From 5bb1589581d5f93981e08853494eaf6f2bca5e19 Mon Sep 17 00:00:00 2001
From: Steve Boyd <emteknetnz@gmail.com>
Date: Wed, 8 Jun 2022 12:35:57 +1200
Subject: [PATCH] NEW Create action

---
 .github/workflows/auto-tag.yml | 12 +++++++
 .gitignore                     |  2 ++
 README.md                      | 26 ++++++++++++++--
 action.yml                     | 57 ++++++++++++++++++++++++++++++++++
 4 files changed, 95 insertions(+), 2 deletions(-)
 create mode 100644 .github/workflows/auto-tag.yml
 create mode 100644 .gitignore
 create mode 100644 action.yml

diff --git a/.github/workflows/auto-tag.yml b/.github/workflows/auto-tag.yml
new file mode 100644
index 0000000..33446ca
--- /dev/null
+++ b/.github/workflows/auto-tag.yml
@@ -0,0 +1,12 @@
+name: Auto-tag
+on:
+  push:
+    tags:
+      - '*.*.*'
+jobs:
+  auto-tag:
+    name: Auto-tag
+    runs-on: ubuntu-latest
+    steps:
+      - name: Auto-tag
+        uses: silverstripe/gha-auto-tag@main
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..0e38def
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+__response.json
+__response.yml
diff --git a/README.md b/README.md
index 72e708c..1f38249 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,24 @@
-# gha-keepalive
-GitHub Action - Periodically re-enable repository cron workflows
+# GitHub Actions - Keepalive
+
+GitHub Action - Periodically re-enable all repository cron workflows that would otherwise auto-disable after 60 days of no repository activity - see [GitHub docs](https://docs.github.com/en/actions/learn-github-actions/usage-limits-billing-and-administration#disabling-and-enabling-workflows).
+
+## Usage
+
+There are no inputs for configuring this action - just define your schedule so that it runs every 60 days or less (in the below example it is run on the first of each month).
+
+**.github/workflows/keepalive.yml**
+```yml
+name: Keepalive
+on:
+  # Run on a schedule of once per month
+  schedule:
+    - cron: '0 0 1 * *'
+  workflow_dispatch:
+jobs:
+  keepalive:
+    name: Keepalive
+    runs-on: ubuntu-latest
+    steps:
+      - name: Keepalive
+        uses: silverstripe/gha-keepalive@main
+```
diff --git a/action.yml b/action.yml
new file mode 100644
index 0000000..db67fd6
--- /dev/null
+++ b/action.yml
@@ -0,0 +1,57 @@
+name: Keepalive repository cron workflows
+description: GitHub Action to re-enable repository cron workflows to prevent them from stopping after 60 days
+
+runs:
+  using: composite
+  steps:
+
+    - name: Keepalive
+      shell: bash
+      env:
+        GITHUB_REPOSITORY: ${{ github.repository }}
+      run: |
+        # https://docs.github.com/en/rest/actions/workflows#list-repository-workflows
+        RESP_CODE=$(curl -w %{http_code} -s -o __response.json \
+        -X GET https://api.github.com/repos/$GITHUB_REPOSITORY/actions/workflows \
+        -H "Accept: application/vnd.github.v3+json")
+        if [[ $RESP_CODE != "200" ]]; then
+          echo "Unable to read repository workflows - http response code was $RESP_CODE"
+          exit 1
+        fi
+        IDS=$(jq -r .workflows[].id __response.json)
+        if [[ $IDS == "" ]]; then
+          echo "This repository has no workflows"
+          exit 0
+        fi
+        for ID in $IDS; do
+          PTH=$(jq -r ".workflows[] | select(.id==$ID) | .path" __response.json)
+          URL=$(jq -r ".workflows[] | select(.id==$ID) | .html_url" __response.json)
+          URL=${URL//github\.com/raw.githubusercontent.com}
+          URL=${URL//$GITHUB_REPOSITORY\/blob/$GITHUB_REPOSITORY}
+          # Fetch raw workflow yml
+          RESP_CODE=$(curl -w %{http_code} -s -o __response.yml \
+          -X GET $URL \
+          -H "Accept: application/vnd.github.v3+json")
+          if [[ $RESP_CODE != "200" ]]; then
+            echo "Unable to fetch raw content for workflow $PTH with ID $ID from $URL - http response code was $RESP_CODE"
+            echo "Workflow is probably not on default branch"
+            echo "If this workflow runs on a cron, it will not keepalive"
+          else
+            YML=$(cat __response.yml)
+            RX="schedule:\s+- cron:"
+            if ! [[ $YML =~ $RX ]]; then
+              echo "Workflow $PTH with ID $ID does not run on a cron, no need to re-enable"
+            else
+              # https://docs.github.com/en/rest/actions/workflows#enable-a-workflow
+              RESP_CODE=$(curl -w %{http_code} -s -o /dev/null \
+              -X PUT https://api.github.com/repos/$GITHUB_REPOSITORY/actions/workflows/$ID/enable \
+              -H "Accept: application/vnd.github.v3+json" \
+              -H "Authorization: token ${{ github.token }}")
+              if [[ $RESP_CODE != "204" ]]; then
+                echo "Unable to enable workflow $PTH with ID $ID - http response code was $RESP_CODE"
+                exit 1
+              fi
+              echo "Re-enabled workflow $PTH with ID $ID"
+            fi
+          fi
+        done