From 08191869f53f76da1e3ae6aebe435a5ff461df96 Mon Sep 17 00:00:00 2001
From: leigh capili <leigh@null.net>
Date: Mon, 9 Nov 2020 10:56:08 -0700
Subject: [PATCH] Add helper scripts for cleaning up GREN release notes

---
 hack/find-extra-prs-not-in-git.sh             | 41 +++++++++++++++++++
 .../find-undocumented-release-prs-from-git.sh | 41 +++++++++++++++++++
 2 files changed, 82 insertions(+)
 create mode 100755 hack/find-extra-prs-not-in-git.sh
 create mode 100755 hack/find-undocumented-release-prs-from-git.sh

diff --git a/hack/find-extra-prs-not-in-git.sh b/hack/find-extra-prs-not-in-git.sh
new file mode 100755
index 000000000..4083e598a
--- /dev/null
+++ b/hack/find-extra-prs-not-in-git.sh
@@ -0,0 +1,41 @@
+#!/bin/bash
+
+PREVIOUS_TAG=${1}
+RELEASE_NOTES=${2}
+
+usage() {
+  echo "This script is useful for finding extra PR's in a GREN generated release_notes/changelog file."
+  echo "It checks the GREN changelog for PR numbers that aren't present the git merge log on your local machine."
+  echo
+  echo "usage:"
+  echo "  $0 <previous_tag> <release_notes_file>"
+  echo
+  echo "example:"
+  echo "  check for extra PR's in the v0.8.0 release notes"
+  echo
+  echo "  $0 v0.7.1 ./docs/releases/v0.8.0.md"
+}
+
+if ! [ "${1}" ] || ! [ "${2}" ]; then
+  usage
+  exit 1
+fi
+
+recent_prs_from_git() {
+  git log "${PREVIOUS_TAG}.." --merges --oneline | grep -o '#[1-9][0-9]*'
+}
+
+release_note_prs() {
+  grep -o -E "pull/[0-9][0-9]*" "${RELEASE_NOTES}" | sed 's,pull/,#,'
+}
+
+format_grep_filter() {
+  printf "|%s" "$@" | sed 's/^|//'
+}
+
+missing_prs() {
+  release_note_prs | grep -v -E "$(format_grep_filter $(recent_prs_from_git))"
+}
+
+hub pr list -s closed \
+  | grep -E "$(format_grep_filter $(missing_prs))"
diff --git a/hack/find-undocumented-release-prs-from-git.sh b/hack/find-undocumented-release-prs-from-git.sh
new file mode 100755
index 000000000..60e2c276d
--- /dev/null
+++ b/hack/find-undocumented-release-prs-from-git.sh
@@ -0,0 +1,41 @@
+#!/bin/bash
+
+PREVIOUS_TAG=${1}
+RELEASE_NOTES=${2}
+
+usage() {
+  echo "This script is useful for finding uncredited/undocumented PR's in a GREN generated release_notes/changelog file."
+  echo "It checks the git merge log on your local machine for PR numbers that aren't present in the GREN changelog."
+  echo
+  echo "usage:"
+  echo "  $0 <previous_tag> <release_notes_file>"
+  echo
+  echo "example:"
+  echo "  check for PR's missing from the v0.8.0 release notes"
+  echo
+  echo "  $0 v0.7.1 ./docs/releases/v0.8.0.md"
+}
+
+if ! [ "${1}" ] || ! [ "${2}" ]; then
+  usage
+  exit 1
+fi
+
+recent_prs_from_git() {
+  git log "${PREVIOUS_TAG}.." --merges --oneline | grep -o '#[1-9][0-9]*'
+}
+
+missing_prs() {
+  for pr in $(recent_prs_from_git); do
+    if ! grep "$pr" "${RELEASE_NOTES}" >/dev/null; then
+      echo "$pr"
+    fi
+  done
+}
+
+format_grep_filter() {
+  printf "|%s" "$@" | sed 's/^|//'
+}
+
+hub pr list -s closed \
+  | grep -E "$(format_grep_filter $(missing_prs))"