From fecd816178354a1b2e9f3cb30043cd4f1c3249f6 Mon Sep 17 00:00:00 2001
From: Marco Stoffel <marco.stoffel@softwareag.com>
Date: Fri, 16 Feb 2024 18:28:47 +0100
Subject: [PATCH] feat(dev): Added publish-external-prerelease just task (#74)

* Added publish-external-prerelease just task. Will convert an existing release draft to a prerelease.

* Update scripts/c8y-publish-release.sh

Co-authored-by: Reuben Miller <reuben.d.miller@gmail.com>

* Update justfile

Co-authored-by: Reuben Miller <reuben.d.miller@gmail.com>

* Introduce --pre-release flag and default argument parsing.

* use wait helper to wait for github release to be released

---------

Co-authored-by: Reuben Miller <reuben.d.miller@gmail.com>
---
 justfile                       |  4 ++
 scripts/c8y-publish-release.sh | 91 +++++++++++++++++++++++++++++++---
 2 files changed, 88 insertions(+), 7 deletions(-)

diff --git a/justfile b/justfile
index e5a1339..b833298 100644
--- a/justfile
+++ b/justfile
@@ -68,6 +68,10 @@ publish:
 publish-external tag *args="":
     cd {{justfile_directory()}} && ./scripts/c8y-publish-release.sh {{tag}} {{args}}
 
+# Publish a given github release to Cumulocity (using external urls) but convert an existing draft to a prerelease beforehand
+publish-external-prerelease tag:
+    cd {{justfile_directory()}} && ./scripts/c8y-publish-release.sh {{tag}} --pre-release
+
 # Trigger a release (by creating a tag)
 release:
     git tag -a "{{VERSION}}" -m "{{VERSION}}"
diff --git a/scripts/c8y-publish-release.sh b/scripts/c8y-publish-release.sh
index f14a3e4..4c2b4ac 100755
--- a/scripts/c8y-publish-release.sh
+++ b/scripts/c8y-publish-release.sh
@@ -7,16 +7,59 @@
 # * gh
 # * go-c8y-cli
 #
+
+set -e
+
+help() {
+    cat << EOT
+Publish github releases
+
+USAGE
+    $0 <TAG> [OPTIONS]
+
+FLAGS
+    --pre-release       Publish release as a pre-release (only if it set to draft)
+
+EXAMPLES
+    $0 1.0.0 --pre-release
+
+EOT
+}
+
+# Defaults
+PRE_RELEASE=0
+
+# Parse arguments
+REST_ARGS=()
+while [ $# -gt 0 ]; do
+    case "$1" in
+        -h|--help)
+            help
+            exit 0
+            ;;
+
+        --pre-release)
+            PRE_RELEASE=1
+            ;;
+
+        *)
+            REST_ARGS+=("$1")
+            ;;
+    esac
+    shift
+done
+
+# Only set if rest arguments are defined
+if [ ${#REST_ARGS[@]} -gt 0 ]; then
+    set -- "${REST_ARGS[@]}"
+fi
+
+TAG=
 if [ $# -eq 0 ]; then
-    echo "missing required positional argument: TAG" >&2
-    echo
-    echo "Usage:"
-    echo
-    echo "    $0 <TAG>"
-    echo
+    echo "Missing required argument" >&2
+    help
     exit 1
 fi
-
 TAG="$1"
 
 publish_version() {
@@ -48,6 +91,40 @@ publish_version() {
     fi
 }
 
+wait_for_released() {
+    #
+    # Wait for a Github release to transition away from the draft state (e.g. either prerelease or release)
+    #
+    tag="$1"
+    retries=5
+    attempt=0
+
+    # Note: using exit/return code convention, 1=not ok, 0=ok
+    success=1
+    while [ "$attempt" -lt "$retries" ]; do
+        if [ "$(gh release view "$tag" --json isDraft  --template "{{.isDraft}}")" = "false" ]; then
+            success=0
+            break
+        fi
+        attempt=$((attempt + 1))
+        echo "Waiting for release to be released..." >&2
+        sleep 3
+    done
+    return "$success"
+}
+
+# Set from draft to pre-release
+if [ "$PRE_RELEASE" = 1 ]; then
+    IS_DRAFT=$(gh release view "$TAG" --json isDraft  --template "{{.isDraft}}")
+    if [ "$IS_DRAFT" = "true" ]; then
+        echo "Update $TAG to prerelease."
+        gh release edit --draft=false --prerelease "$TAG"
+        if ! wait_for_released "$TAG"; then
+            echo "Could not update $TAG to prerelease. Exiting"
+            exit 5
+        fi
+    fi
+fi
 # Get assets from given tag
 FILES=$(gh release view "$TAG" --json assets --jq '.assets[].url' | grep ".xz")