From 2605d59bdd3c39fc12f0258d4fc4be2b749a9459 Mon Sep 17 00:00:00 2001
From: Pavel Boldyrev <627562+bpg@users.noreply.github.com>
Date: Wed, 8 Sep 2021 22:17:05 -0400
Subject: [PATCH] add `scripts` folder

---
 scripts/changelog-links.sh    | 31 ++++++++++++++++++++
 scripts/changelog.tmpl        | 41 ++++++++++++++++++++++++++
 scripts/generate-changelog.sh | 54 +++++++++++++++++++++++++++++++++++
 3 files changed, 126 insertions(+)
 create mode 100755 scripts/changelog-links.sh
 create mode 100644 scripts/changelog.tmpl
 create mode 100755 scripts/generate-changelog.sh

diff --git a/scripts/changelog-links.sh b/scripts/changelog-links.sh
new file mode 100755
index 00000000..f7e2e692
--- /dev/null
+++ b/scripts/changelog-links.sh
@@ -0,0 +1,31 @@
+#!/bin/bash
+
+# This script rewrites [GH-nnnn]-style references in the CHANGELOG.md file to
+# be Markdown links to the given github issues.
+#
+# This is run during releases so that the issue references in all of the
+# released items are presented as clickable links, but we can just use the
+# easy [GH-nnnn] shorthand for quickly adding items to the "Unrelease" section
+# while merging things between releases.
+
+set -e
+
+if [[ ! -f CHANGELOG.md ]]; then
+  echo "ERROR: CHANGELOG.md not found in pwd."
+  echo "Please run this from the root of the terraform provider repository"
+  exit 1
+fi
+
+if [[ `uname` == "Darwin" ]]; then
+  echo "Using BSD sed"
+  SED="sed -i.bak -E -e"
+else
+  echo "Using GNU sed"
+  SED="sed -i.bak -r -e"
+fi
+
+PROVIDER_URL="https:\/\/github.com\/hashicorp\/terraform-provider-aws\/issues"
+
+$SED "s/GH-([0-9]+)/\[#\1\]\($PROVIDER_URL\/\1\)/g" -e 's/\[\[#(.+)([0-9])\)]$/(\[#\1\2))/g' CHANGELOG.md
+
+rm CHANGELOG.md.bak
diff --git a/scripts/changelog.tmpl b/scripts/changelog.tmpl
new file mode 100644
index 00000000..46b67141
--- /dev/null
+++ b/scripts/changelog.tmpl
@@ -0,0 +1,41 @@
+
+{{- if index .NotesByType "breaking-change" }}
+BREAKING CHANGES:
+
+{{range index .NotesByType "breaking-change" -}}
+{{ template "note" .}}
+{{ end -}}
+{{- end -}}
+
+{{- if .NotesByType.note }}
+NOTES:
+
+{{range .NotesByType.note -}}
+{{ template "note" .}}
+{{ end -}}
+{{- end -}}
+
+{{- $features := combineTypes .NotesByType.feature (index .NotesByType "new-resource" ) (index .NotesByType "new-data-source") (index .NotesByType "new-guide") }}
+{{- if $features }}
+FEATURES:
+
+{{range $features | sort -}}
+{{ template "note" . }}
+{{ end -}}
+{{- end -}}
+
+{{- if .NotesByType.enhancement }}
+ENHANCEMENTS:
+
+{{range .NotesByType.enhancement | sort -}}
+{{ template "note" .}}
+{{ end -}}
+{{- end -}}
+
+{{- if .NotesByType.bug }}
+BUG FIXES:
+
+{{range .NotesByType.bug | sort -}}
+{{ template "note" . }}
+{{ end -}}
+{{- end -}}
diff --git a/scripts/generate-changelog.sh b/scripts/generate-changelog.sh
new file mode 100755
index 00000000..a5a09b9a
--- /dev/null
+++ b/scripts/generate-changelog.sh
@@ -0,0 +1,54 @@
+#!/bin/bash
+
+set -o errexit
+set -o nounset
+
+__dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+__parent="$(dirname "$__dir")"
+
+CHANGELOG_FILE_NAME="CHANGELOG.md"
+CHANGELOG_TMP_FILE_NAME="CHANGELOG.tmp"
+TARGET_SHA=$(git rev-parse HEAD)
+PREVIOUS_RELEASE_TAG=$(git describe --abbrev=0 --match='v*.*.*' --tags)
+PREVIOUS_RELEASE_SHA=$(git rev-list -n 1 $PREVIOUS_RELEASE_TAG)
+
+if [ $TARGET_SHA == $PREVIOUS_RELEASE_SHA ]; then
+  echo "Nothing to do"
+  exit 0
+fi
+
+PREVIOUS_CHANGELOG=$(sed -n -e "/# ${PREVIOUS_RELEASE_TAG#v}/,\$p" $__parent/$CHANGELOG_FILE_NAME)
+
+if [ -z "$PREVIOUS_CHANGELOG" ]
+then
+    echo "Unable to locate previous changelog contents."
+    exit 1
+fi 
+
+CHANGELOG=$($(go env GOPATH)/bin/changelog-build -this-release $TARGET_SHA \
+                      -last-release $PREVIOUS_RELEASE_SHA \
+                      -git-dir $__parent \
+                      -entries-dir .changelog \
+                      -changelog-template $__dir/changelog.tmpl \
+                      -note-template $__dir/release-note.tmpl \
+                      -storage-mode filesystem)
+if [ -z "$CHANGELOG" ]
+then
+    echo "No changelog generated."
+    exit 0
+fi
+
+rm -f $CHANGELOG_TMP_FILE_NAME
+
+sed -n -e "1{/# /p;}" $__parent/$CHANGELOG_FILE_NAME > $CHANGELOG_TMP_FILE_NAME
+echo "$CHANGELOG" >> $CHANGELOG_TMP_FILE_NAME
+echo >> $CHANGELOG_TMP_FILE_NAME
+echo "$PREVIOUS_CHANGELOG" >> $CHANGELOG_TMP_FILE_NAME
+
+cp $CHANGELOG_TMP_FILE_NAME $CHANGELOG_FILE_NAME
+
+rm $CHANGELOG_TMP_FILE_NAME
+
+echo "Successfully generated changelog."
+
+exit 0
\ No newline at end of file