From a4a0bf6e68c1d006e2ed71e9441c0dfab2607378 Mon Sep 17 00:00:00 2001
From: Iain Sproat <68657+iainsproat@users.noreply.github.com>
Date: Wed, 8 Feb 2023 18:00:55 +0000
Subject: [PATCH] feat(circleci): initial circleci configuration file

---
 .circleci/config.yml                  | 100 ++++++++++++++++++++++++++
 .circleci/package_and_publish_helm.sh |  57 +++++++++++++++
 2 files changed, 157 insertions(+)
 create mode 100644 .circleci/config.yml
 create mode 100755 .circleci/package_and_publish_helm.sh

diff --git a/.circleci/config.yml b/.circleci/config.yml
new file mode 100644
index 0000000..b31cce1
--- /dev/null
+++ b/.circleci/config.yml
@@ -0,0 +1,100 @@
+version: 2.1
+
+workflows:
+  package-helm-chart:
+    jobs:
+      - get-version:
+          filters:
+            tags: &filter-allow-all
+              only: /.*/
+
+      - pre-commit:
+          filters:
+            tags: *filter-allow-all
+
+      - helm-package-and-publish:
+          filters:
+            tags: *filter-allow-all
+            branches: &filter-only-main
+              only:
+                - main
+
+jobs:
+  get-version:
+    docker: &docker-image
+      - image: cimg/base:2022.04
+    working_directory: &workingdir /tmp/ci
+    steps:
+      - checkout
+      - run: mkdir -p workspace
+      - run:
+          name: set version
+          command: |
+            echo "export VERSION=$(.circleci/get_version.sh)" >> workspace/env-vars
+      - run:
+          name: store version
+          command: |
+            cat workspace/env-vars >> $BASH_ENV
+      - run:
+          name: echo version
+          command: |
+            echo "VERSION=${VERSION}"
+      - persist_to_workspace:
+          root: workspace
+          paths:
+            - env-vars
+
+  pre-commit:
+    parameters:
+      config_file:
+        default: ./.pre-commit-config.yaml
+        description: Optional, path to pre-commit config file.
+        type: string
+      cache_prefix:
+        default: ''
+        description: |
+          Optional cache prefix to be used on CircleCI. Can be used for cache busting or to ensure multiple jobs use different caches.
+        type: string
+    docker:
+      - image: speckle/pre-commit-runner:latest
+    resource_class: &docker-resource-class medium
+    working_directory: *workingdir
+    steps:
+      - checkout
+      - restore_cache:
+          keys:
+            - cache-pre-commit-<<parameters.cache_prefix>>-{{ checksum "<<parameters.config_file>>" }}
+      - run:
+          name: Install pre-commit hooks
+          command: pre-commit install-hooks --config <<parameters.config_file>>
+      - save_cache:
+          key: cache-pre-commit-<<parameters.cache_prefix>>-{{ checksum "<<parameters.config_file>>" }}
+          paths:
+            - ~/.cache/pre-commit
+      - run:
+          name: Run pre-commit
+          command: pre-commit run --all-files --config <<parameters.config_file>>
+      - run:
+          command: git --no-pager diff
+          name: git diff
+          when: on_fail
+
+  helm-package-and-publish:
+    docker:
+      - image: quay.io/helmpack/chart-testing:v3.7.1-amd64
+    resource_class: *docker-resource-class
+    working_directory: *workingdir
+    steps:
+      - checkout
+      - add_ssh_keys:
+          fingerprints:
+            - 'TODO: add fingerprint here'
+      - attach_workspace:
+          at: /tmp/workspace
+      - run:
+          name: populate environment variables
+          command: |
+            cat /tmp/workspace/env-vars >> $BASH_ENV
+      - run:
+          name: Build and Publish
+          command: ./.circleci/package_and_publish_helm.sh
diff --git a/.circleci/package_and_publish_helm.sh b/.circleci/package_and_publish_helm.sh
new file mode 100755
index 0000000..adca40d
--- /dev/null
+++ b/.circleci/package_and_publish_helm.sh
@@ -0,0 +1,57 @@
+#!/usr/bin/env bash
+
+set -eo pipefail
+
+TEMP_PACKAGE_DIR="${TEMP_PACKAGE_DIR:-"/tmp/.cr-release-packages"}"
+HELM_PACKAGE_BRANCH="${HELM_PACKAGE_BRANCH:-"gh-pages"}"
+HELM_STABLE_BRANCH="${HELM_STABLE_BRANCH:-"main"}"
+HELM_CHART_DIR_PATH="${HELM_CHART_DIR_PATH:-"deploy/helm"}"
+
+if [[ -z "${VERSION}" ]]; then
+  echo "VERSION environment variable should be set"
+  exit 1
+fi
+
+if [[ -z "${GIT_EMAIL}" ]]; then
+  echo "GIT_EMAIL environment variable should be set"
+  exit 1
+fi
+if [[ -z "${GIT_USERNAME}" ]]; then
+  echo "GIT_USERNAME environment variable should be set"
+  exit 1
+fi
+
+echo "🧹 cleaning temporary directory"
+rm -rf "${TEMP_PACKAGE_DIR}" || true
+mkdir "${TEMP_PACKAGE_DIR}"
+
+helm version -c
+
+echo "🏗️ building dependencies"
+helm dependency build "${HELM_CHART_DIR_PATH}"
+echo "🎁 packaging ${HELM_CHART_DIR_PATH} with version: ${VERSION}"
+helm package "${HELM_CHART_DIR_PATH}" --dependency-update --version "${VERSION}" --app-version "${VERSION}" --destination "${TEMP_PACKAGE_DIR}"
+
+echo "⏬ checking out git branch '${HELM_PACKAGE_BRANCH}'"
+git config user.email "${GIT_EMAIL}"
+git config user.name "${GIT_USERNAME}"
+git fetch
+git switch "${HELM_PACKAGE_BRANCH}"
+if [[ -n "${CIRCLE_TAG}" || "${CIRCLE_BRANCH}" == "${HELM_STABLE_BRANCH}" ]]; then
+  echo "🛻 copying packages to stable directory"
+  cp -a "${TEMP_PACKAGE_DIR}/." stable/
+  pushd stable
+  helm repo index .
+  popd
+else
+  cp -a "${TEMP_PACKAGE_DIR}/." incubator/
+  echo "🛻 copying packages to incubator directory"
+  pushd incubator
+  helm repo index .
+  popd
+fi
+
+echo "⏫ adding, commiting, and pushing to git repository"
+git add .
+git commit -m "updating helm chart to version ${VERSION}"
+git push --set-upstream origin "${HELM_PACKAGE_BRANCH}"