]}" | tr ' ' '\n' | sort | uniq | sed "s|^|$preview_url/|"