From f29bf1d0124952d6537b18fe53a7af113d1b79d3 Mon Sep 17 00:00:00 2001
From: Serhiy Mytrovtsiy <mitrovtsiy@ukr.net>
Date: Tue, 31 May 2022 18:15:33 +0200
Subject: [PATCH] feat: added auto-update mechanism of kubectl

---
 .github/workflows/upgrader.yaml | 92 +++++++++++++++++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100644 .github/workflows/upgrader.yaml

diff --git a/.github/workflows/upgrader.yaml b/.github/workflows/upgrader.yaml
new file mode 100644
index 0000000..bf675f3
--- /dev/null
+++ b/.github/workflows/upgrader.yaml
@@ -0,0 +1,92 @@
+name: SDK version upgrade
+
+on:
+  push:
+  schedule:
+    - cron: "0 */12 * * *"
+
+jobs:
+  check:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repo
+        run: |
+          git config --global url."https://${{ secrets.GH_TOKEN }}:@github.com/".insteadOf "https://github.com/"
+          git clone https://github.com/actions-hub/kubectl .
+
+      - name: Check if new version exist
+        id: check
+        run: |
+          SDK_VERSION=$(curl --silent "https://api.github.com/repos/kubernetes/kubernetes/releases" | grep '"tag_name":' | sed -E 's/.*"([^"]+)".*/\1/' | sort -V -r | head -n 1)
+          LATEST_VERSION=$(curl --silent "https://api.github.com/repos/actions-hub/kubectl/releases/latest" | tac | grep '"tag_name":' | sed -E 's/.*"([^"]+)".*/\1/')
+          DOCKER_VERSION=$(cat $GITHUB_WORKSPACE/Dockerfile | grep "ARG KUBE_VERSION=" | sed -E 's/ARG KUBE_VERSION=//' | tr -d '"')
+          
+          echo "Provider tag: ${SDK_VERSION}"
+          echo "Current tag: ${LATEST_VERSION}"
+          echo "Docker tag: ${DOCKER_VERSION}"
+          
+          if [ "$SDK_VERSION" != "$LATEST_VERSION" ]; then
+            if [ "$LATEST_VERSION" = "`echo -e "$SDK_VERSION\n$LATEST_VERSION" | sort -V | head -n1`" ]; then
+              if [ "$DOCKER_VERSION" == "$LATEST_VERSION" ]; then
+                echo "New version detected: $SDK_VERSION. Latest in this repo: $LATEST_VERSION. Updating..."
+                echo ::set-output name=newest::"yes"
+                echo "SDK_VERSION=${SDK_VERSION}" >> $GITHUB_ENV
+                echo "LATEST_VERSION=${LATEST_VERSION}" >> $GITHUB_ENV
+              else
+                echo ::error::"Tag version in Dockerfile ($DOCKER_VERSION) is not the same as the latest release ($LATEST_VERSION)."
+                exit 1
+              fi
+            else
+              echo ::set-output name=newest::"no"
+            fi
+          else
+            echo ::set-output name=newest::"no"
+          fi
+
+      - name: Check if version tag is semver and if docker hub has it
+        id: test
+        if: steps.check.outputs.newest == 'yes'
+        run: |
+          if [[ $SDK_VERSION =~ ^v[0-9]+(\.[0-9]+){2,3}$ ]]; then
+            echo "$SDK_VERSION it's semver"
+          else
+            echo ::error::"$SDK_VERSION it's not semver!"
+            exit 1
+          fi
+          echo "Checking if release with $SDK_VERSION tag is available"
+          status_code=$(curl --silent -I https://storage.googleapis.com/kubernetes-release/release/v1.24.0/bin/linux/amd64/kubectl | grep -E "^HTTP" | awk -F " " '{print $2}')
+          echo "Docker hub respond with $status_code"
+          if [ "$status_code" == "200" ] ; then
+            echo ::set-output name=exist::"yes"
+            echo "Newest version available"
+          else
+            echo ::set-output name=exist::"no"
+            echo "Docker hub returns $status_code"
+          fi
+
+      - name: Modify Dockerfile
+        id: modify
+        if: success() && steps.check.outputs.newest == 'yes' && steps.test.outputs.exist == 'yes'
+        run: |
+          git config --global url."https://${{ secrets.GH_TOKEN }}:@github.com/".insteadOf "https://github.com/"
+          git config --global user.name "Serhiy Mytrovtsiy"
+          git config --global user.email "mitrovtsiy@ukr.net"
+          git checkout master
+          FROM_LINE="ARG KUBE_VERSION=\"$LATEST_VERSION\""
+          TO_LINE="ARG KUBE_VERSION=\"$SDK_VERSION\""
+          sed -i "s/${FROM_LINE}/${TO_LINE}/" $GITHUB_WORKSPACE/Dockerfile
+          git add $GITHUB_WORKSPACE/Dockerfile
+          git commit -m "updated kubectl to $SDK_VERSION"
+          git push
+          echo ::set-output name=tag::$SDK_VERSION
+
+      - name: Create new release
+        if: success() && steps.modify.outputs.tag != '0'
+        uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GH_TOKEN }}
+        with:
+          tag_name: ${{ steps.modify.outputs.tag }}
+          release_name: ${{ steps.modify.outputs.tag }}
+          draft: false
+          prerelease: false
\ No newline at end of file